使用 URL 注册异步通知？

发布于 2024-09-07 03:07:03 字数 1869 浏览 0 评论 0原文

我正在尝试了解有关异步通知的更多信息。我有一个以下形式的 URL：

http://www.sample.com/AsyncNotify?sessionId=xxxxxx

现在，如果我使用 sessionId 调用此 URL，则相当于注册异步通知。我正在使用 Apache HTTP Commons 库来执行 Http Post 和 Get。如果是这样的话，那么我如何从服务器端接收事件呢？我是否必须忘记这种方法并使用套接字来代替？目前，这是我的方法：

HttpClient httpClient = new HttpClient;
String url = "http://www.sample.com/AsyncNotify?sessionId=xxxxxx"
GetMethod get = new GetMethod(url);
try {
   httpClient.executeMethod(get);
   //read the response
} catch(Exception e) {

}

我的想法是在 while 循环内建立套接字级连接，并在接收到一些数据时调用处理程序，但有没有更好的方法来实现这一点？

编辑：

我已使用 xSocket 进入以下阶段，但连接在 30 秒后关闭：

         try {
            String _GETRequest = "/sample/notify";
            HttpClientConnection con = new HttpClientConnection("10.0.0.23", 5050);

            con.setConnectionTimeoutMillis(100000);
            GetRequest request = new GetRequest(_GETRequest);
            request.setParameter("id", id);

            IHttpResponseHandler responseHandler = new AsyncHandler();

            con.send(request, responseHandler);
            org.xlightweb.client.HttpClient httpClient = new org.xlightweb.client.HttpClient();
            request.setParameter("id", id);
            con.send(request, responseHandler);

                    // Don't let the program terminate. In other words,
                    // wait for a message from the server
            while(con.isOpen()) {};

            if(!con.isOpen()) {
            }

        } catch (ConnectException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

原文

I am trying to understand more about async notifications. I have a URL in the form of:

http://www.sample.com/AsyncNotify?sessionId=xxxxxx

Now if I call this URL with the sessionId, it is equivalent to registering for Asynchronous notifications. I am using Apache HTTP Commons library to do Http Post and Get. If that's the case, then how can I receive events from the server side? Do I have to forget this approach and use sockets instead? Currently, this is my approach:

HttpClient httpClient = new HttpClient;
String url = "http://www.sample.com/AsyncNotify?sessionId=xxxxxx"
GetMethod get = new GetMethod(url);
try {
   httpClient.executeMethod(get);
   //read the response
} catch(Exception e) {

}

What I was thinking was to establish a socket level connection inside a while loop and call a handler whenever it receives some data, but is there a better way to achieve this?

EDIT:

I've used xSocket to get to the following stage but the connection closes after 30 seconds:

         try {
            String _GETRequest = "/sample/notify";
            HttpClientConnection con = new HttpClientConnection("10.0.0.23", 5050);

            con.setConnectionTimeoutMillis(100000);
            GetRequest request = new GetRequest(_GETRequest);
            request.setParameter("id", id);

            IHttpResponseHandler responseHandler = new AsyncHandler();

            con.send(request, responseHandler);
            org.xlightweb.client.HttpClient httpClient = new org.xlightweb.client.HttpClient();
            request.setParameter("id", id);
            con.send(request, responseHandler);

                    // Don't let the program terminate. In other words,
                    // wait for a message from the server
            while(con.isOpen()) {};

            if(!con.isOpen()) {
            }

        } catch (ConnectException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

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