idea中将springboot打成war

第一步：
pom.xml中加入<packaging>war</packaging>

第二步：
排除内置tomcat
        <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>

第三步：
加入servlet-api依赖
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

第四步：
启动类修改
@SpringBootApplication
public class TestApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder build){
        return build.sources(TestApplication.class);
    }

    public static ConfigurableApplicationContext context;

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

}

接下来使用maven打包