[英]FutureTask how to manage threads..?
I am trying to send reqeuest to server...and until request is not responded i want to execute a loop printing integers..problem is my loop goes on and on, if i execute it till 100 it prints 100 values and if till 1000 it prints 1000. What i want is that the looping should be depended upon the response. 我正在尝试将请求发送到服务器...并且直到请求未响应我都想执行循环打印整数..问题是我的循环不断,如果我执行到100,它将打印100个值,如果直到1000它打印1000。我想要的是循环应取决于响应。 as soon as response occurs the loop thread should be stoped...
响应一发生,就应该停止循环线程...
public class ServiceInteraction {
FutureTask<JSONArray> task;
public JSONArray addUser(List<BasicNameValuePair> postPairs_interaction){
JSONArray jArray;
task = new FutureTask<JSONArray>(new Service_C(postPairs_interaction));
ExecutorService pool = Executors.newFixedThreadPool(2);
pool.submit(task);
for(int i = 0 ; i < 1000; i++){
System.out.println("value is "+i);
}//End of for loop
try{
return (jArray = task.get());
}catch(InterruptedException e){
return null;
}catch(ExecutionException e){
return null;
}
}//End Of addUser
Here is my service_c class code... 这是我的service_c类代码...
public Service_C(List<BasicNameValuePair> postPairs) {
this.postPairs = postPairs;
}
@Override
public JSONArray call() throws Exception {
HttpClient httpclient = new DefaultHttpClient();
HttpPost post = new HttpPost("http://10.0.0.62:8080/IDocWS/"+postPairs.get(0).getValue());
post.setEntity(new UrlEncodedFormEntity(postPairs));
ResponseHandler respHandler = new BasicResponseHandler();
String responseData = (String) httpclient.execute(post,respHandler);
try {
JSONArray jArray;
jArray = new JSONArray(responseData);
return jArray;
} catch (JSONException ex) {
Logger.getLogger(Service.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("Error in getting response from the user");
return null;
}
}//End of call method
You can try this: 您可以尝试以下方法:
for (int i = 0;;i++){
if (task.isDone()) {
break;
}
System.out.println("value is "+i);
}
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