Spring Boot将项目打包成war包的操作方法

<packaging>war</packaging>

<dependencies>
    <!--web启动器依赖-->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
      <!--移除默认启动容器-->
      <exclusions>
        <exclusion>
          <artifactId>spring-boot-starter-tomcat</artifactId>
          <groupId>org.springframework.boot</groupId>
        </exclusion>
      </exclusions>
    </dependency>

<dependency>  
    <groupId>javax.servlet</groupId>  
    <artifactId>javax.servlet-api</artifactId>  
    <version>3.1.0</version>  
    <scope>provided</scope>
</dependency>

<dependency>
  <groupId>org.apache.tomcat</groupId>
  <artifactId>tomcat-servlet-api</artifactId>
  <version>8.0.36</version>
  <scope>provided</scope>
</dependency>

package com.maxbill;
import com.maxbill.core.desktop.DesktopApp;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.ConfigurableApplicationContext;
@SpringBootApplication
@MapperScan("com.maxbill.base.dao")
public class MainApplication extends DesktopApp {
  public static ConfigurableApplicationContext context;
  public static void main(String[] args) {
    //启动后台服务
    context = SpringApplication.run(MainApplication.class, args);
    //启动桌面服务
    launch(args);
  }
}

package com.maxbill;
import com.maxbill.core.desktop.DesktopApp;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;    
import org.springframework.boot.builder.SpringApplicationBuilder;
@SpringBootApplication
@MapperScan("com.maxbill.base.dao")
public class MainApplication extends SpringBootServletInitializer{
  @Override
  //修改启动类，继承 SpringBootServletInitializer并重写 configure方法
  protected SpringApplicationBuilder configure(SpringApplicationBuilder builder){
    //注意这里要指向原先用main方法执行的Application启动类
    return builder.sources(MainApplication.class);
  }
  public static ConfigurableApplicationContext context;
  public static void main(String[] args) {
    //启动后台服务
    context = SpringApplication.run(MainApplication.class, args);
    //启动桌面服务
    launch(args);
  }
}