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文章目录
Spring和MyBatis整合
1.pom.xml添加依赖
<!-- Spring依赖 -->
<!-- 1.Spring核心依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 2.Spring dao依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.3.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>5.0.4.RELEASE</version>
</dependency>
<!-- 3.Spring web依赖 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!-- 4.Spring test依赖：方便做单元测试和集成测试 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.7.RELEASE</version>
</dependency>
<!--mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<!--spring整合mybatis-->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.2</version>
</dependency>
2.添加jar包以及开启mysql服务
3.pom.xml中Build里添加(用来找到mapper.xml文件)
<resources>
<resource>
<directory>src/main/java</directory>
<includes>
<include>**/*.xml</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>
</build>
4.创建实体类（添加构造函数，getter，setter，toString方法）
5.创建Dao层以及其mapper实现类
UserDao.java:
public interface UserDao {
List<User> query();
void delete(int id);
}
UserDao.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">
<mapper namespace="com.zy100.dao.UserDao">
<select id="query" resultType="com.zy100.pojo.User">
select u_id id,username user_name,password from USER
</select>
<delete id="delete" parameterType="int">
delete from USER where id=#{u_id}
</delete>
</mapper>
6.创建Service.interface及其实现类UserServiceImpl
public interface UserService {
List<User> query();
void delete(int id);
}
@Service
public class UserServiceImpl implements UserService {
@Resource
private UserDao userDao;
@Override
public List<User> query() {
return this.userDao.query();
}
@Override
public void delete(int id){
userDao.delete(id);
}
}
7.添加resources文件
applicationContext.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!-- 约束文件 -->
<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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-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
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
">
<!-- spring配置 -->
<!-- 一个bean就是一个被spring容器管理的类 管理他的生命周期 IOC
class 就是被spring管理的类
id是bean的标志 id必须唯一 id的值一般情况下是类名的首字母小写 -->
<!--识别注释-->
<context:annotation-config></context:annotation-config>
<!--Spring配置-->
<context:component-scan base-package="com.zy100"></context:component-scan>
<aop:aspectj-autoproxy></aop:aspectj-autoproxy>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/user?serverTimezone=Asia/Shanghai&characterEncoding=UTF-8&useSSL=false"></property>
<property name="user" value="root"></property>
<property name="password" value="123456"></property>
</bean>
<!--在spring中配置sqlSessionfactoryBean-->
<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="mapperLocations" value="classpath:com/zy100/dao/*.xml"></property>
<property name="configLocation" value="classpath:mybatsi-cfg.xml"></property>
</bean>
<!--配置mapper-->
<bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.zy100.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sessionFactory"></property>
</bean>
<!--事务控制-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
</beans>
mydatis-cfg.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>
<!--启动二级缓存-->
<settings>
<setting name="cacheEnabled" value="true"/>
</settings>
<typeAliases>
<typeAlias type="com.zy100.pojo.User" alias="user"></typeAlias>
</typeAliases>
</configuration>
8.测试
public class App {
@Test
public void query() {
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
UserService userService = context.getBean("userServiceImpl",UserService.class);
List<User> list = userService.query();
if (list.size()!=0){
for (User user:list) {
System.out.println(user.toString());
}
}
}
}
run:
User{id=1, user_name='声音', password='123'}
User{id=2, user_name='adsa', password='asdas'}
User{id=3, user_name='sda', password='ada'}
User{id=4, user_name='11', password='11'}