@RequestMapping(value = "/project",method = RequestMethod.GET)public Callable
    
      queryProjectApprovalInfo(){    System.out.println("主线程开始："+Thread.currentThread().getId());    Callable
     
       callable = new Callable
      
       () {        @Override        public String call() throws Exception {            System.out.println("子线程开始："+Thread.currentThread().getId());            String result = "执行结束";            System.out.println("子线程结束："+Thread.currentThread().getId());            return result;        }    };    System.out.println("主线程结束："+Thread.currentThread().getId());    return callable;}