您的位置：首页 > 编程语言 > Java开发

初学者总结：spring整合mybatis

2018-02-21 13:16 369 查看

Spring整合Mybatis:
1、创建java工程：
2、添加jar包：

3、在工程上点击右键创建 source Folder

4、创建实体类、创建映射文件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="dao.UserInfoMapper">
<resultMap type="entity.UserInfo" id="userInfoResult">
<id column="id" property="id" />
<result property="name" column="name" />
<result property="password" column="password" />
</resultMap>
<select id="login" parameterType="entity.UserInfo" resultMap="userInfoResult">
select * from userInfo where name=#{name} and password=#{password}
</select>
</mapper>

5、创建mybatis配置文件：

<?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>

<properties resource="db.properties">
</properties>

<typeAliases>
<typeAlias type="entity.UserInfo" alias="UserInfo"/>
</typeAliases>

<mappers>

<pakage name="dao" />
</mappers>
</configuration>

6、创建service包->>定义接口->>创建service.impl->>实现方法

package service.impl;

import dao.UserInfoMapper;
import entity.UserInfo;
import service.UserInfoService;

public class UserInfoServiceImpl implements UserInfoService {
UserInfoMapper mapper;

public UserInfoMapper getMapper() {
return mapper;
}

public void setMapper(UserInfoMapper mapper) {
this.mapper = mapper;
}

@Override
public UserInfo login(UserInfo userInfo) {
return mapper.login(userInfo);
}

}

7、创建属性文件：

driver=oracle.jdbc.OracleDriver
url=jdbc:oracle:thin:@localhost:1521:orcl
username=test2
password=123456

8、创建spring配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd"> 

<bean  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations" value="classpath:db.properties" />
    </bean>

<bean id="dataSource" destroy-method="close"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="${driver}" />
<property name="jdbcUrl" value="${url}" />
<property name="user" value="${username}" />
<property name="password" value="${password}" />
<property name="maxPoolSize" value="40" />
<property name="minPoolSize" value="1" />

<property name="initialPoolSize" value="1" />

<property name="maxIdleTime" value="60" />

<property name="checkoutTimeout" value="2000" />
</bean>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
</bean>

<bean id="userInfoMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="mapperInterface" value="dao.UserInfoMapper"/>
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
</bean>

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

<tx:advice id="txAdvice" transaction-manager="trancManager">
<tx:attributes>
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="query" propagation="SUPPORTS" read-only="true"/>
<tx:method name="select" propagation="SUPPORTS" read-only="true"/>
<tx:method name="login" propagation="SUPPORTS" read-only="true"/>
</tx:attributes>
</tx:advice>

   
<aop:config>
<aop:pointcut expression="execution(* service.*.*(..))" id="pointCut"/>
   

<aop:advisor advice-ref="txAdvice" pointcut-ref="pointCut"/>
</aop:config>

<bean id="service" class="service.impl.UserInfoServiceImpl">
<property name="mapper" ref="userInfoMapper"/>
</bean>
</beans>

扩展：
（1）（红色的：Spring配置-实现类）
使用MapperFactoryBean，将数据映射接口转为Spring Bean
   <bean id="empMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
       <property name="mapperInterface" value="dao.EmpMapper"/>
       <property name="sqlSessionFactory" ref="sqlSessionFactory"/>
    </bean>
MapperScannerConfigurer简化配置，省略dao实现类
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="sqlSessionFactory" ref="sqlSessionFactory"/>
<property name="basePackage" value="dao"/>
</bean>
上面两种方式使用一种就可以省略dao实现类
（2）黑色的，配置事务管理器

<tx:annotation-driven  transaction-manager="transactionManager" />
在需要加入事务的方法或者类上添加@Transactiona
事务的传播性：@Transactional(propagation=Propagation.REQUIRED)
事务的超时性：@Transactional(timeout=30) //默认是30秒
事务的隔离级别：@Transactional(isolation = Isolation. READ_COMMITTED)
指定单一异常类：@Transactional(rollbackFor=RuntimeException.class)
指定多个异常类：@Transactional(rollbackFor={RuntimeException.class, Exception.class})
只读：@Transactional(readOnly=true)

9、测试：

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import entity.UserInfo;
import service.UserInfoService;

public class TestSpring {
@Test
public void test1() {
ApplicationContext context =
new ClassPathXmlApplicationContext("applicationContext.xml");
UserInfoService service = (UserInfoService) context.getBean("service");
UserInfo userInfo = new UserInfo("Tom", "123456");
if(service.login(userInfo ) == null) {
System.out.println("fail");
}else {
System.out.println("succ");
}
}

}

内容来自用户分享和网络整理，不保证内容的准确性，如有侵权内容，可联系管理员处理

标签： spring mybatis

相关文章推荐

新的分享

章节导航