Spring的异步线程处理
Spring封装了JDK的线程池和线程调用，并使用标签就可以开启多线程调用。
先进行一个Spring的线程池配置
@Configuration
@EnableAsync
public class ThreadPoolConfig implements AsyncConfigurer {
@Bean
@Override
public Executor getAsyncExecutor() {
ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
executor.setCorePoolSize(Runtime.getRuntime().availableProcessors());
executor.setMaxPoolSize(Runtime.getRuntime().availableProcessors() * 5);
executor.setQueueCapacity(Runtime.getRuntime().availableProcessors() * 2);
executor.setThreadNamePrefix("this-executor-");
executor.initialize();
return executor;
}
@Bean
@Override
public AsyncUncaughtExceptionHandler getAsyncUncaughtExceptionHandler() {
return new SimpleAsyncUncaughtExceptionHandler();
}
}再编写一个Service的异步方法调用，这里是带返回值的，不带返回值的方法比较简单，这里就不举例了。
@Service
@Slf4j
public class ThreadTasks {
/**
* 如果异步方法有返回值，一定要使用Future包装，否则无法返回
* @return
* @throws InterruptedException
*/
@Async
public Future<String> startTask() throws InterruptedException {
Thread.sleep(3000);
log.info("this is async task");
return new AsyncResult<>("123456");
}
}最后写一个Controller,对该异步方法进行调用
@RestController
public class AsyncTaskController {
@Autowired
private ThreadTasks tasks;
@GetMapping("/users-anon/useTask")
public String useSyncTask() throws InterruptedException, ExecutionException {
Future<String> future = tasks.startTask();
return future.get();
}
}最后运行下来，我们可以看到每次都是不同的线程执行
2020-09-21 16:33:53.027 INFO [user-center,3e635fca3d1259da,d30e8b6372922137,false] 1126 --- [this-executor-1] com.cloud.user.service.ThreadTasks : this is async task
2020-09-21 16:35:27.664 INFO [user-center,9b68efbb2c848d7b,895ed921f6c8fe03,false] 1126 --- [this-executor-2] com.cloud.user.service.ThreadTasks : this is async task本文参与 腾讯云自媒体分享计划，分享自作者个人站点/博客。
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