SpringBoot war包部署

很多小伙伴在使用SpringBoot 进行war部署时会遇到一些坑，小编今天分享一些避坑指南。
启动类：

public class DemoSpringBootApplication extends SpringBootServletInitializer {
    public static void main(String[] args) {
        ConfigurableApplicationContext context = SpringApplication.run(DdssBootApplication.class);
    }
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(DemoSpringBootApplication .class);
    }
}

POM文件：

<packaging>war</packaging>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

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