springboot 打包後放在Tomcat後加上項目名後訪問仍然報錯404

啓動類需要繼承SpringBootServletInitializer

@SpringBootApplication
@MapperScan(value = "com.dxl.system.mapper")
public class MdnoteApplication extends SpringBootServletInitializer {

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

}