spring boot2只能访问根目录其他页面都是404（大佬来看看）

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">

  <modelVersion>4.0.0</modelVersion>

  <groupId>com</groupId>

  <artifactId>lwx</artifactId>

  <packaging>war</packaging>

  <version>0.0.1-SNAPSHOT</version>

  <name>lwx Maven Webapp</name>

  <url>http://maven.apache.org</url>

	<parent>

		<groupId>org.springframework.boot</groupId>

		<artifactId>spring-boot-starter-parent</artifactId>

		<version>2.1.2.RELEASE</version>

		<relativePath/> <!-- lookup parent from repository -->

	</parent>

  <dependencies>

  	<dependency>

  		<groupId>org.springframework.boot</groupId>

  		<artifactId>spring-boot-starter-web</artifactId>

  		<version>2.0.0.RELEASE</version>

  	</dependency>

  	  <!--启动时启动内置tomcat-->

    <dependency>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-tomcat</artifactId>       

    </dependency>

    <!--对jsp支持  -->

    <dependency>

        <groupId>org.apache.tomcat.embed</groupId>

        <artifactId>tomcat-embed-jasper</artifactId>    

    </dependency>

  	<dependency>  

       <groupId>org.springframework.boot</groupId>  

       <artifactId>spring-boot-starter-websocket</artifactId>  

    </dependency> 

  	<dependency>

	   <groupId>org.springframework.boot</groupId>

	   <artifactId>spring-boot-starter-thymeleaf</artifactId>

	</dependency>

	<dependency>

	   <groupId>org.springframework.boot</groupId>

	   <artifactId>spring-boot-starter-test</artifactId>

	   <scope>test</scope>

	</dependency>

  </dependencies>

  <build>

    <finalName>lwx</finalName>

  </build>

</project>

package com.zy.controller;



import javax.servlet.http.HttpServletRequest;



import org.springframework.stereotype.Controller;

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

import org.springframework.web.servlet.ModelAndView;



import com.xx.entity.UsersCommand;



@Controller

@RequestMapping("/index")

public class TestController {

	@RequestMapping("/index")

	public String index() {

		return "index.html";

	}



	@RequestMapping("/sigup")

	public ModelAndView sigup(HttpServletRequest req) {

		ModelAndView mv = new ModelAndView();



		UsersCommand cmd = new UsersCommand("小明", 0, "admin@hlm.com", 1, "123456");



		req.getSession().setAttribute("user", cmd);

		mv.addObject("password", cmd.getPassword());

		mv.addObject("userName", cmd.getName());

		mv.setViewName("index.jsp");

		return mv;

	}

}

package com.xx.Run;



import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.EnableAutoConfiguration;

import org.springframework.boot.autoconfigure.SpringBootApplication;



@SpringBootApplication

@EnableAutoConfiguration

public class  App{

	public static void main(String[] args) {

		SpringApplication.run(App.class, args);

	}

}