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UTF-8到acsii的转换（让自己的C++程序支持多语言）

2009-07-23 11:10 549 查看

　我的思路是这样的：在配置文件（基本上使用XML格式）中采用UTF-8编码，这样世界上的任何文字就都可以显示了。但是如果直接将配置内容读出并显示，在你的C++程序里面肯定是乱码，那么怎么解决呢？步骤如下（直接看代码吧）

　　char szUTF8 [] = {0xE4,0XBB,0XB7,0XE5,0X80,0XBC};//是汉语的价值两个字

　　int nLen = MultiByteToWideChar( CP_UTF8, 0, szUTF8, -1, NULL, NULL );//得到UTF8编码的字符串长度，是2

　　LPWSTR lpwsz = new WCHAR[nLen];

　　MultiByteToWideChar( CP_UTF8, 0, szUTF8, -1, lpwsz, nLen );//转换的结果是UCS2格式的价值两个字

　　int nLen1 = WideCharToMultiByte( CP_ACP, 0, lpwsz, nLen, NULL, NULL, NULL, NULL );

　　LPSTR lpsz = new CHAR[nLen1];

　　WideCharToMultiByte( CP_ACP, 0, lpwsz, nLen, lpsz, nLen1, NULL, NULL );//转换完毕，得到了在我的机器上的"价值"两个字的二进制编码0xbc 0xdb 0xd6 0xb5

　　delete [] lpwsz; delete [] lpsz;

以下为原创

下面是我程序中用到之处：

C++服务器端与C#客户端进行SOCKET通信,需要编码转换。

C++服务器端（对接受到的UTF-8码转换成acsii）：

#include <windows.h>

#pragma comment(lib, "winmm.lib")

#pragma comment(lib, "wsock32.lib")

将用于SOCKET通信的以上三行代码放到StdAfx.h中。

#include "stdafx.h"

#include "Winsock2.h"

#include "stdio.h"

void CSocketTestDlg::OnButton1()

{

WORD wVersionRequested;

WSADATA wsaData;

int err;

wVersionRequested = MAKEWORD( 1, 1 );

err = WSAStartup( wVersionRequested, &wsaData );

if ( err != 0 ) {

return;

}

if ( LOBYTE( wsaData.wVersion ) != 1 ||

HIBYTE( wsaData.wVersion ) != 1 ) {

WSACleanup( );

return;

}

SOCKET sockSrv=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

SOCKADDR_IN addrSrv;

addrSrv.sin_addr.S_un.S_addr=htonl(INADDR_ANY);

addrSrv.sin_family=AF_INET;

addrSrv.sin_port=htons(1000);

bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));

listen(sockSrv,5);

SOCKADDR_IN addrClient;

int len=sizeof(SOCKADDR);

SOCKET sockConn=accept(sockSrv,(SOCKADDR*)&addrClient,&len);

char sendBuf[100];

sprintf(sendBuf,"Welcome %s to here!",inet_ntoa(addrClient.sin_addr));

send(sockConn,sendBuf,strlen(sendBuf)+1,0);

char recvBuf[50];

recv(sockConn,recvBuf,50,0);

//::AfxMessageBox(recvBuf);

DWORD dwNum = MultiByteToWideChar (CP_UTF8, 0, recvBuf, -1, NULL, 0);

LPWSTR pwText = new WCHAR[dwNum];

MultiByteToWideChar (CP_UTF8, 0, recvBuf, -1, pwText, dwNum);

int nLen1 = WideCharToMultiByte( CP_ACP, 0, pwText, dwNum, NULL, NULL, NULL, NULL );

char *pwTextz = new char[nLen1];

WideCharToMultiByte( CP_ACP, 0, pwText, dwNum, pwTextz, nLen1, NULL, NULL );

m_txt.SetWindowText(pwTextz);

if(!pwText)

{

delete []pwText;

}

if(!pwTextz)

{

delete []pwTextz;

}

m_txt.SetWindowText(pwTextz);

printf("%s/n",recvBuf);

closesocket(sockConn);

WSACleanup();

}

C#客户端（发送UTF-8码）：

两种方法实现的socket通信

1.button1流的方式，

2.button2 常规的套接字方式。

using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Net.Sockets;

using System.IO;

using System.Threading;

using System.Net;

using System.Text;

public partial class _Default : System.Web.UI.Page

{

TcpClient myclient;

private NetworkStream networkStream;

private StreamReader streamReader;

private StreamWriter streamWriter;

private UdpClient client = new UdpClient(); //客户端

private IPEndPoint serverIP;

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

try

{

myclient = new TcpClient("127.0.0.1", 1000);

}

catch

{

//MessageBox.Show("没有连接到服务器！");

return;

}

networkStream = myclient.GetStream();

streamReader = new StreamReader(networkStream);

streamWriter = new StreamWriter(networkStream);

try

{

String str = TextBox1.Text;

Encoding encoder = Encoding.UTF8;

byte[] buff = new byte[encoder.GetByteCount(str)];

int j = encoder.GetBytes(str, 0, str.Length, buff, 0);

streamWriter.WriteLine(str);

streamWriter.Flush();

string revStr = streamReader.ReadLine();

//Console.Write(revStr);

TextBox1.Text = "";

TextBox1.Text = revStr;

}

catch

{

//MessageBox.Show("没有连接到服务器！");

return;

}

streamReader.Close();

streamWriter.Close();

networkStream.Close();

}

protected void Button2_Click(object sender, EventArgs e)

{

//send("127.0.0.1","fdkas");

Socket socketTest = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

socketTest.Connect("127.0.0.1", 1000);

//byte[] test = new byte[10];

//test[0] = Byte.Parse("1");

//test[1] = Byte.Parse("2");

//test[2] = Byte.Parse("3");

//test[3] = Byte.Parse("4");

//test[4] = Byte.Parse("5");

//将页面中的字符串转换成UTF-8发送到服务器端

String str = TextBox1.Text;

Encoding encoder = Encoding.UTF8;

byte[] buff = new byte[encoder.GetByteCount(str)];

int j = encoder.GetBytes(str, 0, str.Length, buff, 0);

//NetworkStream networkStream = new NetworkStream(socketTest);

//StreamWriter streamWriter = new StreamWriter(networkStream);

socketTest.Send(buff);

}

public void send(string IP, string content)

{

serverIP = new IPEndPoint(IPAddress.Parse(IP), 1000);

byte[] mybyte = Encoding.Default.GetBytes(content);

client.Send(mybyte, mybyte.Length, serverIP);

}

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