public void deleteResourse() {
          System.out.println(ServletActionContext.getRequest());//此处能正确获得HttpRequest实例
   new Thread(new Runnable() {
            @Override
            public void run() {
                System.out.println(ServletActionContext.getRequest());//此处报空指针异常
            }
            
        }).start();
}
对多线程不熟悉,请高人指点,谢谢!