MyBatis系列：（9）mybatis-spring-springmvc-oracle/mysql整合

大体思路：首先是配置好mybatis的环境，其次就是mybatis与spring的整合，其整合的目标是①mybatis的SqlSessionFactory交由Spring来创建②mybatis的事务交由Spring来处理；最后就是springmvc的融入，使得mybatis(dao层)、spring（中间层）、springmvc(web层)融为一体。

1、MyBatis环境配置

步骤：jar包->SQL语句->entity->dao

1.1、引入jar包

mybatis	mybatis-3.2.7.jar
mybatis的支持包	asm-3.3.1.jar commons-logging-1.1.1.jar log4j-1.2.17.jar
oracle	ojdbc5.jar

1.2、SQL语句

OracleSQL

create table emps(eid number(1) primary key,
ename varchar2(20),
esal number(6,2),
egender varchar2(3)
);

1.3、entity

Emp.java

package com.rk.entity;public class Emp {    private Integer id;    private String name;    private Double sal;    private String gender;    public Emp(){}        public Emp(Integer id, String name, Double sal, String gender) {        this.id = id;        this.name = name;        this.sal = sal;        this.gender = gender;    }    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 getGender() {        return gender;    }    public void setGender(String gender) {        this.gender = gender;    }    }

1.4、dao

EmpDao.java

package com.rk.dao;import java.io.IOException;import java.io.Reader;import org.apache.ibatis.io.Resources;import org.apache.ibatis.session.SqlSession;import org.apache.ibatis.session.SqlSessionFactory;import org.apache.ibatis.session.SqlSessionFactoryBuilder;import com.rk.entity.Emp;public class EmpDao {    private static SqlSessionFactory sqlSessionFactory;    static {        try {            Reader reader = Resources.getResourceAsReader("mybatis.xml");            sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);        } catch (Exception e) {            e.printStackTrace();            throw new RuntimeException(e);        }    }    public void add(Emp emp)throws Exception{        SqlSession sqlSession = sqlSessionFactory.openSession();        sqlSession.insert("empNamespace.add", emp);        sqlSession.commit();        sqlSession.close();    }}

1.5、mybatis的映射文件(EmpMapper.xml)和主配置文件(mybatis.xml)

EmpMapper.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="empNamespace">    <resultMap type="com.rk.entity.Emp" id="empResultMap">        <id property="id" column="eid"/>        <result property="name" column="ename"/>        <result property="sal" column="esal"/>        <result property="gender" column="egender"/>    </resultMap>    <insert id="add" parameterType="com.rk.entity.Emp">        insert into emps(eid,ename,esal,egender) values(#{id},#{name},#{sal},#{gender})    </insert></mapper>

mybatis.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>    <properties resource="db.properties"/>    <environments default="oracle_development">        <environment id="oracle_development">            <transactionManager type="JDBC"></transactionManager>            <dataSource type="POOLED">                <property name="driver" value="${oracle.driver}"/>                <property name="url" value="${oracle.url}"/>                <property name="username" value="${oracle.username}"/>                <property name="password" value="${oracle.password}"/>            </dataSource>        </environment>        <environment id="mysql_developer">            <transactionManager type="jdbc"/>               <dataSource type="pooled">                <property name="driver" value="${mysql.driver}"/>                <property name="url" value="${mysql.url}"/>                <property name="username" value="${mysql.username}"/>                <property name="password" value="${mysql.password}"/>            </dataSource>        </environment>    </environments>    <mappers>        <mapper resource="com/rk/entity/EmpMapper.xml"/>    </mappers></configuration>

db.properties

#key=valueoracle.driver=oracle.jdbc.driver.OracleDriveroracle.url=jdbc:oracle:thin:@127.0.0.1:1521:orcloracle.username=scottoracle.password=tigermysql.driver=com.mysql.jdbc.Drivermysql.url=jdbc:mysql://127.0.0.1:3306/testdbmysql.username=rootmysql.password=root

1.6、测试

package com.rk.test;import org.junit.Test;import com.rk.dao.EmpDao;import com.rk.entity.Emp;public class MybatisTest {    @Test    public void testAdd() throws Exception {        EmpDao dao = new EmpDao();        Emp emp = new Emp(1, "小明", 800D, "男");        dao.add(emp);    }}

2、Mybatis与Spring整合

（1）MyBatis的SqlSessionFactory交由Spring来创建

（2）Mybatis的事务交由Spring来管理

（3）DAO、Service对象的生成和依赖注入由Spring来完成

2.1、引入需要的jar包

c3p0	c3p0-0.9.1.2.jar
spring-core	commons-logging-1.2.jar (mybaits中引入了1.1.1版本，可以删除1.1.1版本) spring-beans-3.2.5.RELEASE.jar spring-context-3.2.5.RELEASE.jar spring-core-3.2.5.RELEASE.jar spring-expression-3.2.5.RELEASE.jar
spring-aop	aopalliance-.jar aspectjrt.jar aspectjweaver.jar spring-aop-3.2.5.RELEASE.jar
spring-jdbc	spring-jdbc-3.2.5.RELEASE.jar spring-tx-3.2.5.RELEASE.jar
spring-orm	spring-orm-3.2.5.RELEASE.jar
mybatis与spring整合的jar	mybatis-spring-1.2.4.jar 下载地址：https://github.com/mybatis/spring/releases  （版本不同带来的问题：之前引入的是mybatis-spring-1.0.0.jar，后来测试的时候发现错误，错误信息：java.lang.AbstractMethodError: org.mybatis.spring.transaction.SpringManagedTransactionFactory.newTransaction(Ljavax/sql/DataSource;Lorg/apache/ibatis/session/TransactionIsolationLevel;Z)Lorg/apache/ibatis/transaction/Transaction。换成1.2.4版本后，错误消失。）

2.2、修改mybatis.xml

注释或者删除mybatis.xml中关于数据库连接的信息

<?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"/>    <environments default="oracle_development">        <environment id="oracle_development">            <transactionManager type="JDBC"></transactionManager>            <dataSource type="POOLED">                <property name="driver" value="${oracle.driver}"/>                <property name="url" value="${oracle.url}"/>                <property name="username" value="${oracle.username}"/>                <property name="password" value="${oracle.password}"/>            </dataSource>        </environment>        <environment id="mysql_developer">            <transactionManager type="jdbc"/>               <dataSource type="pooled">                <property name="driver" value="${mysql.driver}"/>                <property name="url" value="${mysql.url}"/>                <property name="username" value="${mysql.username}"/>                <property name="password" value="${mysql.password}"/>            </dataSource>        </environment>    </environments>     -->    <mappers>        <mapper resource="com/rk/entity/EmpMapper.xml"/>    </mappers></configuration>

2.3、添加Spring的主配置文件spring.xml

（1）MyBatis的SqlSessionFactory交由Spring来创建

（2）Mybatis的事务交由Spring来管理

（3）DAO、Service对象的生成和依赖注入由Spring来完成

<?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:context="http://www.springframework.org/schema/context"    xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:aop="http://www.springframework.org/schema/aop"    xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="        http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.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        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc.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>        <property name="jdbcUrl" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"></property>        <property name="user" value="scott"></property>        <property name="password" value="tiger"></property>    </bean>  -->        <context:property-placeholder location="classpath:db.properties"/>    <bean id="comboPooledDataSourceID" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <property name="driverClass" value="${oracle.driver}"></property>        <property name="jdbcUrl" value="${oracle.url}"></property>        <property name="user" value="${oracle.username}"></property>        <property name="password" value="${oracle.password}"></property>    </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="dataSource" ref="comboPooledDataSourceID"></property>        <property name="configLocation" value="classpath:mybatis.xml"></property>    </bean>        <!-- 配置Mybatis的事务管理器，即DataSourceTransactionManager。            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"></property>    </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(* com.rk.service.*.*(..))"/>        <aop:advisor advice-ref="tx" pointcut-ref="pointcut"/>    </aop:config>        <!-- 注册EmpDao -->    <bean id="empDaoID" class="com.rk.dao.EmpDao">        <property name="sqlSessionFactory" ref="sqlSessionFactoryBeanID"></property>    </bean>        <!-- 注册EmpService -->    <bean id="empService" class="com.rk.service.EmpService">        <property name="empDao" ref="empDaoID"></property>    </bean></beans>

2.4、Dao

EmpDao.java

package com.rk.dao;import java.io.IOException;import java.io.Reader;import org.apache.ibatis.io.Resources;import org.apache.ibatis.session.SqlSession;import org.apache.ibatis.session.SqlSessionFactory;import org.apache.ibatis.session.SqlSessionFactoryBuilder;import com.rk.entity.Emp;public class EmpDao {    private SqlSessionFactory sqlSessionFactory;    public void setSqlSessionFactory(SqlSessionFactory sqlSessionFactory) {        this.sqlSessionFactory = sqlSessionFactory;    }        public void add(Emp emp) throws Exception{        SqlSession sqlSession = sqlSessionFactory.openSession();        sqlSession.insert("empNamespace.add", emp);        sqlSession.close();    }}

2.5、Serivce

EmpService.java

package com.rk.service;import com.rk.dao.EmpDao;import com.rk.entity.Emp;public class EmpService {    private EmpDao empDao;    public void setEmpDao(EmpDao empDao) {        this.empDao = empDao;    }        public void register(Emp emp) throws Exception{//        int i = 1/0;//        System.out.println(i);        empDao.add(emp);    }}

2.6、测试

package com.rk.test;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.rk.entity.Emp;import com.rk.service.EmpService;public class TestMybatis_Spring {    @Test    public void testRegister() throws Exception {        ApplicationContext ac = new ClassPathXmlApplicationContext("spring.xml");        EmpService empService = (EmpService) ac.getBean("empService");                Emp emp = new Emp(3, "小刚", 400D, "男");        empService.register(emp);            }}

3、SpringMVC的融入

3.1、引入JAR包

spring-web	spring-web-3.2.5.RELEASE.jar
spring-webmvc	spring-webmvc-3.2.5.RELEASE.jar

3.2、配置web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">    <display-name>springmvc-mybatis-oracle</display-name>    <welcome-file-list>        <welcome-file>index.jsp</welcome-file>    </welcome-file-list>    <!-- 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>        <!-- POST编码过滤器 -->    <filter>        <filter-name>CharacterEncodingFilter</filter-name>        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>        <init-param>            <param-name>encoding</param-name>            <param-value>UTF-8</param-value>        </init-param>    </filter>    <filter-mapping>        <filter-name>CharacterEncodingFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>     </web-app>

3.3、修改spring.xml

添加以下内容

    <!-- 注册EmpAction -->    <context:component-scan base-package="com.rk.action"/>           <!-- 通知springioc容器这些注解的作用 -->         <context:annotation-config/>        <!-- 视图解析器 -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/jsp/"/>        <property name="suffix" value=".jsp"/>    </bean>

完整的spring.xml

<?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:context="http://www.springframework.org/schema/context"    xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:aop="http://www.springframework.org/schema/aop"    xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="        http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.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        http://www.springframework.org/schema/aop        http://www.springframework.org/schema/aop/spring-aop.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc.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>        <property name="jdbcUrl" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"></property>        <property name="user" value="scott"></property>        <property name="password" value="tiger"></property>    </bean>  -->        <context:property-placeholder location="classpath:db.properties"/>    <bean id="comboPooledDataSourceID" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <property name="driverClass" value="${oracle.driver}"></property>        <property name="jdbcUrl" value="${oracle.url}"></property>        <property name="user" value="${oracle.username}"></property>        <property name="password" value="${oracle.password}"></property>    </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="dataSource" ref="comboPooledDataSourceID"></property>        <property name="configLocation" value="classpath:mybatis.xml"></property>    </bean>        <!-- 配置Mybatis的事务管理器，即DataSourceTransactionManager。            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"></property>    </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(* com.rk.service.*.*(..))"/>        <aop:advisor advice-ref="tx" pointcut-ref="pointcut"/>    </aop:config>        <!-- 注册EmpDao -->    <bean id="empDaoID" class="com.rk.dao.EmpDao">        <property name="sqlSessionFactory" ref="sqlSessionFactoryBeanID"></property>    </bean>        <!-- 注册EmpService -->    <bean id="empServiceID" class="com.rk.service.EmpService">        <property name="empDao" ref="empDaoID"></property>    </bean>        <!-- 注册EmpAction -->    <context:component-scan base-package="com.rk.action"/>           <!-- 通知springioc容器这些注解的作用 -->         <context:annotation-config/>        <!-- 视图解析器 -->    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/jsp/"/>        <property name="suffix" value=".jsp"/>    </bean></beans>

3.4、添加action

package com.rk.action;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import com.rk.entity.Emp;import com.rk.service.EmpService;@Controller@RequestMapping(value="/emp")public class EmpAction {    private EmpService empService;    @Resource(name="empServiceID")    public void setEmpService(EmpService empService) {        this.empService = empService;    }    @RequestMapping(value="/registerEmp")    public String registerEmp(Emp emp) throws Exception{        empService.register(emp);        return "success";    }}

3.5、添加index.jsp和success.jsp

index.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <meta name="content-type" content="text/html; charset=UTF-8"/>    <title>My JSP 'index.jsp' starting page</title>  </head>  <body>    <form action="${pageContext.request.contextPath}/emp/registerEmp.action" method="POST">        <table>            <tr>                <td>编号：</td>                <td>                    <input type="text" name="id"/>                </td>            </tr>            <tr>                <td>姓名：</td>                <td>                    <input type="text" name="name"/>                </td>            </tr>            <tr>                <td>薪水：</td>                <td>                    <input type="text" name="sal"/>                </td>            </tr>            <tr>                <td>性别：</td>                <td>                    <input type="radio" name="gender" value="男"/>男                    <input type="radio" name="gender" value="女" checked="checked"/>女                </td>            </tr>            <tr>                <td colspan="2">                    <input type="submit" value="注册"/>                </td>            </tr>        </table>    </form>  </body></html>

/jsp/success.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <meta name="content-type" content="text/html; charset=UTF-8"/>    <title>success page</title>  </head>    <body>    success <br>  </body></html>