Spring与MyBatis整合

1. 整合需引入jar包

mybatis-3.1.1.jar

mybatis-spring-1.1.1.jar


2 四种整合方式

2.1 采用MapperScannerConfigurer,它将会查找类路径下的映射器并自动将它们创建成MapperFactoryBean。
applicationContext.xml

<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <!--上面的xsd最好和当前使用的Spring版本号一致,如果换了Spring版本,这个最好也跟着改-->

    <!-- 引入属性文件 放在最开头,在使用spring之前就引入,里面的变量才能被引用-->
    <context:property-placeholder location="classpath*:*.properties"/>
    <!--
    引入属性文件也可以用这种写法
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:config.properties" />
    </bean>
    -->

    <!-- 自动扫描(需要自动注入的类,对于那些类上有注解:@Repository、@Service、@Controller、@Component都进行注入) -->
    <!--因为 Spring MVC 是 Spring 的子容器,所以我们在 Spring MVC 的配置中再指定扫描 Controller 的注解,这里是父容器的配置地方-->
    <!--注解注入的相关材料可以看:-->
    <!--http://blog.csdn.net/u012763117/article/details/17253849-->
    <!--http://casheen.iteye.com/blog/295348-->
    <!--http://blog.csdn.net/zhang854429783/article/details/6785574-->
    <context:component-scan base-package="com.dhm">
        <context:exclude-filter type="regex" expression=".*\.controller\..*" />
    </context:component-scan>


    <!-- 声明式事务相关配置-->
    <tx:annotation-driven transaction-manager="txManager"/>

    <!-- mysql -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" lazy-init="true">
        <property name="url">
            <value>jdbc:mysql://localhost:3306/test</value>
        </property>
        <property name="username">
            <value>root</value>
        </property>
        <property name="password">
            <value>root</value>
        </property>
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
    </bean>

    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!-- spring和MyBatis整合,不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描 mapper.xml文件(读取的是编译出来的classes目录下的module目录下的具体模块的mapping目录下的任意xml文件) -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
        <!--最新mybatis的配置文件位置-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

    <!-- mapper 接口所在包名,Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.dhm.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
</beans>

 

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" >

<!-- 为这个mapper指定一个唯一的namespace,namespace的值习惯上设置成包名+sql映射文件名,这样就能够保证namespace的值是唯一的
例如namespace="me.gacl.mapping.userMapper"就是me.gacl.mapping(包名)+userMapper(userMapper.xml文件去除后缀) -->
<mapper namespace="com.dhm.mapper.UserMapper" >
  <!--在select标签中编写查询的SQL语句, parameterType为String类型单个参数,mybatis对应的内置对象_parameter -->
  <select id="getUserByUserId" parameterType="java.lang.String" resultType="java.util.HashMap">
    select user_name,dept_id,is_valid from user where
    <if test="_parameter != null">
       user_id=${_parameter}
    </if>
  </select>
</mapper>
UserMapper(相当于dao类)
package com.dhm.mapper;

import java.util.Map;

/**
 * MapperScanner扫描到后会自动生成代理对象。
 * 注意,接口中的方法名称要和对应的MyBatis映射文件中的语句的id值一样,因为生成的
 * 动态代理,会根据这个匹配相应的Sql语句执行。另外就是方法的参数和返回值也需要注
 * 意,接口中的方法如何定义,对应的MyBatis映射文件就应该进行相应的定义。
 */
public interface UserMapper {
    Map getUserByUserId(String id);
}

service类

package com.dhm.service.impl;

import com.dhm.mapper.UserMapper;
import com.dhm.service.UserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {

    @Resource
    private UserMapper userMapper;

    public Map getUserByUserId(String id) {
        return userMapper.getUserByUserId(id);
    }
}

 

2.2 采用接口org.apache.ibatis.session.SqlSession的实现类org.mybatis.spring.SqlSessionTemplate。mybatis中, sessionFactory可由SqlSessionFactoryBuilder.来创建。MyBatis-Spring 中,使用了SqlSessionFactoryBean来替代。SqlSessionFactoryBean有一个必须属性dataSource,另外其还有一个通用属性configLocation(用来指定mybatis的xml配置文件路径)。

applicationContext.xml

<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <!--上面的xsd最好和当前使用的Spring版本号一致,如果换了Spring版本,这个最好也跟着改-->

    <!-- 引入属性文件 放在最开头,在使用spring之前就引入,里面的变量才能被引用-->
    <context:property-placeholder location="classpath*:*.properties"/>
    <!--
    引入属性文件也可以用这种写法
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:config.properties" />
    </bean>
    -->

    <!-- 自动扫描(需要自动注入的类,对于那些类上有注解:@Repository、@Service、@Controller、@Component都进行注入) -->
    <!--因为 Spring MVC 是 Spring 的子容器,所以我们在 Spring MVC 的配置中再指定扫描 Controller 的注解,这里是父容器的配置地方-->
    <!--注解注入的相关材料可以看:-->
    <!--http://blog.csdn.net/u012763117/article/details/17253849-->
    <!--http://casheen.iteye.com/blog/295348-->
    <!--http://blog.csdn.net/zhang854429783/article/details/6785574-->
    <context:component-scan base-package="com.dhm">
        <context:exclude-filter type="regex" expression=".*\.controller\..*" />
    </context:component-scan>


    <!-- 声明式事务相关配置-->
    <tx:annotation-driven transaction-manager="txManager"/>

    <!-- mysql -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" lazy-init="true">
        <property name="url">
            <value>jdbc:mysql://localhost:3306/test</value>
        </property>
        <property name="username">
            <value>root</value>
        </property>
        <property name="password">
            <value>root</value>
        </property>
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
    </bean>

    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!-- spring和MyBatis整合,不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描 dao.xml文件(读取的是编译出来的classes目录下的module目录下的具体模块的mapping目录下的任意xml文件) -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
        <!--最新mybatis的配置文件位置-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

    <!-- mybatis spring sqlSessionTemplate,使用时直接让spring注入即可 -->
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg index="0" ref="sqlSessionFactory"></constructor-arg>
    </bean>
</beans>
UserDao.java
package com.dhm.dao;

import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;
import java.util.Map;

@Repository
public class UserDao {

    @Resource
    private SqlSessionTemplate sqlSessionTemplate;

    public Map getUserByUserId(String id) {
        return sqlSessionTemplate.selectOne("getUserByUserId", id);
    }
}

service类

package com.dhm.service.impl;

import com.dhm.dao.UserDao;
import com.dhm.service.UserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {

    @Resource
    private UserDao userMapper;

    public Map getUserByUserId(String id) {
        return userMapper.getUserByUserId(id);
    }
}

 

2.3 采用抽象类org.mybatis.spring.support.SqlSessionDaoSupport提供SqlSession。

applicationContext.xml

<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <!--上面的xsd最好和当前使用的Spring版本号一致,如果换了Spring版本,这个最好也跟着改-->

    <!-- 引入属性文件 放在最开头,在使用spring之前就引入,里面的变量才能被引用-->
    <context:property-placeholder location="classpath*:*.properties"/>
    <!--
    引入属性文件也可以用这种写法
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:config.properties" />
    </bean>
    -->

    <!-- 自动扫描(需要自动注入的类,对于那些类上有注解:@Repository、@Service、@Controller、@Component都进行注入) -->
    <!--因为 Spring MVC 是 Spring 的子容器,所以我们在 Spring MVC 的配置中再指定扫描 Controller 的注解,这里是父容器的配置地方-->
    <!--注解注入的相关材料可以看:-->
    <!--http://blog.csdn.net/u012763117/article/details/17253849-->
    <!--http://casheen.iteye.com/blog/295348-->
    <!--http://blog.csdn.net/zhang854429783/article/details/6785574-->
    <context:component-scan base-package="com.dhm">
        <context:exclude-filter type="regex" expression=".*\.controller\..*" />
    </context:component-scan>


    <!-- 声明式事务相关配置-->
    <tx:annotation-driven transaction-manager="txManager"/>

    <!-- mysql -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" lazy-init="true">
        <property name="url">
            <value>jdbc:mysql://localhost:3306/test</value>
        </property>
        <property name="username">
            <value>root</value>
        </property>
        <property name="password">
            <value>root</value>
        </property>
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
    </bean>

    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!-- spring和MyBatis整合,不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描 dao.xml文件(读取的是编译出来的classes目录下的module目录下的具体模块的mapping目录下的任意xml文件) -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
        <!--最新mybatis的配置文件位置-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>
</beans>

userDao.java

package com.dhm.dao;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;
import java.util.Map;

@Repository
public class UserDao extends SqlSessionDaoSupport {

    /**使用SqlSessionDaoSupport必须注意,此处源码1.1.1中有自动注入,1.2中取消了自动注入,需要手工注入,侵入性强
     也可在spring-mybatis.xml中如下配置,但是这种有多少个dao就要配置到少个,多个dao就很麻烦。
        <bean id="userDao" class="com.hua.saf.dao.UserDao">
             <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
        </bean>
     */

    @Resource
    public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {
        super.setSqlSessionFactory(sqlSessionFactory);
    }

    public Map getUserByUserId(String id) {
        return getSqlSession().selectOne("getUserByUserId", id);
    }
}

 

2.4 单个的MapperFactoryBean,一个mapper对应一个MapperFactoryBean对象

applicationContext.xml

<?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:context="http://www.springframework.org/schema/context"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

    <!--上面的xsd最好和当前使用的Spring版本号一致,如果换了Spring版本,这个最好也跟着改-->

    <!-- 引入属性文件 放在最开头,在使用spring之前就引入,里面的变量才能被引用-->
    <context:property-placeholder location="classpath*:*.properties"/>
    <!--
    引入属性文件也可以用这种写法
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="location" value="classpath:config.properties" />
    </bean>
    -->

    <!-- 自动扫描(需要自动注入的类,对于那些类上有注解:@Repository、@Service、@Controller、@Component都进行注入) -->
    <!--因为 Spring MVC 是 Spring 的子容器,所以我们在 Spring MVC 的配置中再指定扫描 Controller 的注解,这里是父容器的配置地方-->
    <!--注解注入的相关材料可以看:-->
    <!--http://blog.csdn.net/u012763117/article/details/17253849-->
    <!--http://casheen.iteye.com/blog/295348-->
    <!--http://blog.csdn.net/zhang854429783/article/details/6785574-->
    <context:component-scan base-package="com.dhm">
        <context:exclude-filter type="regex" expression=".*\.controller\..*" />
    </context:component-scan>


    <!-- 声明式事务相关配置-->
    <tx:annotation-driven transaction-manager="txManager"/>

    <!-- mysql -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" lazy-init="true">
        <property name="url">
            <value>jdbc:mysql://localhost:3306/test</value>
        </property>
        <property name="username">
            <value>root</value>
        </property>
        <property name="password">
            <value>root</value>
        </property>
        <property name="driverClassName">
            <value>com.mysql.jdbc.Driver</value>
        </property>
    </bean>

    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!-- spring和MyBatis整合,不需要mybatis的配置映射文件 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描 mapper.xml文件(读取的是编译出来的classes目录下的module目录下的具体模块的mapping目录下的任意xml文件) -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
        <!--最新mybatis的配置文件位置-->
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

    <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
        <property name="mapperInterface" value="com.dhm.mapper.UserMapper"></property>
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>
</beans>

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" >

<!-- 为这个mapper指定一个唯一的namespace,namespace的值习惯上设置成包名+sql映射文件名,这样就能够保证namespace的值是唯一的
例如namespace="me.gacl.mapping.userMapper"就是me.gacl.mapping(包名)+userMapper(userMapper.xml文件去除后缀)
-->
<mapper namespace="com.dhm.mapper.UserMapper" >
  <!--
  在select标签中编写查询的SQL语句, parameterType为String类型单个参数,mybatis对应的内置对象_parameter
  -->
  <select id="getUserByUserId" parameterType="java.lang.String" resultType="java.util.HashMap">
    select user_name,dept_id,is_valid from user where
    <if test="_parameter != null">
       user_id=${_parameter}
    </if>
  </select>
</mapper>

UserMapper.java

package com.dhm.mapper;

import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.support.SqlSessionDaoSupport;
import org.springframework.stereotype.Repository;

import javax.annotation.Resource;
import java.util.Map;

public interface UserMapper {
    Map getUserByUserId(String id);
}

service类

package com.dhm.service.impl;

import com.dhm.mapper.UserMapper;
import com.dhm.service.UserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Map;

@Service
public class UserServiceImpl implements UserService {

    @Resource
    private UserMapper userMapper;

    public Map getUserByUserId(String id) {
        return userMapper.getUserByUserId(id);
    }
}

 

 

参考:http://www.cnblogs.com/wangmingshun/p/5674633.html

          http://blog.csdn.net/paincupid/article/details/48754347

posted @ 2017-10-02 22:50  舟舟舟舟舟  阅读(288)  评论(0编辑  收藏  举报