SpringMVC Helloworld注解和404问题

　　最近学习的SpringＭＶＣ刚开始用普通配置，一切正常。复制项目变为注解形式的时候一直报４０４错误，非常头疼，确定自己所有配置都是正确之后还是４０４，于是新建项目，一切都变正常，可能是复制项目出现了问题，可是修改了项目的根目录还是４０４的，具体问题不得知，遇到４０４的朋友们也要注意。以下是Ｈｅｌｌｏｗｏｒｌｄ的示例：

项目目录结构：

记得导入相应的ｊａｒ包，切记不要忘了ｃｏｍｍｍｏｎ－ｌｏｇｇｉｎｇ包，否则运行报错。

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.jsp</welcome-file>  </welcome-file-list>   <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"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.2.xsdhttp://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.2.xsd"><context:component-scan base-package="org.fkit.controller"/><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix"><value>/WEB-INF/content/</value></property><property name="suffix"><value>.jsp</value></property></bean><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/><bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/></beans>

ＨｅｌｌｏＣｏｎｔｒｏｌｌｅｒ类

package org.fkit.controller;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class HelloController {@RequestMapping(value="/hello")public String hello(Model model){model.addAttribute("message","Hello Annotation");return "hello"; }}

自己新建一个ｈｅｌｌｏ．ｊｓｐ页面
运行ｔｏｍｃａｔ输入ｈｔｔｐ：／／ｌｏｃａｌｈｏｓｔ：８０８０／Ａｎｎｏｔａｔｉｏｎ／ｈｅｌｌｏ即可。