短消息相关文档大总结

Question

谁能总结出来.我就给他一百分.

Answer 1

你可以去http://www.51wireless.net看一下。

Answer 2

手机短信息SMS开发—编码，解码1、  英文编码缺省的GSM字符集为7位编码，ASCII码为8位编码，编码就是将8位ASCII编码转换为7位编码。例如：1234 编码后得到31D98C062进制表示8位编码 00110001 00110010 00110011 001101007位编码 00110001 11011001 10001100 00000110 通过例子可以看出，将ascii8位编码的Bit8去掉，依次将下7位编码的后几位逐次移到前面，形成新的8位编码。以下是C++Builder的实现代码：String __stdcall EncodeEnglish(String InputStr)
{
        int n,len,cur;
        String tempstr,returnstr;
        unsigned char mid1[2],mid2[2];
        len=InputStr.Length();
        n=0;
        for(int i=1;i<=len;i++)
        {
          if (i<len)
           {
            strcpy(mid1,InputStr.SubString(i,1).c_str());
             strcpy(mid2,InputStr.SubString(i+1,1).c_str());
             cur=(mid1[0]>>n)|((mid2[0]<<(7-n))& 0xff);
           }
           else
           {
            strcpy(mid1,InputStr.SubString(i,1).c_str());
            cur=(mid1[0]>>n)& 0x7f;
           }
           FmtStr(tempstr,"%2.2X",ARRAYOFCONST((cur)));
           returnstr=returnstr+tempstr;
         n=(n+1)%7;
           if (n==0)
                 i++;
             }return returnstr;
}2、  英文解码简单地说就是将7位字符编码转换为8为字符编码以下是C++Builder的实现代码：
int ReturnHex(int Value)
{
       switch (Value)
       {
          case 0:
                Value=0x7f;
                break;
          case 1:
               Value=0x3f;
                break;
          case 2:
                Value=0x1f;
                break;
          case 3:
                Value=0x0f;
                break;
          case 4:
                Value=0x07;
                break;
          case 5:
               Value=0x03;
                break;
          case 6:
                Value=0x01;
                break;
          case 7:
                Value=0x00;
               break;
        }
        return Value;
}String __stdcall DecodeEnglish (String InputStr)
{
        unsigned char InStr[300];
        char OutStr[300];
        String str;
        int j=0,i=0;
        int Point=0;
        int temp;
        memset(InStr,0,301);
        memset(OutStr,0,301);
        for(int i=0;i<InputStr.Length();i=i+2)
        {
                str="0x"+InputStr.SubString(i+1,2);
                InStr[i/2]=StrToInt(str);
        }
        while(j<=InputStr.Length()/2)
        {
                if(Point==0)
                    OutStr[i]=InStr[j]&ReturnHex(Point);
                else
OutStr[i]=((InStr[j]&ReturnHex(Point))<<Point)|(InStr[j-1]>>(8-Point));
                if(Point%7==0&&Point!=0)
                        Point=0;
                else
                   Point=Point+1;
               i++;
                j=i-(i/8);
       }
        OutStr[12]=((InStr[12]&0x07)<<5)|(InStr[11]>>(8-5));
        return AnsiString(OutStr);
}
3、  中文编码中文编码较为简单，就是将GB2312的中文编码转换为代码页为CP936的Unicode编码即可
以下是C++Builder的实现代码
String  EncodeChinese(String InputStr)
{
int cur;
String tempstr,returnstr;
WideString ws;
wchar_t  mid[2];
ws=WideString(InputStr);
for(int i=1;i<=ws.Length();i++)
{
wcscpy(mid,ws.SubString(i,1).c_bstr());
cur=mid[0];
FmtStr(tempstr,"%4.4X",ARRAYOFCONST((cur)));
returnstr=returnstr+tempstr;
}
return returnstr;
}4、  中文解码
将代码页为CP936的Unicode编码转换为GB2312的中文编码即可以下是C++Builder的实现代码
String  DecodeChinese(String InputStr)
{
        wchar_t Buf[300];
        for(int i=0;i<InputStr.Length();i=i+4)
        {
           Buf[i/4]=StrToInt("0x"+InputStr.SubString(i+1,4));
        }
        Buf[InputStr.Length()/4]=0;
        return WideCharToString(Buf);
}

Answer 3

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