HTTP狀態404 -

Question

我開始學習Spring MVC的，但是當我運行我的程序，我收到以下錯誤：

HTTP Status 404 - type Status report message description The requested resource is not available. Apache Tomcat/8.0.41

web.xml中：

<?xml version="1.0" encoding="UTF-8"?> 
<web-app 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" 
     version="3.1"> 
    <context-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value>/WEB-INF/applicationContext.xml</param-value> 
    </context-param> 
    <listener> 
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
    </listener> 
    <servlet> 
     <servlet-name>springmvc</servlet-name> 
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
     <init-param> 
      <param-name>contextConfigLocation</param-name> 
      <param-value>/WEB-INF/springmvc-servlet.xml</param-value> 
     </init-param> 
     <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
     <servlet-name>springmvc</servlet-name> 
     <url-pattern>/</url-pattern> 
    </servlet-mapping> 
</web-app> 

用SpringMVC-servlet.xml中：

<?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: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.xsd 
     http://www.springframework.org/schema/context 
     http://www.springframework.org/schema/context/spring-context.xsd 
     http://www.springframework.org/schema/mvc 
     http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
     http://www.springframework.org/schema/cache 
     http://www.springframework.org/schema/cache/spring-cache.xsd"> 

    <context:component-scan base-package="com"/> 
    <mvc:annotation-driven/> 
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
     <property name="prefix" value="/WEB-INF/view/"/> 
     <property name="suffix" value=".jsp"/> 
    </bean> 
</beans> 

SpringTest.java：

package com; 

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

@Controller 
@RequestMapping("/home") 
public class SpringTest { 
    @RequestMapping(value = "/home",method =RequestMethod.GET) 
    public String home(){ 
     return "home"; 
    } 
} 

我項目結構如下：

我用的IntelliJ IDEA來運行這個程序。 IntelliJ IDEA會成爲我收到錯誤的原因嗎？

Answer 1

請改變<context:component-scan base-package="com"/>和<mvc:annotation-driven/>之間的順序使<mvc:annotation-driven/>第一

您試圖訪問${ContextPath}/home/home，請嘗試以下通過代碼來替換你的控制器：

@Controller 
public class SpringTest { 
    @RequestMapping(value = "/home",method =RequestMethod.GET) 
    public String home(){ 
     return "home"; 
    } 
}