springboot让内置tomcat失效

一、POM(去除内嵌tomcat后，需要添加servlet依赖)

     <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <!-- 去除内嵌tomcat -->
      <exclusions>
        <exclusion>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-tomcat</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <!--添加servlet的依赖-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.0.0</version>
      </plugin>

打包方式设置成war

 <packaging>war</packaging>

二、继承SpringBootServletInitializer重写configure方法

package com.example.export;

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

@SpringBootApplication
public class ExportApplication extends SpringBootServletInitializer {
    public static void main(String[] args) {
        SpringApplication.run(ExportApplication.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(this.getClass());
    }

}

三、添加到tomcat容器、run 即可