SpringMVC第一个例子，静态资源过滤的三种方式

1. web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 
	xmlns="http://java.sun.com/xml/ns/j2ee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
	http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <!-- 中央控制器 -->
  <!-- 配控制器时，一定要导入commons-logging包，否则tomcat启动时出现Failed to start component -->
  <servlet>
  	<servlet-name>springMVC</servlet-name>
  	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  	<load-on-startup>0</load-on-startup> 
  </servlet> 
  <servlet-mapping>
  	<servlet-name>springMVC</servlet-name>
  	<url-pattern>/</url-pattern><!-- /*拦截所有  /除了jsp都拦截 -->
  </servlet-mapping>
  <!-- 过滤静态资源，方式一：不拦截html文件 --><!--
  <servlet-mapping>
	<servlet-name>default</servlet-name>
	<url-pattern>*.html</url-pattern>
  </servlet-mapping>-->
</web-app>

2. springMVC-servlet

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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-3.2.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
">


<!-- 映射 -->
<bean name="/hello.do" class="com.controller.HelloController"></bean>
<bean name="/hello2.do" class="com.controller.HelloController2"></bean>

<!-- 过滤静态资源方式2：我个人觉得方式2最好，所有后缀的静态资源都放行了 -->
<!--<mvc:default-servlet-handler/>

--><!-- 过滤静态资源方式3： -->
<mvc:resources location="/" mapping="*.html"/>


</beans>

3. HelloController.java

package com.controller;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.HttpRequestHandler;

public class HelloController implements HttpRequestHandler {
	@Override
	public void handleRequest(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		System.out.println("请求过来了");
		resp.sendRedirect("index.jsp");
		
	}
	
}

4. HelloController2.java

package com.controller;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.Controller;

public class HelloController2 implements Controller {

	@Override
	public ModelAndView handleRequest(HttpServletRequest req,
			HttpServletResponse resp) throws Exception {
		ModelAndView mv = new ModelAndView();
		//将数据和视图一起封装并返回
		mv.setViewName("index.jsp");
		mv.addObject("name", "bwf");
		return mv;
	}

}