Mybatis与Spring整合

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>

创建Dao、Service、Action

@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");
}

}

JSP页面测试

<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>员工注册</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/emp/register.action" method="POST">
<table border="2" align="center">
<tr>
<th>编号</th>
<td><input type="text" name="id"></td>
</tr>
<tr>
<th>姓名</th>
<td><input type="text" name="name"></td>
</tr>
<tr>
<th>薪水</th>
<td><input type="text" name="sal"></td>
</tr>
<tr>
<th>性别</th>
<td>
<input type="radio" name="sex" value="男"/>男
<input type="radio" name="sex" value="女" checked/>女
</td>
</tr>
<tr>
<td colspan="2" align="center">
<input type="submit" value="注册"/>
</td>
</tr>
</table>
</form>
</body>
</html>

总结

web.xml加载Spring配置文件

Spring配置文件配置数据连接池，SessionFactory、事务、扫描注解

Mybatis总配置文件、实体以及相对应的映射文件

将映射文件加入到总配置文件中。

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