Spring4.2+SpringMVC+Mybatis3.4的集成

                                                            Spring+SpringMVC+Mybatis的集成
一、 项目结构图如下：
 
此项目主要目的是在于集成，主要包括一下步骤：

1. Jar包的加入

2. Web.xml的配置

3. SpringMVC的配置文件的创建

4. Spring配置文件的创建

5. Model的建立

6. Controller的建立

7. Service的建立

8. Dao的建立
   

二、具体的详细步骤如下：
1. Jar包的加入，包括：spring、MyBatis、log、spring-mybatis、oracle。具体的jar包如下图所示，并简要的说明每个jar的作用。
 
2. 需要在Web.xml文件中配置每个框架的入口。如下所示：

<?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>ssm</display-name>  <!-- 初始化spring的配置文件 -->  <context-param>   <param-name>contextConfigLocation</param-name>   <param-value>classpath*:conf/beans.xml</param-value>  </context-param>  <listener>   <description>spring监听器</description>   <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <!-- 配置springmvc的入口 -->  <servlet>   <servlet-name>action</servlet-name>   <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  <init-param>   <param-name>contextConfigLocation</param-name>   <param-value>classpath*:conf/spring-mvc.xml</param-value>  </init-param>  <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>   <servlet-name>action</servlet-name>   <url-pattern>/</url-pattern>  </servlet-mapping><!—springMVC配置结束 -->  <!-- 拦截器,对每个请求处理字符编码为UTF-8 -->  <filter>   <filter-name>encodingFilter</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>encodingFilter</filter-name>   <url-pattern>/</url-pattern>  </filter-mapping><!-- 拦截器结束--></web-app>

首先说明一下Web.xml中配置项的执行过程： <context-param>  <listenser> <filter>  <servlet>
首先初始化Spring的bean工厂,通过加载beans.xml初始化，其次通过spring的listener来监听，再次当请求时拦截并编码为UTF-8，最后由DispatcherServlet处理并分发到controller上
3. springMVC的配置文件

<?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:p="http://www.springframework.org/schema/p"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/context        http://www.springframework.org/schema/context/spring-context.xsd        http://www.springframework.org/schema/mvc        http://www.springframework.org/schema/mvc/spring-mvc.xsd"><!-- 开启注解扫描 --><mvc:annotation-driven/><!--  annotation默认的方法映射适配器 ,下面两个就是  <mvc:annotation-driven/>-->    <!-- <bean id="handlerMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />    <bean id="handlerAdapter" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /> --><!-- 指定扫描包 --><context:component-scan base-package="com.sm.controller" /><!-- 配置视图处理 --><bean id="viewResolver"class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/view/" /><property name="suffix" value=".jsp" /></bean><!-- SpringMVC上传文件时，需要配置MultipartResolver处理器 --><bean id="multipartResolver"class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><property name="defaultEncoding" value="utf-8" /><property name="maxUploadSize" value="10485760000" /><property name="maxInMemorySize" value="40960" /></bean></beans>

4. spring的配置文件

<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:util="http://www.springframework.org/schema/util" 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/context        http://www.springframework.org/schema/context/spring-context.xsd  http://www.springframework.org/schema/util   http://www.springframework.org/schema/util/spring-util.xsd"> <context:annotation-config /> <!-- 扫描service,dao --> <context:component-scan base-package="com.sm">  <context:exclude-filter type="regex"   expression="com.sm.controller" /> </context:component-scan> <!-- ////////////////////////配置数据源///////////////////////// --> <!-- 把.properties文件引入xml文件中 --> <!-- 第一种方式,比较方便 --> <!-- <util:properties location="classpath*:conf/jdbc.properties" /> --> <!-- 第二中方式 --> <!-- <context:property-placeholder location="classpath*:conf/jdbc.properties"/> --> <!-- 第三种方式 ,稍复杂点 --> <bean id="propertyConfigurer"  class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">  <property name="locations" value="classpath*:conf/jdbc.properties" />  <!-- <property name="locations"> <list> <value>classpath*:conf/jdbc.properties</value>    </list> </property> --> </bean> <!-- 将Mybatis的DataSource,sessionFactory以及Transaction受控于Spring容器 --> <!-- 数据源有多种:1,dbcp class="" 2,c3p0, class="" 3,alibaba的Druid(德鲁伊)数据源 class="com.alibaba.druid.pool.DruidDataSource"   4,spring class="org.springframework.jdbc.datasource.DriverManagerDataSource" --> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">  <property name="driverClassName" value="${jdbc.driverClassName}" />  <property name="url" value="${jdbc.url}" />  <property name="username" value="${jdbc.username}" />  <property name="password" value="${jdbc.password}" />  <!-- 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" />  <!-- 连接池最大空闲 -->  <property name="maxIdle" 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="${validationQuery}" />  <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="mergeStat" /> </bean> <!-- ////////////配置Mybatis/////////////////////////////////// --> <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  <property name="dataSource" ref="dataSource" />  <!-- <property name="configLocation" value="classpath*:conf/sqlMapConfig.xml"    /> -->  <property name="mapperLocations">   <list>    <value>classpath*:conf/com/dao/mapper/*.map.xml</value>   </list>  </property> </bean> <!-- 配置扫描接口 --> <!-- <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> value指明接口所在的包中   <property name="basePackage" value="com.sm.dao" /> <property name="sessionFactory"   ref="sessionFactory" /> </bean> --></beans>

5. properties文件
jdbc.driverClassName=oracle.jdbc.OracleDriver
jdbc.url=jdbc:oracle:thin:@localhost:1521:orcl
jdbc.username=scott
jdbc.password=tiger
validationQuery=SELECT 1

6. model

package com.sm.controller;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import com.sm.model.User;import com.sm.service.UserService;@Controller@RequestMapping("/user")public class UserController {  private UserService userService; @Resource public void setUserService(UserService userService) {  this.userService = userService; } @RequestMapping("/add") public String addUser(User user){  userService.addUser(user);  return "success"; } @RequestMapping("/toAddUser") public String toAddUser(){  return "userAdd"; }}

7. service

package com.sm.service;import javax.annotation.Resource;import org.springframework.stereotype.Service;import com.sm.dao.UserDao;import com.sm.model.User;@Servicepublic class UserService { @Resource private UserDao userDao ; public void addUser(User user){  userDao.add(user); }}

8. dao

package com.sm.dao;import javax.annotation.Resource;import org.apache.ibatis.session.SqlSession;import org.apache.ibatis.session.SqlSessionFactory;import org.springframework.stereotype.Repository;import com.sm.model.User;@Repositorypublic class UserDao { @Resource private SqlSessionFactory sessionFactory ;  public void add(User user){  System.out.println("添加user"+user.getId()+"成功");  SqlSession session = sessionFactory.openSession();  session.insert("add", user); }}

访问：http://localhost：8080/ssm/user/toAddUser

 
最重要的环境的配置

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