基于Maven构建整合SpringMVC+Mybtis+Druid

前几天趁空闲时间整合了下SpringMVC+Mybatis+Druid，这里小记录下，这个Demo是基于Maven构建的，数据源用的是阿里巴巴温少的开源项目Druid，数据库用的是Mysql。

由于Eclipse去安装Maven很不方便，也老出错，这里我使用的是Spring Tool Suite（STS，基于 Spring IDE ，提供了其它的一些特性，如 基于 Spring dm Server 的osgi 开发，及其它一些 Spring 项目的支持，如 Spring Roo ， Spring Batch 等）。

这里是STS的下载地址（集成了Maven）：http://spring.io/tools/sts/all

先看一下整体的项目结构：

　　

一、相关JAR包

由于是基于Maven的项目，找起JAR包自然就方便了许多，我们只需要知道JAR的名字或者其中关键字就可以很轻松的把JAR包以及依赖JAR下载下来，需要多少下多少。

这里给出pom的配置文件。

pom.xml

 <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>SpringMybatis</groupId>
     <artifactId>SpringMybatis</artifactId>
     <packaging>war</packaging>
     <version>0.0.1-SNAPSHOT</version>
     <name>SpringMybatis Maven Webapp</name>
     <url>http://maven.apache.org</url>
     <dependencies>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-core</artifactId>
             <version>3.2.10.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-web</artifactId>
             <version>3.2.10.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-webmvc</artifactId>
             <version>3.2.10.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
             <version>3.2.8</version>
         </dependency>
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis-spring</artifactId>
             <version>1.1.1</version>
         </dependency>
         <dependency>
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
             <version>5.0.2</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
             <version>4.12</version>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>druid</artifactId>
             <version>1.0.11</version>
         </dependency>
         <dependency>
             <groupId>log4j</groupId>
             <artifactId>log4j</artifactId>
             <version>1.2.17</version>
         </dependency>
     </dependencies>
     <build>
         <finalName>SpringMybatis</finalName>
     </build>
 </project>

由于Maven会把JAR包所依赖的JAR包也一起下载下来，这里我们就不需要逐个去写Spring的相关JAR包。

这里用到了阿里巴巴温少的开源项目Druid的数据源，所以额外的多引入了一个Druid的JAR包。

关于JAR的扩展，如果有需要别的可以到：http://search.maven.org/ 去查找，然后复制到这个配置文件即可，Maven会帮我们自动下载添加。

二、相关配置

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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
     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/aop
     http://www.springframework.org/schema/aop/spring-aop.xsd
     http://www.springframework.org/schema/tx
     http://www.springframework.org/schema/tx/spring-tx.xsd">

     <!-- 自动注入 -->
     <context:component-scan base-package="lcw/service"/>

 </beans>

mybatis-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:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
     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/aop
     http://www.springframework.org/schema/aop/spring-aop.xsd
     http://www.springframework.org/schema/tx
     http://www.springframework.org/schema/tx/spring-tx.xsd">

     <!-- 配置数据源 -->
     <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
         <property name="url" value="jdbc:mysql:///test"></property>
         <property name="username" value="root"></property>
         <property name="password" value="root"></property>
     </bean>

     <!-- Mybatis文件 -->
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
         <property name="dataSource" ref="dataSource"></property>
         <property name="mapperLocations"  value="classpath:lcw/mapping/*.xml"></property>
     </bean>

     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
         <property name="basePackage" value="lcw.dao"></property>
         <property name="sqlSessionFactoryBeanName" value    ="sqlSessionFactory"></property>
     </bean>

     <!-- 事务管理器 -->
     <bean id="transactionManager"
         class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
         <property name="dataSource" ref="dataSource"></property>
     </bean>

     <tx:annotation-driven transaction-manager="transactionManager" />

 </beans>

springmvc.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:p="http://www.springframework.org/schema/p"
     xmlns:context="http://www.springframework.org/schema/context"
     xmlns:mvc="http://www.springframework.org/schema/mvc"
     xsi:schemaLocation="
     http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
     http://www.springframework.org/schema/context
     http://www.springframework.org/schema/context/spring-context-3.0.xsd
     http://www.springframework.org/schema/mvc
     http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
     ">

     <!-- 启用spring mvc 注解 -->
     <context:annotation-config />

     <!-- 设置使用注解的类所在的jar包 -->
     <context:component-scan base-package="lcw.controller"></context:component-scan>

     <!-- 完成请求和注解POJO的映射 -->
     <bean
         class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

     <!-- 对转向页面的路径解析。prefix：前缀， suffix：后缀 -->
     <bean
         class="org.springframework.web.servlet.view.InternalResourceViewResolver"
         p:prefix="/" p:suffix=".jsp" />

 </beans>

log4j.properties

 #
 #    Copyright 2009-2012 the original author or authors.
 #
 #    Licensed under the Apache License, Version 2.0 (the "License");
 #    you may not use this file except in compliance with the License.
 #    You may obtain a copy of the License at
 #
 #       http://www.apache.org/licenses/LICENSE-2.0
 #
 #    Unless required by applicable law or agreed to in writing, software
 #    distributed under the License is distributed on an "AS IS" BASIS,
 #    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 #    See the License for the specific language governing permissions and
 #    limitations under the License.
 #

 ### Global logging configuration
 log4j.rootLogger=DEBUG, stdout

 ### Uncomment for MyBatis logging
 log4j.logger.org.apache.ibatis=DEBUG

 ### Console output...
 log4j.appender.stdout=org.apache.log4j.ConsoleAppender
 log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
 log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

三、项目演示

　　

关于model、dao以及mapping的生成方式，在之前的文章《使用Mybatis-Generator自动生成Dao、Model、Mapping相关文件》有提到，这里就不再给出。

UserController.java

 package lcw.controller;

 import lcw.model.User;
 import lcw.service.UserServiceI;

 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.RequestMapping;
 @Controller
 @RequestMapping("/userController")
 public class UserController {

     private UserServiceI userService;

     public UserServiceI getUserService() {
         return userService;
     }
     @Autowired
     public void setUserService(UserServiceI userService) {
         this.userService = userService;
     }

     @RequestMapping("/showUser")
     public String showUser(Model model){
         User user=userService.getUserById(1);
         model.addAttribute("user", user);
         return "showuser";
     }

 }

UserServiceI.java

 package lcw.service;

 import lcw.model.User;

 public interface UserServiceI {

     public User  getUserById(int id);

 }

UserService.java

package lcw.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import lcw.dao.UserMapper;
import lcw.model.User;

@Service("userService")
public class UserService implements UserServiceI {

    private UserMapper userMapper;

    public UserMapper getUserMapper() {
        return userMapper;
    }

    @Autowired
    public void setUserMapper(UserMapper userMapper) {
        this.userMapper = userMapper;
    }

    @Override
    public User getUserById(int id) {
        return userMapper.selectByPrimaryKey(id);

    }

}

showuser.jsp

 <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
     pageEncoding="ISO-8859-1"%>
 <!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=ISO-8859-1">
 <title>Insert title here</title>
 </head>
 <body>
     Hello ${user.password} !!
 </body>
 </html>

web.xml

 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
     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">

     <!-- 解决工程编码过滤器 -->
     <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>

     <!-- SpringMVC配置 -->
     <servlet>
         <servlet-name>springDispatcherServlet</servlet-name>
         <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
         <init-param>
             <param-name>contextConfigLocation</param-name>
             <param-value>classpath:springmvc.xml</param-value>
         </init-param>
         <load-on-startup>1</load-on-startup>
     </servlet>

     <servlet-mapping>
         <servlet-name>springDispatcherServlet</servlet-name>
         <url-pattern>/</url-pattern>
     </servlet-mapping>

     <!-- 配置文件所在位置 -->
     <context-param>
         <param-name>contextConfigLocation</param-name>
         <param-value>classpath:spring.xml,classpath:mybatis-spring.xml</param-value>
     </context-param>
     <!-- Spring配置（监听器） -->
     <listener>
         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     </listener>

 </web-app>

看下效果图：

好了，SpringMVC+Mybtis+Druid完美整合~

作者：Balla_兔子
出处：http://www.cnblogs.com/lichenwei/
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