SpringMVC基本

不念不忘少年蓝@ 2022-06-02 07:54 197阅读 0赞

工程结构：

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web.xml：

<?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"    
        version="3.0">    
        <display-name>Archetype Created Web Application</display-name>    
     	
     	<servlet>
     		<servlet-name>springDispatcherServlet</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>springDispatcherServlet</servlet-name>
     	<url-pattern>/</url-pattern>
     	</servlet-mapping>
        
    </web-app>

springmvc.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"    
        xmlns:mvc="http://www.springframework.org/schema/mvc"    
        xsi:schemaLocation="http://www.springframework.org/schema/beans      
                            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd      
                            http://www.springframework.org/schema/context      
                            http://www.springframework.org/schema/context/spring-context-3.1.xsd      
                            http://www.springframework.org/schema/mvc      
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">    
        
        <context:component-scan base-package="com.xm.handlers"></context:component-scan>  
              
        <bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
        </bean>
     </beans>

HelloWorld.java:

package com.xm.handlers;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    /**
     * 
    * @ClassName: HelloWorld 
    * @Description: Controller 实例
    * @author xiaomu 
    * @date 2018年1月8日 下午7:15:05 
    *
     */
    @Controller
    public class HelloWorld {
    	/**
    	 * 
    	* @Title: hello 
    	* @Description: 使用requestMapping注解映射请求'
    	* 2、返回值 会通过视图解析器解析为物理视图，对于InternalResourceViewResolver 视图解析器，会做如下的解析
    	* prefix + returnVal + 后缀 这样的 方式得到实际的物理试图，然后做转发操作  （注意是转发，不是重定向)
    	* @param @return    设定文件 
    	* @return String    返回类型 
    	* @throws
    	 */
    	@RequestMapping(value="/helloworld")
    	public String hello() {
    		System.out.println("hello wordld");
    		return "success";
    	}
    }

success.jsp:

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>Insert title here</title>
    </head>
    <body>
    this is success
    </body>
    </html>

[Center]: /images/20220602/4cd92cb1ba974cc7904d59725d5bf968.png