Spring MVC的第一个简单程序

╰+攻爆jí腚メ 2023-05-31 07:23 23阅读 0赞

web.xml文件，放在WEB-INF目录下。

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                          http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    	version="3.1" metadata-complete="true">
    
    	<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:springmvc-config.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>
    </web-app>

spring-config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"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans.xsd">
    
    	
    	<bean name="/firstController"
    		class="com.student.controller.FirstController"></bean>
    	
    	<bean
    		class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"></bean>
    	
    	<bean
    		class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"></bean>
    	
    	<bean
    		class="org.springframework.web.servlet.view.InternalResourceViewResolver"></bean>
    </beans>

测试类FirstController：

package com.student.controller;
    
    import org.springframework.web.servlet.ModelAndView;
    import org.springframework.web.servlet.mvc.Controller;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    
    public class FirstController implements Controller {
        
    
    	@Override
    	public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
        
    		ModelAndView modelAndView = new ModelAndView();
    		modelAndView.addObject("msg", " 这是善文爸爸的第一个MVC程序！！ ");
    		modelAndView.setViewName("/WEB-INF/jsp/first.jsp");
    		return modelAndView;
    	}
    }

first.jsp文件

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>MVC入门程序</title>
    </head>
    <body>
    	${
        msg} 
    </body>
    </html>

运行结果：  
![在这里插入图片描述][20191023204335959.png]

[20191023204335959.png]: /images/20230531/0e499b1726b741838d7a29019491bd34.png