Spring整合Mybatis

一：添加jar包

mybatis:

mybatis-3.2.0.jar

                mybatis-spring-1.1.1.jar    //  整合spring的关键jar包

                log4j-1.2.17.jar

Spring: 

spring-aop-3.2.0.RELEASE.jar

                   spring-beans-3.2.0.RELEASE.jar

                   spring-context-3.2.0.RELEASE.jar

                   spring-core-3.2.0.RELEASE.jar

                   spring-expression-3.2.0.RELEASE.jar

                   spring-jdbc-3.2.0.RELEASE.jar

                   spring-test-3.2.4.RELEASE.jar

                   spring-tx-3.2.0.RELEASE.jar

  //spring 以来的jar包

                   aopalliance-1.0.jar

                   cglib-nodep-2.2.3.jar

                   commons-logging-1.1.1.jar

mysql驱动：

mysql-connector-java-5.0.4-bin.jar

二：创建实体类及数据库对应的表

 

public class User {

    private int id;
    private String name;
    private Date birthday;
    private double salary;

    //set,get方法
}

CREATE TABLE user(
    user_id INT AUTO_INCREMENT PRIMARY KEY,
    user_name VARCHAR(30),
    user_birthday DATE,
    user_salary DOUBLE
)

三：mapper接口及对应的映射文件

UserMapper接口实现基本的crud功能

import com.mybatis.beans.User;

public interface UserMapper {
    void save(User user);
    void update(User user);
    void delete(int id);
    User findById(int id);
    List<User> findAll();
}

对应实体类的userMapper.xml文件

<pre name="code" class="html"><?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">
<!-- namespace必须与接口的全类名一致-->
<mapper namespace="com.mybatis.mapper.UserMapper">
    <!-- id必须和mapper接口对应的功能名称一致 ，此处只写save功能 -->
    <insert id="save" parameterType="User">
        insert into user(name, birth, salary) values(#{name},#{birth},#{salary})
    </insert>
</mapper>

四:Spring的配置文件:beans.xml

<pre name="code" class="html"><pre name="code" class="html"><?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:aop="http://www.springframework.org/schema/aop"
    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.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <!-- mysql连接的基本配置，使用的是spring提供的 DriverManagerDataSource-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="username" value="root"></property>
        <property name="password" value="13177180723"></property>
        <property name="url" value="jdbc:mysql:///mybatis"></property>
    </bean>
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"></property>
        <!-- 别名包，等同于mybatis配置文件conf.xml中的typeAliases，简化映射文件.xml中类的引用 -->
        <property name="typeAliasesPackage" value="com.mybatis.beans"></property>
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- mapper接口扫描的包，即将此包下所有符合的mapper接口加载到SpringIOC容器管理 -->
        <property name="basePackage" value="com.mybatis.mapper"></property>
        <property name="sqlSessionFactory" ref="sqlSessionFactory"></property>
    </bean>
    <!-- 添加事务 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 启动事务 -->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

五:mybatis的配置文件:config.xml

<?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>
    <!-- Spring整合myBatis后，这个配置文件基本可以不要了-->
    <!-- 设置外部配置文件 -->
    <!-- 设置类别名 -->
    <!-- 设置数据库连接环境 -->
    <!-- 映射文件 -->
</configuration>

六：测试

<pre name="code" class="java">package com.mybatis.test;

import static org.junit.Assert.*;

import java.util.Date;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.mybatis.beans.User;
import com.mybatis.mapper.UserMapper;

@RunWith(SpringJUnit4ClassRunner.class) //启用spring的测试框架
@ContextConfiguration("/beans.xml") //加载spring配置文件
public class MbtSpTest {

    @Autowired  //自动注入mapper接口
    private UserMapper userMapper;

    @Test
    public void test() {
        User user = new User(-1, "Luxi", new Date(), 2000.00);
        userMapper.save(user);
    }

}