我编写了一些代码来从远程mq获取消息，但是在消息无法用于Queue之后，我与MQ断开了连接。然后，我想重新连接到MQ。我为此添加了计时器。但是它增加了开放输入的数量。没有计时器就可以重新连接吗？任何线索都可以。
代码 C＃代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using IBM.WMQ;
using System.Diagnostics;
using System.Collections;
using System.Configuration;
using System.Timers;
namespace MQMessageSender
{
public class MQTest
{
private static MQQueueManager queueManager;
private static MQMessage queueMessage;
private static MQGetMessageOptions queueGetMessageOptions;
private static MQQueue queue;
static string strReturn = "";
static string QueueName;
static string QueueManagerName;
static string ChannelInfo;
static string channelName;
static string PortNumber;
static string transportType;
static string connectionName;
static bool running = true;
public static void Main(string[] args)
{
getMessage();
}
public static void connectMQ()
{
QueueManagerName = ConfigurationManager.AppSettings["QueueManager"];
QueueName = ConfigurationManager.AppSettings["Queuename"];
ChannelInfo = ConfigurationManager.AppSettings["ChannelInformation"];
PortNumber = ConfigurationManager.AppSettings["Port"];
char[] separator = { '/' };
string[] ChannelParams;
ChannelParams = ChannelInfo.Split(separator);
channelName = ConfigurationManager.AppSettings["Channel"];
transportType = ConfigurationManager.AppSettings["TransportType"];
connectionName = ConfigurationManager.AppSettings["ConnectionName"];
queueManager = new MQQueueManager(QueueManagerName,
channelName, connectionName);
strReturn = "Connected Successfully";
// return strReturn;
}
public static void getMessage()
{
connectMQ();
queue = queueManager.AccessQueue(QueueName,
MQC.MQOO_INPUT_AS_Q_DEF + MQC.MQOO_FAIL_IF_QUIESCING);
while (running)
{
try
{
queueMessage = new MQMessage();
queueMessage.Format = MQC.MQFMT_STRING;
queueGetMessageOptions = new MQGetMessageOptions();
queue.Get(queueMessage, queueGetMessageOptions);
strReturn = queueMessage.ReadString (queueMessage.MessageLength);
//messageavailable = MQC.MQRC_NO_MSG_AVAILABLE;
// strReturn1 = strReturn + "@@@@@@@" + messageavailable;
}
catch (MQException exp)
{
strReturn = "Exception: " + exp.Message;
}
if (strReturn != "Exception: MQRC_NO_MSG_AVAILABLE")
{
string path = ConfigurationManager.AppSettings["xmlFilePath"];
string fileName = path + "MQMessage" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".xml";
System.IO.File.WriteAllText(fileName, strReturn);
}
else if (strReturn == "Exception: MQRC_NO_MSG_AVAILABLE")
{
queueManager.Disconnect();
string path = ConfigurationManager.AppSettings["logFilePath"];
string fileName = path + "MQLog" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".txt";
System.IO.File.WriteAllText(fileName, strReturn);
System.Timers.Timer aTimer = new System.Timers.Timer();
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
aTimer.Interval = 30000;
aTimer.Enabled = true;
}
else
{
queueManager.Disconnect();
string path = ConfigurationManager.AppSettings["logFilePath"];
string fileName = path + "MQLog" + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".txt";
System.IO.File.WriteAllText(fileName, strReturn);
System.Timers.Timer aTimer = new System.Timers.Timer();
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
aTimer.Interval = 30000;
aTimer.Enabled = true;
}
}
}
public static void OnTimedEvent(object source, ElapsedEventArgs e)
{
getMessage();
}
}
}
因此，在这里我使用计时器重新连接，但是它增加了打开输入的数量。请帮助
答案 0 :(得分：2)
所以我在这里使用计时器重新连接，但是它增加了打开输入的数量
那是因为您没有在再次打开队列之前关闭队列。
queueManager = new MQQueueManager(QueueManagerName, channelName, connectionName);
以这种方式使用MQQueueManager类意味着没有安全性，即SSL / TLS或安全性出口。馊主意。您应该在Hashtable中设置连接信息，并将Hashtable传递给MQQueueManager类。
此外，您应该使用“ MQGet with wait”，而不是使用计时器进行轮询。
这是一个示例C＃程序，该程序使用哈希表获取连接信息并执行“ MQGet with wait”：
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using IBM.WMQ;
/// <summary> Program Name
/// MQTest62
///
/// Description
/// This C# class will connect to a remote queue manager
/// and get messages from a queue using a managed .NET environment.
///
/// Sample Command Line Parameters
/// -h 127.0.0.1 -p 1415 -c TEST.CHL -m MQWT1 -q TEST.Q1 -u tester -x mypwd
/// </summary>
/// <author> Roger Lacroix
/// </author>
namespace MQTest62
{
public class MQTest62
{
private Hashtable inParms = null;
private Hashtable qMgrProp = null;
private System.String qManager;
private System.String inputQName;
/*
* The constructor
*/
public MQTest62()
: base()
{
}
/// <summary> Make sure the required parameters are present.</summary>
/// <returns> true/false
/// </returns>
private bool allParamsPresent()
{
bool b = inParms.ContainsKey("-h") && inParms.ContainsKey("-p") &&
inParms.ContainsKey("-c") && inParms.ContainsKey("-m") &&
inParms.ContainsKey("-q");
if (b)
{
try
{
System.Int32.Parse((System.String)inParms["-p"]);
}
catch (System.FormatException e)
{
b = false;
}
}
return b;
}
/// <summary> Extract the command-line parameters and initialize the MQ variables.</summary>
/// <param name="args">
/// </param>
/// <throws> IllegalArgumentException </throws>
private void init(System.String[] args)
{
inParms = System.Collections.Hashtable.Synchronized(new System.Collections.Hashtable(14));
if (args.Length > 0 && (args.Length % 2) == 0)
{
for (int i = 0; i < args.Length; i += 2)
{
inParms[args[i]] = args[i + 1];
}
}
else
{
throw new System.ArgumentException();
}
if (allParamsPresent())
{
qManager = ((System.String)inParms["-m"]);
inputQName = ((System.String)inParms["-q"]);
qMgrProp = new Hashtable();
qMgrProp.Add(MQC.TRANSPORT_PROPERTY, MQC.TRANSPORT_MQSERIES_MANAGED);
qMgrProp.Add(MQC.HOST_NAME_PROPERTY, ((System.String)inParms["-h"]));
qMgrProp.Add(MQC.CHANNEL_PROPERTY, ((System.String)inParms["-c"]));
try
{
qMgrProp.Add(MQC.PORT_PROPERTY, System.Int32.Parse((System.String)inParms["-p"]));
}
catch (System.FormatException e)
{
qMgrProp.Add(MQC.PORT_PROPERTY, 1414);
}
if (inParms.ContainsKey("-u"))
qMgrProp.Add(MQC.USER_ID_PROPERTY, ((System.String)inParms["-u"]));
if (inParms.ContainsKey("-x"))
qMgrProp.Add(MQC.PASSWORD_PROPERTY, ((System.String)inParms["-x"]));
System.Console.Out.WriteLine("MQTest62:");
Console.WriteLine(" QMgrName ='{0}'", qManager);
Console.WriteLine(" Output QName ='{0}'", inputQName);
System.Console.Out.WriteLine("QMgr Property values:");
foreach (DictionaryEntry de in qMgrProp)
{
Console.WriteLine(" {0} = '{1}'", de.Key, de.Value);
}
}
else
{
throw new System.ArgumentException();
}
}
/// <summary> Connect, open queue, read (browse) a message, close queue and disconnect. </summary>
///
private void testReceive()
{
MQQueueManager qMgr = null;
MQQueue inQ = null;
int openOptions = MQC.MQOO_INPUT_AS_Q_DEF + MQC.MQOO_FAIL_IF_QUIESCING;
try
{
qMgr = new MQQueueManager(qManager, qMgrProp);
System.Console.Out.WriteLine("MQTest62 successfully connected to " + qManager);
inQ = qMgr.AccessQueue(inputQName, openOptions);
System.Console.Out.WriteLine("MQTest62 successfully opened " + inputQName);
testLoop(inQ);
}
catch (MQException mqex)
{
System.Console.Out.WriteLine("MQTest62 cc=" + mqex.CompletionCode + " : rc=" + mqex.ReasonCode);
}
catch (System.IO.IOException ioex)
{
System.Console.Out.WriteLine("MQTest62 ioex=" + ioex);
}
finally
{
try
{
if (inQ != null)
inQ.Close();
System.Console.Out.WriteLine("MQTest62 closed: " + inputQName);
}
catch (MQException mqex)
{
System.Console.Out.WriteLine("MQTest62 cc=" + mqex.CompletionCode + " : rc=" + mqex.ReasonCode);
}
try
{
if (qMgr != null)
qMgr.Disconnect();
System.Console.Out.WriteLine("MQTest62 disconnected from " + qManager);
}
catch (MQException mqex)
{
System.Console.Out.WriteLine("MQTest62 cc=" + mqex.CompletionCode + " : rc=" + mqex.ReasonCode);
}
}
}
private void testLoop(MQQueue inQ)
{
bool flag = true;
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.Options |= MQC.MQGMO_WAIT | MQC.MQGMO_FAIL_IF_QUIESCING;
gmo.WaitInterval = 2500; // 2.5 seconds wait time or use MQC.MQEI_UNLIMITED to wait forever
MQMessage msg = null;
while (flag)
{
try
{
msg = new MQMessage();
inQ.Get(msg, gmo);
System.Console.Out.WriteLine("Message Data: " + msg.ReadString(msg.MessageLength));
}
catch (MQException mqex)
{
System.Console.Out.WriteLine("MQTest62 CC=" + mqex.CompletionCode + " : RC=" + mqex.ReasonCode);
if (mqex.Reason == MQC.MQRC_NO_MSG_AVAILABLE)
{
// no meesage - life is good - loop again
}
else
{
flag = false; // severe error - time to exit
}
}
catch (System.IO.IOException ioex)
{
System.Console.Out.WriteLine("MQTest62 ioex=" + ioex);
}
}
}
/// <summary> main line</summary>
/// <param name="args">
/// </param>
// [STAThread]
public static void Main(System.String[] args)
{
MQTest62 write = new MQTest62();
try
{
write.init(args);
write.testReceive();
}
catch (System.ArgumentException e)
{
System.Console.Out.WriteLine("Usage: MQTest62 -h host -p port -c channel -m QueueManagerName -q QueueName [-u userID] [-x passwd]");
System.Environment.Exit(1);
}
catch (MQException e)
{
System.Console.Out.WriteLine(e);
System.Environment.Exit(1);
}
System.Environment.Exit(0);
}
}
}