SpringBoot打成war包

文档
https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-create-a-deployable-war-file

在启动类(即Application)中加入

@SpringBootApplication
public class Application extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

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

}

把pom文件中的package修改为war

<packaging>war</packaging>

将依赖spring-boot-starter-tomcat的scope修改为provided

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

允许maven的package插件生成war包

在部署的时候可能出现404问题是因为打包的java版本和服务器的java版本不一致, 将服务器的java版本和开发的java版本修改为一致即可.