前幾天分享了分享了wcf聊天程序--wcfchat ，本文和大家一起分享利用wcf實(shí)現(xiàn)文件的傳輸。
程序運(yùn)行效果：
接收文件端：
發(fā)送文件端：連接wcf服務(wù)，選擇要傳輸?shù)奈募?br />
文件傳輸成功：
我們會(huì)在保存文件的默認(rèn)路徑：c:\documents and settings\administrator\桌面，下看到傳輸?shù)奈募?
代碼分析：
這里就不一一的闡述每一句代碼的作用了，感興趣的朋友可以下載，文后會(huì)有下載鏈接。說下值得注意的地方：
前兩天有人在百度知道中問能不能把wcf中的契約單獨(dú)封裝到一個(gè)類庫(kù)中，當(dāng)時(shí)感覺多此一舉，無意中看到把接口單獨(dú)分出去，有個(gè)很好的應(yīng)用，就是利用通道實(shí)現(xiàn)客戶端代理。
itransfer.cs
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using system;using system.collections.generic;using system.linq;using system.text;using system.servicemodel;using system.runtime.serialization;using system.threading;using system.io;namespace fileinterface{ [servicecontract] public interface itransfer { [operationcontract(action = "uploadfile")] void transferfile(filetransfermessage request);//文件傳輸 } [messagecontract] public class filetransfermessage { [messageheader(mustunderstand = true)] public string savepath;//文件保存路徑 [messageheader(mustunderstand = true)] public string filename;//文件名稱 [messagebodymember(order = 1)] public stream filedata;//文件傳輸時(shí)間 }} |
利用通道創(chuàng)建客戶端代理：
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if (_proxy == null) { try { nettcpbinding binding = new nettcpbinding(); binding.transfermode = transfermode.streamed; binding.sendtimeout = new timespan(0, 30, 0); //利用通道創(chuàng)建客戶端代理 _proxy = channelfactory<itransfer>.createchannel(binding, new endpointaddress(cbserurl.text)); icontextchannel obj = _proxy as icontextchannel; //string s = obj.sessionid; } catch (exception ex) { messagebox.show(ex.message); return; } |
這樣，既不用添加服務(wù)引用，也不需要生成代理。
文件傳輸?shù)暮瘮?shù)不是很難，代碼如下：
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public void transferfile(filetransfermessage request) { string loginfo; program.get_ilog().log(loginfo = string.format("開始接收文件,name={0}", request.filename));//填寫日志 //文件信息 string uploadfolder = appvalue.getparam()._savedir; string savapath = request.savepath; string filename = request.filename; stream sourcestream = request.filedata; filestream targetstream = null; //判斷文件是否可讀 if (!sourcestream.canread) { throw new exception("數(shù)據(jù)流不可讀!"); } if (savapath == null) savapath = @"文件傳輸\"; if (!savapath.endswith("\\")) savapath += "\\"; if (!uploadfolder.endswith("\\")) uploadfolder += "\\"; uploadfolder = uploadfolder + savapath; //創(chuàng)建保存文件夾 if (!directory.exists(uploadfolder)) { directory.createdirectory(uploadfolder); } int filesize = 0; string filepath = path.combine(uploadfolder, filename);//combine合并兩個(gè)路徑 try { //文件流傳輸 using (targetstream = new filestream(filepath, filemode.create, fileaccess.write, fileshare.none)) { //定義文件緩沖區(qū) const int bufferlen = 4096; byte[] buffer = new byte[bufferlen]; int count = 0; while ((count = sourcestream.read(buffer, 0, bufferlen)) > 0) { targetstream.write(buffer, 0, count); filesize += count; } targetstream.close(); sourcestream.close(); } } catch (exception ex) { program.get_ilog().log(loginfo + ex.message); } program.get_ilog().log(string.format("接收文件完畢 name={0},filesize={1}", request.filename, filesize)); } |
其他的代碼感興趣的朋友下載來研究吧！
