给线程指定超时时间，超时则停止线程

最新推荐文章于 2024-09-18 07:13:01 发布

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最新推荐文章于 2024-09-18 07:13:01 发布

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CC 4.0 BY-SA版权

文章标签： c#

原文链接：http://www.cnblogs.com/janetshen/p/7976801.html

本文介绍了一种使用多线程异步调用接口获取指定终端ID和日期的交易推荐计数的方法，并展示了如何通过Java实现接口调用、设置线程池、提交任务以及处理异步计算结果。

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 1 private String getRecommendCount(BaseInfo baseInfo) throws Exception{
 2         ExecutorService exec = Executors.newCachedThreadPool();
 3 //        int timeout = 5; // 访问接口的时间限制
 4         String terminalIds = getTerminalIds(baseInfo.getTaskInfo().getBranch());
 5         String queryDate = getQueryDate(baseInfo.getTaskInfo().getBranch());
 6         TradeCountThread task = new TradeCountThread(terminalIds, queryDate);
 7         Future<String> future = exec.submit(task);
 8         String taskResult = "";
 9         String failReason = null;
10         try {
11             // 等待计算结果，最长等待timeout秒，timeout秒后中止任务
12             taskResult = future.get(LIMIT_SECONDS, TimeUnit.SECONDS);
13         } catch (InterruptedException e) {
14             failReason = "主线程在等待返回结果时被中断！";
15         } catch (ExecutionException e) {
16             failReason = "主线程等待返回结果，但任务本身抛出异常！";
17         } catch (TimeoutException e) {
18             failReason = "主线程等待计算结果超时，因此中断任务线程！";
19             exec.shutdownNow();
20         }
21         exec.shutdown();
22         log.info("taskResult : " + taskResult);
23         log.info("failReason : " + failReason);
24         return taskResult;
25     }
26     
27     
28     private class TradeCountThread implements Callable<String> {
29         
30         private String terminalIds;
31         private String queryDate;
32         public TradeCountThread(String terminalIds, String queryDate){
33             this.terminalIds = terminalIds;
34             this.queryDate = queryDate;
35         }
36 
37         public String call() throws Exception {
38             String resultStr = "";
39             String reqStr = "{\"verifyID\":\"getTxnCounts\",\"list\":["
40                 + terminalIds +"],\"queryTime\":'" 
41                 + queryDate +"'}";
42             System.out.println("reqStr::"+reqStr);
43             try{
44                 Service service = new Service();
45                 Call call = (Call) service.createCall();
46                 call.setTargetEndpointAddress(GET_TXN_COUNT_URL);
47                 call.setOperation(OPERATION_NAME);
48                 resultStr = (String) call.invoke(new Object[]{reqStr });
49             }catch(Exception e ){
50                 e.printStackTrace();
51                 throw e;
52             }
53             return resultStr;
54         }  
55     }