C++ string转utf8

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1. 普通sting类型 转UTF-8编码格式字符串
   
2. std::string RadarDataController::string_To_UTF8(const std::string & strSrc)
   
3. {
   
4.     int nwLen = ::MultiByteToWideChar(CP_ACP, 0, str.c_str(), -1, NULL, 0);
   
5. 
   
6.     wchar_t * pwBuf = new wchar_t[nwLen + 1];//一定要加1，不然会出现尾巴
   
7.     ZeroMemory(pwBuf, nwLen * 2 + 2);
   
8. 
   
9.     ::MultiByteToWideChar(CP_ACP, 0, str.c_str(), str.length(), pwBuf, nwLen);
   
10. 
    
11.     int nLen = ::WideCharToMultiByte(CP_UTF8, 0, pwBuf, -1, NULL, NULL, NULL, NULL);
    
12. 
    
13.     char * pBuf = new char[nLen + 1];
    
14.     ZeroMemory(pBuf, nLen + 1);
    
15. 
    
16.     ::WideCharToMultiByte(CP_UTF8, 0, pwBuf, nwLen, pBuf, nLen, NULL, NULL);
    
17. 
    
18.     std::string retStr(pBuf);
    
19. 
    
20.     delete []pwBuf;
    
21.     delete []pBuf;
    
22. 
    
23.     pwBuf = NULL;
    
24.     pBuf = NULL;
    
25. 
    
26.     return retStr;
    
27. }

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1. UTF-8编码格式字符串  转普通sting类型
   
2. {
   
3.     int nwLen = MultiByteToWideChar(CP_UTF8, 0, str.c_str(), -1, NULL, 0);
   
4. 
   
5.     wchar_t * pwBuf = new wchar_t[nwLen + 1];//一定要加1，不然会出现尾巴
   
6.     memset(pwBuf, 0, nwLen * 2 + 2);
   
7. 
   
8.     MultiByteToWideChar(CP_UTF8, 0, str.c_str(), str.length(), pwBuf, nwLen);
   
9. 
   
10.     int nLen = WideCharToMultiByte(CP_ACP, 0, pwBuf, -1, NULL, NULL, NULL, NULL);
    
11. 
    
12.     char * pBuf = new char[nLen + 1];
    
13.     memset(pBuf, 0, nLen + 1);
    
14. 
    
15.     WideCharToMultiByte(CP_ACP, 0, pwBuf, nwLen, pBuf, nLen, NULL, NULL);
    
16. 
    
17.     std::string retStr = pBuf;
    
18. 
    
19.     delete []pBuf;
    
20.     delete []pwBuf;
    
21. 
    
22.     pBuf = NULL;
    
23.     pwBuf = NULL;
    
24. 
    
25.     return retStr;
    
26. 
    
27. }

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