02_MyBatis项目结构，所需jar包，ehcache.xml配置，log4j.properties,sqlMapConfig.xml配置，SqlMapGenerator.xml配置

项目结构（所需jar包，配置文件）






sqlMapConfig.xml的配置内容如下：

<?xmlversion="1.0"encoding="UTF-8"?><!DOCTYPEconfigurationPUBLIC"-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"><configuration> <!--开启延迟加载 --> <settings> <!--全局的延迟加载的开关必须要开启 --> <setting name="lazyLoadingEnabled" value="true"/> <!--积极加载设置成false --> <setting name="aggressiveLazyLoading" value="false"/> <!--开启二级缓存,缓存中只要是需要配置的针对的都是二级缓存 --> <setting name="cacheEnabled" value="true"/> </settings> <typeAliases> <!-- 自定义别名： type:要定义别名的数据类型 alias：别名的内容 --> <!-- 非自定义别名： 在jdk中的所用的类的别名直接只用类名即可（不区分大小写） 如果是基本数据类型的包装类还可以使用基本数据类型的名字 --> <typeAlias type="com.rl.model1.QueryCondition" alias="qc"/> <typeAlias type="com.rl.model1.Person" alias="person"/> </typeAliases> <!--数据库的环境的配置 --> <environments default="development"> <environment id="development"> <transactionManager type="JDBC"/> <dataSource type="POOLED"> <property name="driver" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/mybatis"/> <property name="username" value="root"/> <property name="password" value="123456"/> </dataSource> </environment> </environments> <!--集中管理表的映射文件 --> <mappers> <mapperresource="com/rl/mapper/PersonTestMapper.xml"/> <mapperresource="com/rl/mapper/PersonMapper.xml"/> <mapperresource="com/rl/mapper/RoleMapper.xml"/> <mapperresource="com/rl/mapper/OrdersMapper.xml"/> <mapperresource="com/rl/mapper/OrderDetailMapper.xml"/> </mappers></configuration>

sqlMapGenerator.xml的配置如下：

<?xmlversion="1.0"encoding="UTF-8"?><!DOCTYPEgeneratorConfigurationPUBLIC"-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN""http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd"><generatorConfiguration> <!--指定mysql的驱动包的路径，不要放在中文路径下 --> <classPathEntrylocation="E:\MyEclipse10\MyBatis\lib\mysql-connector-java-5.0.8-bin.jar"/> <!--配置数据源和生成的代码所存放的位置 --> <contextid="context1"> <commentGenerator> <!--去除自动生成的注释 --> <propertyname="suppressAllComments"value="true"/> </commentGenerator> <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1:3306/mybatis" userId="root" password="123456"/> <!--所生成的实体类的位置默认资源包src --> <javaModelGeneratortargetPackage="com.rl.model1" targetProject="mybatis0420"/> <!--所生成的sqlMap的影射文件的位置,默认资源包src --> <sqlMapGeneratortargetPackage="com.rl.mapper" targetProject="mybatis0420"/> <!--为哪些表生成代码 tableName:表名 schema:不用填写,其余属性是禁用例子查询的生成 --> <tableschema=""tableName="role"enableCountByExample="false" enableUpdateByExample="false"enableDeleteByExample="false" enableSelectByExample="false"selectByExampleQueryId="false"/> <tableschema=""tableName="person_role"enableCountByExample="false" enableUpdateByExample="false"enableDeleteByExample="false" enableSelectByExample="false"selectByExampleQueryId="false"/> </context></generatorConfiguration>

log4j.properties的配置内容如下：

log4j.rootLogger=DEBUG,Console#Consolelog4j.appender.Console=org.apache.log4j.ConsoleAppenderlog4j.appender.Console.layout=org.apache.log4j.PatternLayoutlog4j.appender.Console.layout.ConversionPattern=%d[%t]%-5p[%c]-%m%nlog4j.logger.java.sql.ResultSet=INFOlog4j.logger.org.apache=INFOlog4j.logger.java.sql.Connection=DEBUGlog4j.logger.java.sql.Statement=DEBUGlog4j.logger.java.sql.PreparedStatement=DEBUG

ehcache.xml的配置内容如下：

<ehcachexmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="../config/ehcache.xsd"> <diskStorepath="java.io.tmpdir"/> <defaultCache maxElementsInMemory="10000" eternal="false" timeToIdleSeconds="120" timeToLiveSeconds="120" maxElementsOnDisk="10000000" diskExpiryThreadIntervalSeconds="120" memoryStoreEvictionPolicy="LRU"> <persistencestrategy="localTempSwap"/> </defaultCache></ehcache>

4 数据库表创建数据库：create databasemybatis; use mybatis;订单.sql

/*==============================================================*//* DBMS name: MySQL 5.0 *//* Created on: 2014/8/7 15:34:20 *//*==============================================================*/ drop table if exists ORDERS; drop table if exists ORDER_DETAIL; /*==============================================================*//* Table: ORDERS *//*==============================================================*/create table ORDERS( ORDER_ID int(10) not null auto_increment, PERSON_ID int(10), TOTAL_PRICE float(10,2), ADDR varchar(50), primary key (ORDER_ID)); /*==============================================================*//* Table: ORDER_DETAIL *//*==============================================================*/create table ORDER_DETAIL( DETAIL_ID int(10) not null auto_increment, ORDER_ID int(10), PRICE float(10,2), QUANTITY int(10), ITEM_NAME varchar(10), primary key (DETAIL_ID));

角色表.sql

/*==============================================================*//* DBMS name: MySQL 5.0 *//* Created on: 2014/8/7 16:28:01 *//*==============================================================*/ drop table if exists PERSON_ROLE; drop table if exists ROLE; /*==============================================================*//* Table: PERSON_ROLE *//*==============================================================*/create table PERSON_ROLE( PERSON_ID int(10), ROLE_ID int(10)); /*==============================================================*//* Table: ROLE *//*==============================================================*/create table ROLE( ROLE_ID int(10) not null auto_increment, ROLE_NAME varchar(10), DESCRIPT varchar(50), primary key (ROLE_ID));

人员表.sql

/*==============================================================*//* DBMS name: MySQL 5.0 *//* Created on: 2014/8/7 9:59:18 *//*==============================================================*/ drop table if exists PERSON; /*==============================================================*//* Table: PERSON *//*==============================================================*/create table PERSON( PERSON_ID int(10) not null auto_increment, NAME varchar(10), GENDER varchar(1), PERSON_ADDR varchar(50), BIRTHDAY date, primary key (PERSON_ID));

人员测试表.sql

/*==============================================================*//* DBMS name: MySQL 5.0 *//* Created on: 2014/8/7 9:15:56 *//*==============================================================*/ drop table if exists PERSON_TEST; /*==============================================================*//* Table: PERSON_TEST *//*==============================================================*/create table PERSON_TEST( ID int(10) not null auto_increment, NAME varchar(10), GENDER varchar(1), ADDRESS varchar(50), BIRTHDAY date, primary key (ID));

7JavaBean的编写Person.java

package com.rl.model; import java.util.Date;publicclass Person implements Serializable{ private Integerid; private Stringname; private Stringgender; private Stringaddress; private Datebirthday; public Integer getId() { returnid; } publicvoid setId(Integer id) { this.id = id; } public String getName() { returnname; } publicvoid setName(String name) { this.name = name; } public String getGender() { returngender; } publicvoid setGender(String gender) { this.gender = gender; } public String getAddress() { returnaddress; } publicvoid setAddress(String address) { this.address = address; } public DategetBirthday() { returnbirthday; } publicvoid setBirthday(Date birthday) { this.birthday = birthday; } @Override public String toString() { return"Person [id=" +id +", name=" +name +", gender=" +gender +", address=" +address +", birthday=" +birthday +"]"; }}

OrderDetail.java

package com.rl.model1; publicclass OrderDetail { private IntegerdetailId; private IntegerorderId; private Floatprice; private Integerquantity; private StringitemName; public Integer getDetailId() { returndetailId; } publicvoid setDetailId(Integer detailId) { this.detailId = detailId; } public Integer getOrderId() { returnorderId; } publicvoid setOrderId(Integer orderId) { this.orderId = orderId; } public Float getPrice() { returnprice; } publicvoid setPrice(Float price) { this.price = price; } public Integer getQuantity() { returnquantity; } publicvoid setQuantity(Integer quantity) { this.quantity = quantity; } public String getItemName() { returnitemName; } publicvoid setItemName(String itemName) { this.itemName = itemName; }}

Orders.java

package com.rl.model1; import java.util.List;publicclass Orders { private IntegerorderId; private IntegerpersonId; private FloattotalPrice; private Stringaddr; private List<OrderDetail>detailList; private Personperson; public Person getPerson() { returnperson; } publicvoid setPerson(Person person) { this.person = person; } public List<OrderDetail> getDetailList() { returndetailList; } publicvoid setDetailList(List<OrderDetail> detailList) { this.detailList = detailList; } public Integer getOrderId() { returnorderId; } publicvoid setOrderId(Integer orderId) { this.orderId = orderId; } public Integer getPersonId() { returnpersonId; } publicvoid setPersonId(Integer personId) { this.personId = personId; } public Float getTotalPrice() { returntotalPrice; } publicvoid setTotalPrice(Float totalPrice) { this.totalPrice = totalPrice; } public String getAddr() { returnaddr; } publicvoid setAddr(String addr) { this.addr = addr; }}

Person.java

package com.rl.model1; import java.io.Serializable;import java.util.Date;import java.util.List; import javax.management.relation.Role; /** *做二级缓存的时候需要实现Serializable */public class Person implements Serializable { private static final long serialVersionUID = 7728191033619971201L; private Integer personId; private String name; private String gender; private String personAddr; private Date birthday; private List<Orders> ordersList; private List<Role> roleList; public List<Role> getRoleList() { return roleList; } public void setRoleList(List<Role> roleList) { this.roleList = roleList; } public List<Orders> getOrdersList() { return ordersList; } public void setOrdersList(List<Orders> ordersList) { this.ordersList = ordersList; } public Integer getPersonId() { return personId; } public void setPersonId(Integer personId) { this.personId = personId; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getGender() { return gender; } public void setGender(String gender) { this.gender = gender; } public String getPersonAddr() { return personAddr; } public void setPersonAddr(String personAddr) { this.personAddr = personAddr; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } @Override public String toString() { return "Person [personId=" + personId + ", name=" + name + ", gender=" + gender + ", personAddr=" + personAddr + ", birthday=" + birthday + "]"; }}

PersonRole.java

package com.rl.model1; publicclassPersonRole { private IntegerpersonId; private IntegerroleId; public Integer getPersonId() { returnpersonId; } publicvoid setPersonId(Integer personId) { this.personId = personId; } public Integer getRoleId() { returnroleId; } publicvoid setRoleId(Integer roleId) { this.roleId = roleId; }}

QueryCondition.java

package com.rl.model1; import java.util.Date; publicclassQueryCondition { private Stringname; private Stringgender; private Datebirthday; public String getName() { returnname; } publicvoid setName(String name) { this.name = name; } public String getGender() { returngender; } publicvoid setGender(String gender) { this.gender = gender; } public Date getBirthday() { returnbirthday; } publicvoid setBirthday(Date birthday) { this.birthday = birthday; }}

Role.java

package com.rl.model1; import java.util.List;publicclass Role { private IntegerroleId; private StringroleName; private Stringdescript; private List<Person>personList; public List<Person> getPersonList() { returnpersonList; } publicvoid setPersonList(List<Person> personList) { this.personList = personList; } public Integer getRoleId() { returnroleId; } publicvoid setRoleId(Integer roleId) { this.roleId = roleId; } public String getRoleName() { returnroleName; } publicvoid setRoleName(String roleName) { this.roleName = roleName; } public String getDescript() { returndescript; } publicvoid setDescript(String descript) { this.descript = descript; }}

SqlHelper.java

package com.rl.util; import java.util.Date;import java.util.Map; import org.apache.ibatis.jdbc.SqlBuilder; public class SqlHelper { public String getSql(Map<String,Object> map) { //获得所有可能传递过来的参数 String name = (String) map.get("name"); String gender = (String) map.get("gender"); String personAddr = (String) map.get("personAddr"); Date birthday = (Date) map.get("birthday"); SqlBuilder.BEGIN(); //指定所有的列 SqlBuilder.SELECT("*"); SqlBuilder.FROM("person"); if(name != null){ //在SqlBuilder中不支持${} SqlBuilder.WHERE("name like '%"+name+"%'"); } if(gender != null){ SqlBuilder.WHERE("gender = #{gender}"); } if(personAddr != null){ //在SqlBuilder中不支持${} SqlBuilder.WHERE("person_addr like '%"+personAddr+"%'"); } if(birthday != null){ SqlBuilder.WHERE("birthday < #{birthday}"); } return SqlBuilder.SQL(); }}