啟動類代碼

package com.maven.demo;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
 
import org.springframework.transaction.annotation.EnableTransactionManagement;

@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan("com.maven.demo")
@MapperScan("com.maven.demo")
@EnableTransactionManagement
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.
 
class, args);
    }
}

發現路徑都是對的，但是就是掃描不到controller層

原因是maven多模塊項目忘記引入子模塊的maven依賴了，啟動類是一個子模塊，controller的代碼是另外一個子模塊，低級錯誤。

spring boot包掃描不到controller層