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/***********************************
函数：Utf8ToGB2312
功能：UTF-8转换为GB2312
************************************/
char* Utf8ToGB2312(const char* utf8)
{
    int len = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0);
 
    wchar_t* wstr = new wchar_t[len + 1];
    memset(wstr, 0, len + 1);
 
    MultiByteToWideChar(CP_UTF8, 0, utf8, -1, wstr, len);
    len = WideCharToMultiByte(CP_ACP, 0, wstr, -1, NULL, 0, NULL, NULL);
 
    char* str = new char[len + 1];
    memset(str, 0, len + 1);
 
    WideCharToMultiByte(CP_ACP, 0, wstr, -1, str, len, NULL, NULL);
 
    if (wstr) {
        delete[] wstr;
        wstr = NULL;
    }
    return str;
}
/***********************************
函数：GB2312ToUtf8
功能：GB2312转换为UTF-8
************************************/
char* GB2312ToUtf8(const char* gb2312)
{
    int len = MultiByteToWideChar(CP_ACP, 0, gb2312, -1, NULL, 0);
    wchar_t* wstr = new wchar_t[len + 1];
    memset(wstr, 0, len + 1);
    MultiByteToWideChar(CP_ACP, 0, gb2312, -1, wstr, len);
    len = WideCharToMultiByte(CP_UTF8, 0, wstr, -1, NULL, 0, NULL, NULL);
    char* str = new char[len + 1];
    memset(str, 0, len + 1);
    WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, len, NULL, NULL);
    if (wstr) delete[] wstr;
    return str;
}