mybatis映射关系查询（一对一，一对多）
2018-02-03 19:24
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初学mybatis的同学们都会觉得mybatis比较麻烦，修改sql语句不能热部署，映射关系配置困难。这些问题都会阻碍同学们学习的步伐，为了让同学们更快的了解mybatis映射关系配置，我特意做了个demo让同学们去参考，话不多说直接上源码：
数据表：
-- ----------------------------
-- Table structure for jdrole
-- ----------------------------
DROP TABLE IF EXISTS `jdrole`;
CREATE TABLE `jdrole` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`detail` varchar(255) DEFAULT NULL,
`name` varchar(255) DEFAULT NULL,
`roleCode` varchar(255) DEFAULT NULL,
`state` varchar(255) DEFAULT NULL,
PRIMARY KEY (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=20 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for jduser
-- ----------------------------
DROP TABLE IF EXISTS `jduser`;
CREATE TABLE `jduser` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`account` varchar(255) DEFAULT NULL,
`birthday` datetime DEFAULT NULL,
`dept` varchar(255) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`gender` tinyint(1) DEFAULT NULL,
`headImg` bigint(20) DEFAULT NULL,
`memo` varchar(255) DEFAULT NULL,
`mobile` varchar(255) DEFAULT NULL,
`name` varchar(255) DEFAULT NULL,
`password` varchar(255) DEFAULT NULL,
`state` varchar(255) DEFAULT NULL,
PRIMARY KEY (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for privilege
-- ----------------------------
DROP TABLE IF EXISTS `privilege`;
CREATE TABLE `privilege` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`code` varchar(255) DEFAULT NULL,
`name` varchar(255) DEFAULT NULL,
PRIMARY KEY (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for roleprivilege
-- ----------------------------
DROP TABLE IF EXISTS `roleprivilege`;
CREATE TABLE `roleprivilege` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`privilege` bigint(20) DEFAULT NULL,
`role` bigint(20) DEFAULT NULL,
PRIMARY KEY (`eid`),
KEY `FK6E0EABB56BFB671` (`role`),
KEY `FK6E0EABB50471437` (`privilege`),
CONSTRAINT `FK6E0EABB50471437` FOREIGN KEY (`privilege`) REFERENCES `privilege` (`eid`),
CONSTRAINT `FK6E0EABB56BFB671` FOREIGN KEY (`role`) REFERENCES `jdrole` (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=35 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for userrole
-- ----------------------------
DROP TABLE IF EXISTS `userrole`;
CREATE TABLE `userrole` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`role` bigint(20) DEFAULT NULL,
`user` bigint(20) DEFAULT NULL,
PRIMARY KEY (`eid`),
KEY `FKF3F7670156BFB671` (`role`),
KEY `FKF3F767014C46FFB0` (`user`),
CONSTRAINT `FKF3F767014C46FFB0` FOREIGN KEY (`user`) REFERENCES `jduser` (`eid`),
CONSTRAINT `FKF3F7670156BFB671` FOREIGN KEY (`role`) REFERENCES `jdrole` (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=27 DEFAULT CHARSET=utf8;
javaBean
public class User implements Serializable{
private static final long serialVersionUID = -3355898752454617959L;
private Long eid;
private String name;
private String password;
private String dept;//部门
private String account;//账户
private Long headImg;//头像保存Files的ID
private Boolean gender;//性别
private String state;//状态
private String mobile;//手机号码
private String email;//邮箱
private Date birthday;//生日
private String memo;//备忘录
private List<UserRole> userRoles = new ArrayList<UserRole>(0);
//用户状态
public static String USER_STATE_VALID = "1";//有效
public static String USER_STATE_INVALID = "0";//无效
}
public class UserRole implements Serializable {
private static final long serialVersionUID = 987951779822832066L;
private Long eid;
private User user;
private Role role;
}
public class Role implements Serializable {
private static final long serialVersionUID = -5948865302742232919L;
private Long eid;
private String name;//角色名
private String roleCode;//角色编码
private String detail;//详细
private String state;//状态
private List<RolePrivilege> rolePrivileges = new ArrayList<RolePrivilege>(0);
private List<UserRole> userRoles = new ArrayList<UserRole>(0);
public static String ROLE_STATE_VALID = "1";//有效
public static String ROLE_STATE_INVALID = "0";//无效
}
public class Privilege implements Serializable {
private static final long serialVersionUID = -7358970078992523810L;
private Long eid;
private String name;//权限名
private String code;
}
public class RolePrivilege implements Serializable {
private static final long serialVersionUID = -5659074190267257788L;
private Long eid;
private Role role;
private Privilege privilege;
}最后放上*mapper.xml文件
UserMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.user.dao.UserMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.user.entity.User">
<id column="user_eid" jdbcType="BIGINT" property="eid" />
<result column="user_account" jdbcType="VARCHAR" property="account" />
<result column="user_birthday" jdbcType="TIMESTAMP" property="birthday" />
<result column="user_dept" jdbcType="VARCHAR" property="dept" />
<result column="user_email" jdbcType="VARCHAR" property="email" />
<result column="user_gender" jdbcType="BIT" property="gender" />
<result column="user_headImg" jdbcType="BIGINT" property="headImg" />
<result column="user_memo" jdbcType="VARCHAR" property="memo" />
<result column="user_mobile" jdbcType="VARCHAR" property="mobile" />
<result column="user_name" jdbcType="VARCHAR" property="name" />
<result column="user_password" jdbcType="VARCHAR" property="password" />
<result column="user_state" jdbcType="VARCHAR" property="state" />
<!-- 在 UserRole 类型的 ArrayList 中的 userRoles 的集合。 -->
<collection column="user_eid" javaType="ArrayList" property="userRoles" ofType="cn.lin.nsfw.user.entity.UserRole"
select="getUserRoles" fetchType="lazy"/>
</resultMap>
<sql id="Base_Column_List">
${alias}.eid as user_eid,
${alias}.account as user_account,
${alias}.birthday as user_birthday,
${alias}.dept as user_dept,
${alias}.email as user_email,
${alias}.gender as user_gender,
${alias}.headImg as user_headImg,
${alias}.memo as user_memo,
${alias}.mobile as user_mobile,
${alias}.name as user_name,
${alias}.password as user_password,
${alias}.state as user_state
</sql>
<select id="getUserRoles" parameterType="java.lang.Long" resultMap="cn.lin.nsfw.user.dao.UserRoleMapper.BaseResultMap">
select
ur.eid as userRole_eid
from UserRole ur
where ur.user=#{eid}
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"><property name="alias" value="u"/></include>
from jduser u
where u.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from jduser
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.user.entity.User">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jduser (account, birthday, dept, email, gender, headImg, memo, mobile, name, password, state)
values (#{account,jdbcType=VARCHAR}, #{birthday,jdbcType=TIMESTAMP},
#{dept,jdbcType=VARCHAR},
#{email,jdbcType=VARCHAR}, #{gender,jdbcType=BIT}, #{headImg,jdbcType=BIGINT},
#{memo,jdbcType=VARCHAR}, #{mobile,jdbcType=VARCHAR},
#{name,jdbcType=VARCHAR},
#{password,jdbcType=VARCHAR}, #{state,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.user.entity.User">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jduser
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="account != null">
account,
</if>
<if test="birthday != null">
birthday,
</if>
<if test="dept != null">
dept,
</if>
<if test="email != null">
email,
</if>
<if test="gender != null">
gender,
</if>
<if test="headImg != null">
headImg,
</if>
<if test="memo != null">
memo,
</if>
<if test="mobile != null">
mobile,
</if>
<if test="name != null">
name,
</if>
<if test="password != null">
password,
</if>
<if test="state != null">
state,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="account != null">
#{account,jdbcType=VARCHAR},
</if>
<if test="birthday != null">
#{birthday,jdbcType=TIMESTAMP},
</if>
<if test="dept != null">
#{dept,jdbcType=VARCHAR},
</if>
<if test="email != null">
#{email,jdbcType=VARCHAR},
</if>
<if test="gender != null">
#{gender,jdbcType=BIT},
</if>
<if test="headImg != null">
#{headImg,jdbcType=BIGINT},
</if>
<if test="memo != null">
#{memo,jdbcType=VARCHAR},
</if>
<if test="mobile != null">
#{mobile,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
<if test="password != null">
#{password,jdbcType=VARCHAR},
</if>
<if test="state != null">
#{state,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryK
1261f
eySelective" parameterType="cn.lin.nsfw.user.entity.User">
update jduser
<set>
<if test="account != null">
account = #{account,jdbcType=VARCHAR},
</if>
<if test="birthday != null">
birthday = #{birthday,jdbcType=TIMESTAMP},
</if>
<if test="dept != null">
dept = #{dept,jdbcType=VARCHAR},
</if>
<if test="email != null">
email = #{email,jdbcType=VARCHAR},
</if>
<if test="gender != null">
gender = #{gender,jdbcType=BIT},
</if>
<if test="headImg != null">
headImg = #{headImg,jdbcType=BIGINT},
</if>
<if test="memo != null">
memo = #{memo,jdbcType=VARCHAR},
</if>
<if test="mobile != null">
mobile = #{mobile,jdbcType=VARCHAR},
</if>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
<if test="password != null">
password = #{password,jdbcType=VARCHAR},
</if>
<if test="state != null">
state = #{state,jdbcType=VARCHAR},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.user.entity.User">
update jduser
set account = #{account,jdbcType=VARCHAR},
birthday = #{birthday,jdbcType=TIMESTAMP},
dept = #{dept,jdbcType=VARCHAR},
email = #{email,jdbcType=VARCHAR},
gender = #{gender,jdbcType=BIT},
headImg = #{headImg,jdbcType=BIGINT},
memo = #{memo,jdbcType=VARCHAR},
mobile = #{mobile,jdbcType=VARCHAR},
name = #{name,jdbcType=VARCHAR},
password = #{password,jdbcType=VARCHAR},
state = #{state,jdbcType=VARCHAR}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into jduser
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].account!=null">
account,
</if>
<if test="list[0].birthday!=null">
birthday,
</if>
<if test="list[0].dept!=null">
dept,
</if>
<if test="list[0].email!=null">
email,
</if>
<if test="list[0].gender!=null">
gender,
</if>
<if test="list[0].headImg!=null">
headImg,
</if>
<if test="list[0].memo!=null">
memo,
</if>
<if test="list[0].mobile!=null">
mobile,
</if>
<if test="list[0].name!=null">
name,
</if>
<if test="list[0].password!=null">
password,
</if>
<if test="list[0].state!=null">
state,
</if>
</trim>
values
<foreach collection="list" index="index" item="item"
separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.account!=null">
#{item.account,jdbcType=VARCHAR},
</if>
<if test="item.birthday!=null">
#{item.birthday,jdbcType=TIMESTAMP},
</if>
<if test="item.dept!=null">
#{item.dept,jdbcType=VARCHAR},
</if>
<if test="item.email!=null">
#{item.email,jdbcType=VARCHAR},
</if>
<if test="item.gender!=null">
#{item.gender,jdbcType=BIT},
</if>
<if test="item.headImg!=null">
#{item.headImg,jdbcType=BIGINT},
</if>
<if test="item.memo!=null">
#{item.memo,jdbcType=VARCHAR},
</if>
<if test="item.mobile!=null">
#{item.mobile,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.password!=null">
#{item.password,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
#{item.state,jdbcType=VARCHAR},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item"
separator=";">
update jduser
<set>
<if test="item.account!=null">
account=#{item.account,jdbcType=VARCHAR},
</if>
<if test="item.birthday!=null">
birthday=#{item.birthday,jdbcType=TIMESTAMP},
</if>
<if test="item.dept!=null">
dept=#{item.dept,jdbcType=VARCHAR},
</if>
<if test="item.email!=null">
email=#{item.email,jdbcType=VARCHAR},
</if>
<if test="item.gender!=null">
gender=#{item.gender,jdbcType=BIT},
</if>
<if test="item.headImg!=null">
headImg=#{item.headImg,jdbcType=BIGINT},
</if>
<if test="item.memo!=null">
memo=#{item.memo,jdbcType=VARCHAR},
</if>
<if test="item.mobile!=null">
mobile=#{item.mobile,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
name=#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.password!=null">
password=#{item.password,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
state=#{item.state,jdbcType=VARCHAR},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>UserRoleMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.user.dao.UserRoleMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.user.entity.UserRole">
<id column="userRole_eid" jdbcType="BIGINT" property="eid" />
<association column="user" property="user" jdbcType="BIGINT" javaType="cn.lin.nsfw.user.entity.User"
resultMap="cn.lin.nsfw.user.dao.UserMapper.BaseResultMap"/>
<association column="role" property="role" jdbcType="BIGINT" javaType="cn.lin.nsfw.role.entity.Role"
resultMap="cn.lin.nsfw.role.dao.RoleMapper.BaseResultMap"/>
</resultMap>
<sql id="Base_Column_List">
eid, role, user
</sql>
<select id="getUser" parameterType="java.lang.Long" resultType="cn.lin.nsfw.user.entity.User">
select
eid as user_eid,
account as user_account,
birthday as user_birthday,
dept as user_dept,
email as user_email,
gender as user_gender,
headImg as user_headImg,
memo as user_memo,
mobile as user_mobile,
name as user_name,
password as user_password,
state as user_state
from jdUser u where u.eid=#{eid}
</select>
<select id="getRole" parameterType="java.lang.Long" resultType="cn.lin.nsfw.role.entity.Role">
select
eid as role_eid,
name as role_name,
roleCode as role_roleCode,
detail as role_detail,
state as role_state
from jdRole r where r.eid=#{eid}
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
ur.eid as userRole_eid,
<include refid="cn.lin.nsfw.user.dao.UserMapper.Base_Column_List"><property name="alias" value="u"/></include>,
<include refid="cn.lin.nsfw.role.dao.RoleMapper.Base_Column_List"><property name="alias" value="r"/></include>
from userrole ur
left join jduser u on u.eid = ur.user
left join jdrole r on r.eid = ur.role
where ur.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from userrole
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.user.entity.UserRole">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into userrole (role, [user])
values (#{role.eid,jdbcType=BIGINT}, #{user.eid,jdbcType=BIGINT})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.user.entity.UserRole">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into userrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="role.eid != null">
role,
</if>
<if test="user.eid != null">
[user],
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="role.eid != null">
#{role.eid,jdbcType=BIGINT},
</if>
<if test="user.eid != null">
#{user.eid,jdbcType=BIGINT},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.user.entity.UserRole">
update userrole
<set>
<if test="role.eid != null">
role = #{role.eid,jdbcType=BIGINT},
</if>
<if test="user.eid != null">
[user] = #{user.eid,jdbcType=BIGINT},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.user.entity.UserRole">
update userrole
set role = #{role.eid,jdbcType=BIGINT},
[user] = #{user.eid,jdbcType=BIGINT}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into userrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].role.eid!=null">
role,
</if>
<if test="list[0].user.eid!=null">
[user],
</if>
</trim>
values
<foreach collection="list" index="index" item="item"
separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.role.eid!=null">
#{item.role.eid,jdbcType=BIGINT},
</if>
<if test="item.user.eid!=null">
#{item.user.eid,jdbcType=BIGINT},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item"
separator=";">
update userrole
<set>
<if test="item.role.eid!=null">
role=#{item.role.eid,jdbcType=BIGINT},
</if>
<if test="item.user.eid!=null">
[user]=#{item.user.eid,jdbcType=BIGINT},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>RoleMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.role.dao.RoleMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.role.entity.Role">
<id column="role_eid" jdbcType="BIGINT" property="eid" />
<result column="role_detail" jdbcType="VARCHAR" property="detail" />
<result column="role_name" jdbcType="VARCHAR" property="name" />
<result column="role_roleCode" jdbcType="VARCHAR" property="roleCode" />
<result column="role_state" jdbcType="VARCHAR" property="state" />
<collection column="role_eid" javaType="ArrayList" property="userRoles" ofType="cn.lin.nsfw.user.entity.UserRole" select="getUserRoles" fetchType="lazy"/>
<collection column="role_eid" javaType="ArrayList" property="rolePrivileges" ofType="cn.lin.nsfw.role.entity.RolePrivilege" select="getRolePrivileges" fetchType="lazy"/>
</resultMap>
<sql id="Base_Column_List">
${alias}.eid as role_eid,
${alias}.detail as role_detail,
${alias}.name as role_name,
${alias}.roleCode as role_roleCode,
${alias}.state as role_state
</sql>
<select id="getUserRoles" parameterType="java.lang.Long" resultMap="cn.lin.nsfw.user.dao.UserRoleMapper.BaseResultMap">
select
ur.eid as userRole_eid
from UserRole ur
where ur.role=#{eid}
</select>
<select id="getRolePrivileges" parameterType="java.lang.Long" resultMap="cn.lin.nsfw.role.dao.RolePrivilegeMapper.BaseResultMap">
select
rp.eid as rolePrivilege_eid,
<include refid="cn.lin.nsfw.role.dao.PrivilegeMapper.Base_Column_List"><property name="alias" value="p"/></include>
from RolePrivilege rp
left join Privilege p on p.eid = rp.privilege
where rp.role=#{eid}
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"><property name="alias" value="r"/></include>
from jdrole r
where r.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from jdrole
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.role.entity.Role">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jdrole (detail, name, roleCode,
state)
values (#{detail,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR},
#{rolecode,jdbcType=VARCHAR},
#{state,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.role.entity.Role">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jdrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="detail != null">
detail,
</if>
<if test="name != null">
name,
</if>
<if test="rolecode != null">
roleCode,
</if>
<if test="state != null">
state,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="detail != null">
#{detail,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
<if test="rolecode != null">
#{rolecode,jdbcType=VARCHAR},
</if>
<if test="state != null">
#{state,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.role.entity.Role">
update jdrole
<set>
<if test="detail != null">
detail = #{detail,jdbcType=VARCHAR},
</if>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
<if test="rolecode != null">
roleCode = #{rolecode,jdbcType=VARCHAR},
</if>
<if test="state != null">
state = #{state,jdbcType=VARCHAR},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.role.entity.Role">
update jdrole
set detail = #{detail,jdbcType=VARCHAR},
name = #{name,jdbcType=VARCHAR},
roleCode = #{rolecode,jdbcType=VARCHAR},
state = #{state,jdbcType=VARCHAR}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into jdrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].detail!=null">
detail,
</if>
<if test="list[0].name!=null">
name,
</if>
<if test="list[0].rolecode!=null">
roleCode,
</if>
<if test="list[0].state!=null">
state,
</if>
</trim>
values
<foreach collection="list" index="index" item="item"
separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.detail!=null">
#{item.detail,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.rolecode!=null">
#{item.rolecode,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
#{item.state,jdbcType=VARCHAR},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item"
separator=";">
update jdrole
<set>
<if test="item.detail!=null">
detail=#{item.detail,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
name=#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.rolecode!=null">
roleCode=#{item.rolecode,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
state=#{item.state,jdbcType=VARCHAR},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>RolePrivilegeMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.role.dao.RolePrivilegeMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.role.entity.RolePrivilege">
<id column="rolePrivilege_eid" jdbcType="BIGINT" property="eid" />
<association column="role" property="role" jdbcType="BIGINT" javaType="cn.lin.nsfw.role.entity.Role"
resultMap="cn.lin.nsfw.role.dao.RoleMapper.BaseResultMap" />
<association column="privilege" property="privilege" jdbcType="BIGINT" javaType="cn.lin.nsfw.role.entity.Privilege"
resultMap="cn.lin.nsfw.role.dao.PrivilegeMapper.BaseResultMap" />
</resultMap>
<sql id="Base_Column_List">
eid, privilege, role
</sql>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
rp.eid as rolePrivilege_eid,
<include refid="cn.lin.nsfw.role.dao.RoleMapper.Base_Column_List"><property name="alias" value="r"/></include>,
<include refid="cn.lin.nsfw.role.dao.PrivilegeMapper.Base_Column_List"><property name="alias" value="p"/></include>
from roleprivilege rp
left join jdrole r on r.eid = rp.role
left join privilege p on p.eid = rp.privilege
where rp.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from roleprivilege
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into roleprivilege (privilege, role)
values (#{privilege.eid,jdbcType=BIGINT}, #{role.eid,jdbcType=BIGINT})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into roleprivilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="privilege.eid != null">
privilege,
</if>
<if test="role.eid != null">
role,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="privilege.eid != null">
#{privilege.eid,jdbcType=BIGINT},
</if>
<if test="role.eid != null">
#{role.eid,jdbcType=BIGINT},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
update roleprivilege
<set>
<if test="privilege.eid != null">
privilege = #{privilege.eid,jdbcType=BIGINT},
</if>
<if test="role.eid != null">
role = #{role.eid,jdbcType=BIGINT},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
update roleprivilege
set privilege = #{privilege.eid,jdbcType=BIGINT},
role = #{role.eid,jdbcType=BIGINT}
where eid = #{eid,jdbcType=BIGINT}
</update>
<select id="getRole" resultMap="cn.lin.nsfw.role.dao.RoleMapper.BaseResultMap">
select eid,detail,name,roleCode,state from jdRole where role=#{eid}
</select>
<select id="getPrivilege" resultMap="cn.lin.nsfw.role.dao.PrivilegeMapper.BaseResultMap">
select eid,code,name from Privilege where privilege=#{eid}
</select>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into roleprivilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].privilege.eid!=null">
privilege,
</if>
<if test="list[0].role.eid!=null">
role,
</if>
</trim>
values
<foreach collection="list" index="index" item="item" separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.privilege.eid!=null">
#{item.privilege.eid,jdbcType=BIGINT},
</if>
<if test="item.role.eid!=null">
#{item.role.eid,jdbcType=BIGINT},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item" separator=";">
update roleprivilege
<set>
<if test="item.privilege.eid!=null">
privilege=#{item.privilege.eid,jdbcType=BIGINT},
</if>
<if test="item.role.eid!=null">
role=#{item.role.eid,jdbcType=BIGINT},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>PrivilegeMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.role.dao.PrivilegeMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.role.entity.Privilege">
<id column="privilege_eid" jdbcType="BIGINT" property="eid" />
<result column="privilege_code" jdbcType="VARCHAR" property="code" />
<result column="privilege_name" jdbcType="VARCHAR" property="name" />
</resultMap>
<sql id="Base_Column_List">
${alias}.eid as privilege_eid,
${alias}.code as privilege_code,
${alias}.name as privilege_name
</sql>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"><property name="alias" value="p"/></include>
from privilege p
where p.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from privilege
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.role.entity.Privilege">
insert into privilege (eid, code, name
)
values (#{eid,jdbcType=BIGINT}, #{code,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR}
)
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.role.entity.Privilege">
insert into privilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="eid != null">
eid,
</if>
<if test="code != null">
code,
</if>
<if test="name != null">
name,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="eid != null">
#{eid,jdbcType=BIGINT},
</if>
<if test="code != null">
#{code,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.role.entity.Privilege">
update privilege
<set>
<if test="code != null">
code = #{code,jdbcType=VARCHAR},
</if>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.role.entity.Privilege">
update privilege
set code = #{code,jdbcType=VARCHAR},
name = #{name,jdbcType=VARCHAR}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into privilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].code!=null">
code,
</if>
<if test="list[0].name!=null">
name,
</if>
</trim>
values
<foreach collection="list" index="index" item="item" separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.code!=null">
#{item.code,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
#{item.name,jdbcType=VARCHAR},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item" separator=";">
update privilege
<set>
<if test="item.code!=null">
code=#{item.code,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
name=#{item.name,jdbcType=VARCHAR},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>我说说在学映射关系的时候遇到的问题：
1、column其实可以指字段名，也可以指查找数据的别名，多级查询时mybatis是通过别名去给对象里面的字段设值。
2、ofType是指类名（最好写全类名）
3、启动是出现错误是，认真看清报的是什么错误，mybatis都会很清晰的反映出来
4、使用Id查询对象时，就一定为点到id，例如：“role=#{item.role.eid,jdbcType=BIGINT},”
5、如果自增主键时，可以不必重新查询主键（<selectKey>），可以通过配置全局属性来实现
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 使用jdbc的getGeneratedKeys 获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true"/>
<!-- 使用列别名替换列名 默认：true -->
<setting name="useColumnLabel" value="true"/>
<!-- 全局懒加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 开启驼峰命名转换：Table{create_time} 》 Entity{createTime} -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!-- 打印查询语句 -->
<setting name="logImpl" value="STDOUT_LOGGING" />
</settings>
</configuration>最后，还是地多看看别人的源码，文档。http://www.mybatis.org/mybatis-3/zh/index.html
数据表：
-- ----------------------------
-- Table structure for jdrole
-- ----------------------------
DROP TABLE IF EXISTS `jdrole`;
CREATE TABLE `jdrole` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`detail` varchar(255) DEFAULT NULL,
`name` varchar(255) DEFAULT NULL,
`roleCode` varchar(255) DEFAULT NULL,
`state` varchar(255) DEFAULT NULL,
PRIMARY KEY (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=20 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for jduser
-- ----------------------------
DROP TABLE IF EXISTS `jduser`;
CREATE TABLE `jduser` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`account` varchar(255) DEFAULT NULL,
`birthday` datetime DEFAULT NULL,
`dept` varchar(255) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`gender` tinyint(1) DEFAULT NULL,
`headImg` bigint(20) DEFAULT NULL,
`memo` varchar(255) DEFAULT NULL,
`mobile` varchar(255) DEFAULT NULL,
`name` varchar(255) DEFAULT NULL,
`password` varchar(255) DEFAULT NULL,
`state` varchar(255) DEFAULT NULL,
PRIMARY KEY (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for privilege
-- ----------------------------
DROP TABLE IF EXISTS `privilege`;
CREATE TABLE `privilege` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`code` varchar(255) DEFAULT NULL,
`name` varchar(255) DEFAULT NULL,
PRIMARY KEY (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for roleprivilege
-- ----------------------------
DROP TABLE IF EXISTS `roleprivilege`;
CREATE TABLE `roleprivilege` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`privilege` bigint(20) DEFAULT NULL,
`role` bigint(20) DEFAULT NULL,
PRIMARY KEY (`eid`),
KEY `FK6E0EABB56BFB671` (`role`),
KEY `FK6E0EABB50471437` (`privilege`),
CONSTRAINT `FK6E0EABB50471437` FOREIGN KEY (`privilege`) REFERENCES `privilege` (`eid`),
CONSTRAINT `FK6E0EABB56BFB671` FOREIGN KEY (`role`) REFERENCES `jdrole` (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=35 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Table structure for userrole
-- ----------------------------
DROP TABLE IF EXISTS `userrole`;
CREATE TABLE `userrole` (
`eid` bigint(20) NOT NULL AUTO_INCREMENT,
`role` bigint(20) DEFAULT NULL,
`user` bigint(20) DEFAULT NULL,
PRIMARY KEY (`eid`),
KEY `FKF3F7670156BFB671` (`role`),
KEY `FKF3F767014C46FFB0` (`user`),
CONSTRAINT `FKF3F767014C46FFB0` FOREIGN KEY (`user`) REFERENCES `jduser` (`eid`),
CONSTRAINT `FKF3F7670156BFB671` FOREIGN KEY (`role`) REFERENCES `jdrole` (`eid`)
) ENGINE=InnoDB AUTO_INCREMENT=27 DEFAULT CHARSET=utf8;
javaBean
public class User implements Serializable{
private static final long serialVersionUID = -3355898752454617959L;
private Long eid;
private String name;
private String password;
private String dept;//部门
private String account;//账户
private Long headImg;//头像保存Files的ID
private Boolean gender;//性别
private String state;//状态
private String mobile;//手机号码
private String email;//邮箱
private Date birthday;//生日
private String memo;//备忘录
private List<UserRole> userRoles = new ArrayList<UserRole>(0);
//用户状态
public static String USER_STATE_VALID = "1";//有效
public static String USER_STATE_INVALID = "0";//无效
}
public class UserRole implements Serializable {
private static final long serialVersionUID = 987951779822832066L;
private Long eid;
private User user;
private Role role;
}
public class Role implements Serializable {
private static final long serialVersionUID = -5948865302742232919L;
private Long eid;
private String name;//角色名
private String roleCode;//角色编码
private String detail;//详细
private String state;//状态
private List<RolePrivilege> rolePrivileges = new ArrayList<RolePrivilege>(0);
private List<UserRole> userRoles = new ArrayList<UserRole>(0);
public static String ROLE_STATE_VALID = "1";//有效
public static String ROLE_STATE_INVALID = "0";//无效
}
public class Privilege implements Serializable {
private static final long serialVersionUID = -7358970078992523810L;
private Long eid;
private String name;//权限名
private String code;
}
public class RolePrivilege implements Serializable {
private static final long serialVersionUID = -5659074190267257788L;
private Long eid;
private Role role;
private Privilege privilege;
}最后放上*mapper.xml文件
UserMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.user.dao.UserMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.user.entity.User">
<id column="user_eid" jdbcType="BIGINT" property="eid" />
<result column="user_account" jdbcType="VARCHAR" property="account" />
<result column="user_birthday" jdbcType="TIMESTAMP" property="birthday" />
<result column="user_dept" jdbcType="VARCHAR" property="dept" />
<result column="user_email" jdbcType="VARCHAR" property="email" />
<result column="user_gender" jdbcType="BIT" property="gender" />
<result column="user_headImg" jdbcType="BIGINT" property="headImg" />
<result column="user_memo" jdbcType="VARCHAR" property="memo" />
<result column="user_mobile" jdbcType="VARCHAR" property="mobile" />
<result column="user_name" jdbcType="VARCHAR" property="name" />
<result column="user_password" jdbcType="VARCHAR" property="password" />
<result column="user_state" jdbcType="VARCHAR" property="state" />
<!-- 在 UserRole 类型的 ArrayList 中的 userRoles 的集合。 -->
<collection column="user_eid" javaType="ArrayList" property="userRoles" ofType="cn.lin.nsfw.user.entity.UserRole"
select="getUserRoles" fetchType="lazy"/>
</resultMap>
<sql id="Base_Column_List">
${alias}.eid as user_eid,
${alias}.account as user_account,
${alias}.birthday as user_birthday,
${alias}.dept as user_dept,
${alias}.email as user_email,
${alias}.gender as user_gender,
${alias}.headImg as user_headImg,
${alias}.memo as user_memo,
${alias}.mobile as user_mobile,
${alias}.name as user_name,
${alias}.password as user_password,
${alias}.state as user_state
</sql>
<select id="getUserRoles" parameterType="java.lang.Long" resultMap="cn.lin.nsfw.user.dao.UserRoleMapper.BaseResultMap">
select
ur.eid as userRole_eid
from UserRole ur
where ur.user=#{eid}
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"><property name="alias" value="u"/></include>
from jduser u
where u.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from jduser
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.user.entity.User">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jduser (account, birthday, dept, email, gender, headImg, memo, mobile, name, password, state)
values (#{account,jdbcType=VARCHAR}, #{birthday,jdbcType=TIMESTAMP},
#{dept,jdbcType=VARCHAR},
#{email,jdbcType=VARCHAR}, #{gender,jdbcType=BIT}, #{headImg,jdbcType=BIGINT},
#{memo,jdbcType=VARCHAR}, #{mobile,jdbcType=VARCHAR},
#{name,jdbcType=VARCHAR},
#{password,jdbcType=VARCHAR}, #{state,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.user.entity.User">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jduser
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="account != null">
account,
</if>
<if test="birthday != null">
birthday,
</if>
<if test="dept != null">
dept,
</if>
<if test="email != null">
email,
</if>
<if test="gender != null">
gender,
</if>
<if test="headImg != null">
headImg,
</if>
<if test="memo != null">
memo,
</if>
<if test="mobile != null">
mobile,
</if>
<if test="name != null">
name,
</if>
<if test="password != null">
password,
</if>
<if test="state != null">
state,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="account != null">
#{account,jdbcType=VARCHAR},
</if>
<if test="birthday != null">
#{birthday,jdbcType=TIMESTAMP},
</if>
<if test="dept != null">
#{dept,jdbcType=VARCHAR},
</if>
<if test="email != null">
#{email,jdbcType=VARCHAR},
</if>
<if test="gender != null">
#{gender,jdbcType=BIT},
</if>
<if test="headImg != null">
#{headImg,jdbcType=BIGINT},
</if>
<if test="memo != null">
#{memo,jdbcType=VARCHAR},
</if>
<if test="mobile != null">
#{mobile,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
<if test="password != null">
#{password,jdbcType=VARCHAR},
</if>
<if test="state != null">
#{state,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryK
1261f
eySelective" parameterType="cn.lin.nsfw.user.entity.User">
update jduser
<set>
<if test="account != null">
account = #{account,jdbcType=VARCHAR},
</if>
<if test="birthday != null">
birthday = #{birthday,jdbcType=TIMESTAMP},
</if>
<if test="dept != null">
dept = #{dept,jdbcType=VARCHAR},
</if>
<if test="email != null">
email = #{email,jdbcType=VARCHAR},
</if>
<if test="gender != null">
gender = #{gender,jdbcType=BIT},
</if>
<if test="headImg != null">
headImg = #{headImg,jdbcType=BIGINT},
</if>
<if test="memo != null">
memo = #{memo,jdbcType=VARCHAR},
</if>
<if test="mobile != null">
mobile = #{mobile,jdbcType=VARCHAR},
</if>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
<if test="password != null">
password = #{password,jdbcType=VARCHAR},
</if>
<if test="state != null">
state = #{state,jdbcType=VARCHAR},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.user.entity.User">
update jduser
set account = #{account,jdbcType=VARCHAR},
birthday = #{birthday,jdbcType=TIMESTAMP},
dept = #{dept,jdbcType=VARCHAR},
email = #{email,jdbcType=VARCHAR},
gender = #{gender,jdbcType=BIT},
headImg = #{headImg,jdbcType=BIGINT},
memo = #{memo,jdbcType=VARCHAR},
mobile = #{mobile,jdbcType=VARCHAR},
name = #{name,jdbcType=VARCHAR},
password = #{password,jdbcType=VARCHAR},
state = #{state,jdbcType=VARCHAR}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into jduser
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].account!=null">
account,
</if>
<if test="list[0].birthday!=null">
birthday,
</if>
<if test="list[0].dept!=null">
dept,
</if>
<if test="list[0].email!=null">
email,
</if>
<if test="list[0].gender!=null">
gender,
</if>
<if test="list[0].headImg!=null">
headImg,
</if>
<if test="list[0].memo!=null">
memo,
</if>
<if test="list[0].mobile!=null">
mobile,
</if>
<if test="list[0].name!=null">
name,
</if>
<if test="list[0].password!=null">
password,
</if>
<if test="list[0].state!=null">
state,
</if>
</trim>
values
<foreach collection="list" index="index" item="item"
separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.account!=null">
#{item.account,jdbcType=VARCHAR},
</if>
<if test="item.birthday!=null">
#{item.birthday,jdbcType=TIMESTAMP},
</if>
<if test="item.dept!=null">
#{item.dept,jdbcType=VARCHAR},
</if>
<if test="item.email!=null">
#{item.email,jdbcType=VARCHAR},
</if>
<if test="item.gender!=null">
#{item.gender,jdbcType=BIT},
</if>
<if test="item.headImg!=null">
#{item.headImg,jdbcType=BIGINT},
</if>
<if test="item.memo!=null">
#{item.memo,jdbcType=VARCHAR},
</if>
<if test="item.mobile!=null">
#{item.mobile,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.password!=null">
#{item.password,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
#{item.state,jdbcType=VARCHAR},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item"
separator=";">
update jduser
<set>
<if test="item.account!=null">
account=#{item.account,jdbcType=VARCHAR},
</if>
<if test="item.birthday!=null">
birthday=#{item.birthday,jdbcType=TIMESTAMP},
</if>
<if test="item.dept!=null">
dept=#{item.dept,jdbcType=VARCHAR},
</if>
<if test="item.email!=null">
email=#{item.email,jdbcType=VARCHAR},
</if>
<if test="item.gender!=null">
gender=#{item.gender,jdbcType=BIT},
</if>
<if test="item.headImg!=null">
headImg=#{item.headImg,jdbcType=BIGINT},
</if>
<if test="item.memo!=null">
memo=#{item.memo,jdbcType=VARCHAR},
</if>
<if test="item.mobile!=null">
mobile=#{item.mobile,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
name=#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.password!=null">
password=#{item.password,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
state=#{item.state,jdbcType=VARCHAR},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>UserRoleMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.user.dao.UserRoleMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.user.entity.UserRole">
<id column="userRole_eid" jdbcType="BIGINT" property="eid" />
<association column="user" property="user" jdbcType="BIGINT" javaType="cn.lin.nsfw.user.entity.User"
resultMap="cn.lin.nsfw.user.dao.UserMapper.BaseResultMap"/>
<association column="role" property="role" jdbcType="BIGINT" javaType="cn.lin.nsfw.role.entity.Role"
resultMap="cn.lin.nsfw.role.dao.RoleMapper.BaseResultMap"/>
</resultMap>
<sql id="Base_Column_List">
eid, role, user
</sql>
<select id="getUser" parameterType="java.lang.Long" resultType="cn.lin.nsfw.user.entity.User">
select
eid as user_eid,
account as user_account,
birthday as user_birthday,
dept as user_dept,
email as user_email,
gender as user_gender,
headImg as user_headImg,
memo as user_memo,
mobile as user_mobile,
name as user_name,
password as user_password,
state as user_state
from jdUser u where u.eid=#{eid}
</select>
<select id="getRole" parameterType="java.lang.Long" resultType="cn.lin.nsfw.role.entity.Role">
select
eid as role_eid,
name as role_name,
roleCode as role_roleCode,
detail as role_detail,
state as role_state
from jdRole r where r.eid=#{eid}
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
ur.eid as userRole_eid,
<include refid="cn.lin.nsfw.user.dao.UserMapper.Base_Column_List"><property name="alias" value="u"/></include>,
<include refid="cn.lin.nsfw.role.dao.RoleMapper.Base_Column_List"><property name="alias" value="r"/></include>
from userrole ur
left join jduser u on u.eid = ur.user
left join jdrole r on r.eid = ur.role
where ur.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from userrole
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.user.entity.UserRole">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into userrole (role, [user])
values (#{role.eid,jdbcType=BIGINT}, #{user.eid,jdbcType=BIGINT})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.user.entity.UserRole">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into userrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="role.eid != null">
role,
</if>
<if test="user.eid != null">
[user],
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="role.eid != null">
#{role.eid,jdbcType=BIGINT},
</if>
<if test="user.eid != null">
#{user.eid,jdbcType=BIGINT},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.user.entity.UserRole">
update userrole
<set>
<if test="role.eid != null">
role = #{role.eid,jdbcType=BIGINT},
</if>
<if test="user.eid != null">
[user] = #{user.eid,jdbcType=BIGINT},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.user.entity.UserRole">
update userrole
set role = #{role.eid,jdbcType=BIGINT},
[user] = #{user.eid,jdbcType=BIGINT}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into userrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].role.eid!=null">
role,
</if>
<if test="list[0].user.eid!=null">
[user],
</if>
</trim>
values
<foreach collection="list" index="index" item="item"
separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.role.eid!=null">
#{item.role.eid,jdbcType=BIGINT},
</if>
<if test="item.user.eid!=null">
#{item.user.eid,jdbcType=BIGINT},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item"
separator=";">
update userrole
<set>
<if test="item.role.eid!=null">
role=#{item.role.eid,jdbcType=BIGINT},
</if>
<if test="item.user.eid!=null">
[user]=#{item.user.eid,jdbcType=BIGINT},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>RoleMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.role.dao.RoleMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.role.entity.Role">
<id column="role_eid" jdbcType="BIGINT" property="eid" />
<result column="role_detail" jdbcType="VARCHAR" property="detail" />
<result column="role_name" jdbcType="VARCHAR" property="name" />
<result column="role_roleCode" jdbcType="VARCHAR" property="roleCode" />
<result column="role_state" jdbcType="VARCHAR" property="state" />
<collection column="role_eid" javaType="ArrayList" property="userRoles" ofType="cn.lin.nsfw.user.entity.UserRole" select="getUserRoles" fetchType="lazy"/>
<collection column="role_eid" javaType="ArrayList" property="rolePrivileges" ofType="cn.lin.nsfw.role.entity.RolePrivilege" select="getRolePrivileges" fetchType="lazy"/>
</resultMap>
<sql id="Base_Column_List">
${alias}.eid as role_eid,
${alias}.detail as role_detail,
${alias}.name as role_name,
${alias}.roleCode as role_roleCode,
${alias}.state as role_state
</sql>
<select id="getUserRoles" parameterType="java.lang.Long" resultMap="cn.lin.nsfw.user.dao.UserRoleMapper.BaseResultMap">
select
ur.eid as userRole_eid
from UserRole ur
where ur.role=#{eid}
</select>
<select id="getRolePrivileges" parameterType="java.lang.Long" resultMap="cn.lin.nsfw.role.dao.RolePrivilegeMapper.BaseResultMap">
select
rp.eid as rolePrivilege_eid,
<include refid="cn.lin.nsfw.role.dao.PrivilegeMapper.Base_Column_List"><property name="alias" value="p"/></include>
from RolePrivilege rp
left join Privilege p on p.eid = rp.privilege
where rp.role=#{eid}
</select>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"><property name="alias" value="r"/></include>
from jdrole r
where r.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from jdrole
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.role.entity.Role">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jdrole (detail, name, roleCode,
state)
values (#{detail,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR},
#{rolecode,jdbcType=VARCHAR},
#{state,jdbcType=VARCHAR})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.role.entity.Role">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into jdrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="detail != null">
detail,
</if>
<if test="name != null">
name,
</if>
<if test="rolecode != null">
roleCode,
</if>
<if test="state != null">
state,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="detail != null">
#{detail,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
<if test="rolecode != null">
#{rolecode,jdbcType=VARCHAR},
</if>
<if test="state != null">
#{state,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.role.entity.Role">
update jdrole
<set>
<if test="detail != null">
detail = #{detail,jdbcType=VARCHAR},
</if>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
<if test="rolecode != null">
roleCode = #{rolecode,jdbcType=VARCHAR},
</if>
<if test="state != null">
state = #{state,jdbcType=VARCHAR},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.role.entity.Role">
update jdrole
set detail = #{detail,jdbcType=VARCHAR},
name = #{name,jdbcType=VARCHAR},
roleCode = #{rolecode,jdbcType=VARCHAR},
state = #{state,jdbcType=VARCHAR}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into jdrole
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].detail!=null">
detail,
</if>
<if test="list[0].name!=null">
name,
</if>
<if test="list[0].rolecode!=null">
roleCode,
</if>
<if test="list[0].state!=null">
state,
</if>
</trim>
values
<foreach collection="list" index="index" item="item"
separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.detail!=null">
#{item.detail,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.rolecode!=null">
#{item.rolecode,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
#{item.state,jdbcType=VARCHAR},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item"
separator=";">
update jdrole
<set>
<if test="item.detail!=null">
detail=#{item.detail,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
name=#{item.name,jdbcType=VARCHAR},
</if>
<if test="item.rolecode!=null">
roleCode=#{item.rolecode,jdbcType=VARCHAR},
</if>
<if test="item.state!=null">
state=#{item.state,jdbcType=VARCHAR},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>RolePrivilegeMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.role.dao.RolePrivilegeMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.role.entity.RolePrivilege">
<id column="rolePrivilege_eid" jdbcType="BIGINT" property="eid" />
<association column="role" property="role" jdbcType="BIGINT" javaType="cn.lin.nsfw.role.entity.Role"
resultMap="cn.lin.nsfw.role.dao.RoleMapper.BaseResultMap" />
<association column="privilege" property="privilege" jdbcType="BIGINT" javaType="cn.lin.nsfw.role.entity.Privilege"
resultMap="cn.lin.nsfw.role.dao.PrivilegeMapper.BaseResultMap" />
</resultMap>
<sql id="Base_Column_List">
eid, privilege, role
</sql>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
rp.eid as rolePrivilege_eid,
<include refid="cn.lin.nsfw.role.dao.RoleMapper.Base_Column_List"><property name="alias" value="r"/></include>,
<include refid="cn.lin.nsfw.role.dao.PrivilegeMapper.Base_Column_List"><property name="alias" value="p"/></include>
from roleprivilege rp
left join jdrole r on r.eid = rp.role
left join privilege p on p.eid = rp.privilege
where rp.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from roleprivilege
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into roleprivilege (privilege, role)
values (#{privilege.eid,jdbcType=BIGINT}, #{role.eid,jdbcType=BIGINT})
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
<selectKey keyProperty="eid" order="AFTER" resultType="java.lang.Long">
SELECT LAST_INSERT_ID()
</selectKey>
insert into roleprivilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="privilege.eid != null">
privilege,
</if>
<if test="role.eid != null">
role,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="privilege.eid != null">
#{privilege.eid,jdbcType=BIGINT},
</if>
<if test="role.eid != null">
#{role.eid,jdbcType=BIGINT},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
update roleprivilege
<set>
<if test="privilege.eid != null">
privilege = #{privilege.eid,jdbcType=BIGINT},
</if>
<if test="role.eid != null">
role = #{role.eid,jdbcType=BIGINT},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.role.entity.RolePrivilege">
update roleprivilege
set privilege = #{privilege.eid,jdbcType=BIGINT},
role = #{role.eid,jdbcType=BIGINT}
where eid = #{eid,jdbcType=BIGINT}
</update>
<select id="getRole" resultMap="cn.lin.nsfw.role.dao.RoleMapper.BaseResultMap">
select eid,detail,name,roleCode,state from jdRole where role=#{eid}
</select>
<select id="getPrivilege" resultMap="cn.lin.nsfw.role.dao.PrivilegeMapper.BaseResultMap">
select eid,code,name from Privilege where privilege=#{eid}
</select>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into roleprivilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].privilege.eid!=null">
privilege,
</if>
<if test="list[0].role.eid!=null">
role,
</if>
</trim>
values
<foreach collection="list" index="index" item="item" separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.privilege.eid!=null">
#{item.privilege.eid,jdbcType=BIGINT},
</if>
<if test="item.role.eid!=null">
#{item.role.eid,jdbcType=BIGINT},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item" separator=";">
update roleprivilege
<set>
<if test="item.privilege.eid!=null">
privilege=#{item.privilege.eid,jdbcType=BIGINT},
</if>
<if test="item.role.eid!=null">
role=#{item.role.eid,jdbcType=BIGINT},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>PrivilegeMapper.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="cn.lin.nsfw.role.dao.PrivilegeMapper">
<resultMap id="BaseResultMap" type="cn.lin.nsfw.role.entity.Privilege">
<id column="privilege_eid" jdbcType="BIGINT" property="eid" />
<result column="privilege_code" jdbcType="VARCHAR" property="code" />
<result column="privilege_name" jdbcType="VARCHAR" property="name" />
</resultMap>
<sql id="Base_Column_List">
${alias}.eid as privilege_eid,
${alias}.code as privilege_code,
${alias}.name as privilege_name
</sql>
<select id="selectByPrimaryKey" parameterType="java.lang.Long" resultMap="BaseResultMap">
select
<include refid="Base_Column_List"><property name="alias" value="p"/></include>
from privilege p
where p.eid = #{eid,jdbcType=BIGINT}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.Long">
delete from privilege
where eid = #{eid,jdbcType=BIGINT}
</delete>
<insert id="insert" parameterType="cn.lin.nsfw.role.entity.Privilege">
insert into privilege (eid, code, name
)
values (#{eid,jdbcType=BIGINT}, #{code,jdbcType=VARCHAR}, #{name,jdbcType=VARCHAR}
)
</insert>
<insert id="insertSelective" parameterType="cn.lin.nsfw.role.entity.Privilege">
insert into privilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="eid != null">
eid,
</if>
<if test="code != null">
code,
</if>
<if test="name != null">
name,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="eid != null">
#{eid,jdbcType=BIGINT},
</if>
<if test="code != null">
#{code,jdbcType=VARCHAR},
</if>
<if test="name != null">
#{name,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="cn.lin.nsfw.role.entity.Privilege">
update privilege
<set>
<if test="code != null">
code = #{code,jdbcType=VARCHAR},
</if>
<if test="name != null">
name = #{name,jdbcType=VARCHAR},
</if>
</set>
where eid = #{eid,jdbcType=BIGINT}
</update>
<update id="updateByPrimaryKey" parameterType="cn.lin.nsfw.role.entity.Privilege">
update privilege
set code = #{code,jdbcType=VARCHAR},
name = #{name,jdbcType=VARCHAR}
where eid = #{eid,jdbcType=BIGINT}
</update>
<insert id="insertBatchSelective" parameterType="java.util.List">
insert into privilege
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="list[0].eid!=null">
eid,
</if>
<if test="list[0].code!=null">
code,
</if>
<if test="list[0].name!=null">
name,
</if>
</trim>
values
<foreach collection="list" index="index" item="item" separator=",">
<trim prefix=" (" suffix=")" suffixOverrides=",">
<if test="item.eid!=null">
#{item.eid,jdbcType=BIGINT},
</if>
<if test="item.code!=null">
#{item.code,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
#{item.name,jdbcType=VARCHAR},
</if>
</trim>
</foreach>
</insert>
<update id="updateBatchByPrimaryKeySelective" parameterType="java.util.List">
<foreach collection="list" index="index" item="item" separator=";">
update privilege
<set>
<if test="item.code!=null">
code=#{item.code,jdbcType=VARCHAR},
</if>
<if test="item.name!=null">
name=#{item.name,jdbcType=VARCHAR},
</if>
</set>
where
eid = #{item.eid,jdbcType=BIGINT}
</foreach>
</update>
</mapper>我说说在学映射关系的时候遇到的问题：
1、column其实可以指字段名，也可以指查找数据的别名，多级查询时mybatis是通过别名去给对象里面的字段设值。
2、ofType是指类名（最好写全类名）
3、启动是出现错误是，认真看清报的是什么错误，mybatis都会很清晰的反映出来
4、使用Id查询对象时，就一定为点到id，例如：“role=#{item.role.eid,jdbcType=BIGINT},”
5、如果自增主键时，可以不必重新查询主键（<selectKey>），可以通过配置全局属性来实现
mybatis-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 使用jdbc的getGeneratedKeys 获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true"/>
<!-- 使用列别名替换列名 默认：true -->
<setting name="useColumnLabel" value="true"/>
<!-- 全局懒加载 -->
<setting name="lazyLoadingEnabled" value="true"/>
<!-- 开启驼峰命名转换：Table{create_time} 》 Entity{createTime} -->
<setting name="mapUnderscoreToCamelCase" value="true"/>
<!-- 打印查询语句 -->
<setting name="logImpl" value="STDOUT_LOGGING" />
</settings>
</configuration>最后，还是地多看看别人的源码，文档。http://www.mybatis.org/mybatis-3/zh/index.html
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