Spring MVC:DispatcherServlet中没有名称为mvc-dispatcher的映射

我是Spring新手,当我尝试使用以下URL访问我的应用程序时,我收到错误消息 - DispatcherServlet中没有名称为mvc-dispatcher的映射

http://localhost:8090/springexample/helloWorld

1.web.xml

        mvc-dispatcher
        
            org.springframework.web.servlet.DispatcherServlet
        
        1
    

    
        mvc-dispatcher
        /
    

2.mvc - 调度 - servlet.xml中

    
        
            /WEB-INF/
        
        
            .jsp
        
    

3.HelloWorldController

package com.test;

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

@Controller
@RequestMapping("/helloWorld")
public class HelloWorldController {

        @RequestMapping(method = RequestMethod.GET)
        public String hello(ModelMap model) {

            model.addAttribute("name", "Hello World!");
            return "helloWorld";

        }

    }

4.pom.xml

  
            org.springframework
            spring-core
            ${spring.version}
        

        
            org.springframework
            spring-webmvc
            ${spring.version}
        
  

        4.0.2.RELEASE
    

提前致谢