springboot将jar包改成war包

<!--<packaging>jar</packaging>-->
<packaging>war</packaging>

1. 添加Spring Boot 的tomcat依赖
<!--添加tomcat-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

2. 添加servlet依赖
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.0.1</version>
    <scope>provided</scope>
</dependency>

继承SpringBootServletInitializer，重写configure()方法

protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
	return application.sources(DatacenterApplication.class);
}

然后使用 mvn package 打包命令进行打包