应用程序或会话对后台线程不可用

Question

开发环境

java + Wicket + hibernate + spring

描述

从ui调用@Async方法时，该方法中的web会话不可用。

我在页面中有一个按钮，当用户单击该按钮时，它将调用"importContactInBackground“方法。

Spring xml配置

<task:annotation-driven executor="commonTaskExecutor"/>
<task:executor id="commonTaskExecutor" pool-size="5-10" queue-capacity="20"/>

bean类中的@Async方法

@Async
public void importContactInBackground(File file)
{
    importService.import(file);
    CustomSession customSession = (CustomSession)Session.get();//throws exception
    LOGGER.info("Contacts are imported by {}", customSession.getUsername());
}

异常

org.apache.wicket.WicketRuntimeException: There is no application attached to current thread commonTaskExecutor-2
at org.apache.wicket.Application.get(Application.java:235)
at org.apache.wicket.Session.get(Session.java:175)

Answer 1

我在这里找到了一些东西，working-with-background-jobs，它起作用了