spring4mvc整合mybatis3
1.pom.xml文件增加mybatis3的jar包如下，本人用的spring版本为4.1.6.RELEASE
!-- 添加mybatis的核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.8</version> </dependency> <!-- 添加mybatis与Spring整合的核心包 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency>
2.配置文件目录结构，有多少个业务在mapping下就有多少个配置，相应在dao下就有多少个映射类
在*ServiceImpl使用的时候根据需要@autowire不同的Mapper类即可，如下，
3.*ServiceImpl.java--T_USERServiceImpl.java
package com.zhxjz.service.t_user.impl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.zhxjz.dao.t_user.T_USERMapper;
import com.zhxjz.model.t_user.T_USER;
import com.zhxjz.service.t_user.T_USERService;
@Service("t_userService")
@Transactional
public class T_USERServiceImpl implements T_USERService {
@Autowired
private T_USERMapper t_userMapper;
@Override
public void addUser(T_USER user) {
t_userMapper.insert(user);
T_USER user1 = new T_USER();
user1.setUserId(user.getUserId());
user1.setUserName(user.getUserName());
user1.setUserSalary(user.getUserSalary());
user1.setUserBirthday(user1.getUserBirthday());
// t_userMapper.insert(user1);//这里是为了测试事务失败回滚而设计的
}
@Override
public T_USER getUserById(String userId) {
return t_userMapper.selectByPrimaryKey(userId);
}
}
关于事务处理：跟hibernate4一样，只需要在SpringDatasource.xml文件配置事务，spring能自动代理管理事务，发生事务失败则不会commit
4.*Dao.java--T_USERMapper.java（注：mybatis由于接口映射sql的机制，因此*DaoImpl已经不用写了，或者说已被mybatis框架实现了）
package com.zhxjz.dao.t_user;
import com.zhxjz.model.t_user.T_USER;
public interface T_USERMapper {
int deleteByPrimaryKey(String userId);
int insert(T_USER record);
int insertSelective(T_USER record);
T_USER selectByPrimaryKey(String userId);
int updateByPrimaryKeySelective(T_USER record);
int updateByPrimaryKey(T_USER record);
}
5.model类--T_USER.java
package com.zhxjz.model.t_user;
import java.util.Date;
public class T_USER {
private String userId;
private String userName;
private Date userBirthday;
private Double userSalary;
省略getter和setter。。。
}
6.SpringMybatis3.xml--spring管理mybatis核心配置
<?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:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <!-- 配置sqlSessionFactory --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="mapperLocations" value="classpath:mapping/*.xml" /> </bean> <!-- 配置扫描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描me.gacl.dao这个包以及它的子包下的所有映射接口类 --> <property name="basePackage" value="com.zhxjz.dao.t_user;" /> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /> </bean> </beans>
7.T_UserMapper.xml（sql-mapping映射文件配置）
<?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.zhxjz.dao.t_user.T_USERMapper">
<resultMap id="BaseResultMap" type="com.zhxjz.model.t_user.T_USER">
<id column="user_id" property="userId" jdbcType="CHAR" />
<result column="user_name" property="userName" jdbcType="VARCHAR" />
<result column="user_birthday" property="userBirthday"
jdbcType="DATE" />
<result column="user_salary" property="userSalary" jdbcType="DOUBLE" />
</resultMap>
<sql id="Base_Column_List">
user_id, user_name, user_birthday, user_salary
</sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap"
parameterType="java.lang.String">
select
<include refid="Base_Column_List" />
from t_user
where user_id = #{userId,jdbcType=CHAR}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.lang.String">
delete from t_user
where user_id = #{userId,jdbcType=CHAR}
</delete>
<insert id="insert" parameterType="com.zhxjz.model.t_user.T_USER">
insert into t_user (user_id, user_name, user_birthday,
user_salary)
values (#{userId,jdbcType=CHAR}, #{userName,jdbcType=VARCHAR},
#{userBirthday,jdbcType=DATE},
#{userSalary,jdbcType=DOUBLE})
</insert>
<insert id="insertSelective" parameterType="com.zhxjz.model.t_user.T_USER">
insert into t_user
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="userId != null">
user_id,
</if>
<if test="userName != null">
user_name,
</if>
<if test="userBirthday != null">
user_birthday,
</if>
<if test="userSalary != null">
user_salary,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="userId != null">
#{userId,jdbcType=CHAR},
</if>
<if test="userName != null">
#{userName,jdbcType=VARCHAR},
</if>
<if test="userBirthday != null">
#{userBirthday,jdbcType=DATE},
</if>
<if test="userSalary != null">
#{userSalary,jdbcType=DOUBLE},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="com.zhxjz.model.t_user.T_USER">
update t_user
<set>
<if test="userName != null">
user_name = #{userName,jdbcType=VARCHAR},
</if>
<if test="userBirthday != null">
user_birthday = #{userBirthday,jdbcType=DATE},
</if>
<if test="userSalary != null">
user_salary = #{userSalary,jdbcType=DOUBLE},
</if>
</set>
where user_id = #{userId,jdbcType=CHAR}
</update>
<update id="updateByPrimaryKey" parameterType="com.zhxjz.model.t_user.T_USER">
update t_user
set user_name = #{userName,jdbcType=VARCHAR},
user_birthday = #{userBirthday,jdbcType=DATE},
user_salary = #{userSalary,jdbcType=DOUBLE}
where user_id = #{userId,jdbcType=CHAR}
</update>
</mapper>
8.*Controller.java测试
package com.zhxjz.controller.t_user;
import java.util.Date;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import com.zhxjz.framework.model.json.JsonResult;
import com.zhxjz.model.t_user.T_USER;
import com.zhxjz.service.t_user.T_USERService;
@Controller
@RequestMapping("/t_user")
public class T_USERController {
@Autowired
T_USERService t_userService;
@RequestMapping("/getBean.do")
public String getBean(String id, ModelMap model) {
T_USER user = t_userService.getUserById(id);
String message = new JsonResult(user).toJson();
model.put("message", message);
return "message";
}
@RequestMapping("/add.do")
public String getBean(T_USER user, ModelMap model) {
user.setUserBirthday(new Date());
t_userService.addUser(user);
String message = new JsonResult().toJson();
model.put("message", message);
return "message";
}
}