SpringMVC HTTP 状态 404 -

Question

我开始学习 Spring MVC，但是当我运行我的程序时，我收到以下错误：

HTTP 状态 404 - 类型状态报告 信息 描述 请求的资源不可用。 Apache Tomcat/8.0.41

web.xml：

<?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>

springmvc-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: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";
    }
}

我的项目结构如下：

我使用 IntelliJ IDEA 来运行这个过程。 IntelliJ IDEA 会是我遇到错误的原因吗？

Answer 1

请更改<context:component-scan base-package="com"/>和<mvc:annotation-driven/>之间的顺序，使<mvc:annotation-driven/>成为第一个

您正在尝试访问${ContextPath}/home/home，请尝试用以下代码替换您的控制器：

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