how to convert wstring to string

#define _CRT_SECURE_NO_WARNINGS

#include <iostream>

#include <string>

#include <locale>

#include <codecvt>

#include <fstream>

#include <sstream>

#include <afxwin.h>

using namespace std;

int main()

{

	setlocale(LC_CTYPE, "chs");

	string str;

	wstring wstr = L"123呵呵呵abc";

	char cstr[100] = {0};

	sprintf(cstr, "%S", wstr.c_str());

	str = cstr;

	cout << str << endl;

}

写入文件

#include <iostream>

#include <string>

#include <locale>

#include <codecvt>

#include <fstream>

int main(int argc, char *argv[])

{

   std::wstring str = L"123,我是谁？我爱钓鱼岛！";

   std::wstring_convert<std::codecvt_utf8<wchar_t>> conv;

   std::string narrowStr = conv.to_bytes(str);

   {

      std::ofstream ofs ("c:\\test.txt");

      ofs << narrowStr;

   }

   std::wstring wideStr = conv.from_bytes(narrowStr);

   {

      std::locale::global(std::locale("Chinese-simplified"));

      std::wofstream ofs (L"c:\\testW.txt");

      ofs << wideStr;

   }

｝

UTF8文件读取

#define _CRT_SECURE_NO_WARNINGS

#include <iostream>

#include <string>

#include <locale>

#include <codecvt>

#include <fstream>

#include <sstream>

#include <afxwin.h>

using namespace std;

int main()

{

	auto LocUtf8 = locale(locale(""),new codecvt_utf8<wchar_t>);

	wifstream wfin("test.txt");

	wfin.imbue(LocUtf8);

	wstring wstr;

	while (getline(wfin, wstr))

	{

		wcout.imbue(locale(""));

		wcout << wstr << endl;

	}

	wfin.close();

}

假如我们取到的数据是这样的：

{"ret":1,"start":"58.57.64.0","end":"58.57.95.255","country":"\u4e2d\u56fd","province":"\u5c71\u4e1c","city":"\u6f4d\u574a","district":"","isp":"\u7535\u4fe1","type":"","desc":""}

http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=58.57.91.184

那么我们改怎么样进行转化呢？

zhaoshizhong1老师的方法：

#include <cstdio>

#include <locale>

#include <iostream>

using namespace std;

#define MAXL 100

char u[]="\\u4e2d\\u56fd", *p;

wchar_t us[MAXL];

char str[MAXL];

int i;

int main()

{

	setlocale(LC_ALL, "chs");

	//_wsetlocale(LC_ALL, L"chs");

	//std::locale loc = (std::locale("Chinese-simplified"));

	i = 0;

	p = u;

	while (true)

	{

		if (1 != sscanf(p, "\\u%4hx", &us[i])) break;

		i++;

		if (i >= MAXL - 1) break;

		p += 6;

	}

	us[i] = 0;

	//wcout.imbue(loc);

	sprintf(str, "%S", us);

	//wcout << us << endl;

	cout << str << endl;

	return 0;

}

//u:[\u5c71\u4e1c]

//us:[山东]

//

巴特西

how to convert wstring to string

最新文章

热门文章