springmvc-servlet.xml文件配置，方法一

spring-servlet.xml

IndexController

package hao.web;

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

@Controller
public class IndexController {

    @RequestMapping("/index")
    private String index(){
        return "index";
    }
}

依赖jar包

    
      org.springframework
      spring-webmvc
      5.0.9.RELEASE
    

注意该文件一定要放在WEB-INF目录下，而且名字不能改变