springboot：非web啟動

需要運行一些調度任務，但是又不想放到web容器中運行。 見紅色代碼：

import java.util.concurrent.ThreadPoolExecutor;

import org.springframework.boot.WebApplicationType;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.core.task.AsyncTaskExecutor;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;

@SpringBootApplication
@EnableCaching
@EnableRedisHttpSession
@EnableAsync
@EnableScheduling
public class JspxScheduleApplication {

  public static void main(String[] args) {
   new SpringApplicationBuilder(JspxScheduleApplication.class).web(WebApplicationType.NONE).run(args);
  }

  @Bean
  public AsyncTaskExecutor asyncTaskExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setThreadNamePrefix("jspt-schedule-");
    executor.setMaxPoolSize(30);
    executor.setCorePoolSize(10);
    executor.setQueueCapacity(0);
    executor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());
    return executor;
  }

}

WebApplicationType 有三個值。

• NONE - 應用程序不應作為Web應用程序運行，也不應啟動嵌入式Web服務器。
• REACTIVE - 應用程序應作為響應式Web應用程序運行，並應啟動嵌入式響應式Web服務器。

• SERVLET - 應用程序應作為基於servlet的Web應用程序運行，並應啟動嵌入式servlet Web服務器。