【问题标题】:No mapping found for HTTP request with URI [/SpringMVC/] in DispatcherServlet with name 'SpringMVC'在名称为“SpringMVC”的 DispatcherServlet 中找不到具有 URI [/SpringMVC/] 的 HTTP 请求的映射
【发布时间】:2014-12-23 11:45:38
【问题描述】:

我的 SpringMVC 项目出现此错误。我必须在浏览器中手动添加完整路径才能运行代码,但无法直接运行。

     org.springframework.web.servlet.DispatcherServlet noHandlerFound
            WARNING: No mapping found for HTTP request with URI [/SpringMVC/] in DispatcherServlet  with name 'SpringMVC'

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" id="WebApp_ID" version="3.0">
            <display-name>SpringMVC</display-name>
            <welcome-file-list>
            <welcome-file>index.html</welcome-file>
            <welcome-file>index.htm</welcome-file>
            <welcome-file>index.jsp</welcome-file>
            <welcome-file>default.html</welcome-file>
            <welcome-file>default.htm</welcome-file>
            <welcome-file>default.jsp</welcome-file>
            </welcome-file-list>
            <servlet>
            <servlet-name>SpringMVC</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <load-on-startup>1</load-on-startup>
            </servlet>
            <servlet-mapping>
            <servlet-name>SpringMVC</servlet-name>
            <url-pattern>/</url-pattern>
            </servlet-mapping>
            </web-app>

springMVC-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-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.adept.springMVC"></context:component-scan>
            <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="suffix" value=".jsp"></property>

            </bean>

            </beans>

StudentControler.java:

            package com.adept.springMVC;

            import org.springframework.stereotype.Controller;
            import org.springframework.ui.ModelMap;
            import org.springframework.web.bind.annotation.ModelAttribute;
            import org.springframework.web.bind.annotation.RequestMapping;
            import org.springframework.web.bind.annotation.RequestMethod;
            import org.springframework.web.servlet.ModelAndView;
            @Controller
            public class StudentControler {
            @RequestMapping(value="/student1",method=RequestMethod.GET)
            public ModelAndView student1(){
            return new ModelAndView("student", "command", new Student());
            }
            @RequestMapping(value="/addStudent",method=RequestMethod.POST)
            public String addStudent(@ModelAttribute("springWeb1")Student stud,ModelMap map){
            map.addAttribute("name",stud.getName());
            map.addAttribute("id", stud.getId());
            map.addAttribute("dept", stud.getDept());
            return "result";
            }
           }

student.jsp:

            <%@ page language="java" contentType="text/html; charset=UTF-8"
            pageEncoding="UTF-8"%>
            <%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
            <!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=UTF-8">
            <title>Spring MVC</title>
            </head>
            <body>
            <h1>Student Information</h1>
            <form:form method="post" action="/SpringMVC/addStudent">
            <table>
            <tr>
            <td><form:label path="name">Name:</form:label></td>
            <td><form:input path="name" /></td>
            </tr>
            <tr>
            <td><form:label path="id">Id:</form:label></td>
            <td><form:input path="id" /></td>
            </tr>
            <tr>
            <td><form:label path="dept">Department:</form:label></td>
            <td><form:input path="dept" /></td>
            </tr>
            <tr>
            <td colspan="2">
            <input type="submit" value="Submit"/>
            </td>
            </tr>
            </table>  
            </form:form>

            </body>
            </html>

result.jsp:

            <%@ page language="java" contentType="text/html; charset=UTF-8"
            pageEncoding="UTF-8"%>
            <%@taglib uri="http://www.springframework.org/tags/form" prefix="form"%>
            <!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=UTF-8">
            <title>Output</title>
            </head>
            <body>
            <h1>Student Information</h1>
            <table>
            <tr>
            <td>Name:</td>
            <td>${name}</td>
            </tr>
            <tr>
            <td>Id:</td>
            <td>${id}</td>
            </tr>
            <tr>
            <td>Department:</td>
            <td>${dept}</td>
            </tr>
            </table>  
            </body>
            </html>

请告诉我如何解决这个问题。

【问题讨论】:

  • 你用什么网址来获取页面?
  • 定义“完整路径”和“直接运行”。
  • localhost:8080/SpringMVC/student1 ...实际上在运行项目后我得到localhost:8080/SpringMVC/.I必须在URL之后手动添加student1
  • 我不想手动定义完整路径
  • 显然,因为您独特的 GET 映射控制器方法已映射到 /student1。如果你想在/ 上显示一些东西,那么你需要一个映射到/ 的控制器方法

标签: spring-mvc


【解决方案1】:

将springMVC-servlet.xml改为大写S SpringMVC-servlet.xml

【讨论】:

    【解决方案2】:

    我认为您的应用程序上下文路径是“/”,而不是“SpringMVC”。你的请求 uri 不需要 "/SpringMVC" ,比如 "http://localhost:8080/student1"

    【讨论】:

      【解决方案3】:

      更改您的应用程序pom.xml

      
       <properties>
             <springframework.version>4.0.6.RELEASE</springframework.version>
        </properties>
      
       <!-- Spring -->
              <dependency>
                  <groupId>org.springframework</groupId>
                  <artifactId>spring-core</artifactId>
                  <version>${springframework.version}</version>
              </dependency>
              <dependency>
                  <groupId>org.springframework</groupId>
                  <artifactId>spring-web</artifactId>
                  <version>${springframework.version}</version>
              </dependency>
              <dependency>
                  <groupId>org.springframework</groupId>
                  <artifactId>spring-webmvc</artifactId>
                  <version>${springframework.version}</version>
              </dependency>
              <dependency>
                  <groupId>org.springframework</groupId>
                  <artifactId>spring-tx</artifactId>
                  <version>${springframework.version}</version>
              </dependency>
              <dependency>
                  <groupId>org.springframework</groupId>
                  <artifactId>spring-orm</artifactId>
                  <version>${springframework.version}</version>
              </dependency>
      
      

      【讨论】:

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