SpringBoot playing WAR deployment package

1. First embodiment replaced by a default packaged as war jar, jar is opened pom modified war

2. Add the following dependencies in pom.xml file

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
 </dependency>

3. Change the code in the startup class DemoApplication (Add Inherited SpringBootServletInitializer, and override the configure method)

@SpringBootApplication
public class DemoApplication extends SpringBootServletInitializer {
 
   public static void main(String[] args) {
      SpringApplication.run(DemoApplication.class, args);
   }
 
   @Override
   protected SpringApplicationBuilder configure(SpringApplicationBuilder application){
      System.out.println("外部tomcat,chapter启动!");
      return application.sources(DemoApplication.class);
   }
 
}

二、打包发布和测试。


遇到的问题：
1、部署部成功，网上找原因说是由于jar包的问题，各种排查也无法解决。
最终升级了springboot的版本为2.2.2，问题得以解决。