详解Springboot对多线程的支持

package com.spartajet.springbootlearn.thread;
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;
/**
 * @description
 * @create 2017-02-22 下午11:53
 * @email gxz04220427@163.com
 */
@Configuration
@EnableAsync
public class ThreadConfig implements AsyncConfigurer {
  /**
   * The {@link Executor} instance to be used when processing async
   * method invocations.
   */
  @Override
  public Executor getAsyncExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(5);
    executor.setMaxPoolSize(15);
    executor.setQueueCapacity(25);
    executor.initialize();
    return executor;
  }
  /**
   * The {@link AsyncUncaughtExceptionHandler} instance to be used
   * when an exception is thrown during an asynchronous method execution
   * with {@code void} return type.
   */
  @Override
  public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
    return null;
  }
}

package com.spartajet.springbootlearn.thread;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
/**
 * @description
 * @create 2017-02-23 上午12:00
 * @email gxz04220427@163.com
 */
@Service
public class AsyncTaskService {
  @Async
  public void executeAsyncTask(int i) {
    System.out.println("线程" + Thread.currentThread().getName() + " 执行异步任务：" + i);
  }
}

package com.spartajet.springbootlearn;
import com.spartajet.springbootlearn.thread.AsyncTaskService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith (SpringRunner.class)
@SpringBootTest
public class SpringbootLearnApplicationTests {
  @Autowired
  private AsyncTaskService asyncTaskService;
  @Test
  public void contextLoads() {
  }
  @Test
  public void threadTest() {
    for (int i = 0; i < 20; i++) {
      asyncTaskService.executeAsyncTask(i);
    }
  }
}