spring mvc 一个controlller对应一个请求

最新推荐文章于 2023-03-14 20:51:37 发布

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最新推荐文章于 2023-03-14 20:51:37 发布

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分类专栏： springMVC 文章标签： spring mvc spring

本文链接：https://blog.youkuaiyun.com/responsecool/article/details/38825507

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该博客介绍了如何在Spring MVC中配置一个Controller来专门处理一个特定的HTTP请求。通过web.xml和主配置文件的设置，展示了DispatcherServlet的配置以及Controller的实现方式，使得请求能正确映射到独立的处理方法上。

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spring mvc 一个controlller对应一个请求

***************web.xml代码***************
<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>springmvc002</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <servlet>
  	<servlet-name>springmvc002-servlet</servlet-name>
  	<servlet-class>
		  		org.springframework.web.servlet.DispatcherServlet
  	</servlet-class>
  	<init-param>
  		<param-name>contextConfigLocation</param-name>
  		<param-value>classpath:*.xml</param-value>
  	</init-param>
  	<load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
  	<servlet-name>springmvc002-servlet</servlet-name>
	<url-pattern>/</url-pattern>  	
  </servlet-mapping>
</web-app>


***************Java代码***************
package com.springmvc002.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 IndependentController implements Controller {  //这里必须实现该接口

	@Override
	public ModelAndView handleRequest(HttpServletRequest request,
			HttpServletResponse response) throws Exception {
		System.out.println("--------independent-------");
		//这里请结合下面的主配置文件查阅，尤其是第一个参数和主配置中的InternalResourceViewResolver类
		//简单来讲究是掐头去尾的拼接字符串
		return new ModelAndView("independent", "independent", request.getParameter("username"));
	}

}


***************spring mvc 主配置文件代码***************

<?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:tx="http://www.springframework.org/schema/tx"
	xmlns:context="http://www.springframework.org/schema/context"  
	xmlns:mvc="http://www.springframework.org/schema/mvc"  
	xsi:schemaLocation="http://www.springframework.org/schema/beans 
	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
	http://www.springframework.org/schema/tx 
	http://www.springframework.org/schema/tx/spring-tx-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">
    
	
    <bean name="/independent" class="com.springmvc002.controller.IndependentController"></bean>
    
	<!--这里是掐头去尾的拼接字符串-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    	<property name="prefix" value="/"></property>
    	<property name="suffix" value=".jsp"></property>
    </bean>
</beans>


***************jsp代码***************
请求页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">    
    <title>标题</title>        
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">    
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
 </head>
 <body>
 <div style="text-align:center;">
 	<br>
 	<br>
 	<br>
		<form action="independent">
			<fieldset>
				<legend>表单提交测试</legend>
				<input type="text" name="username">
				<input type="submit" value="提交测试数据">
			</fieldset>
		</form>

 	</div>
 </body>
</html>


结果页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">    
    <title>标题</title>        
  <meta http-equiv="pragma" content="no-cache">
  <meta http-equiv="cache-control" content="no-cache">
  <meta http-equiv="expires" content="0">    
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="This is my page">
 </head>
 <body>
 	<h2>
 	${independent }
 	</h2>
 </body>
</html>