安卓中处理http超时

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http超时限制可以用一下两句：

 HttpConnectionParams.setConnectionTimeout(post.getParams(), CONNECTION_TIOMOUT); HttpConnectionParams.setSoTimeout(post.getParams(), CONNECTION_TIOMOUT);

但是这只能限定连接超时和soket超时，对于dns查找超时和传输内容过多而导致的超时是无能为力的。

应付这些超时，可以使用一条额外的超时检查线程来把超时的http请求线程强制interrupt。

调用httpPostRequest的线程会等待网络线程完成，若网络线程在限定时间内完成请求，则调用notify唤醒等待线程。若网络线程超时，检查线程调用interrupt，中止网络线程，同时调用notify唤醒等待线程。

public static String httpPostRequest(String url, JSONObject jsonObject ) {        try {            final HttpClient httpClient = new DefaultHttpClient();            final HttpPost post = new HttpPost(url);            post.setHeader("Content-Type", "application/json");            post.setEntity(new StringEntity(jsonObject.toString()));            HttpConnectionParams.setConnectionTimeout(post.getParams(), CONNECTION_TIOMOUT);            HttpConnectionParams.setSoTimeout(post.getParams(), CONNECTION_TIOMOUT);            HttpExecutehread th = new HttpExecutehread(httpClient, post);            th.start();            new Timer(true).schedule(new CheckTimeOutTask(th), OVERALL_TIOMOUT);            synchronized (th) {                th.wait();            }            LogUtils.d(TAG, "after waite " + th);            if (th.mHttpResponse != null && th.mHttpResponse.getStatusLine().getStatusCode() == 200) {                String result = EntityUtils.toString(th.mHttpResponse.getEntity(), "utf-8");                LogUtils.d(TAG, "get post result");                return result;            }        } catch (Exception e) {            e.printStackTrace();        }        return null;    }    private static class CheckTimeOutTask extends TimerTask {        private HttpExecutehread th;        public CheckTimeOutTask(HttpExecutehread th) {            this.th = th;        }        @Override        public void run() {            if (th != null && th.mHttpResponse == null) {                th.interrupt();                synchronized (th) {                    th.notify();                }                LogUtils.d(TAG, "post thread " + th + " interrupt and notify");            }        }    }    private static class HttpExecutehread extends Thread {        private HttpPost mHttpPost;        private HttpClient mHttpClient;        public HttpResponse mHttpResponse;        public HttpExecutehread(HttpClient httpClient, HttpPost httpPost) {            mHttpClient = httpClient;            mHttpPost = httpPost;        }        @Override        public void run() {            try {                mHttpResponse = mHttpClient.execute(mHttpPost);            } catch (IllegalArgumentException ec) {                LogUtils.d(TAG, ec.toString());                interrupted();            } catch (ClientProtocolException e) {                LogUtils.d(TAG, e.toString());                interrupted();            } catch (IOException e) {                LogUtils.d(TAG, e.toString());                interrupted();            }finally {                LogUtils.d(TAG, "post notify");                synchronized (this) {                    notify();                }            }        }    }

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