[SPRING] org.springframework.web.servlet.DispatcherServlet noHandlerFound, URI가있는 HTTP 요청에 대한 매핑이 없습니다. [duplicate]

org.springframework.web.servlet.DispatcherServlet noHandlerFound, URI가있는 HTTP 요청에 대한 매핑이 없습니다. [duplicate]

열려고 할 때 / 페이지, 나는 그 오류가 나타납니다 :

뭐가 문제 야?

을 포함한다.

<web-app>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>WEB-INF/app-context.xml</param-value>
    </context-param>
    <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></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>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

WEB-INF / app-context.xml

<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="controller"/>
    <context:annotation-config/>
    <bean id="mvc-dispatcher" class="controller.Home"/>

</beans>

컨트롤러 / Home.java

package controller;

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

@Controller
public class Home {
    String message = "Welcome to your 1st Maven Spring project !";

    @RequestMapping("/")
    public String simple1() {
        return "simple";
    }
}

해결법

1. ==============================

   1.사용한 예제 :

   사용한 예제 :

   WEB-INF / web.xml을

   <?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">
       <servlet>
           <servlet-name>dispatcher</servlet-name>
           <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
           <load-on-startup>2</load-on-startup>
       </servlet>
       <servlet-mapping>
           <servlet-name>dispatcher</servlet-name>
           <url-pattern>/</url-pattern>
       </servlet-mapping>
   </web-app>
   

   WEB-INF / dispatcher-servlet.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:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx"
     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/aop
       http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
               http://www.springframework.org/schema/context
               http://www.springframework.org/schema/context/spring-context.xsd
       ">
   
       <context:component-scan base-package="controller"/>
   
       <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
           <property name="prefix" value="/WEB-INF/jsp/"></property>
           <property name="suffix" value=".jsp"></property>
       </bean>
   </beans>
   

   WEB-INF / jsp / simple.jsp

   <%@ taglib uri="http://www.springframework.org/tags" prefix="spring" %>
   
   message is <b>${message}</b>
   

   컨트롤러 / Home.java

   package controller;
   
   import org.springframework.stereotype.Controller;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.servlet.ModelAndView;
   
   @Controller
   public class Home {
       @RequestMapping(value = "/")
       public ModelAndView simple2() {
           ModelAndView mav = new ModelAndView();
           mav.setViewName("simple");
   
           mav.addObject("message", "woohoooo1234");
           return mav;
       }
   }
   

from https://stackoverflow.com/questions/27419037/org-springframework-web-servlet-dispatcherservlet-nohandlerfound-no-mapping-fou by cc-by-sa and MIT license