1.实体bean
package org.hyn.bean;
public class User { private int id; private String name; private int age; ...//长长的set get 方法}
2.Mapper及配置文件
package org.hyn.maper;
import org.hyn.bean.User; public interface UserMapper { public void insertUser(User user); public User getUser(String name); }<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" ""> <mapper namespace="org.hyn.maper.UserMapper"> <insert id="insertUser" parameterType="org.hyn.bean.User"> insert into user(name,age) values(#{name},#{age}) </insert> <select id="getUser" resultType="org.hyn.bean.User" parameterType="java.lang.String"> select * from user where name=#{name} </select> <!-- 当使用该Mybatis与Spring整合的时候,该文件必须和相应的Mapper接口文件同名,并在同一路径下 --> </mapper>3.spring配置文件
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="myDataSource" /> <!-- <property name="configLocation" value=""/> --> <!-- 该属性用来指定MyBatis的XML配置文件路径,跟Spring整合时,编写MyBatis映射文件的目的无非是配置一下typeAlias、setting之类的 元素。不用在其中指定数据源,或者事务处理方式。就算配置了也会被忽略。因为这些都是使用Spring中的配置 。当然如果你不打算添加typeAlias 之类的设置的话,你连MyBatis的配置文件都不用写,更不用配置这个属性了 --> <!--<property name="mapperLocations" value="src/UserMapper.xml"/>--> <!-- 该配置文件用来指定Mapper映射文件的位置 ,如果映射文件与相应的接口同名,且在同一路径下,那么可以不配置该选项--> </bean> <!-- 注册Mapper方式一 <bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterface" value="org.hyn.maper.UserMapper"/> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean> --> <!-- 注册Mapper方式二:也可不指定特定mapper,而使用自动扫描包的方式来注册各种Mapper ,配置如下:--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="org.hyn.maper" /> </bean>4.测试类
@Test
public void testGetUser() { ApplicationContext aContext = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml"); UserMapper userMapper = aContext.getBean(UserMapper.class); User user = userMapper.getUser("张三"); System.out.println(user.toString()); } @Test public void testAddUser(){ ApplicationContext aContext = new FileSystemXmlApplicationContext("WebRoot/WEB-INF/applicationContext.xml"); UserMapper userMapper = aContext.getBean(UserMapper.class); User user = new User(); user.setName("张三"); user.setAge(18); userMapper.insertUser(user); System.out.println("添加成功"); }