Mybatis基础入门（四）——与springMVC的集成

时间：2015-08-12 01:32:17 阅读：219 评论：0 收藏：0 [点我收藏+]

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前面的增删改查还没有融入到一个web项目中，这里在前面的基础上，集成spring管理相关的bean，并在web层集成springmvc。同样会有源码的下载。

一、目录结构：

技术分享

二、集成spring：

因为是一个web项目，且使用了spring作为粘合剂，相关的jar包就不多解释了，详见源码。项目上篇文章中的结构，这里把映射文件单独放到一个目录，而且添加了Controller的包，映射文件内容不变。注意到这里讲其他配置文件整合到了config包中。因为使用spring，所以Configuration.xml中的数据连接就移动到了applicationContext.xml文件中，当然可以独立到database.properties文件中。

spring管理的事务、Mybatis的sqlSessionFactoryBean，以及项目要扫描的Mybatis的映射文件包路径属性，数据源等都在applicationContext.xml文件中：

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<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"
default-autowire="byName" default-lazy-init="false">
<context:property-placeholder location="classpath:/config/database.properties" />
<!-- <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="com.mysql.jdbc.Driver"
p:url="jdbc:mysql://127.0.0.1:3306/mybatis?characterEncoding=utf8"
p:username="root"
p:password="123"
p:maxActive="10"
p:maxIdle="10">
</bean> -->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:config/Configuration.xml" />
<property name="mapperLocations" value="classpath*:com/tgb/mybatis/mapper/*.xml" />
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.tgb.mybatis.inter" />
</bean>
</beans>

三、集成springMVC：

相关的jar包参见源码，springMVC充当了web端的框架，mvc-dispatcher-servlet.xml和web.xml中是相关的配置。

mvc-dispatcher-servlet.xml：

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<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" 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
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">
<context:component-scan base-package="com.tgb.controller" />
<mvc:annotation-driven />
<mvc:resources mapping="/static/**" location="/WEB-INF/static/"/>
<mvc:default-servlet-handler/>
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>

web.xml：

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<?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" 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">
<display-name>MyBatis_Spring_MVC</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<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>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:config/applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>
org.springframework.web.context.ContextCleanupListener</listener-class>
</listener>
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>

web.xml中的启动顺序是：context-param—》listener—》filter—》servlet，如果servlet配置了load-on-startup参数（非负整数，含0，且越小越优先启动）才会在服务器启动的时候加载到内存。

控制层：

UserController，相当于struts中的action，因为使用注解，省去了像struts中的一堆的配置，个人感觉这样对开发和维护都很方便：

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@Controller
@RequestMapping("/article")
public class UserController {
@Autowired
IUserOperation userMapper;
@RequestMapping("/list")
public ModelAndView listall(HttpServletRequest request,HttpServletResponse response){
List<Article> articles=userMapper.getUserArticles(1);
ModelAndView mav=new ModelAndView("list");
mav.addObject("articles",articles);
return mav;
}
}