Spring整合Mybatis框架小demo
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spring框架整合mybatis框架，关键的注释已经写道代码中了
这个小项目的整体结构图：
mybatis-config.xml配置文件：
spring框架的核心配置文件：applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:p="http://www.springframework.org/schema/p"
5 xmlns:aop="http://www.springframework.org/schema/aop"
6 xmlns:tx="http://www.springframework.org/schema/tx"
7 xmlns:context="http://www.springframework.org/schema/context"
8 xsi:schemaLocation="http://www.springframework.org/schema/beans
9 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
10 http://www.springframework.org/schema/aop
11 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
12 http://www.springframework.org/schema/tx
13 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
14 http://www.springframework.org/schema/context
15 http://www.springframework.org/schema/context/spring-context-3.2.xsd ">
16
17 <!--配置数据源 -->
18 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
19 <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
20 <property name="url"
21 value="jdbc:mysql://localhost:3306/smbms?useUnicode=true&characterEncoding=utf-8"></property>
22 <property name="username" value="root"></property>
23 <property name="password" value="root"></property>
24
25 </bean>
26 <!--配置SqlSessionFactoryBean -->
27 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
28 <!--获取到你的数据源 -->
29 <property name="dataSource" ref="dataSource"></property>
30 <!--获取到mybatis的配置文件 注意这里使用的是value属性 -->
31 <property name="configLocation" value="classpath:mybatis-config.xml"></property>
32 <!--使用下面这种方式获取sql文件 -->
33 <property name="mapperLocations">
34 <list>
35 <value>classpath:cn/smbms/dao/**/*.xml</value>
36 </list>
37 </property>
38 </bean>
39
40 <!--配置 SqlSessionTemplate 用它来执行数据库的各种操作 -->
41 <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
42 <!--操作数据库的时候，引用数据库的连接 通过这个SqlSessionTemplate类的构造方法-->
43 <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
44 </bean>
45
46 <!--配置dao -->
47 <bean id="userMapper" class="cn.smbms.dao.user.UserMapperImpl">
48 <property name="sqlSession" ref="sqlSessionTemplate"></property>
49 </bean>
50
51 </beans>
public interface UserMapper {
/**
* 查询用户列表(参数：对象入参)
* @return
*/
public List<User> getUserList(User user);
}
UserMapperImpl.java
1 package cn.smbms.dao.user;
2
3 import java.util.ArrayList;
4 import java.util.List;
5 import java.util.Map;
6
7 import org.apache.ibatis.session.SqlSession;
8 import org.mybatis.spring.SqlSessionTemplate;
9 import org.mybatis.spring.support.SqlSessionDaoSupport;
10
11 import cn.smbms.pojo.User;
12 import cn.smbms.utils.MyBatisUtil;
13
14 public class UserMapperImpl implements UserMapper{
15
16 private SqlSessionTemplate sqlSession;
17
18 public SqlSessionTemplate getSqlSession() {
19 return sqlSession;
20 }
21
22 public void setSqlSession(SqlSessionTemplate sqlSession) {
23 this.sqlSession = sqlSession;
24 }
25 //根据用户姓名和用户角色id查看用户列表信息
26 public List<User> getUserList(User user) {
27
31 //使用SqlSessionTemplate
32 return sqlSession.selectList("cn.smbms.dao.user.UserMapper.getUserList", user);
33
34
35 }
36
37
38
39 }
UserMapper.xml
1 <?xml version="1.0" encoding="UTF-8" ?>
2 <!DOCTYPE mapper
3 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
4 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
5
6 <mapper namespace="cn.smbms.dao.user.UserMapper">
7 <!-- 当数据库中的字段信息与对象的属性不一致时需要通过resultMap来映射 -->
8 <resultMap type="User" id="userList">
9 <result property="id" column="id"/>
10 <result property="userCode" column="userCode"/>
11 <result property="userName" column="userName"/>
12 <result property="phone" column="phone"/>
13 <result property="birthday" column="birthday"/>
14 <result property="gender" column="gender"/>
15 <result property="userRole" column="userRole"/>
16 <result property="userRoleName" column="roleName"/>
17 </resultMap>
18
19
20 <!-- 查询用户列表(参数：对象入参) -->
21 <select id="getUserList" resultMap="userList" parameterType="User">
22 select u.*,r.roleName from smbms_user u,smbms_role r
23 where u.userName like CONCAT (‘%‘,#{userName},‘%‘)
24 and u.userRole = #{userRole} and u.userRole = r.id
25 </select>
26 </mapper>
编写测试方法：
1 @Test
2 public void testGetUserList(){
3
4 User userCondition = new User();
5 userCondition.setUserName("赵");
6 userCondition.setUserRole(3);
7 //UserMapper userMapper=new UserMapperImpl();
8 ApplicationContext ctx=new
9 ClassPathXmlApplicationContext("applicationContext.xml");
10
11 UserMapper userMapper=(UserMapper) ctx.getBean("userMapper");
12
13
14 List<User> userList = userMapper.getUserList(userCondition);
15
16 for(User user: userList){
17 logger.debug("testGetUserList userCode: " + user.getUserCode() +
18 " and userName: " + user.getUserName() +
19 " and userRole: " + user.getUserRole() +
20 " and userRoleName: " + user.getUserRoleName() +
21 " and age: " + user.getAge() +
22 " and address: " + user.getAddress());
23 }
24 }
25
运行结果：
其实上面的UserMapperImpl.java类中的一部分代码还是能够进行优化的。
applicationContext.xml核心配置文件也需要进行相应的修改：
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:p="http://www.springframework.org/schema/p"
5 xmlns:aop="http://www.springframework.org/schema/aop"
6 xmlns:tx="http://www.springframework.org/schema/tx"
7 xmlns:context="http://www.springframework.org/schema/context"
8 xsi:schemaLocation="http://www.springframework.org/schema/beans
9 http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
10 http://www.springframework.org/schema/aop
11 http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
12 http://www.springframework.org/schema/tx
13 http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
14 http://www.springframework.org/schema/context
15 http://www.springframework.org/schema/context/spring-context-3.2.xsd ">
16
17 <!--配置数据源 -->
18 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
19 <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
20 <property name="url"
21 value="jdbc:mysql://localhost:3306/smbms?useUnicode=true&characterEncoding=utf-8"></property>
22 <property name="username" value="root"></property>
23 <property name="password" value="root"></property>
24
25 </bean>
26 <!--配置SqlSessionFactoryBean -->
27 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
28 <!--获取到你的数据源 -->
29 <property name="dataSource" ref="dataSource"></property>
30 <!--获取到mybatis的配置文件 注意这里使用的是value属性 -->
31 <property name="configLocation" value="classpath:mybatis-config.xml"></property>
32 <!--使用下面这种方式获取sql文件 -->
33 <property name="mapperLocations">
34 <list>
35 <value>classpath:cn/smbms/dao/**/*.xml</value>
36 </list>
37 </property>
38 </bean>
39
40 <!--配置 SqlSessionTemplate 用它来执行数据库的各种操作 使用继承SqlSessionDaoSupport方式的话，就不用获取SqlSessionTemplate类了-->
41 <!-- <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
42 操作数据库的时候，引用数据库的连接 通过这个SqlSessionTemplate类的构造方法
43 <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
44 </bean> -->
45
46 <!--配置dao -->
47 <bean id="userMapper" class="cn.smbms.dao.user.UserMapperImpl">
48 <!-- 使用继承SqlSessionDaoSupport方式的话，就不用获取SqlSessionTemplate类了 -->
49 <!-- <property name="sqlSession" ref="sqlSessionTemplate"></property> -->
50 <!--但是这时候工程的获取是有必要的了 注意：name="SqlSessionFactory" 首字母大写还是小写这都是可以的 -->
51 <property name="SqlSessionFactory" ref="sqlSessionFactory"></property>
52 </bean>
53
54 </beans>
运行结果：
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