如何修复Tomcat错误：“描述：原始服务器找不到当前的表示形式...”

Question

我正在IntelliJ IDEA中开发Spring MVC项目。但是，当我尝试在tomcat9服务器（来自IntelliJ）上运行此应用程序时，tomcat显示错误： Description: The origin server did not find a current representation for the target resource or is not willing to disclose that one exists. 我知道这是非常普遍的问题。但是我发现的所有建议都无济于事。这是我的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_4_0.xsd"
         version="4.0">

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>
            <param-name>contextClass</param-name>
            <param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
        </init-param>

        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>com.CRM.config.WebConfig</param-value>
        </init-param>


        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

WebConfig.java：

package com.CRM.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Configuration
@EnableWebMvc
@ComponentScan("com.CRM.controller")
public class WebConfig {
    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver =
                new InternalResourceViewResolver();

        viewResolver.setPrefix("/WEB-INF/view/");
        viewResolver.setSuffix(".jsp");

        return viewResolver;
    }
}

CustomerController.java：

package com.CRM.controller;

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

@Controller
@RequestMapping("/customer")
public class CustomerController {
    @RequestMapping("/list")
    public String listCustomers() {
        return "list-customers";
    }
}

这是项目结构：

我应该怎么做？

我试图在tomcat 8上运行它，但是出现了同样的错误。我也尝试在xml文件中配置spring上下文，但是...得到了相同的错误！