Spring集成Mybatis

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

public class User { private int id; private String name; private Date birthday; private double salary; //set,get方法 }

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

<?xml version="1.0" encoding="UTF⑻"?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis⑶-mapper.dtd"> <!-- UserMapper.java的文件名必须和userMapper.xml相同 namespace：必须与对应的接口全类名1致 id：必须与对应接口的某个方法名1致 --> <mapper namespace="com.atguigu.mybatis.test9.UserMapper"> <resultMap type="User" id="userResult"> <result column="user_id" property="id"/> <result column="user_name" property="name"/> <result column="user_birthday" property="birthday"/> <result column="user_salary" property="salary"/> </resultMap> <!-- 获得插入数据后的id --> <insert id="save" keyColumn="user_id" keyProperty="id" useGeneratedKeys="true"> insert into s_user(user_name,user_birthday,user_salary) values(#{name},#{birthday},#{salary}) </insert> <update id="update"> update s_user set user_name = #{name}, user_birthday = #{birthday}, user_salary = #{salary} where user_id = #{id} </update> <delete id="delete"> delete from s_user where user_id = #{id} </delete> <select id="findById" resultMap="userResult"> select * from s_user where user_id = #{id} </select> <select id="findAll" resultMap="userResult"> select * from s_user </select> </mapper>

<?xml version="1.0" encoding="UTF⑻"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" 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-beans⑶.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context⑶.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx⑶.2.xsd"> <!-- 1. 数据源 : DriverManagerDataSource --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/mybatis"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> <!-- 2. mybatis的SqlSession的工厂: SqlSessionFactoryBean dataSource / typeAliasesPackage --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> <property name="typeAliasesPackage" value="com.atuigu.spring_mybatis2.domain"/> </bean> <!-- 3. mybatis自动扫描加载Sql映照文件 : MapperScannerConfigurer sqlSessionFactory / basePackage --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.atuigu.spring_mybatis2.mapper"/> <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean> <!-- 4. 事务管理 : DataSourceTransactionManager --> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 5. 使用声明式事务 --> <tx:annotation-driven transaction-manager="txManager" /> </beans>

<?xml version="1.0" encoding="UTF⑻" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis⑶-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 --> <!-- 设置种别名 --> <!-- 设置数据库连接环境 --> <!-- 映照文件 --> </configuration>

@RunWith(SpringJUnit4ClassRunner.class) //使用Springtest测试框架 @ContextConfiguration("/beans.xml") //加载配置 public class SMTest { @Autowired //注入 private UserMapper userMapper; @Test public void save() { User user = new User(); user.setBirthday(new Date()); user.setName("marry"); user.setSalary(300); userMapper.save(user); System.out.println(user.getId()); } @Test public void update() { User user = userMapper.findById(2); user.setSalary(2000); userMapper.update(user); } @Test public void delete() { userMapper.delete(3); } @Test public void findById() { User user = userMapper.findById(1); System.out.println(user); } @Test public void findAll() { List<User> users = userMapper.findAll(); System.out.println(users); } }