SpringMVC的HelloWorld实现

Dear 丶 2022-09-24 13:25 117阅读 0赞

1.首先我们需要新建一个webapp项目，在pom.xml中引入相关依赖：

<dependency>
    			<groupId>junit</groupId>
    			<artifactId>junit</artifactId>
    			<version>4.12</version>
    			<scope>test</scope>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context</artifactId>
    			<version>4.1.6.RELEASE</version>
    		</dependency>
    
    		
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>4.1.6.RELEASE</version>
    		</dependency>

2.在web.xml中配置DispatcherServlet:

<servlet>
    		<servlet-name>mvc-dispatcher</servlet-name>
    		<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    		<init-param>
    			<param-name>contextConfigLocation</param-name>
    			<param-value>classpath:springmvc.xml</param-value>
    		</init-param>
    		<load-on-startup>1</load-on-startup>
    	</servlet>
    
    	
    	<servlet-mapping>
    		<servlet-name>mvc-dispatcher</servlet-name>
    		<url-pattern>/</url-pattern>
    	</servlet-mapping>

3.引入springmvc.xml文件，文件名字随意，但是要与上面web.xml中配置的classpath名字相同

<?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"
    	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/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">
    
    	
    	<context:component-scan base-package="com.yc" />
    
    	
    	<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    		<property name="prefix" value="/views/" />
    		<property name="suffix" value=".jsp" />
    	</bean>
    </beans>

4.发出请求

<a href="mvc/hello">Hello</a>

5.编写请求处理类Controller

package com.yc.controllers;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller //标识为请求处理类
    @RequestMapping("/mvc") //拦截/mvc的请求
    public class HelloController {
    	
    	@RequestMapping("/hello") //拦截/hello的请求
    	public String hello(){
    		return "show"; //跳转到show.jsp页面
    	}
    }

6.运行结果

![20160801164357006][]

![20160801164409913][]

[20160801164357006]: /images/20220719/4d35d647a41b4d9089d85c4cb90ea7c4.png
[20160801164409913]: /images/20220719/9dbdad78f59e45759f19d79759263df4.png