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Spring学习笔记：Spring整合Mybatis（mybatis-spring.jar）（二：mybatis整合spring）

發布時間：2025/5/22 javascript 12 豆豆

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http://blog.csdn.net/qq598535550/article/details/51703190

二、Spring整合mybatis其實是在mybatis的基礎上實現Spring框架

　　　　1、依賴的jar包，maven引入依賴：

<dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.3</version><scope>test</scope></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.2.2</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.43</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>4.2.3.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.2.0.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.2.2.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-expression</artifactId><version>4.2.2.RELEASE</version></dependency><dependency><groupId> org.aspectj</groupId ><artifactId> aspectjweaver</artifactId ><version> 1.8.7</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>4.2.0.RELEASE</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.0.18</version></dependency><dependency><groupId>commons-dbcp</groupId><artifactId>commons-dbcp</artifactId><version>1.4</version></dependency><dependency><groupId>com.mchange</groupId><artifactId>c3p0</artifactId><version>0.9.5.2</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.0</version></dependency>

　　簡化依賴：webmvc

　　Spring整合Myabtis依賴的：

<dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.0</version></dependency>

　　2、編寫核心配置文件（mybatis的許多功能都可以使用Spring來完成）

　　mybatis-config.xml的很多功能可以移除

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">  <configuration><typeAliases><package name="cn.tengyu.entity"/></typeAliases><mappers><package name="cn.tengyu.dao"/></mappers> </configuration>

　　mapper.xml不用修改

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE mapperPUBLIC "-//mybatis.org//DTD Mapper 3.0//EN""http://mybatis.org/dtd/mybatis-3-mapper.dtd"> <mapper namespace="cn.tengyu.dao.EmpMapper"><cache eviction="FIFO" flushInterval="60000" size="512" readOnly="true"/><select id="count" resultType="int">SELECT count(1) AS count FROM emp</select><select id="findAll" resultType="Emp">SELECT <include refid="empColumn"/> FROM emp</select><sql id="empColumn">empno,empname,deptno</sql><resultMap id="EmpResult" type="Emp"><id property="empno" column="empno"/><result property="empname" column="empname"/><association property="dept" javaType="Dept"><id property="deptno" column="deptno"/><result property="deptname" column="deptname"/></association></resultMap><select id="findByIndex" resultMap="EmpResult">SELECT e.empno,e.empname,d.deptno,d.deptname FROM emp AS e,dept AS d WHERE e.deptno=d.deptno LIMIT #{startIndex},#{endIndex}</select> </mapper> View Code

　　applicationContext.xml添加功能，即Spring接管mybatis里面的SqlSessionFactory等Bean的實現

<?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:p="http://www.springframework.org/schema/p"xmlns:tx="http://www.springframework.org/schema/tx"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx.xsd"><bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"><property name="location" value="database.properties"/></bean><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="${jdbc.driver}"/><property name="jdbcUrl" value="${jdbc.url}"/><property name="user" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></bean><bean class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"/><property name="configLocation" value="classpath:mybatis-config2.xml"/></bean><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="cn.tengyu.dao"/></bean><bean id="deptService" class="cn.tengyu.service.impl.DeptServiceImpl"><property name="dao" ref="deptMapper"/></bean><bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource"/></bean> </beans>

　　　　3、service的實現依然使用私有接口屬性

?　　4.數據源可以靈活使用

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"><property name="location" value="database.properties"/></bean><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"><property name="driverClass" value="${jdbc.driver}"/><property name="jdbcUrl" value="${jdbc.url}"/><property name="user" value="${jdbc.username}"/><property name="password" value="${jdbc.password}"/></bean> View Code

　　5.mapper的使用很簡單

<bean class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource"/><property name="configLocation" value="classpath:mybatis-config2.xml"/></bean><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="basePackage" value="cn.tengyu.dao"/></bean><bean id="deptService" class="cn.tengyu.service.impl.DeptServiceImpl"><property name="dao" ref="deptMapper"/></bean>

　　測試：

@Testpublic void findAll(){ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");IDeptService deptService = (IDeptService) context.getBean("deptService");List<Dept> list = deptService.findAll();for (Dept o :list) {logger.debug(o.getDeptno()+"\t"+o.getDeptname());}}@Testpublic void Test02(){ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");IDeptService deptService = (IDeptService) context.getBean("deptService");Dept dept = new Dept();dept.setDeptname("測試部");int i = deptService.addDept(dept);logger.debug("執行"+i+"條數據！");}

注：另外需要靈活使用Spring的AOP進行事務控制

轉載于:https://www.cnblogs.com/tengqiuyu/p/7704824.html

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