把spring boot项目编译成war

修改启动类

改成继承org.springframework.boot.web.servlet.support.SpringBootServletInitializer, 例如：

package cn.devmgr.tutorial;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class Application extends SpringBootServletInitializer{

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

修改pom文件

改packaging方式为war

<packaging>war</packaging>

改依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-rest</artifactId>
           <!-- 排除掉内嵌的tomcat，为了减少war体积，也为了避免和tomcat服务器冲突 -->
    <exclusions>
        <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
    </exclusions>
</dependency>

<!-- 去掉了内嵌的tomcat后，需要增加servlet-api，否则编译会出错了 -->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <scope>provided</scope>
</dependency>

注意事项

spring boot 2.0项目需要在tomcat 8.5以上版本环境下运行