UTF8与GBK字符编码转换

utf8与gbk字符之间的转换主要用到两个方法

WideCharToMultiByte：/view/2083430.htm?fr=aladdin

MultiByteToWideChar：/view/1907282.htm?fr=aladdin

使用这两个方法就可以成功转换。

将GBK转换成UTF8

std::string GBKtoUTF8(const std::string& str)

{

std::string strout = "";

WCHAR * strGBK;

int len = MultiByteToWideChar(CP_ACP, 0, str.c_str(), -1, NULL, 0);

strGBK = new WCHAR[len];

MultiByteToWideChar(CP_ACP, 0, str.c_str(), -1, strGBK, len);

len = WideCharToMultiByte(CP_UTF8, 0, strGBK, -1, NULL, 0, NULL, NULL);

char * strUTF8 = new char[len];

WideCharToMultiByte(CP_UTF8, 0, strGBK, -1, strUTF8, len, NULL, NULL);

//memcpy(str, strUTF8, strlen(strUTF8));

strout = strUTF8;

delete[] strGBK;

strGBK = NULL;

delete[] strUTF8;

strUTF8 = NULL;

return strout;

}

将UTF8转换成GBK

std::string UTF8toGBK(const std::string& strint)

{

std::string strout = "";

int len = MultiByteToWideChar(CP_UTF8, 0, strint.c_str(), -1, NULL, 0);

unsigned short * wszGBK = new unsigned short[len + 1];

memset(wszGBK, 0, len * 2 + 2);

MultiByteToWideChar(CP_UTF8, 0, strint.c_str(), -1, (LPWSTR)wszGBK, len);

len = WideCharToMultiByte(CP_ACP, 0, (LPWSTR)wszGBK, -1, NULL, 0, NULL, NULL);

char *szGBK = new char[len + 1];

memset(szGBK, 0, len + 1);

WideCharToMultiByte(CP_ACP,0, (LPWSTR)wszGBK, -1, szGBK, len, NULL, NULL);

//strUTF8 = szGBK;

//memcpy(strout, szGBK, strlen(szGBK));

strout = szGBK;

delete[]szGBK;

delete[]wszGBK;

return strout;

}