SpringBoot番外篇之项目部署到外部Tomcat

springboot的优点就在于集成使用，约定优于配置。打war包部署外部tomcat了解即可。

1、打开pom文件，把打包格式设置为war

      <packaging>war</packaging>

2、在pom文件添加单独（spring-boot-starter-web中有依赖tomcat，可以不手动排除）的tomcat依赖

  <!--外置tomcat访问时war使用-->
  <dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-tomcat</artifactId>
  <!-- scope是provided，但是idea的pom里面识别不了provided的，所以必须注释掉，eclipse不用注掉 -->
  <!--<scope>provided</scope>-->
  </dependency>

3、在Application类继承SpringBootServletInitializer

//外部tomcat运行环境
@SpringBootApplication
public class Application extends SpringBootServletInitializer {

    //使用外置tomcat，继承SpringBootServletInitializer
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(Application.class);
    }

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