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  • No mapping found for HTTP request with URI [/HelloWeb/] in DispatcherServlet with name 'HelloWeb' Spring MVC

    I'm learning the Spring Framework, and I'm doing the HelloWeb tutorial on tutorialspoint, and I can't get it working. I'm using Spring MVC 4.0, and I'm deploying my app from Netbeans 8.0 to a Glassfish Server. http://www.tutorialspoint.com/spring/spring_mvc_hello_world_example.htm

    I looked for similar problems here on this site and on other sites as well, but the suggested solutions didn't work for me. I would really appreciate some help, because I'm pretty sure I'm missing something basic here.

    Here are my relevant files:

    web.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app version="3.1" 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">
    
    <display-name>Spring MVC Application</display-name>
    
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/HelloWeb-servlet.xml</param-value>
    </context-param>
    
    <listener>
        <listener-class>
            org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
    <servlet>
        <servlet-name>HelloWeb</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>HelloWeb</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    </web-app>
    

    HelloWeb-servlet.xml

    <?xml version='1.0' encoding='UTF-8' ?>
    <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-4.0.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/mvc
    http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    <context:component-scan base-package="com.tutorialspoint" />
    
    <bean id="viewResolver"  class=
    "org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp" />
    </bean>
    
    </beans>
    

    hello.jsp

    <%@ page contentType="text/html; charset=UTF-8" %>
    <html>
    <head>
    <title>Hello World</title>
    </head>
    <body>
    <h2>${message}</h2>
    </body>
    </html>
    

    HelloController.java

    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";
       }
    
    }

    You have a single controller in your app, mapped to /hello (that's what @RequestMapping("/hello")means). The URL for that controller is thus http://localhost:8080/HelloWeb/hello.

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  • 原文地址:https://www.cnblogs.com/softidea/p/5562442.html
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