实例讲解spring boot 多线程

package com.cenobitor.taskxecutor.config;

import org.springframework.aop.interceptor.AsyncUncaughtExceptionHandler;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.AsyncConfigurer;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import java.util.concurrent.Executor;

@Configuration
@EnableAsync
public class TaskExecutorConfig implements AsyncConfigurer {

  @Override
  public Executor getAsyncExecutor() {
    ThreadPoolTaskExecutor taskExecutor = new ThreadPoolTaskExecutor();
    taskExecutor.setCorePoolSize(5);
    taskExecutor.setMaxPoolSize(10);
    taskExecutor.setQueueCapacity(25);
    taskExecutor.initialize();
    return taskExecutor;
  }

  @Override
  public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
    return null;
  }
}

package com.cenobitor.taskxecutor.taskservice;

import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

@Service
public class AsyncTaskService {

  @Async
  public void excuteAsyncTask(Integer i){
    System.out.println("异步执行任务:"+i);
  }

  @Async
  public void excuteAsyncTaskPlus(Integer i){
    System.out.println("异步执行任务+1:"+(i+1));
  }
}

package com.cenobitor.taskxecutor;

import com.cenobitor.taskxecutor.taskservice.AsyncTaskService;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

public class Main {
  public static void main(String[] args) {
    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(TaskxecutorApplication.class);
    AsyncTaskService asyncTaskService = context.getBean(AsyncTaskService.class);
    for (int i = 0; i < 10; i++) {
      asyncTaskService.excuteAsyncTask(i);
      asyncTaskService.excuteAsyncTaskPlus(i);
    }
    context.close();
  }

}