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    #pragma once #include <iostream> #include <string> #include <windows.h>            using namespace Std;          Class Strcoding {public:strcoding (void);                  ~strcoding (void); void utf_8togb2312 (String &pout, char *ptext, int plen),//utf_8 to gb2312 void Gb2312toutf_8 (string& pout,c Har *ptext, int plen);                           gb2312 to Utf_8 string UrlGB2312 (char * str);                             URLGB2312 encoded string UrlUTF8 (char * str);                  Urlutf8 encoded string Urlutf8decode (String str);                Urlutf8 decoding string Urlgb2312decode (string str);          urlgb2312 decoding private:void gb2312tounicode (wchar* pout,char *gbbuffer);          void Utf_8tounicode (wchar* pout,char *ptext);          void Unicodetoutf_8 (char* pout,wchar* ptext);          void UnicodeToGB2312 (char* pout,wchar uData); Char Chartoint (char CH);            Char Strtobin (char *str);            }; #include "StdAfx.h" #include ". \urlcodeing.h"//This is a class strcoding (strCoding.cpp file) strcoding::strcoding ( void) {} strcoding::~strcoding (void) {} void Strcoding::gb2312tounicode (wchar* pOut,          Char *gbbuffer) {:: MultiByteToWideChar (cp_acp,mb_precomposed,gbbuffer,2,pout,1);      Return                    } void Strcoding::utf_8tounicode (wchar* pout,char *ptext) {char* Uchar = (char *) pOut;          UCHAR[1] = ((ptext[0] & 0x0F) << 4) + ((Ptext[1] >> 2) & 0x0F);                Uchar[0] = ((ptext[1] & 0x03) << 6) + (Ptext[2] & 0x3F);      Return          } void Strcoding::unicodetoutf_8 (char* pout,wchar* ptext) {//Note WCHAR The order of the high and low characters, the lower byte in front, and the higher byte in the rear                char* Pchar = (char *) ptext; Pout[0] = (0xE0 |          ((Pchar[1] & 0xF0) >> 4)); POUT[1] = (0x80 | (PCHAR[1] & 0x0F) << 2) + ((Pchar[0] & 0xC0) >> 6); POUT[2] = (0x80 |                (Pchar[0] & 0x3F));      Return } void strcoding::unicodetogb2312 (char* pout,wchar uData) {WideCharToMultiByte (Cp_acp,null,&udata,          1,pout,sizeof (WCHAR), null,null);      Return }//Do as solution URL using char strcoding:: Chartoint (char ch) {if (ch>= ' 0 ' && ch<= ' 9 ') return (char)              (ch-' 0 ');              if (ch>= ' a ' && ch<= ' F ') return (char) (ch-' a ' +10);              if (ch>= ' a ' && ch<= ' F ') return (char) (ch-' a ' +10);      return-1;              } Char Strcoding::strtobin (char *str) {char tempword[2];                    Char CHN;                         Tempword[0] = Chartoint (str[0]);                         Make the B to one--00001011 tempword[1] = Chartoint (str[1]); Make the 0 to 0--00000000 CHN = (Tempword[0] << 4) |TEMPWORD[1];      To change the BO to 10110000 return CHN;           }//utf_8 to gb2312 void strcoding::utf_8togb2312 (String &pout, char *ptext, int plen) {           Char buf[4];          char* rst = new Char[plen + (Plen >> 2) + 2];          memset (buf,0,4);                memset (Rst,0,plen + (Plen >> 2) + 2);          int i = 0;                     int j = 0; while (I < Plen) {if (* (Ptext + i) >= 0) {rst[j              + +] = ptext[i++];                                         } else {WCHAR wtemp;                                     Utf_8tounicode (&wtemp,ptext + i);                                   UnicodeToGB2312 (buf,wtemp);                  unsigned short int tmp = 0;                  TMP = Rst[j] = buf[0];                  TMP = rst[j+1] = buf[1]; TMP = rst[j+2] = buf[2];                  NEWBUF[J] = ctemp[0];                        Newbuf[j + 1] = ctemp[1];                     i + = 3;                J + = 2;         }} rst[j]= ' + ';          POut = rst;      delete []rst;          }//gb2312 to UTF-8 void Strcoding::gb2312toutf_8 (string& pout,char *ptext, int plen) {          Char buf[4];                memset (buf,0,4);                Pout.clear ();          int i = 0;                  while (I < Plen) {//If it is in English direct copy can be if (Ptext[i] >= 0) {                  Char asciistr[2]={0};                  Asciistr[0] = (ptext[i++]);              Pout.append (ASCIISTR);                  } else {WCHAR pbuffer;                        Gb2312tounicode (&pbuffer,ptext+i);                        Unicodetoutf_8 (Buf,&pbuffer);                        Pout.append (BUF);              i + = 2;  }        } return;          }//Encode str as GB2312 URL in Web page encode, English unchanged, Chinese characters double byte such as%3d%ae%88 string strcoding::urlgb2312 (char * str) {          string DD;          size_t len = strlen (str); for (size_t i=0;i<len;i++) {if (Isalnum ((BYTE) str[i]) {char TEMPB                  UFF[2];                  sprintf (Tempbuff, "%c", Str[i]);              Dd.append (Tempbuff);              } else if (Isspace ((BYTE) str[i])) {dd.append ("+");                  } else {char tempbuff[4];                  sprintf (Tempbuff, "%%%x%x", ((byte*) str) [i] >>4, ((byte*) str) [i]%16);              Dd.append (Tempbuff);      }} return DD;           }//Encode str as UTF-8 URL in Web page encode, English unchanged, kanji three bytes such as%3d%ae%88 string Strcoding::urlutf8 (char * str) {          String TT;          string DD; Gb2312toutf_8 (tt,stR, (int) strlen (str));          size_t len=tt.length (); for (size_t i=0;i<len;i++) {if (Isalnum ((BYTE) tt.at (i))) {char tem                  PBUFF[2]={0};                  sprintf (Tempbuff, "%c", (BYTE) tt.at (i));              Dd.append (Tempbuff);              } else if (Isspace ((BYTE) tt.at (i))) {Dd.append ("+");                  } else {char tempbuff[4];                  sprintf (Tempbuff, "%%%x%x", ((byte) tt.at (i)) >>4, ((byte) tt.at (i))%16);              Dd.append (Tempbuff);      }} return DD;              }//To decode the URL GB2312 string strcoding::urlgb2312decode (String str) {string output= "";              Char tmp[2];                           int I=0,idx=0,ndx,len=str.length ();            while (I<len) {if (str[i]== '% ') {tmp[0]=str[i+1];                  TMP[1]=STR[I+2];                              Output + = Strtobin (TMP);                      i=i+3;                              } else if (str[i]== ' + ') {output+= ';                      i++;                              } else{Output+=str[i];                      i++;      }} return output;                }//To decode the URL UTF8 string strcoding::urlutf8decode (String str) {string output= "";                String temp =urlgb2312decode (str);//utf_8togb2312 (output, (char *) temp.data (), strlen (Temp.data ()));            return output;   }

C + + codec URL