http 遇到中文表单 转码详解编程语言

#include <string> 
#include <vector> inline BYTE toHex(const BYTE x) { return x>9?x+55:x+48; } std::string WC2UT(const wchar_t* buf) { int len=WideCharToMultiByte(CP_UTF8,0,buf,-1,NULL,0,NULL,NULL); std::vector<char> utf8(len); WideCharToMultiByte(CP_UTF8,0,buf,-1,&utf8[0],len,NULL,NULL); return std::string(&utf8[0]); } std::wstring MB2WC(const char* buf) { int len=MultiByteToWideChar(CP_ACP,0,buf,-1,NULL,0); std::vector<wchar_t> unicode(len); MultiByteToWideChar(CP_ACP,0,buf,-1,&unicode[0],len); return std::wstring(&unicode[0]); } //参数要用指针。 void URLEncode(CString* str) { std::string sln=str->GetBuffer(0); sln=WC2UT(MB2WC(sln.c_str()).c_str()); std::string sOut; for (size_t ix=0;ix<sln.size();ix++) { BYTE buf[4]; memset(buf,0,4); if (isalnum((BYTE)sln[ix])) buf[0]=sln[ix]; else if (isspace((BYTE)sln[ix])) buf[0]='+'; else { buf[0]='%'; buf[1]=toHex((BYTE)sln[ix]>>4); buf[2]=toHex((BYTE)sln[ix]%16); } sOut+=(char*)buf; } CString out=sOut.c_str(); *str=out; }