MQ推送消息C＃

Question

我忙於C# MQ，我想在Q上添加文本，但不知道我在做什麼是錯誤的。獲取以下錯誤。

類型的未處理的異常 'System.NullReferenceException' 發生Data.Manager.dll，這種情況發生在 「Put1Queue.Put（myPutMessage，Put1PutMsgOptions）;」

下面是代碼：

class Program 
{ 

    static void Main(string[] args) 
    { 
     MQ mq = new MQ(); 
     Console.Read(); 
    } 
} 

public class MQ 
{ 

    private MQQueue queue; 
    private MQMessage queueMessage; 
    private MQQueueManager queueManager; 

    private string queueManagerName; 
    private string host; 
    private int port; 
    private string channel; 
    private string queueName; 

    public String putMsg; 
    public String markerMsg; 
    private MQQueueManager Put1QueueManager; 
    private MQPutMessageOptions Put1PutMsgOptions; 
    private MQQueue Put1Queue; 

    private MQQueueManager Put2QueueManager; 
    private MQPutMessageOptions Put2PutMsgOptions; 
    private MQQueue Put2Queue; 

    private MQQueueManager myQueueManager; 
    private MQPutMessageOptions myPutMsgOptions; 
    private MQQueue myQueue; 

    private Hashtable queueProperties; 

    public MQ() 
    { 
     setupTestData(); 

    } 

    public void setupTestData() 
    { 

     markerMsg = "<msglamdav5_xml><system message_id=\"\" message_type=\"\" correlation_id=\"\" date_time_stamp=\"\" originator=\"\" destination=\"\" queue_manager=\"\" txn_req_number=\"\" txn_req_id=\"\"/><security user_name=\"G9022O2 \" user_type=\"\" user_identity=\"G90226K  \" user_language=\"\" environment=\"PPEX \" host_name=\"\"/><errors/><data><txn_ctl bus_txn_phase=\"3\" bus_txn_session_id=\"\" /><data_key party_no=\"0\"/><tasks><task txn_id=\"MARK<uniqueNum> \" event_type=\"2\" external_txn_id=\"04255841252012-06-22-04.56.14.960000   \"><task_data><servicedata inputdata=\"0124473471\"/></task_data><task_metadata><lists/></task_metadata></task></tasks></data></msglamdav5_xml>"; 

     try { 
     // Setup connection information 
     MQEnvironment.Hostname = "SLHUBQ2.sanlam.co.za"; 
     MQEnvironment.properties.Add(MQC.TRANSPORT_PROPERTY, MQC.TRANSPORT_MQSERIES_CLIENT); 
     MQEnvironment.properties.Add(MQC.CCSID_PROPERTY, 437); 
     MQEnvironment.Channel = "CLIENTS";//"EFL.SRVCONN"; 
     MQEnvironment.Port = 1615;//lr.eval_int("<Port>"); 


     Put1QueueManager = new MQQueueManager("SLHUBQ2"); 
     int openOptions = MQC.MQOO_OUTPUT | MQC.MQOO_INQUIRE | MQC.MQOO_FAIL_IF_QUIESCING; 

     Put1Queue = Put1QueueManager.AccessQueue("LAMDA.PERF.REQUEST", openOptions, null, null, null); 

     Put1PutMsgOptions = new MQPutMessageOptions(); 

     Put1PutMsgOptions.Options = MQC.MQPMO_NEW_MSG_ID | MQC.MQPMO_NEW_CORREL_ID; 

     } 
     catch (Exception error) 
     { 

     } 

     try { 
       MQMessage myPutMessage = new MQMessage(); 
       myPutMessage.ClearMessage(); 
       myPutMessage.Persistence = MQC.MQPER_PERSISTENT; 
       myPutMessage.Persistence = MQC.MQPER_NOT_PERSISTENT; 
       myPutMessage.CorrelationId = MQC.MQCI_NONE; 
       myPutMessage.MessageId = MQC.MQMI_NONE; 

       myPutMessage.Format = MQC.MQFMT_STRING; 
       myPutMessage.ReplyToQueueName= "LAMDA.PERF.RESPONSE"; 

       myPutMessage.WriteString(markerMsg); 


       Put1Queue.Put(myPutMessage, Put1PutMsgOptions); 




     } 
     catch (MQException error) 
     { 


     } 


     try 
     { 
      Put1Queue.Close(); 
      Put1QueueManager.Disconnect(); 

     } 
     catch (Exception error) 
     { 

     } 



    } 



    } 
} 

Answer 1

的問題可能會在你的代碼行

Put1Queue = Put1QueueManager.AccessQueue("LAMDA.PERF.REQUEST", openOptions, null, null, null); 

也許 'AccessQueue' 方法返回 '空' 的結果。因此，您可以嘗試檢查：

1. 您的隊列名稱是否正確。
2. 選項是否正確。您可以嘗試通過MQC.MQOO_OUTPUT + MQC.MQOO_FAIL_IF_QUIESCING選項。

Answer 2

您如何在每條catch語句中打印異常，因爲我敢打賭，您在AccessQueue上獲得RC 2035，因此，Put方法的Put1Queue爲null。 即

catch (MQException mqex) 
{ 
    System.Console.Out.WriteLine("MQException cc=" + mqex.CompletionCode + " : rc=" + mqex.ReasonCode); 
} 
catch (System.IO.IOException ioex) 
{ 
    System.Console.Out.WriteLine("IOException ioex=" + ioex); 
} 
catch (Exception ex) 
{ 
    System.Console.Out.WriteLine("Exception ex=" + ex); 
}