Question

我使用GSMComm Lib开发SMS Gateway应用程序。阅读消息时

SmsDeliverPdu data = (SmsDeliverPdu)pdu;
Output("Message: " + data.UserDataText);

它包含特殊字符（使用BlackBerry手机的自动文本发送）并抛出System.ArgumentException类型的异常发生并被捕获

以下是日志文件：

Type : System.ArgumentException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
Message : The value 105 is not part of the 7-bit default alphabet extension table.
Source : PDUConverter
Help link : 
ParamName : 
Data : System.Collections.ListDictionaryInternal
TargetSite : Char SevenBitExtensionToChar(Byte)
Stack Trace :    at GsmComm.PduConverter.TextDataConverter.SevenBitExtensionToChar(Byte b)
   at GsmComm.PduConverter.TextDataConverter.SevenBitToString(String s, Boolean throwExceptions)
   at GsmComm.PduConverter.PduParts.DecodeText(Byte[] userData, Byte dataCodingScheme)
   at GsmComm.PduConverter.SmsPdu.get_UserDataText()
   at GTMP.PresentationTier.Win.SMSGateway.frmSMSGateway.ShowMessage(SmsPdu pdu)
   at GTMP.PresentationTier.Win.SMSGateway.frmSMSGateway.ReadMessage()
   at GTMP.PresentationTier.Win.SMSGateway.frmSMSGateway.frmSMSGateway_Load(Object sender, EventArgs e)

如何解决这个案子？

Answer 1

解决。我使用这个正则表达式检查字符串是否包含7位字符集：

"^[A-Za-z0-9 \\r\\n@£$¥èéùìòÇØøÅå\u0394_\u03A6\u0393\u039B\u03A9\u03A0\u03A8\u03A3\u0398\u039EÆæßÉ!\"#$%&amp;'()*+,\\-./:;&lt;=&gt;?¡ÄÖÑÜ§¿äöñüà^{}\\\\\\[~\\]|\u20AC]*$";

source

代码：

public static bool IsInputContainNonGSM7BitCharacterSet(string value)
{
    string GSM_7_BIT_CHARACTER_SET = " @£$¥èéùìòÇØøÅåΔ_ΦΓΛΩΠΨΣΘΞ^{}\\[~]|€ÆæßÉ!\"#¤%&'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑÜ§¿abcdefghijklmnopqrstuvwxyzäöñüà";
    char letter = default(char);

    for (int i = 0; i < value.Length; i++)
    {
        letter = value[i];

        if (GSM_7_BIT_CHARACTER_SET.IndexOf(letter) == -1)
        {
            return true;
        }
    }
}

Answer 2

我没有使用data.UserDataText，而是使用了

TextDataConverter.SevenBitToString(TextDataConverter.OctetsToSeptetsStr((message.Data as SmsDeliverPdu).UserData), false)

GSMComm错误值105不是7位默认字母扩展表的一部分

2 个答案: