1. 主程序继承SpringBootServletInitializer，并重写configure方法
2. POM文件，打包为jar改为打包为war。<packaging>war</packaging>
3. 内嵌的Servlet容器scope改为provided。<scope>provided</scope>
结果：war包即可以放在Servlet容器，比如tomcat的webapps下面运行，也可以通过jar -jar demo.war的方式运行
@SpringBootApplication public class DemoApplication extends SpringBootServletInitializer{ @Override protected SpringApplicationBuilder configure(SpringApplicationBuilder application) { return application.sources(DemoApplication.class); } public static void main(String[] args) { SpringApplication.run(DemoApplication.class, args); } } -------------------------------------------------------------------------- <groupId>com.hepengju</groupId> <artifactId>demo</artifactId> <version>0.0.1</version> <packaging>war</packaging> -------------------------------------------------------------------------- <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> <scope>provided</scope> </dependency>
原文：https://www.cnblogs.com/hepengju/p/12247000.html