SpringMVC+Spring+Mybatis整合，使用druid连接池，声明式事务，maven配置
2024-05-13 17:40:06
一直对springmvc和mybatis挺怀念的，最近想自己再搭建下框架，然后写点什么。
暂时没有整合缓存，druid也没有做ip地址的过滤。Spring的AOP简单配置了下，也还没具体弄，不知道能不能用，log也不知道能不能用，`(*∩_∩*)′哈哈，有点不负责任......
2014-08-12 23:45补：=================开始=================1、增加quartz :http://www.cnblogs.com/acehalo/p/3902731.html2、mybatis添加ehcache缓存：http://www.cnblogs.com/acehalo/p/3902883.html3、spring的aop: http://www.cnblogs.com/acehalo/p/3905718.html=================结束================
直接上代码：
使用的eclipse和eclipse自带的maven，参考了网上的资料，有些代码是拷贝的，不过都自己测试过了。嗯，可以跑起来...
先上项目结构：
新建maven项目，选择web，然后配置pom：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"><modelVersion>4.0.0</modelVersion><groupId>ACE</groupId><artifactId>Test</artifactId><packaging>war</packaging><version>0.0.1-SNAPSHOT</version><name>Test Maven Webapp</name><url>http://maven.apache.org</url><properties><org.springframework.version>4.0.0.M2</org.springframework.version><org.slf4j.version>1.6.1</org.slf4j.version></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><!-- servlet --><dependency><groupId>javax.servlet</groupId><artifactId>servlet-api</artifactId><version>2.5</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet.jsp</groupId><artifactId>jsp-api</artifactId><version>2.1</version><scope>provided</scope></dependency><dependency><groupId>javax.servlet</groupId><artifactId>jstl</artifactId><version>1.2</version></dependency><!--mysql --><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.26</version></dependency><!-- spring --><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aspects</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>${org.springframework.version}</version><exclusions><exclusion><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context-support</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-expression</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-instrument</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-instrument-tomcat</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-jms</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-oxm</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc-portlet</artifactId><version>${org.springframework.version}</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-websocket</artifactId><version>${org.springframework.version}</version></dependency><!--mybatis --><dependency><groupId>org.mybatis</groupId><artifactId>mybatis</artifactId><version>3.2.2</version></dependency><dependency><groupId>org.mybatis</groupId><artifactId>mybatis-spring</artifactId><version>1.2.0</version></dependency><!-- Logging --><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>${org.slf4j.version}</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>${org.slf4j.version}</version><scope>runtime</scope></dependency><dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.16</version><scope>runtime</scope></dependency><!-- druid --><dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.7</version>
</dependency></dependencies><!-- 仓库 --><repositories><!-- For Hibernate Validator --><repository><id>org.jboss.repository.release</id><name>JBoss Maven Release Repository</name><url>https://repository.jboss.org/nexus/content/repositories/releases</url><snapshots><enabled>false</enabled></snapshots></repository><repository><id>org.springsource.maven.snapshot</id><name>SpringSource Maven Central-compatible Snapshot Repository</name><url>http://maven.springframework.org/snapshot</url><snapshots><updatePolicy>daily</updatePolicy></snapshots></repository><repository><id>spring-milestone</id><name>Spring Maven MILESTONE Repository</name><url>http://maven.springframework.org/milestone</url></repository><repository><id>standard repo</id><url>http://repo1.maven.org/maven2</url></repository><repository><id>mirror repo</id><url>http://mirrors.ibiblio.org/pub/mirrors/maven2</url></repository><repository><id>com.springsource.repository.bundles.release</id><name>SpringSource Enterprise Bundle Repository - SpringSource Bundle Releases</name><url>http://repository.springsource.com/maven/bundles/release</url></repository><repository><id>com.springsource.repository.bundles.external</id><name>SpringSource Enterprise Bundle Repository - External Bundle Releases</name><url>http://repository.springsource.com/maven/bundles/external</url></repository><repository><id>sqlfire-release</id><url>http://dist.gemstone.com/maven/release</url></repository></repositories><build><finalName>Test</finalName></build>
</project>
web.xml:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"version="2.5"><!-- filter --><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><init-param><param-name>forceEncoding</param-name><param-value>true</param-value></init-param></filter><filter-mapping><filter-name>characterEncodingFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- listener --><listener><listener-class>org.springframework.web.context.request.RequestContextListener</listener-class></listener><!-- servlet --><servlet><servlet-name>Test</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>classpath*:applicationContext.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><servlet-mapping><servlet-name>Test</servlet-name><url-pattern>*.do</url-pattern></servlet-mapping><error-page><error-code>404</error-code><location>/error/404.jsp</location></error-page><!-- druid --><servlet><servlet-name>DruidStatView</servlet-name><servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class></servlet><servlet-mapping><servlet-name>DruidStatView</servlet-name><url-pattern>/druid/*</url-pattern></servlet-mapping></web-app>
applicationContext.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"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><!-- spring 自动扫描组件 --><context:component-scan base-package="com.hi.test"/><import resource="spring-mvc.xml"/><import resource="spring-database.xml"/><import resource="spring-aop.xml"/><bean id="log4jInitialization"class="org.springframework.beans.factory.config.MethodInvokingFactoryBean"><property name="targetClass"value="org.springframework.util.Log4jConfigurer" /><property name="targetMethod" value="initLogging" /><property name="arguments"><list><value>classpath:log4j.xml</value></list></property></bean></beans>
spring-mvc.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:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsd"><mvc:annotation-driven /><mvc:default-servlet-handler /><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/><property name="prefix" value="WEB-INF/views/"/><property name="suffix" value=".jsp"/></bean></beans>
spring-aop.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:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-3.2.xsd"><!-- spring aop --><aop:aspectj-autoproxy /></beans>
spring-database.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:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xmlns:aop="http://www.springframework.org/schema/aop" 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/mvchttp://www.springframework.org/schema/mvc/spring-mvc.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop.xsd"><!-- 数据源 org.apache.commons.dbcp.BasicDataSource com.alibaba.druid.pool.DruidDataSource --><bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql://localhost:3306/mydb" /><property name="username" value="root" /><property name="password" value="123456" /><!-- 初始化连接大小 --><property name="initialSize" value="0" /><!-- 连接池最大使用连接数量 --><property name="maxActive" value="20" /><!-- 连接池最小空闲 --><property name="minIdle" value="0" /><!-- 获取连接最大等待时间 --><property name="maxWait" value="60000" /><property name="validationQuery"><value>SELECT 1</value></property> <property name="testOnBorrow" value="false" /><property name="testOnReturn" value="false" /><property name="testWhileIdle" value="true" /><!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --><property name="timeBetweenEvictionRunsMillis" value="60000" /><!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --><property name="minEvictableIdleTimeMillis" value="25200000" /><!-- 打开removeAbandoned功能 --><property name="removeAbandoned" value="true" /><!-- 1800秒，也就是30分钟 --><property name="removeAbandonedTimeout" value="1800" /><!-- 关闭abanded连接时输出错误日志 --><property name="logAbandoned" value="true" /><!-- 监控数据库 --><!-- <property name="filters" value="stat" /> --><property name="filters" value="mergeStat" /></bean><!-- 配置druid监控spring jdbc --><bean id="druid-stat-interceptor"class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"></bean><bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"scope="prototype"><property name="patterns"><list><value>com.hi.test.service.*</value></list></property></bean><aop:config><aop:advisor advice-ref="druid-stat-interceptor"pointcut-ref="druid-stat-pointcut" /></aop:config><bean id="transactionManager"class="org.springframework.jdbc.datasource.DataSourceTransactionManager"><property name="dataSource" ref="dataSource" /></bean><!-- 声明式事务 --><tx:annotation-driven transaction-manager="transactionManager"proxy-target-class="true" /><bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"><property name="dataSource" ref="dataSource" /> <property name="configLocation" value="classpath:mybatis-config.xml"></property> </bean><!-- 注册Mapper方式二：也可不指定特定mapper，而使用自动扫描包的方式来注册各种Mapper ，配置如下： --><bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"><property name="annotationClass" value="org.springframework.stereotype.Repository" /><property name="basePackage" value="com.hi.test.mapper" /><property name="sqlSessionFactory" ref="sqlSessionFactory" /></bean></beans>
mybatis-config.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> <mappers> <mapper resource="com/hi/test/mapper/UserMapper.xml"/> </mappers> </configuration>
log4j.xml:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE log4j:configuration PUBLIC "-//LOGGER" "log4j.dtd"><log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/"><!-- Appenders --><appender name="console" class="org.apache.log4j.ConsoleAppender"><param name="Target" value="System.out" /><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%-5p: %c - %m%n" /></layout></appender><!-- 3rdparty Loggers --><logger name="org.springframework.core"><level value="info" /></logger><logger name="org.springframework.beans"><level value="info" /></logger><logger name="org.springframework.context"><level value="info" /></logger><logger name="org.springframework.web"><level value="info" /></logger><logger name="org.mybatis"><level value="info" /></logger><logger name="com.hi"><level value="info"/></logger><!-- Root Logger --><root><priority value="warn" /><appender-ref ref="console" /></root></log4j:configuration>
commons-logging.properties:
org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger
IndexController:
package com.hi.test.controller;import java.util.List;
import java.util.Map;import javax.servlet.http.HttpServletRequest;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import com.hi.test.bean.User;
import com.hi.test.mapper.UserMapper;
import com.hi.test.service.TxTestService;@Controller
public class IndexController {@AutowiredUserMapper userMapper;@AutowiredTxTestService txTestService;@RequestMapping(value = "/index")public String index(HttpServletRequest request,Map model) {//String name=request.getParameter("name");//model.put("name", name);
User u=new User(); u.setUsername("admin"); u.setPassword("admin"); User user=userMapper.selectUser(u); model.put("user", user);return "hi";}@RequestMapping(value = "/text")@ResponseBodypublic String text(HttpServletRequest request) {return "{\"what\":\"hi\"}";}@RequestMapping(value = "/indexList")public String indexList(HttpServletRequest request,Map model) {List<User> userList=userMapper.selectUserLsit();model.put("userList", userList);return "hiList";}@RequestMapping(value = "/TxTest")@ResponseBodypublic String test(HttpServletRequest request) {txTestService.insert();return "";}
}
User:
package com.hi.test.bean;public class User {private int id; private String username; private String password; public User(){ } public int getId() { return id; } public void setId(int id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public String toString(){ return "User [id = "+ id +" , username = "+ username +"]" + " , password = "+ password; }
}
UserMapper:
package com.hi.test.mapper;import java.util.List;import org.springframework.stereotype.Repository;import com.hi.test.bean.User;@Repository
public interface UserMapper {public User selectUser(User user); public void insertUser(User user); public void updateUser(User user); public void deleteUser(int userId);public List selectUserLsit();
}
UserMapper.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="com.hi.test.mapper.UserMapper"> <resultMap id="userList" type="com.hi.test.bean.User"> <id column="id" property="id" /> <result column="username" property="username" /> <result column="password" property="password" /> </resultMap> <select id="selectUser" parameterType="com.hi.test.bean.User" resultType="com.hi.test.bean.User"> SELECT * FROM user WHERE username=#{username} AND password=#{password}
</select>
<insert id="insertUser" parameterType="com.hi.test.bean.User" flushCache="true"> INSERT INTO user (id,username,password) VALUES (#{id},#{username},#{password})
</insert>
<update id="updateUser" parameterType="com.hi.test.bean.User"> UPDATE user SET password=#{password} WHERE id=#{id}
</update>
<delete id="deleteUser" parameterType="int"> DELETE FROM user WHERE id=#{userId}
</delete> <select id="selectUserLsit" resultMap="userList"> SELECT * FROM user
</select>
</mapper>
TxTestService:
package com.hi.test.service;import java.util.UUID;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;import com.hi.test.bean.User;
import com.hi.test.mapper.UserMapper;@Transactional
@Service
public class TxTestService {@AutowiredUserMapper userMapper;public void insert() {for (int i = 0; i < 100; i++) {User u = new User();u.setUsername(UUID.randomUUID().toString());u.setPassword(UUID.randomUUID().toString());userMapper.insertUser(u);}throw new RuntimeException();}}
sql文件,navicat导出的:
/*
Navicat MySQL Data TransferSource Server : MySQL
Source Server Version : 50704
Source Host : localhost:3306
Source Database : mydbTarget Server Type : MYSQL
Target Server Version : 50704
File Encoding : 65001Date: 2014-08-09 23:52:32
*/SET FOREIGN_KEY_CHECKS=0;-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (`id` int(11) NOT NULL AUTO_INCREMENT,`username` varchar(255) NOT NULL,`password` varchar(255) NOT NULL,PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=902 DEFAULT CHARSET=utf8;-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('1', 'admin', 'admin');
index.jsp：
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body>hi</body> </html>
hi.jsp:
<%@ page isELIgnored="false"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
this is springmvc,${user.username }</body>
</html>
hiList.jsp:
<%@ page isELIgnored="false"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<c:forEach var="user" items="${userList}">${user.username}----${user.password}<br>
</c:forEach></body>
</html>
======================================================================================
OK，代码贴完了，项目上右键，debug on server应该就能跑起来了。
几个链接可以查看效果：druid的监控信息：http://localhost:8080/Test/druid/sql.html
http://localhost:8080/Test/
http://localhost:8080/Test/text.do
http://localhost:8080/Test/indexList.do
http://localhost:8080/Test/TxTest.do
现在简单讲讲，配置文件里面有注释就不说了：
一：在配置文件添加事务的时候遇到tx标签没用，在xsi:schemaLocation这里添加两行
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
就可以了。
二：还遇到EL表达式不能用，然后
web.xml修改:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
jsp增加:
<%@ page isELIgnored="false"%>
三：还有c:forEach这种标签不能用
在JSP上增加
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
就可以了
四：spring事务这里
数据库是mysql ，然后表引擎是InnoDB
用navicat在design table---option--engine可以看到
访问http://localhost:8080/Test/TxTest.do之后会出现异常，这个异常是手动抛出的，数据库也没有插入数据。
然后将表的引擎换成MyISAM，保存
之后再访问http://localhost:8080/Test/TxTest.do，发现数据库被插入数据了。
说明：Spring的这个声明事务能使用，MyISAM不支持事务。
五：Controller里的四个方法
第一个方法是一般的测试。
第二个方法是想测试返回json的，主要是@ResponseBody标签。
第三个方法测试LIST。
第四个是测试事务的。
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