我的任务是用 C#.NET 编写自定义应用程序，将消息从一个队列移动到另一个队列，同时保持所有上下文和身份信息与原始消息相同。
我试图破译在线文档，并尝试了 MQC.MQOO_PASS_ALL_CONTEXT 和 MQOO_SAVE_ALL_CONTEXT 在打开队列中的所有组合，以及 MQC.MQPMO_PASS_ALL_CONTEXT 投入调用，无济于事。我尝试将 MQPutMessageOptions.ContextReference 设置为源和 目标队列，但我继续收到异常，MQRC_CONTEXT_HANDLE_ERROR 或 MQRC_OPTIONS_ERROR，而且我无法在在线文档中找到足够的信息来确定问题。
我使用的是运行时版本 v2.0.50727，amqmdnet.dll 的版本 7.5.0.1。如果有人知道我需要使用的正确打开和/或放置消息选项设置，我将不胜感激。谢谢。
***** 第二次更新 *****
这是一个非常简单的 gui 程序来测试类，我得到了相同的结果:
public partial class frmMain : Form
{
// Simple test - all data hard-coded
string sourceQStr = "PETE.TQ1";
string targetQStr = "PETE.TQ2";
string targetMsgIdStr = "414D5120514D4942584330352020202028ED0155202EB302";
string connName = "localhost";
string connPort = "1414";
MQQueueManager sourceManager;
MQQueueManager targetManager;
MQQueue sourceQueue;
MQQueue targetQueue;
MQMessage msg = new MQMessage();
MQGetMessageOptions gmo = new MQGetMessageOptions();
MQPutMessageOptions pmo = new MQPutMessageOptions();
public frmMain()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void txtPassword_Validating(object sender, CancelEventArgs e)
{
if (txtPassword.Text.Trim() != string.Empty)
{
if (LoginUser())
btnTest.Focus();
else
txtUserId.Focus();
}
}
public void LogoutUser()
{
txtUserId.Text = "";
txtPassword.Text = "";
btnTest.Enabled = false;
}
public bool LoginUser()
{
bool OK = ValidateUserAndPassword();
if (OK)
{
btnTest.Enabled = true;
}
else LogoutUser();
return OK;
}
private bool ValidateUserAndPassword()
{
if ((txtUserId.Text.Trim() == string.Empty) || (txtPassword.Text.Trim() == string.Empty))
return false;
try
{
bool _passwordValid = false;
ContextOptions options = ContextOptions.SimpleBind | ContextOptions.SecureSocketLayer;
using (PrincipalContext pc = new PrincipalContext(ContextType.Domain, "UP"))
{
_passwordValid = pc.ValidateCredentials
(txtUserId.Text.Trim(), txtPassword.Text.Trim(), options);
}
if (!_passwordValid)
MessageBox.Show("Invalid username / password", "Invalid",
MessageBoxButtons.OK, MessageBoxIcon.Error);
return _passwordValid;
}
catch (PrincipalServerDownException pex)
{
string msg = pex.Message.Insert(pex.Message.IndexOf("server"), "Authentication ");
MessageBox.Show(msg, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return false;
}
}
private void btnTest_Click(object sender, EventArgs e)
{
try
{
SetupObjects();
sourceQueue.Get(msg, gmo);
targetQueue.Put(msg, pmo);
sourceManager.Commit();
targetManager.Commit();
MessageBox.Show("Test appears successful - verify with MQ Explorer","OK",
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
catch (Exception ex) // MQRC_CONTEXT_HANDLE_ERROR is always thrown
{
MessageBox.Show("Error: " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
sourceManager.Backout();
targetManager.Backout();
}
}
private void btnClose_Click(object sender, EventArgs e)
{
this.Close();
}
/************************************** Utiility methods *****************************************/
private void SetupObjects()
{
// set up objects
string connectName = connName + "(" + connPort + ")";
int ConnOptions = MQC.MQCNO_HANDLE_SHARE_BLOCK;
sourceManager = new MQQueueManager("", ConnOptions, "CHANNEL1", connectName);
targetManager = new MQQueueManager("", ConnOptions, "CHANNEL1", connectName);
MQEnvironment.UserId = txtUserId.Text.Trim();
MQEnvironment.Password = txtPassword.Text.Trim();
int options =
MQC.MQOO_INPUT_SHARED + MQC.MQOO_FAIL_IF_QUIESCING +
MQC.MQOO_SAVE_ALL_CONTEXT + MQC.MQOO_INQUIRE;
sourceQueue = sourceManager.AccessQueue
(sourceQStr, options, sourceManager.Name, null, txtUserId.Text.Trim());
options =
MQC.MQOO_OUTPUT + MQC.MQOO_FAIL_IF_QUIESCING +
MQC.MQOO_PASS_ALL_CONTEXT + MQC.MQOO_INQUIRE;
targetQueue = targetManager.AccessQueue
(targetQStr, options, targetManager.Name, null, txtUserId.Text.Trim());
int i = 0;
try
{
i = sourceQueue.CurrentDepth;
}
catch (Exception ex)
{
MessageBox.Show("Exception: " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
gmo.Options = MQC.MQGMO_COMPLETE_MSG + MQC.MQGMO_FAIL_IF_QUIESCING +
MQC.MQGMO_NO_WAIT + MQC.MQGMO_SYNCPOINT;
pmo.Options = MQC.MQPMO_PASS_ALL_CONTEXT +
MQC.MQPMO_SYNCPOINT + MQC.MQPMO_SYNC_RESPONSE;
pmo.ContextReference = sourceQueue;
msg.MessageId = StringToByteArray(targetMsgIdStr);
}
public byte[] StringToByteArray(String hex)
{
hex = hex.Trim();
int NumberChars = hex.Length;
if ((NumberChars % 2) != 0)
{
hex = "0" + hex;
NumberChars++;
}
byte[] bytes = new byte[NumberChars / 2];
for (int i = 0; i < NumberChars; i += 2)
bytes[i / 2] = StringToByte(hex.Substring(i, 2));
return bytes;
}
public byte StringToByte(string hexDigits)
{
if (hexDigits.Length != 2)
return 0;
int high = hexValue(hexDigits[0]);
int low = hexValue(hexDigits[1]);
return (byte)(((high << 4) & 240) | (low & 15));
}
public int hexValue(char c)
{
int retval = 0;
if (c > '9')
retval = ((int)c) - 55;
else
retval = ((int)c) - 48;
return retval;
}
}
GUI 仅提示输入用户名和密码(使用 LDAP 调用验证)，然后启用运行 btnTest_Click 方法的“测试”按钮。我仍然遇到相同的异常 (MQRC_CONTEXT_HANDLE_ERROR)，即使我已经使用了所有指定的打开和获取消息选项。
最佳答案
添加到 Morag 的回答中，这里是移动带有上下文的消息的片段。我还使用 SYNC_POINT 来确保在消息成功放入目标队列后从源队列中删除消息。
/// <summary>
/// Moves messages from one queue to another with context
/// </summary>
public void moveMessagesWithContext()
{
MQQueueManager qmSource = null;
MQQueueManager qmDestination = null;
MQQueue qSource = null;
MQQueue qDestination = null;
Hashtable htSource = null;
Hashtable htDestination = null;
try
{
htSource = new Hashtable();
htDestination = new Hashtable();
htSource.Add(MQC.TRANSPORT_PROPERTY, MQC.TRANSPORT_MQSERIES_MANAGED);
htSource.Add(MQC.HOST_NAME_PROPERTY, "localhost");
htSource.Add(MQC.PORT_PROPERTY, 2020);
htSource.Add(MQC.CHANNEL_PROPERTY, "A_QM_SVRCONN");
qmSource = new MQQueueManager("A_QM", htSource);
qSource = qmSource.AccessQueue("Q_SOURCE", MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_FAIL_IF_QUIESCING | MQC.MQOO_SAVE_ALL_CONTEXT);
htDestination.Add(MQC.TRANSPORT_PROPERTY, MQC.TRANSPORT_MQSERIES_MANAGED);
htDestination.Add(MQC.HOST_NAME_PROPERTY, "localhost");
htDestination.Add(MQC.PORT_PROPERTY, 3030);
htDestination.Add(MQC.CHANNEL_PROPERTY, "B_QM_SVRCONN");
qmDestination = new MQQueueManager("B_QM", htDestination);
qDestination = qmDestination.AccessQueue("Q_DESTINATION", MQC.MQOO_OUTPUT | MQC.MQOO_FAIL_IF_QUIESCING | MQC.MQOO_PASS_ALL_CONTEXT);
MQMessage msgSource = new MQMessage();
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.Options |= MQC.MQGMO_SYNCPOINT;
qSource.Get(msgSource,gmo);
if (msgSource != null)
{
MQMessage msgDestination = new MQMessage();
MQPutMessageOptions pmo = new MQPutMessageOptions();
pmo.ContextReference = qSource;
qDestination.Put(msgSource, pmo);
qmSource.Commit();
}
}
catch (MQException mqEx)
{
qmSource.Backout();
Console.WriteLine(mqEx);
}
catch (Exception otherEx)
{
Console.WriteLine(otherEx);
}
}
关于c# - Websphere MQ - 在 .NET 中从一个队列移动到另一个队列时保持消息上下文和身份，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/29433425/