Mybatis使用篇之四:整合Spring
Mybaits为什么要整合Spring?
说白了其实就想使用Spring提供的服务,比如Spring的事务管理、Spring的IOC对Bean进行管理等。
Mybatis怎么整合Spring?
由于目前Spring官方还没有出整合Mybatis的特性,所以这里在Spring框架和MyBatis框架上再添加用于整合的框架“mybatis-spring-1.0.2.jar” (该框架时MyBatis官方自己出的)。
(1)新建一个Web工程,名称为MybatisSpring。
(2)将Spring3.0.3、Mybatis3.0.6、Mybatis-Spring1.0.2、log4j、Oracle驱动和DBCP连接池的JAR包放到Web工程的lib下面,具体的JAR包如下:
- classes12.jar
- log4j-1.2.16.jar
- mybatis-3.0.6.jar
- mybatis-spring-1.0.2.jar
- org.springframework.aop-3.0.3.RELEASE.jar
- org.springframework.asm-3.0.3.RELEASE.jar
- org.springframework.aspects-3.0.3.RELEASE.jar
- org.springframework.beans-3.0.3.RELEASE.jar
- org.springframework.context-3.0.3.RELEASE.jar
- org.springframework.context.support-3.0.3.RELEASE.jar
- org.springframework.core-3.0.3.RELEASE.jar
- org.springframework.expression-3.0.3.RELEASE.jar
- org.springframework.jdbc-3.0.3.RELEASE.jar
- org.springframework.transaction-3.0.3.RELEASE.jar
- org.springframework.web-3.0.3.RELEASE.jar
- commons-logging-1.1.1.jar
- commons-dbcp-1.2.jar
- commons-pool-1.4.jar
classes12.jar log4j-1.2.16.jar mybatis-3.0.6.jar mybatis-spring-1.0.2.jar org.springframework.aop-3.0.3.RELEASE.jar org.springframework.asm-3.0.3.RELEASE.jar org.springframework.aspects-3.0.3.RELEASE.jar org.springframework.beans-3.0.3.RELEASE.jar org.springframework.context-3.0.3.RELEASE.jar org.springframework.context.support-3.0.3.RELEASE.jar org.springframework.core-3.0.3.RELEASE.jar org.springframework.expression-3.0.3.RELEASE.jar org.springframework.jdbc-3.0.3.RELEASE.jar org.springframework.transaction-3.0.3.RELEASE.jar org.springframework.web-3.0.3.RELEASE.jar commons-logging-1.1.1.jar commons-dbcp-1.2.jar commons-pool-1.4.jar
(3)在src下面新建log4j.properties文件,该文件的内容如下:
- log4j.appender.stdout=org.apache.log4j.ConsoleAppender
- log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
- log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] -%m%n
- log4j.logger.com.ibatis=debug
- log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug
- log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug
- log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug
- log4j.logger.java.sql.Connection=debug
- log4j.logger.java.sql.Statement=debug
- log4j.logger.java.sql.PreparedStatement=debug,stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] -%m%n log4j.logger.com.ibatis=debug log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=debug log4j.logger.com.ibatis.common.jdbc.ScriptRunner=debug log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=debug log4j.logger.java.sql.Connection=debug log4j.logger.java.sql.Statement=debug log4j.logger.java.sql.PreparedStatement=debug,stdout
(4)在Oracle数据库执行以下SQL,创建一个USER_INFO的表:
- -- Create table
- create table USER_INFO
- (
- ID NUMBER(12) not null,
- NAME VARCHAR2(50)
- );
- --Insert data
- insert into USER_INFO(ID,NAME) values(1,'张三');
-- Create table create table USER_INFO ( ID NUMBER(12) not null, NAME VARCHAR2(50) ); --Insert data insert into USER_INFO(ID,NAME) values(1,'张三');
(5)新建一个Java类UserInfo.java,该类的内容如下:
- package com.user;
- public class UserInfo {
- private int id;
- private String name;
- public UserInfo() {
- }
- public UserInfo(String name) {
- this(0, name);
- }
- public UserInfo(int id, String name) {
- this.id = id;
- this.name = name;
- }
- public int getId() {
- return id;
- }
- public void setId(int id) {
- this.id = id;
- }
- public String getName() {
- return name;
- }
- public void setName(String name) {
- this.name = name;
- }
- @Override
- public String toString() {
- return "ID: " + id + ", Name: " + name;
- }
- }
package com.user; public class UserInfo { private int id; private String name; public UserInfo() { } public UserInfo(String name) { this(0, name); } public UserInfo(int id, String name) { this.id = id; this.name = name; } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } @Override public String toString() { return "ID: " + id + ", Name: " + name; } }
(6)在com.user.sqlmap下面新建UserInfo.xml文件,该文件的内容如下:
- <?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="User">
- <select id="selectUser" parameterType="int" resultType="UserInfo">
- <![CDATA[
- select * from user_info where id = #{id}
- ]]>
- </select>
- </mapper>
<?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="User"> <select id="selectUser" parameterType="int" resultType="UserInfo"> <![CDATA[ select * from user_info where id = #{id} ]]> </select> </mapper>
(7)在src下面新建mybatis.cfg.xml文件,该文件的内容如下:
- <?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>
- <typeAliases>
- <typeAlias alias="UserInfo" type="com.user.UserInfo" />
- </typeAliases>
- <mappers>
- <mapper resource="com/user/sqlmap/UserInfo.xml" />
- </mappers>
- </configuration>
<?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> <typeAliases> <typeAlias alias="UserInfo" type="com.user.UserInfo" /> </typeAliases> <mappers> <mapper resource="com/user/sqlmap/UserInfo.xml" /> </mappers> </configuration>
(8)新建一个Java类UserService.java,该类的内容如下:
- package com.user;
- import org.mybatis.spring.SqlSessionTemplate;
- public class UserService {
- private SqlSessionTemplate sqlSession;
- public SqlSessionTemplate getSqlSession() {
- return sqlSession;
- }
- public void setSqlSession(SqlSessionTemplate sqlSession) {
- this.sqlSession = sqlSession;
- }
- public UserInfo selectUser(){
- UserInfo user = null;
- try {
- user = (UserInfo) sqlSession.selectOne("User.selectUser", "1");
- } catch (Exception e) {
- e.printStackTrace();
- }
- return user;
- }
- }
package com.user; import org.mybatis.spring.SqlSessionTemplate; public class UserService { private SqlSessionTemplate sqlSession; public SqlSessionTemplate getSqlSession() { return sqlSession; } public void setSqlSession(SqlSessionTemplate sqlSession) { this.sqlSession = sqlSession; } public UserInfo selectUser(){ UserInfo user = null; try { user = (UserInfo) sqlSession.selectOne("User.selectUser", "1"); } catch (Exception e) { e.printStackTrace(); } return user; } }
(9)在src下面新建applicationContext.xml文件,该文件的内容如下:
- <?xml version="1.0" encoding="UTF-8"?>
- <beans xmlns="http://www.springframework.org/schema/beans"
- default-autowire="byName"
- 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-3.0.xsd">
- <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
- <property name="driverClassName" value="oracle.jdbc.OracleDriver" />
- <property name="url" value="jdbc:oracle:thin:@localhost:1521:SID" />
- <property name="username" value="xxxx" />
- <property name="password" value="xxxx" />
- <property name="maxActive" value="100"></property>
- <property name="maxIdle" value="30"></property>
- <property name="maxWait" value="500"></property>
- <property name="defaultAutoCommit" value="true"></property>
- </bean>
- <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
- <property name="configLocation" value="classpath:mybatis.cfg.xml"></property>
- <property name="dataSource" ref="dataSource" />
- </bean>
- <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
- <constructor-arg index="0" ref="sqlSessionFactory" />
- </bean>
- <bean id="userService" class="com.user.UserService">
- <property name="sqlSession" ref="sqlSessionTemplate" />
- </bean>
- </beans>
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" default-autowire="byName" 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-3.0.xsd"> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="oracle.jdbc.OracleDriver" /> <property name="url" value="jdbc:oracle:thin:@localhost:1521:SID" /> <property name="username" value="xxxx" /> <property name="password" value="xxxx" /> <property name="maxActive" value="100"></property> <property name="maxIdle" value="30"></property> <property name="maxWait" value="500"></property> <property name="defaultAutoCommit" value="true"></property> </bean> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="configLocation" value="classpath:mybatis.cfg.xml"></property> <property name="dataSource" ref="dataSource" /> </bean> <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate"> <constructor-arg index="0" ref="sqlSessionFactory" /> </bean> <bean id="userService" class="com.user.UserService"> <property name="sqlSession" ref="sqlSessionTemplate" /> </bean> </beans>
(10)新建一个测试Java类UserInfoTest.java,该类的具体内容如下:
- package com.user;
- import java.io.IOException;
- import org.springframework.context.ApplicationContext;
- import org.springframework.context.support.ClassPathXmlApplicationContext;
- public class UserInfoTest {
- /**
- * @param args
- * @throws IOException
- */
- public static void main(String[] args) throws IOException {
- ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
- UserService userService = (UserService)context.getBean("userService");
- UserInfo userInfo = userService.selectUser();
- System.out.println(userInfo);
- }
- }
package com.user; import java.io.IOException; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class UserInfoTest { /** * @param args * @throws IOException */ public static void main(String[] args) throws IOException { ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml"); UserService userService = (UserService)context.getBean("userService"); UserInfo userInfo = userService.selectUser(); System.out.println(userInfo); } }
(11)右键UserInfoTest 类,选择Run As Application,运行MyBaits操作数据库。
- log4j:WARN No appenders could be found for logger (org.springframework.context.support.ClassPathXmlApplicationContext).
- log4j:WARN Please initialize the log4j system properly.
- log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
- 2012-02-11 21:13:42,156 DEBUG [java.sql.PreparedStatement] -==> Executing: select * from user_info where id = ?
- 2012-02-11 21:13:42,156 DEBUG [java.sql.PreparedStatement] -==> Parameters: 1(String)
- ID: 1, Name: 张三
log4j:WARN No appenders could be found for logger (org.springframework.context.support.ClassPathXmlApplicationContext). log4j:WARN Please initialize the log4j system properly. log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info. 2012-02-11 21:13:42,156 DEBUG [java.sql.PreparedStatement] -==> Executing: select * from user_info where id = ? 2012-02-11 21:13:42,156 DEBUG [java.sql.PreparedStatement] -==> Parameters: 1(String) ID: 1, Name: 张三
转自http://chenjc-it.iteye.com/blog/1402939