Spring + mybatis整合实例应用
2014-07-25 17:42
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最近在学习java框架,各种搜集资料啊。。。项目结构图 (Spring3.0.2 +mybatis3.0.4)方案一: 通过配置文件整合Spring和mybatis应用数据库
对应的实体类
数据Dao接口
在config目录下进行Mapper文件配置
Mybatis应用配置文件MyBatis-Configuration.xml
Spring配置文件,本例中我们放在/WebRoot/WEB-INF/applicationContext.xml
同目录下的web.xml文件进行如下配置
配置说明:<context-param/> 节点配置contextConfigLocation属性是为了让ContextLoaderListener找到Spring上下文的位置并加载它,如果不指定contextConfigLocation,ContextLoaderListener会到/WEB-INF/目录下找applicationContext.xml来加载。<listener/> 节点上配了ContextLoaderListener。它实现了ServletContextListener接口,所以web server启动时ContextLoaderListener能读取到ServletContext,也就能通过<context-param/>指定的Spring上下文的路径来找到上下文并加载它。当然,如果你不需要Spring来管理你的Bean,可以去掉上面两个节点。定义service接口
实现service接口,执行dao操作
接下来写我们的测试用例
方案二:使用注解整合这次将配置文件放置在config目录下.数据库表与实体类同上数据dao接口定义
Service接口与实现不变.Spring配置文件内容如下
Web.xml文件配置如下
测试类大致上没有变化,只是ApplicationContext初始化的方法改变成了下面方式
至此我们Spring与mybatis整合实例应用演示完毕
-- --数据库 tb_user -- drop table if exists tb_user; create table tb_user( id int primary key auto_increment comment '主键', username varchar(40) not null unique comment '用户名', password varchar(40) not null comment '密码', email varchar(40) comment '邮件', age int comment '年龄', sex char(2) not null comment '性别' ); |
package com.icreate.entity; /** * * * @version : 1.0 * * @author : 苏若年 * * @since : 1.0 创建时间: 2013-4-9 上午11:15:50 * * @function: TODO * */ public class User { private int id; private String username; private String password; private String sex; private String email; private int age; //getter() and setter () } |
package com.icreate.dao; import java.util.List; import com.icreate.entity.User; /** * * * @version : 1.0 * * @author : 苏若年 * * @since : 1.0 创建时间: 2013-4-9 上午11:36:34 * * @function: TODO * */ public interface UserDao { public int insert(User user); public int update(User user); public int delete(String userName); public List selectAll(); public int countAll(); public User findByUserName(String userName); } |
<?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="com.icreate.dao.UserDao"> <select id="countAll" resultType="int"> <!-- 查询表中记录总数 --> select count(*) c from tb_user; </select> <select id="selectAll" resultType="com.icreate.entity.User"> <!-- 查询表中的所有用户 --> select * from tb_user order by username asc </select> <insert id="insert" parameterType="com.icreate.entity.User"> <!-- 向数据库中插入用户 --> insert into tb_user(username,password,email,sex,age) values(#{username},#{password},#{email},#{sex},#{age}) </insert> <update id="update" parameterType="com.icreate.entity.User"> <!-- 更新库中的用户 --> update tb_user set username=#{username},password=#{password},email=#{email},sex=#{sex},age=#{age} where username=#{username} </update> <delete id="delete" parameterType="String"> <!-- 删除用户 --> delete from tb_user where username=#{username} </delete> <select id="findByUserName" parameterType="String" resultType="com.icreate.entity.User"> <!-- 根据用户名查找用户 --> select * from tb_user where username=#{username} </select> </mapper> |
<?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> <mappers> <mapper resource="com/icreate/dao/UserDao.xml"/> </mappers> </configuration> |
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 配置数据源 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost:3306/db_mybatis?useUnicode= true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull"></property> <property name="username" value="root"></property> <property name="password" value="root"></property> </bean> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource" /> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:MyBatis-Configuration.xml"></property> <property name="dataSource" ref="dataSource" /> </bean><bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean"><property name="mapperInterface" value="com.icreate.dao.UserDao"></property><property name="sqlSessionFactory" ref="sqlSessionFactory"></property></bean><bean id="userService" class="com.icreate.service.impl.UserServiceImpl"><property name="userDao" ref="userDao"></property></bean></beans> |
<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">[/code] <context-param><param-name>contextConfigLocation</param-name><!-- applicationContext.xml文件在/WEB-INF/目錄下時可以這樣配置,--><param-value>/WEB-INF/applicationContext.xml</param-value></context-param><!-- 配置上下文监听 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app> |
package com.icreate.service;import java.util.List;import com.icreate.entity.User;/***** @version : 1.0** @author : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a>** @since : 1.0 创建时间: 2013-4-9 下午03:52:07** @function: TODO**/public interface UserService {public int insert(User user);public int update(User user);public int delete(String userName);public List<User> selectAll();public int countAll();public User findByUserName(String userName);} |
package com.icreate.service.impl;import java.util.List;import com.icreate.dao.UserDao;import com.icreate.entity.User;import com.icreate.service.UserService;/***** @version : 1.0** @author : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a>** @since : 1.0 创建时间: 2013-4-9 下午03:53:26** @function: TODO**/public class UserServiceImpl implements UserService{private UserDao userDao;public UserDao getUserDao() {return userDao;}public void setUserDao(UserDao userDao) {this.userDao = userDao;}public int countAll() {return this.userDao.countAll();}public int delete(String userName) {return this.userDao.delete(userName);}public User findByUserName(String userName) {return this.userDao.findByUserName(userName);}public int insert(User user) {return this.userDao.insert(user);}public List<User> selectAll() {return this.userDao.selectAll();}public int update(User user) {return this.userDao.update(user);}} |
package com.icreate.service;import java.util.List;import org.junit.Before;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.FileSystemXmlApplicationContext;import com.icreate.entity.User;/***** @version : 1.0** @author : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a>** @since : 1.0 创建时间: 2013-4-9 下午05:16:28** @function: TODO**/public class SpringBatis {ApplicationContext context = null;UserService userService = null;@Beforepublic void initContext(){this.context = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");this.userService = (UserService) context.getBean("userService");}@Testpublic void countAll(){System.out.println("数据库中的记录条数:" + userService.countAll());}@Testpublic void insert(){User user = new User();user.setUsername("苏若年");user.setPassword("passtest");user.setEmail("dennisit@163.com");user.setSex("男");user.setAge(23);userService.insert(user);}@Testpublic void selectAll(){List<User> list = userService.selectAll();for(int i=0; i<list.size(); i++){User user = list.get(i);System.out.println("用户名:" + user.getUsername() +"\t密码:" + user.getPassword() + "\t邮箱:" + user.getEmail());}}@Testpublic void update(){User user = new User();user.setUsername("苏若年");user.setPassword("xxxxxxxx");user.setEmail("xxxxxx@163xxx");user.setSex("男");user.setAge(23);userService.update(user);}@Testpublic void delete(){userService.delete("苏若年");}@Testpublic void findByName(){User user = userService.findByUserName("苏若年");System.out.println("用户名:" + user.getUsername() + "\t密码:" + user.getPassword() + "\t邮箱:" + user.getEmail());}} |
package com.icreate.dao;import java.util.List;import org.apache.ibatis.annotations.Delete;import org.apache.ibatis.annotations.Insert;import org.apache.ibatis.annotations.Select;import org.apache.ibatis.annotations.Update;import com.icreate.entity.User;/***** @version : 1.0** @author : 苏若年 <a href="mailto:DennisIT@163.com">发送邮件</a>** @since : 1.0 创建时间: 2013-4-9 上午11:36:34** @function: TODO**/public interface UserDao {@Insert("insert into tb_user(username,password,email,sex,age) values(#{username},#{password},#{email},#{sex},#{age})")public int insert(User user);@Update("update tb_user set username=#{username},password=#{password},email=#{email},sex=#{sex},age=#{age} where username=#{username}")public int update(User user);@Delete("delete from tb_user where username=#{username}")public int delete(String userName);@Select("select * from tb_user ")public List<User> selectAll();@Select("select count(*) from tb_user")public int countAll();@Select("select * from tb_user where username=#{username}")public User findByUserName(String userName);} |
<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 配置数据源 --><bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver"></property><property name="url" value="jdbc:mysql://localhost:3306/db_mybatis?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull"></property><property name="username" value="root"></property><property name="password" value="root"></property></bean><bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource" /></bean><bean id="userDao" class="org.mybatis.spring.mapper.MapperFactoryBean"><property name="mapperInterface" value="com.icreate.dao.UserDao"></property><property name="sqlSessionFactory" ref="sqlSessionFactory"></property></bean><bean id="userService" class="com.icreate.service.impl.UserServiceImpl"><property name="userDao" ref="userDao"></property></bean></beans> |
<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">[/code] <context-param><param-name>contextConfigLocation</param-name><!-- applicationContext.xml文件在/WEB-INF/目錄下時可以這樣配置,--><param-value>classpath:applicationContext.xml</param-value></context-param><!-- 配置上下文监听 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app> |
ApplicationContext context = null;UserService userService = null;@Beforepublic void initContext(){this.context = new ClassPathXmlApplicationContext("applicationContext.xml");//this.context = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml");this.userService = (UserService) context.getBean("userService");} |
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