Spring MVC的配置文件(XML)的几个经典案列

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1.既然是配置文件版的,那配置文件自然是必不可少,且应该会很复杂,那我们就以一个一个的来慢慢分析这些个经典案列吧!

01.实现Controller

/*
* 控制器
*/
public class MyController implements Controller{ /*
* 返回视图
* (non-Javadoc)
* @see org.springframework.web.servlet.mvc.Controller#handleRequest(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
*/
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws Exception {
ModelAndView mv=new ModelAndView();
mv.addObject("msg", "happy");
mv.setViewName("jd");
return mv;
}}

<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location" value="classpath:MyView.xml"></property>
</bean> <bean id="/hello.do" class="cn.happy.controller.MyController"></bean>

外部配置文件

<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 
<bean id="jd" class="org.springframework.web.servlet.view.RedirectView">
<property name="url" value="http://www.jd.com"></property>
</bean> 
<bean id="internal" class="org.springframework.web.servlet.view.JstlView">
<property name="url" value="/WEB-INFO/jsp/happy.jsp"></property>
</bean></beans>

02.处理配置为"/"解决的三种方法

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

01.web.xml配置文件中书写

<servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.JPG</url-pattern>
</servlet-mapping> <servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.png</url-pattern>
</servlet-mapping> <servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.css</url-pattern>
</servlet-mapping> <servlet-mapping>
<servlet-name>default</servlet-name>
<url-pattern>*.js</url-pattern>
</servlet-mapping>

ApplicationContext.xml文件中

03.继承AbstractController

跟模版方法很相似,在handleRequest的方法基础上新添加自己的handleRequestInternal方法

public class MyAbstract extends AbstractController{

@Override
protected ModelAndView handleRequestInternal(
HttpServletRequest httpservletrequest,
HttpServletResponse httpservletresponse) throws Exception {
ModelAndView mv=new ModelAndView();
mv.addObject("msg", "明天放假一天，不上课");
//处理一道
mv.setViewName("WEB-INF/jsp/happy.jsp");
return mv;
}

}

并且可以控制请求的方式、例如post或者get等

04.继承MultiActionController(可以创建多个方法)

public class MyMutilAction extends MultiActionController{ public ModelAndView doFirst(HttpServletRequest request,
HttpServletResponse response) throws Exception { ModelAndView mv=new ModelAndView();
mv.addObject("msg", "我是doFrist");//reqeuset.setAttribute("key","value");
mv.setViewName("WEB-INF/jsp/happy.jsp");
return mv;
} public ModelAndView doSecond(HttpServletRequest request,
HttpServletResponse response) throws Exception { ModelAndView mv=new ModelAndView();
mv.addObject("msg", "我是doSecond");
mv.setViewName("WEB-INF/jsp/happy.jsp");
return mv;
}
}

可以自定义出外界访问的*.do