EBCDIC 中的独立 JMS 到大型机 MQ

Question

我是 Websphere MQ (IBM z/OS) 技术的新手。我们需要实现一个独立的应用程序，该应用程序使用 JMS 技术连接到 MQ 服务器（在 IBM z/OS 上。这由我们只有有限访问权限的不同组织维护）并将消息放入队列。

下面是我的代码片段。

private void sendMessage(String queue, String msg) {
        JmsFactoryFactory ff = JmsFactoryFactory.getInstance(WMQConstants.WMQ_PROVIDER);
        JmsConnectionFactory cf = ff.createConnectionFactory();

        cf.setStringProperty(WMQConstants.WMQ_HOST_NAME, host);
        cf.setIntProperty(WMQConstants.WMQ_PORT, port);
        cf.setStringProperty(WMQConstants.WMQ_CHANNEL, channel);
        cf.setIntProperty(WMQConstants.WMQ_CONNECTION_MODE, WMQConstants.WMQ_CM_CLIENT);
        cf.setStringProperty(WMQConstants.WMQ_QUEUE_MANAGER, queueManagerName);
        cf.setStringProperty(WMQConstants.USERID, user);
        cf.setStringProperty(WMQConstants.PASSWORD, password);

    Connection connection = null;
    Session session = null;
    Destination destination = null;
    MessageProducer producer = null;


        connection = cf.createConnection(user, password);
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        destination = session.createQueue(queue);
        //((MQDestination)destination).setCCSID(37);
        producer = session.createProducer(destination);

        TextMessage message = session.createTextMessage();
        message.setIntProperty(WMQConstants.JMS_IBM_CHARACTER_SET, 37);
        //message.setIntProperty(WMQConstants.JMS_IBM_ENCODING, 785);

        message.setText(msg);
        // Start the connection
        connection.start();

        // And, send the message
        producer.send(message);
}

我成功连接到另一端的 MQ 服务器，并将消息以 ASCII 格式放在远程服务器上。我能够使用从 AIX 服务器放入队列的消息。

但是由于 MQ 在 z/OS 上运行并且使用者也是大型机应用程序，因此我输入的消息似乎是垃圾/不可读格式。经过一些研究，我发现消息需要转换为 EBCDIC 才能放在 z/OS MQ 上。我预计这将由 IBM MQ 库来处理。

请帮助我如何将消息放入 EBCDIC 格式。

Answer 1

你做错了：

message.setIntProperty(WMQConstants.JMS_IBM_CHARACTER_SET, 37);

您需要声明要放入队列的字符集。由于它看起来像 Java，我假设它是一个 UTF-16 字符串。将其声明为 1208，而不是 37。

另一方面，如果他们想要在 EBCDIC 中获得它，他们将执行 GET-With-Convert，声明他们想要在 IBM 37/1140 中接收它，并且 MQ 将调用 z/OS 的 Unicode 转换服务并生成它发生了。

Answer 2

更重要的是，如果你的接收者不是Java客户端，你需要禁用JMS头，如下：

destination = session.createQueue("queue:///" + queue + "?targetClient=1")

或通过调用 Native MQ 实现：

((MQDestination)destination).setMessageBodyStyle(WMQConstants.WMQ_MESSAGE_BODY_MQ)

见：

https://www-01.ibm.com/support/knowledgecenter/SSFKSJ_8.0.0/com.ibm.mq.dev.doc/q032120_.htm

https://www-01.ibm.com/support/knowledgecenter/SSFKSJ_8.0.0/com.ibm.mq.dev.doc/q032140_.htm?lang=en

http://www-01.ibm.com/support/knowledgecenter/SSFKSJ_7.0.1/com.ibm.mq.csqzaw.doc/jm10910_.htm

Answer 3

要以非标准编码存储您的消息，您必须使用BytesMessage 而不是TextMessage。这可能有效（未经测试！）：

byte[] messageBytes = msg.getBytes("IBM037");
BytesMessage message = session.createBytesMessage();
message.writeBytes(messageBytes);

但最好在消费端尊重给定的消息编码 - 这就是你把它放在那里的原因。

Answer 4

如果可能，使用 MQ 的 MQGMO 转换选项转换为本地机器的字符集。但是，如果您想（或不能）使用该机制，您也可以实现自己的字符集转换以完全控制。例如：

  //---------------------------------------------------
  //Character Translation Table for: IBM500
  private static char[] EBCDIC2ASCII_IBM500 = new char[] {

    0, 1, 2, 3, 156, 9, 134, 127, 151, 141, 142, 11, 12, 13, 14, 15, 
    16, 17, 18, 19, 157, 10, 8, 135, 24, 25, 146, 143, 28, 29, 30, 31, 
    128, 129, 130, 131, 132, 10, 23, 27, 136, 137, 138, 139, 140, 5, 6, 7, 
    144, 145, 22, 147, 148, 149, 150, 4, 152, 153, 154, 155, 20, 21, 158, 26, 
    32, 160, 226, 228, 224, 225, 227, 229, 231, 241, 91, 46, 60, 40, 43, 33, 
    38, 233, 234, 235, 232, 237, 238, 239, 236, 223, 93, 36, 42, 41, 59, 94, 
    45, 47, 194, 196, 192, 193, 195, 197, 199, 209, 166, 44, 37, 95, 62, 63, 
    248, 201, 202, 203, 200, 205, 206, 207, 204, 96, 58, 35, 64, 39, 61, 34, 
    216, 97, 98, 99, 100, 101, 102, 103, 104, 105, 171, 187, 240, 253, 254, 177, 
    176, 106, 107, 108, 109, 110, 111, 112, 113, 114, 170, 186, 230, 184, 198, 164, 
    181, 126, 115, 116, 117, 118, 119, 120, 121, 122, 161, 191, 208, 221, 222, 174, 
    162, 163, 165, 183, 169, 167, 182, 188, 189, 190, 172, 124, 175, 168, 180, 215, 
    123, 65, 66, 67, 68, 69, 70, 71, 72, 73, 173, 244, 246, 242, 243, 245, 
    125, 74, 75, 76, 77, 78, 79, 80, 81, 82, 185, 251, 252, 249, 250, 255, 
    92, 247, 83, 84, 85, 86, 87, 88, 89, 90, 178, 212, 214, 210, 211, 213, 
    48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 179, 219, 220, 217, 218, 159
  };

  private static char[] ASCII2EBCDIC_IBM500 = new char[] {
      0, 1, 2, 3, 55, 45, 46, 47, 22, 5, 37, 11, 12, 13, 14, 15, 
      16, 17, 18, 19, 60, 61, 50, 38, 24, 25, 63, 39, 28, 29, 30, 31, 
      64, 79, 127, 123, 91, 108, 80, 125, 77, 93, 92, 78, 107, 96, 75, 97, 
      240, 241, 242, 243, 244, 245, 246, 247, 248, 249, 122, 94, 76, 126, 110, 111, 
      124, 193, 194, 195, 196, 197, 198, 199, 200, 201, 209, 210, 211, 212, 213, 214, 
      215, 216, 217, 226, 227, 228, 229, 230, 231, 232, 233, 74, 224, 90, 95, 109, 
      121, 129, 130, 131, 132, 133, 134, 135, 136, 137, 145, 146, 147, 148, 149, 150, 
      151, 152, 153, 162, 163, 164, 165, 166, 167, 168, 169, 192, 187, 208, 161, 7, 
      32, 33, 34, 35, 36, 0, 6, 23, 40, 41, 42, 43, 44, 9, 10, 27, 
      48, 49, 26, 51, 52, 53, 54, 8, 56, 57, 58, 59, 4, 20, 62, 255, 
      65, 170, 176, 177, 159, 178, 106, 181, 189, 180, 154, 138, 186, 202, 175, 188, 
      144, 143, 234, 250, 190, 160, 182, 179, 157, 218, 155, 139, 183, 184, 185, 171, 
      100, 101, 98, 102, 99, 103, 158, 104, 116, 113, 114, 115, 120, 117, 118, 119, 
      172, 105, 237, 238, 235, 239, 236, 191, 128, 253, 254, 251, 252, 173, 174, 89, 
      68, 69, 66, 70, 67, 71, 156, 72, 84, 81, 82, 83, 88, 85, 86, 87, 
      140, 73, 205, 206, 203, 207, 204, 225, 112, 221, 222, 219, 220, 141, 142, 223
      };

  public static void main(String[] args)
  {
    String ebcdic = "" + (char)0xC1 + (char)0xC2 + (char)0xC3;
    System.err.println("ebcdic: " + ebcdic);

    String ascii = "";
    for( char c: ebcdic.toCharArray() ) {

      ascii += EBCDIC2ASCII_IBM500[c];
    }
    System.err.println("ascii:  " + ascii);

    ebcdic="";
    for( char c: ascii.toCharArray() ) {

      ebcdic += ASCII2EBCDIC_IBM500[c];
    }
    System.err.println("ebcdic: " + ebcdic);
  }

下面是创建这些表的代码：

public static void createTranslationTable(Charset charset)
 {
   System.out.println();
   System.out.println("// ---------------------------------------------------" );
   System.out.println("// Character Translation Tables for: " + charset.name() );

   byte[] b = new byte[256];
   for( int i=0;i<256;i++ ) b[i] = (byte)i;

   String s = "";
   try {
     s = new String(b,charset.name());
   }
   catch (UnsupportedEncodingException e) {
     e.printStackTrace();
   }

   int[] inverse = new int[256];

   System.out.println("unsigned char EBCDIC2ASCII_" + charset.name() + "[256] = {");
   for( int i=0;i<256;i++ ) {

     int c = s.charAt(i); // %256;
     if( c>255 ) c=i;
     inverse[c] = i;

     System.out.print( c + (i<255?", ":"") );
     if( i%16==15 ) System.out.println();
   }
   System.out.println("};");

   System.out.println("unsigned char ASCII2EBCDIC_" + charset.name() + "[256] = {");

   for( int i=0;i<256;i++ ) {

     int c = inverse[i]; // %256;
     System.out.print( c + (i<255?", ":"") );
     if( i%16==15 ) System.out.println();
   }

   System.out.println("};");
 }

你可以这样使用它：

 createTranslationTable( Charset.forName("CP037") );