Springboot項目啟動后訪問不到Controller

1、問題描述

　　搭建一個簡單的Springboot項目，最開始將啟動類main函數與controller放到一個類里，可以正常啟動和訪問，但是將兩個分開再啟動時訪問就會報錯：This application has no explicit mapping for /error, so you are seeing this as a fallback.

　　

2、解決方案

　　在main函數啟動類上加注解：@SpringBootApplication(scanBasePackages = "com") 問題即可解決。

  package com.mao2080;   import org.springframework.boot.SpringApplication;  import org.springframework.boot.autoconfigure.EnableAutoConfiguration;  import org.springframework.boot.autoconfigure.SpringBootApplication;   @SpringBootApplication(scanBasePackages = "com")  @EnableAutoConfiguration  public class Application {   public static void main(String[] args) throws Exception {  SpringApplication.run(Application.class, args);   }   }