代码之家 › 专栏 › 技术社区 › IdiotDrake

执行新Runnable时丢失ApplicationContext

applicationcontext executorservice struts2 spring java

IdiotDrake · 技术社区 · 8 年前

我知道我对这个春天的事还不熟悉,但我一整天都在做这个。我不太喜欢问问题,但也许我会有个主意。

所以我的问题是:

@Component
public class FifoComponent {
public static ExecutorService executors = Executors.newSingleThreadExecutor();
private static Lock lock = new ReentrantLock(true);

public static void executeNewTestJob(int i) {
    lock.lock();
    OrderAllocationTestJob job = new OrderAllocationTestJob(i);
    executors.execute(job);
    lock.unlock();
}
}

Runnable component-note appdateutils有一个方法,可以调用在我典型的tomcat环境中运行良好的组件

@Component
public class OrderAllocationTestJob implements Runnable {
int i;

public OrderAllocationTestJob(int i) {
    this.i = i;
}

@Override
public void run() {
    try {
        Thread.sleep(100);
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    System.out.println("Asynchronous task " + i);
    System.out.println(AppDateUtils.getCurrentTimeStamp());
}
}

调用struts2操作(测试)我知道我可以调用appdateutils.gettime文件方法来自

    for (int i = 0; i < 50; i++) {
        FifoComponent.executeNewTestJob(i);
    }

Exception in thread "pool-15-thread-50" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dateTimestampDao': Scope 'request' is not active for the current thread; consider defining a scoped proxy for this bean if you intend to refer to it from a singleton; nested exception is java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

4 回复 | 直到 8 年前

Gilliard Macedo 8 年前

“我相信有更好的方法”

基于此,您需要在调用另一个线程之前创建/查找所有请求和会话范围的组件。实际上,请求注入是线程本地的,不能在您的场景中工作。

Amin Chokan 8 年前

我想如果你离开

Thread.sleep(100);

job.sleep(100);

在FifoComponent将解决您的问题

IdiotDrake 8 年前

我通过为我的runnable扩展ConcurrentLinkedQueue并将它们保存在我在ServletContextListener的initialize方法中实例化的管理器中来解决这个问题。通过重写ConcurrentLinkedQueue的offer()方法来持续轮询,直到队列为空为止,我能够同步处理可运行文件。

我仍然希望ExecutorService从我的Tomcat容器中执行,但是在请求的范围之外,但是除非有人能回答这个问题,否则我现在就不得不离开它

Kumar Panchal 8 年前

@组成部分公共类AsynchronousThread扩展线程{

public static final Logger LOGGER = LoggerFactory
        .getLogger(AsynchronousThread.class);

@Autowired
private Writer writer;


private BlockingQueue<IndexContextDTO> blockingQueue = new LinkedBlockingQueue<IndexContextDTO>(
        500);

/**
 * 
 */
public AsynchronousThread() {
    super("AsynchronousThread");
}


@PostConstruct
public void init() {
    Integer internalQueueSize = 100;
    this.blockingQueue = new LinkedBlockingQueue<>(internalQueueSize);
    this.start();
}


@Override
public void run() {

    while (true) {
        // Do stuff
    }
}


public void putInQueue(IndexContextDTO message) {
    try {
        this.blockingQueue.put(message);
    } catch (InterruptedException interruptedException) {
        // This exception will be thrown in very rare case.
        LOGGER.error("An error while putting message in the queue. "
                + message, interruptedException);
    }
}

}