Question

我正在java中成功地将json对象发送到azure云。但问题是我的收件人，收到的消息很好，但问题是当我想将它发送回PHP时：我发来这条消息：

{“Id”：“914897”，“名称”：“破窗”，“描述”：“窗口破”， “PriorityId”： “1”}

当我收到此消息时，我想首先打印出消息，以验证我是否收到了结果并发送了它。但是在while循环中打印正确但是在破坏结果之外这里是我的代码：

 try {

        Configuration config
                = ServiceBusConfiguration.configureWithSASAuthentication(

                );


        ServiceBusContract service = ServiceBusService.create(config);

        ReceiveMessageOptions opts = ReceiveMessageOptions.DEFAULT;
        opts.setReceiveMode(ReceiveMode.PEEK_LOCK);
        //send object
        HttpClient httpClient = new DefaultHttpClient();
        Gson gson= new Gson();
        while (true) {
            ReceiveQueueMessageResult resultQM = service.receiveQueueMessage("mobile",opts);
            BrokeredMessage message = resultQM.getValue();
            if (message != null && message.getMessageId() != null) {
                System.out.println("MessageID: " + message.getMessageId());
                // Display the queue message.
                System.out.print("From queue:");
                byte[] b = new byte[20000000];
                String message_from_queue = null;
                String thu =null;
                String jsonn = null;
                int numRead = message.getBody().read(b);


                while (-1 != numRead) {
                    message_from_queue = new String(b);

                   message_from_queue  = message_from_queue .trim();                      
                   numRead = message.getBody().read(b);
                //System.out.print("inside while" +message_from_queue + **"\n");//{"Id":"914897","Name":"Broken window","Description":"Window broken","PriorityId":"1"}**


                                 try {


    HttpPost request = new HttpPost("http://localhost:3308/emlive/index.php/Api/createDefect");
    StringEntity params =new StringEntity("defect=" + message_from_queue );
    request.addHeader("content-type", "application/x-www-form-urlencoded");
    request.addHeader("Accept","application/json");
    request.setEntity(params);
    HttpResponse response = httpClient.execute(request);
    //System.out.printf("---------------------------------Done-------------------------------");
    // handle response here...
    message.setSessionId("");
    System.out.println(org.apache.http.util.EntityUtils.toString(response.getEntity()));
   org.apache.http.util.EntityUtils.consume(response.getEntity());
}
catch (Exception ex) {
    // handle exception here
} finally {
    httpClient.getConnectionManager().shutdown();
}
  }
                  //System.out.print("outside while" +message_from_queue +                   "\n");//Broken window","Description":"Window broken","PriorityId":"1"}                                                            

                System.out.println();
                System.out.println("Custom Property: "
                        + message.getProperty("MyProperty"));
                //service.deleteMessage(message);
                System.out.println("Deleting this message.");

                //service.deleteMessage(message);
            } else {
                System.out.println("Finishing up - no more messages.");
                break;
                // Added to handle no more messages.
                // Could instead wait for more messages to be added.
            }

        }
    } catch (ServiceException e) {
        System.out.print("ServiceException encountered: ");
        System.out.println(e.getMessage());
        System.exit(-1);
    } catch (Exception e) {
        System.out.print("Generic exception encountered: ");
        System.out.println(e.getMessage());
        System.exit(-1);
    }

我得到了这样的结果：在循环中打印：

 while (-1 != numRead) {
 message_from_queue = new String(b);

  message_from_queue  = message_from_queue .trim();                      
  numRead = message.getBody().read(b);

 System.out.print("inside while" +message_from_queue + **"\n");//{"Id":"914897","Name":"Broken window","Description":"Window broken","PriorityId":"1"}**
}

在循环中打印：

System.out.print("outside while" +message_from_queue + "\n");/*Broken window","Description":"Window broken","PriorityId":"1"}

Answer 1

所有感谢Dominic Betts来自此链接https://azure.microsoft.com/en-us/documentation/articles/service-bus-java-how-to-use-queues/#comments

我使用以下代码来实现我的目标：

 StringBuilder stringBuilder = new StringBuilder();
 stringBuilder.append(message_from_queue );

Answer 2

我认为这个问题是由内部while循环中的POST请求引起的。内部while循环中的代码用于从队列中读取消息，因此HttpClient的POST请求应该在while循环中。

我参考了文档https://azure.microsoft.com/en-us/documentation/articles/service-bus-java-how-to-use-queues/并修改了您的代码，如下所示：

try {
    Configuration config = ServiceBusConfiguration.configureWithSASAuthentication("<namespace>", "<sas_key_name>",
            "<sas_key>", ".servicebus.windows.net");
    ServiceBusContract service = ServiceBusService.create(config);
    ReceiveMessageOptions opts = ReceiveMessageOptions.DEFAULT;
    opts.setReceiveMode(ReceiveMode.PEEK_LOCK);
    // send object
    // HttpClient httpClient = new DefaultHttpClient();
    CloseableHttpClient httpClient = HttpClients.createDefault();
    // Gson gson = new Gson();
    while (true) {
        ReceiveQueueMessageResult resultQM = service.receiveQueueMessage("mobile", opts);
        BrokeredMessage message = resultQM.getValue();
        if (message != null && message.getMessageId() != null) {
            System.out.println("MessageID: " + message.getMessageId());
            // Display the queue message.
            System.out.print("From queue:");
            byte[] b = new byte[20000000];
            String message_from_queue = null;
            // String thu = null;
            // String jsonn = null;
            int numRead = message.getBody().read(b);
            while (-1 != numRead) {
                message_from_queue = new String(b);
                message_from_queue = message_from_queue.trim();
                numRead = message.getBody().read(b);
                // System.out.print("inside while" +message_from_queue +
                // **"\n");//{"Id":"914897","Name":"Broken
                // window","Description":"Window
                // broken","PriorityId":"1"}**
            }
            // System.out.print("outside while" +message_from_queue +
            // "\n");//Broken window","Description":"Window
            // broken","PriorityId":"1"}
            int statusCode = -1;
            try {
                HttpPost request = new HttpPost("http://localhost:3308/emlive/index.php/Api/createDefect");
                StringEntity params = new StringEntity("defect=" + message_from_queue);
                request.addHeader("content-type", "application/x-www-form-urlencoded");
                request.addHeader("Accept", "application/json");
                request.setEntity(params);
                HttpResponse response = httpClient.execute(request);
                // System.out.printf("---------------------------------Done-------------------------------");
                // handle response here...
                message.setSessionId("");
                System.out.println(EntityUtils.toString(response.getEntity()));
                EntityUtils.consume(response.getEntity());
            } catch (Exception ex) {
                // handle exception here
            } finally {
                httpClient.close();
            }
            System.out.println();
            System.out.println("Custom Property: " + message.getProperty("MyProperty"));
            if (statusCode == 200) {
                // Remove message from queue.
                System.out.println("Deleting this message.");
                service.deleteMessage(message);
            }
        } else {
            System.out.println("Finishing up - no more messages.");
            break;
            // Added to handle no more messages.
            // Could instead wait for more messages to be added.
        }

    }
} catch (ServiceException e) {
    System.out.print("ServiceException encountered: ");
    System.out.println(e.getMessage());
    System.exit(-1);
} catch (Exception e) {
    System.out.print("Generic exception encountered: ");
    System.out.println(e.getMessage());
    System.exit(-1);
}

最好的问候

打印输出导致while循环输出不同导致Java azure

2 个答案: