记一次springboot打war包出现No Spring WebApplicationInitializer types detected on classpath问题

一、场景

由于现场环境及其它要求，需要将springboot项目达成war包部署。且打包时已排除springboot内嵌的tomcat，但部署时仍然出现No Spring WebApplicationInitializer types detected on classpat。

二、解决

推测是因为springboot项目打成war包后webinfo的问题
我是在SpringbootApplication启动类上继承SpringBootServletInitializer，并覆写configure方法解决的；

@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class })
@MapperScan("com.bcp.bcpnotice.mapper")
public class NoticeApplication extends SpringBootServletInitializer {

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

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(NoticeApplication.class);
    }

}