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Java后台-Spring MVC Hello World-2020-12-22

朱小落 2021-09-24 阅读 24
Java后台
  • HelloController.java 文件的内容:
package com.tutorialspoint;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.ui.ModelMap;

@Controller

@RequestMapping("/hello")

public class HelloController{ 

   @RequestMapping(method = RequestMethod.GET)

   public String printHello(ModelMap model) {

      model.addAttribute("message", "Hello Spring MVC Framework!");

      return "hello";

   }

}
  • 配置文件 web.xml 的内容:
<web-app id="WebApp_ID" 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">
 
   <display-name>Spring MVC Application</display-name>
 
   <servlet>
      <servlet-name>HelloWeb</servlet-name>
      <servlet-class>
         org.springframework.web.servlet.DispatcherServlet
      </servlet-class>
      <load-on-startup>1</load-on-startup>
   </servlet>
 
   <servlet-mapping>
      <servlet-name>HelloWeb</servlet-name>
      <url-pattern>/</url-pattern>
   </servlet-mapping>
</web-app>
  • 配置文件 HelloWeb-servlet.xml 的内容:
<beans xmlns="http://www.springframework.org/schema/beans"

   xmlns:context="http://www.springframework.org/schema/context"

   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-3.0.xsd

   http://www.springframework.org/schema/context 

   http://www.springframework.org/schema/context/spring-context-3.0.xsd">

 

   <context:component-scan base-package="com.tutorialspoint" />

 

   <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

      <property name="prefix" value="/WEB-INF/jsp/" />

      <property name="suffix" value=".jsp" />

   </bean>

</beans>
  • 视图文件 hello.jsp 的内容:
<%@ page contentType="text/html; charset=UTF-8" %>

<html>

<head>

<title>Hello World</title>

</head>

<body>

   <h2>${message}</h2>

</body>

</html>

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