springmvc demo

springmvc demo 配置文件

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>
     
<servlet>   
    <servlet-name>spring</servlet-name>   
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!--<init-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>classpath*:/spring-servlet.xml</param-value>  
       </init-param> 
     -->
    <load-on-startup>1</load-on-startup>   
</servlet>   
<servlet-mapping>   
    <servlet-name>spring</servlet-name>   <!-- 默认spring-mvc配置文件加载：WEB-INF/spring-servlet.xml  [servlet-name]-servlet.xml  -->
    <url-pattern>/</url-pattern>   
</servlet-mapping>  
  
</web-app>

2.WEB-INF/spring-servlet.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"
 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">
   
 <!-- 1.组件扫描：定义扫描根路径为com.org.momo 使用注解匹配-->  
<context:component-scan base-package="com.org.momo" />
   
 <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
  <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
  <property name="prefix" value="/WEB-INF/jsp/" />
  <property name="suffix" value=".jsp" />
 </bean>
 
 <!-- 2.处理器 -->
 <!--  <bean name="/hello" class="com.org.momo.HelloController"/> -->
 
</beans>

3. com.org.momo.HelloController

package com.org.momo;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
//import org.springframework.web.servlet.mvc.Controller;
 @Controller
 public class HelloController  {
@RequestMapping("/hello")
    public ModelAndView handleRequest(HttpServletRequest req, HttpServletResponse resp) throws Exception {
       //1、收集参数、验证参数
       //2、绑定参数到命令对象
       //3、将命令对象传入业务对象进行业务处理
       //4、选择下一个页面
       ModelAndView mv = new ModelAndView();
       //添加模型数据 可以是任意的POJO对象
       mv.addObject("message", "Hello springmvc world!");
       //设置逻辑视图名，视图解析器会根据该名字解析到具体的视图页面
       mv.setViewName("hello");
       return mv;
    }
}

4.浏览器URL：  http://localhost:8080/024_SpringMVC/hello.asdfghjkl;
回去跳转到,但是浏览器地址栏不变：WEB-INF/jsp/hello.jsp
    hello.jsp显示：  Hello springmvc world !!