Mybatis第五篇【Mybatis与Spring整合】
既然我们已经学了Mybatis的基本开发了，接下来就是Mybatis与Spring的整合了！
以下使用的是Oracle数据库来进行测试
导入jar包
- aopalliance.jar
- asm-3.3.1.jar
- aspectjweaver.jar
- c3p0-0.9.1.2.jar
- cglib-2.2.2.jar
- commons-logging.jar
- log4j-1.2.16.jar
- mybatis-3.1.1.jar
- mybatis-spring-1.1.1.jar
- mysql-connector-java-5.1.7-bin.jar
- ojdbc5.jar
- org.springframework.aop-3.0.5.RELEASE.jar
- org.springframework.asm-3.0.5.RELEASE.jar
- org.springframework.beans-3.0.5.RELEASE.jar
- org.springframework.context-3.0.5.RELEASE.jar
- org.springframework.core-3.0.5.RELEASE.jar
- org.springframework.expression-3.0.5.RELEASE.jar
- org.springframework.jdbc-3.0.5.RELEASE.jar
- org.springframework.orm-3.0.5.RELEASE.jar
- org.springframework.transaction-3.0.5.RELEASE.jar
- org.springframework.web.servlet-3.0.5.RELEASE.jar
- org.springframework.web-3.0.5.RELEASE.jar
创建表
create table emps( eid number(5) primary key, ename varchar2(20), esal number(8,2), esex varchar2(2) );
创建实体
package entity; /** * 员工 * @author AdminTC */ public class Emp { private Integer id; private String name; private Double sal; private String sex; public Emp(){} public Emp(Integer id, String name, Double sal, String sex) { this.id = id; this.name = name; this.sal = sal; this.sex = sex; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Double getSal() { return sal; } public void setSal(Double sal) { this.sal = sal; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } }
创建实体与表的映射文件
<?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="empNamespace"> <resultMap type="entity.Emp" id="empMap"> <id property="id" column="eid"/> <result property="name" column="ename"/> <result property="sal" column="esal"/> <result property="sex" column="esex"/> </resultMap> <!-- 增加员工 --> <insert id="add" parameterType="entity.Emp"> insert into emps(eid,ename,esal,esex) values(#{id},#{name},#{sal},#{sex}) </insert> </mapper>
创建Mybatis映射文件配置环境
数据库的信息交由Spring管理！Mybatis配置文件负责加载对应映射文件即可
<mappers> <mapper resource="zhongfucheng/entity/EmpMapper.xml"/> </mappers> </configuration>
配置Spring核心过滤器【也是加载总配置文件】
<!-- 核心springmvc核心控制器 --> <servlet> <servlet-name>DispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>DispatcherServlet</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping>
配置数据库信息、事务
<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.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"> <!-- 配置C3P0连接池,目的：管理数据库连接 --> <bean id="comboPooledDataSourceID" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="oracle.jdbc.driver.OracleDriver"/> <property name="jdbcUrl" value="jdbc:oracle:thin:@127.0.0.1:1521:ZHONGFUCHENG"/> <property name="user" value="scott"/> <property name="password" value="tiger"/> </bean> <!-- 配置SqlSessionFactoryBean，目的：加载mybaits配置文件和映射文件，即替代原Mybatis工具类的作用 --> <bean id="sqlSessionFactoryBeanID" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis.xml"/> <property name="dataSource" ref="comboPooledDataSourceID"/> </bean> <!-- 配置Mybatis的事务管理器，即因为Mybatis底层用的是JDBC事务管事器，所以在这里依然配置JDBC事务管理器 --> <bean id="dataSourceTransactionManagerID" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="comboPooledDataSourceID"/> </bean> <!-- 配置事务通知，即让哪些方法需要事务支持 --> <tx:advice id="tx" transaction-manager="dataSourceTransactionManagerID"> <tx:attributes> <tx:method name="*" propagation="REQUIRED"/> </tx:attributes> </tx:advice> <!-- 配置事务切面，即让哪些包下的类需要事务 --> <aop:config> <aop:pointcut id="pointcut" expression="execution(* zhongfucheng.service.*.*(..))"/> <aop:advisor advice-ref="tx" pointcut-ref="pointcut"/> </aop:config> <!--扫描注解--> <context:component-scan base-package="zhongfucheng"/> </beans>
@Repository public class EmpDao { @Autowired private SqlSessionFactory sqlSessionFactory; /** * 增加员工 */ public void add(Emp emp) throws Exception { SqlSession sqlSession = sqlSessionFactory.openSession(); sqlSession.insert("empNamespace.add", emp); sqlSession.close(); } } @Service public class EmpService { @Autowired private zhongfucheng.dao.EmpDao empDao; public void addEmp(Emp emp) throws Exception { empDao.add(emp); } } @Controller @RequestMapping("/emp") public class EmpAction { @Autowired private EmpService empService; @RequestMapping("/register") public void register(Emp emp) throws Exception { empService.addEmp(emp); System.out.println("注册成功"); } }
