最近在研究邮箱监控，通过邮箱地址、用户名、密码、pop端口获取邮箱内容及附件，将内容和附件保存至本地文件夹中，把当前文件夹打包为zip包上传至文件服务器。
思路：
1.通过邮箱地址、用户名、密码、pop端口（pop3端口号默认110）登录邮箱
2.获取邮箱邮件数量（邮件总数），循环获取内容及附件信息
3.将内容和附件保存至本地文件夹，把当前文件夹打包为zip包上传至文件服务器
如何实现:
要遵守相应的命令协议。对于一般操作。需要先通过user 和pass的验证。验证成功后。方可执行后面的命令。
| 命令 | 描述 |
| user | 用户名 |
| pass | 密码，执行命令后可以获取到邮件数量和邮件总字节 |
| apop | 一种安全传输口令的办法，digest是md5消息摘要，执行成功导致状态转换 |
| stat | 请求服务器发回关于邮箱的统计资料，如邮件总数和总字节数 |
| uidl | 返回邮件的唯一标识符，pop3会话的每个标识符都将是唯一的 |
| list | 返回邮件数量和每个邮件的大小 |
| retr | 返回由参数标识的邮件的全部文本，retr+5 表示返回前5封邮件的文本，但是返回回来的信息是乱码，需要转码 |
| dele | 服务器将由参数标识的邮件标记为删除，由quit命令执行 |
| rset | 服务器将重置所有标记为删除的邮件，用于撤消dele命令 |
| top | 服务器将返回由参数标识的邮件前n行内容，n必须是正整数 |
| noop | 服务器返回一个肯定的响应，不做任何操作。 |
| quit | 退出 |
如上面的命令为了更方便的理解，也可参考地址：http://www.ietf.org/rfc/rfc1939.txt（虽然都是仔细看命令还是可以理解大概意思）。请看下面代码: 对于每次的sr.Readline 如果获取成功了。在读取的字符串里面都会有一个"+OK"，可以通过判断字符串是否包含OK，来确定是否命令操作成功。其次对于RERT命令来说。返回的是乱码。需要转码。
1 #region 登陆邮箱 2 private void Connect() 3 { 4 Byte[] outbytes; 5 string input; 6 string readuser = string.Empty; 7 string readpwd = string.Empty; 8 try 9 { 10 TcpClient tcpc = new TcpClient(p_Address, Convert.ToInt32(p_Port)); 11 ns = tcpc.GetStream(); 12 sr = new StreamReader(ns); 13 StatusMsg = sr.ReadLine() + "\r"; 14 input = "USER " + p_user + CRLF; 15 outbytes = System.Text.Encoding.ASCII.GetBytes(input.ToCharArray()); 16 ns.Write(outbytes, 0, outbytes.Length); 17 StatusMsg = sr.ReadLine() + "\r"; 18 input = "PASS " + p_pwd + CRLF; 19 outbytes = System.Text.Encoding.ASCII.GetBytes(input.ToCharArray()); 20 ns.Write(outbytes, 0, outbytes.Length); 21 StatusMsg = sr.ReadLine() + "\r"; 22 if (StatusMsg.StartsWith("+OK")) 23 { 24 ErrorMessage = "连接成功..."; 25 } 26 } 27 catch(Exception ex) 28 { 29 ErrorMessage = "用户名或密码错误"; 30 } 31 } 32 #endregion 33 #region 获取邮件数目 34 /// <summary> 35 /// 获取邮件数目 36 /// </summary> 37 /// <returns>返回 int 邮件数目</returns> 38 public int GetNumberOfNewMessages() 39 { 40 Byte[] outbytes; 41 string input; 42 int countmail = 0; 43 string UId = string.Empty; 44 try 45 { 46 Connect(); 47 //"stat"向邮件服务器 表示要取邮件数目 48 input = "STAT " + CRLF; 49 //将string input转化为7位的字符，以便可以在网络上传输 50 outbytes = System.Text.Encoding.ASCII.GetBytes(input.ToCharArray()); 51 ns.Write(outbytes, 0, outbytes.Length); 52 StatusMsg = sr.ReadLine() + "\r"; 53 //将从服务器取到的数据以“”分成字符数组 54 //string[] strMessage = StatusMsg.Split(' '); 55 if (StatusMsg != null) 56 { 57 if (StatusMsg.Substring(0, 4) == "-ERR") 58 { 59 return -1; 60 } 61 } 62 string[] tmpArray; 63 //将从服务器取到的数据以“”分成字符数组 64 tmpArray = StatusMsg.Split(' '); 65 #region 保存邮件标识 66 for (int i = 1; i < Convert.ToInt32(tmpArray[1]) + 1; i++) 67 { 68 //"uidl"向邮件服务器返回邮件的唯一标识符 69 input = "UIDL " + i + CRLF; 70 outbytes = System.Text.Encoding.ASCII.GetBytes(input.ToCharArray()); 71 ns.Write(outbytes, 0, outbytes.Length); 72 UId = sr.ReadLine() + "\r"; 73 //dic.Add(Convert.ToString(i), UId.Split(' ')[2].TrimEnd('\r')); 74 string filePath = "D:\\MailMsg\\"; 75 string fileName = "UIdData.csv"; 76 if (!Directory.Exists(filePath)) 77 { 78 Directory.CreateDirectory(filePath); 79 } 80 if (!File.Exists(filePath + fileName)) 81 { 82 using (var fs = new FileStream(filePath + fileName, FileMode.Create, FileAccess.Write)) 83 { 84 fs.Close(); 85 StreamWriter sw = new StreamWriter(filePath + fileName, true, System.Text.Encoding.Default); 86 sw.Write("ID,UId,Flag" + "\r\n"); 87 sw.Write("{0},{1},{2}" + "\r\n", UId.Split(' ')[1], UId.Split(' ')[2].TrimEnd('\r'), "1"); 88 sw.Flush(); 89 sw.Close(); 90 sw.Dispose(); 91 } 92 } 93 else 94 { 95 using (var fs = new FileStream(filePath + fileName, FileMode.Append, FileAccess.Write)) 96 { 97 fs.Close(); 98 string[] fileData = File.ReadAllLines(filePath + fileName, System.Text.Encoding.Default); 99 if (fileData.Length <= i) 100 { 101 StreamWriter fileWriter = new StreamWriter(filePath + fileName, true, System.Text.Encoding.Default); 102 fileWriter.WriteLine("{0},{1},{2}", UId.Split(' ')[1], UId.Split(' ')[2].TrimEnd('\r'), "1"); 103 fileWriter.Flush(); 104 fileWriter.Close(); 105 } 106 else 107 { 108 ReadMailNum++; 109 } 110 } 111 } 112 } 113 #endregion 114 //断开与服务器的连接 115 Disconnect(); 116 //取到的表示邮件数目 117 countmail = Convert.ToInt32(tmpArray[1]); 118 //未读邮件数 119 int count = countmail - ReadMailNum; 120 return countmail; 121 } 122 catch (Exception ex) 123 { 124 Console.WriteLine("无法连接到邮件服务器！"); 125 return -1;//表示读邮件时 出错，将接收邮件的线程 阻塞5分钟 126 } 127 } 128 # endregion 129 #region 获取所有的新邮件内容 130 /// <summary> 131 /// 获取所有新邮件 132 /// </summary> 133 /// <returns> 返回 ArrayList</returns> 134 //public ArrayList GetNewMessages() 135 public void GetNewMessages() 136 { 137 bool blag = false; 138 int MailNumber = GetNumberOfNewMessages();//邮箱中的未读邮件数 139 ArrayList newmsgs = new ArrayList(); 140 try 141 { 142 TcpClient tcpc = new TcpClient(p_Address, Convert.ToInt32(p_Port)); 143 Connect(); 144 #region 获取邮件内容 145 //没有新邮件 146 if (MailNumber == ReadMailNum) 147 ErrorMessage = "邮箱中没有未读邮件！"; 148 else 149 { 150 #region 获取邮件所有内容 151 for (int n = 1; n < MailNumber + 1; n++) 152 { 153 ArrayList msglines = GetRawMessage(tcpc, n); 154 string msgsubj = GetMessageSubject(msglines).Trim(); 155 msg = new MailMessage(); 156 //首先判断Substring是什么编码（"=?gb2312?B?"或者"=?gb2312?Q?"），然后转到相应的解码方法，实现解码 157 //如果是"=?gb2312?B?"，转到DecodeBase64（）进行解码 158 if (msgsubj.Length > 11) 159 { 160 //base64编码 161 if (msgsubj.Substring(0, 11) == "=?gb2312?B?") 162 { 163 blag = true; 164 msgsubj = msgsubj.Substring(11, msgsubj.Length - 13); 165 msg.Subject = DecodeBase64(msgsubj); 166 } 167 else if (msgsubj.Substring(0, 12) == "=?gb18030?B?") 168 { 169 blag = true; 170 msgsubj = msgsubj.Substring(12, msgsubj.Length - 14); 171 msg.Subject = DecodeBase64(msgsubj); 172 } 173 else 174 { 175 string strMsg = string.Empty; 176 blag = true; 177 for (int i = 0; i < msgsubj.Split(' ').Length; i++) 178 { 179 if (msgsubj.Split(' ')[i] == "") 180 continue; 181 else 182 strMsg += msgsubj.Split(' ')[i].Trim().Substring(10, msgsubj.Split(' ')[i].Length - 12); 183 } 184 msg.Subject = base64Utf8Decode(strMsg); 185 } 186 //如果是"=?gb2312?Q?"编码，先得取到被编码的部分，字符如果没编码就不转到解码方法 187 if (msgsubj.Length > 11) 188 { 189 if (msgsubj.Substring(0, 11) == "=?gb2312?Q?") 190 { 191 blag = true; 192 msgsubj = msgsubj.Substring(11, msgsubj.Length - 13); 193 string text = msgsubj; 194 string str = string.Empty; 195 string decodeq = string.Empty; 196 while (text.Length > 0) 197 { 198 //判断编码部分是否开始 199 if (text.Substring(0, 1) == "=") 200 { 201 decodeq = text.Substring(0, 3); 202 text = text.Substring(3, text.Length - 3); 203 //当出现编码部分时，则取出连续的编码部分 204 while (text.Length > 0) 205 { 206 if (text.Substring(0, 1) == "=") 207 { 208 decodeq += text.Substring(0, 3); 209 text = text.Substring(3, text.Length - 3); 210 } 211 else 212 { 213 break; 214 } 215 } 216 //将连续的编码进行解码 217 str += DecodeQ(decodeq); 218 } 219 //如果该字节没编码，则不用处理 220 else 221 { 222 str += text.Substring(0, 1); 223 text = text.Substring(1, text.Length - 1); 224 } 225 } 226 //用空格代替subject中的“0”,以便能取道全部的内容 227 msg.Subject = str.Replace("0", " "); 228 } 229 } 230 if (blag == false) 231 { 232 msg.Subject = msgsubj.Replace("0", " "); 233 } 234 } 235 else 236 { 237 msg.Subject = msgsubj.Replace("0", " "); 238 } 239 blag = false; 240 //取发邮件者的邮件地址 241 msg.From = new MailAddress(GetMessageFrom(msglines)); 242 //取邮件正文 243 string msgbody = GetMessageBody(msglines); 244 //msg.Body = msgbody; 245 newmsgs.Add(msg); 246 SaveMailContent2File(msg);//保存邮件内容 247 } 248 if (newmsgs != null) 249 { 250 ErrorMessage = "获取邮件内容和附件完成！"; 251 } 252 #endregion 253 } 254 #endregion 255 //断开与服务器的连接 256 Disconnect(); 257 //return newmsgs; 258 } 259 catch (Exception ex) 260 { 261 ErrorMessage = "读取邮件出错，请重试"; 262 //return newmsgs; 263 } 264 } 265 #endregion 266 #region 从服务器读邮件信息 267 private ArrayList GetRawMessage(TcpClient tcpc, int messagenumber) 268 { 269 Byte[] outbytes; 270 string input; 271 string line = string.Empty; 272 string MailMsg = string.Empty; 273 string MailContent = string.Empty; 274 //"retr"处理 server返回邮件的全部文本 275 input = "RETR " + messagenumber.ToString() + CRLF; 276 outbytes = System.Text.Encoding.ASCII.GetBytes(input.ToCharArray()); 277 ns.Write(outbytes, 0, outbytes.Length); 278 MailMsg = sr.ReadLine(); 279 if (MailMsg[0] != '-') 280 { 281 //不断地读取邮件内容，只到结束标志：英文句号 282 while (MailMsg != ".") 283 { 284 MailContent += MailMsg + "\r"; 285 MailMsg = sr.ReadLine(); 286 } 287 } 288 ArrayList msglines = new ArrayList(); 289 msglines.Add(MailContent); 290 return msglines; 291 } 292 #endregion 293 #region 获取邮件标题 294 private string GetMessageSubject(ArrayList msglines) 295 { 296 IEnumerator msgenum = msglines.GetEnumerator(); 297 string subStr = string.Empty; 298 while (msgenum.MoveNext()) 299 { 300 string line = (string)msgenum.Current.ToString(); 301 for (int i = 0; i < line.Split('\r').Length; i++) 302 { 303 if (line.Split('\r')[i].Length > 0) 304 { 305 if (line.Split('\r')[i].Split(':')[0] == "Subject") 306 { 307 subStr += line.Split('\r')[i].Substring(8, line.Split('\r')[i].Length - 8) + " "; 308 } 309 else if (line.Split('\r')[i].StartsWith(" =?utf-8?B?")) 310 { 311 subStr += line.Split('\r')[i]; 312 } 313 } 314 } 315 } 316 return subStr; 317 } 318 #endregion 319 #region 获取邮件的发送人地址 320 private string GetMessageFrom(ArrayList msglines) 321 { 322 IEnumerator msgenum = msglines.GetEnumerator(); 323 while (msgenum.MoveNext()) 324 { 325 string line = (string)msgenum.Current; 326 for (int i = 0; i < line.Split('\r').Length; i++) 327 { 328 if (line.Split('\r')[i].Split(':')[0] == "From") 329 { 330 return line.Split('\r')[i].Split(':')[1].Trim(' ').Split(' ')[1].Trim('<', '>'); 331 } 332 } 333 } 334 return "None"; 335 } 336 #endregion 337 #region 获取邮件正文 和 附件 338 private string GetMessageBody(ArrayList msglines) 339 { 340 string body = ""; 341 string line = " "; 342 IEnumerator msgenum = msglines.GetEnumerator(); 343 while (msgenum.MoveNext()) 344 { 345 line = (string)msgenum.Current; 346 string _ReturnText = GetMailText(line); 347 body = body + _ReturnText + CRLF; 348 } 349 return body; 350 } 351 /// <summary> 352 /// 获取文字主体 353 /// </summary> 354 /// <param name="p_Mail"></param> 355 /// <returns></returns> 356 public string GetMailText(string p_Mail) 357 { 358 string _ConvertType = GetTextType(p_Mail, "Content-Type: ", ";"); 359 if (_ConvertType.Length == 0) 360 { 361 _ConvertType = GetTextType(p_Mail, "Content-Type: ", "\r"); 362 } 363 int _StarIndex = -1; 364 int _EndIndex = -1; 365 string _ReturnText = ""; 366 string _Transfer = ""; 367 string _Boundary = ""; 368 string _EncodingName = GetTextType(p_Mail, "charset=", "\r").Trim('"').TrimEnd('"', ';', '\r'); 369 System.Text.Encoding _Encoding = System.Text.Encoding.Default; 370 if (_EncodingName != "") _Encoding = System.Text.Encoding.GetEncoding(_EncodingName); 371 switch (_ConvertType) 372 { 373 case "text/html;": 374 _Transfer = GetTextType(p_Mail, "Content-Transfer-Encoding: ", "\r").Trim(); 375 _StarIndex = p_Mail.IndexOf("\r\r"); 376 if (_StarIndex != -1) _ReturnText = p_Mail.Substring(_StarIndex, p_Mail.Length - _StarIndex); 377 switch (_Transfer) 378 { 379 case "8bit": 380 381 break; 382 case "quoted-printable": 383 _ReturnText = DecodeQuotedPrintable(_ReturnText, _Encoding); 384 break; 385 case "base64": 386 _ReturnText = DecodeBase64(_ReturnText, _Encoding); 387 break; 388 } 389 break; 390 case "text/plain;": 391 _Transfer = GetTextType(p_Mail, "Content-Transfer-Encoding: ", "\r").Trim(); 392 _StarIndex = p_Mail.IndexOf("\r\r"); 393 if (_StarIndex != -1) _ReturnText = p_Mail.Substring(_StarIndex, p_Mail.Length - _StarIndex); 394 switch (_Transfer) 395 { 396 case "8bit": 397 398 break; 399 case "quoted-printable": 400 _ReturnText = DecodeQuotedPrintable(_ReturnText, _Encoding); 401 break; 402 case "base64": 403 _ReturnText = DecodeBase64(_ReturnText, _Encoding); 404 msg.Body = _ReturnText; 405 break; 406 } 407 break; 408 case "multipart/alternative;": 409 _Boundary = GetTextType(p_Mail, "boundary=", "\r").Trim('"').TrimEnd('"', ';', '\r', '\r'); 410 _StarIndex = p_Mail.IndexOf("--" + _Boundary + "\r"); 411 if (_StarIndex == -1) return ""; 412 while (true) 413 { 414 _EndIndex = p_Mail.IndexOf("--" + _Boundary, _StarIndex + _Boundary.Length); 415 if (_EndIndex == -1) break; 416 _ReturnText = GetMailText(p_Mail.Substring(_StarIndex, _EndIndex - _StarIndex)); 417 _StarIndex = _EndIndex; 418 } 419 break; 420 case "multipart/mixed;": 421 _Boundary = GetTextType(p_Mail, "boundary=", "\r").Trim('"').TrimEnd('"', ';', '\r', '\r'); 422 _StarIndex = p_Mail.IndexOf("--" + _Boundary + "\r"); 423 if (_StarIndex == -1) return ""; 424 while (true) 425 { 426 _EndIndex = p_Mail.IndexOf("--" + _Boundary, _StarIndex + _Boundary.Length); 427 if (_EndIndex == -1) break; 428 _ReturnText = GetMailText(p_Mail.Substring(_StarIndex, _EndIndex - _StarIndex)); 429 _StarIndex = _EndIndex; 430 } 431 break; 432 default: 433 if (_ConvertType.IndexOf("application/") == 0) 434 { 435 string _ResultText = string.Empty; 436 _StarIndex = p_Mail.IndexOf("\r\r"); 437 if (_StarIndex != -1) _ResultText = p_Mail.Substring(_StarIndex, p_Mail.Length - _StarIndex); 438 _Transfer = GetTextType(p_Mail, "Content-Transfer-Encoding: ", "\r").Trim(); 439 string _Name = GetTextType(p_Mail, "filename=", "\r"); 440 _Name = GetReadText(_Name); 441 byte[] _FileBytes = new byte[0]; 442 string filePath = "D:\\MailMsg\\" + DateTime.Now.ToString("yyyyMMdd") + "\\" + decode + "\\"; 443 string fileName = _Name; 444 PathName = filePath + fileName; 445 switch (_Transfer) 446 { 447 case "base64": 448 _FileBytes = Convert.FromBase64String(_ResultText); 449 if (!Directory.Exists(filePath)) 450 { 451 Directory.CreateDirectory(filePath); 452 } 453 if (!File.Exists(PathName)) 454 { 455 using (var fs = new FileStream(PathName, FileMode.CreateNew)) 456 { 457 fs.Write(_FileBytes, 0, _FileBytes.Length); 458 fs.Flush(); 459 fs.Close(); 460 } 461 } 462 else 463 { 464 using (var fs = new FileStream(PathName, FileMode.Create, FileAccess.Write)) 465 { 466 fs.Write(_FileBytes, 0, _FileBytes.Length); 467 fs.Flush(); 468 fs.Close(); 469 } 470 } 471 break; 472 } 473 } 474 break; 475 } 476 return _ReturnText; 477 } 478 #endregion 479 #region 保存邮件内容到本地文件夹 480 private static void SaveMailContent2File(System.Net.Mail.MailMessage msg) 481 { 482 //将收到的邮件保存到本地，调用另一个类的保存邮件方法，不使用此功能 483 string title = msg.Subject.Trim('【', ' ').Replace('】', ' ').Replace('，', ' ').TrimEnd('>', ' ', '>', ' '); 484 string path = "D:\\MailMsg\\" + DateTime.Now.ToString("yyyyMMdd") + "\\" + title + "\\"; 485 string fileName = msg.Subject.Trim('【', ' ').Replace('】', ' ').Replace('，', ' ').TrimEnd('>', ' ', '>', ' ') + ".txt"; 486 string MailAllContent = "Subject:" + msg.Subject + CRLF + "From:" + msg.From + CRLF + "To:" + msg.To + CRLF + "Content:\r" + msg.Body;//,"mail"+n+".txt" 487 PathName = path + fileName; 488 zipPath = "D:\\MailMsg\\" + DateTime.Now.ToString("yyyyMMdd") + "\\" + title + DateTime.Now.ToString("yyyyMMddHHmmssfff") + ".zip"; 489 if (!Directory.Exists(path)) 490 { 491 Directory.CreateDirectory(path); 492 } 493 if (!File.Exists(PathName)) 494 { 495 FileStream fs = new FileStream(PathName, FileMode.CreateNew); 496 StreamWriter sw = new StreamWriter(fs); 497 sw.Write(MailAllContent); //这里是写入的内容 498 sw.Flush(); 499 sw.Close(); 500 } 501 else 502 { 503 FileStream fs = new FileStream(PathName, FileMode.Create, FileAccess.Write); 504 StreamWriter sw = new StreamWriter(fs); 505 sw.Write(MailAllContent); //这里是写入的内容 506 sw.Flush(); 507 sw.Close(); 508 } 509 CreateZip(path, zipPath); 510 } 511 #endregion 512 #region 打包获取的邮件内容及附件 513 /// <summary> 514 /// 压缩文件 515 /// </summary> 516 /// <param name="sourceFilePath"></param> 517 /// <param name="destinationZipFilePath"></param> 518 public static void CreateZip(string sourceFilePath, string destinationZipFilePath) 519 { 520 if (sourceFilePath[sourceFilePath.Length - 1] != System.IO.Path.DirectorySeparatorChar) 521 sourceFilePath += System.IO.Path.DirectorySeparatorChar; 522 ZipOutputStream zipStream = new ZipOutputStream(File.Create(destinationZipFilePath)); 523 zipStream.SetLevel(6); // 压缩级别 0-9 524 CreateZipFiles(sourceFilePath, zipStream, sourceFilePath); 525 zipStream.Finish(); 526 zipStream.Close(); 527 UploadFile(destinationZipFilePath, destinationZipFilePath.Substring(destinationZipFilePath.LastIndexOf("\\") + 1)); 528 } 529 530 /// <summary> 531 /// 递归压缩文件 532 /// </summary> 533 /// <param name="sourceFilePath">待压缩的文件或文件夹路径</param> 534 /// <param name="zipStream">打包结果的zip文件路径（类似 D:\WorkSpace\a.zip）,全路径包括文件名和.zip扩展名</param> 535 /// <param name="staticFile"></param> 536 private static void CreateZipFiles(string sourceFilePath, ZipOutputStream zipStream, string staticFile) 537 { 538 Crc32 crc = new Crc32(); 539 string[] filesArray = Directory.GetFileSystemEntries(sourceFilePath); 540 foreach (string file in filesArray) 541 { 542 if (Directory.Exists(file)) //如果当前是文件夹，递归 543 { 544 CreateZipFiles(file, zipStream, staticFile); 545 } 546 else //如果是文件，开始压缩 547 { 548 FileStream fileStream = File.OpenRead(file); 549 byte[] buffer = new byte[fileStream.Length]; 550 fileStream.Read(buffer, 0, buffer.Length); 551 string tempFile = file.Substring(staticFile.LastIndexOf("\\") + 1); 552 ZipEntry entry = new ZipEntry(tempFile); 553 //设置wei unicode编码 554 entry.IsUnicodeText = true; 555 entry.DateTime = DateTime.Now; 556 entry.Size = fileStream.Length; 557 fileStream.Close(); 558 crc.Reset(); 559 crc.Update(buffer); 560 entry.Crc = crc.Value; 561 zipStream.PutNextEntry(entry); 562 zipStream.Write(buffer, 0, buffer.Length); 563 } 564 } 565 } 566 #endregion 567 #region 将打包的zip文件发送到文件服务器上 568 /// <summary> 569 /// 将本地文件上传到指定的服务器(HttpWebRequest方法) 570 /// </summary> 571 /// <param name="fileNamePath">要上传的本地文件（全路径）</param> 572 /// <param name="fileName">文件名称</param> 573 /// <returns></returns> 574 public static string UploadFile(string fileNamePath, string fileName) 575 { 576 #region 获取签名 577 string timeStamp = DateTime.Now.Ticks.ToString("x"); 578 string boundary = "---------------------------" + DateTime.Now.Ticks.ToString("x"); 579 byte[] boundarybytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n"); 580 byte[] endbytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n"); 581 string returnValue = string.Empty; 582 string returnData = string.Empty; 583 string returnMsgItems = string.Empty; 584 string fsSize = string.Empty; 585 string sReturnString = string.Empty; 586 FileInfo f = new FileInfo(fileNamePath); 587 fsSize = Convert.ToString(System.Math.Ceiling(f.Length / 1024.0));// + " KB"; 588 System.Net.HttpWebRequest httpReq = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(new Uri("http://172.30.254.89:8080/objectstorecloud/files/sign/v2?org_id=20000001&source_code=01010&file_names=" + fileName + "&file_types=pdf&file_sizes=" + fsSize + "&isThumbnail=N&http_method=post")); 589 httpReq.Method = "GET"; 590 httpReq.AllowWriteStreamBuffering = false; 591 httpReq.Timeout = 300000; 592 httpReq.ContentType = "multipart/form-data; boundary=" + timeStamp; 593 System.Net.WebResponse wrp = (System.Net.HttpWebResponse)httpReq.GetResponse(); 594 System.IO.StreamReader sr1 = new System.IO.StreamReader(wrp.GetResponseStream(), System.Text.Encoding.GetEncoding("UTF-8")); 595 string strResult = sr1.ReadToEnd(); 596 Dictionary<string, object> Jm = JsonConvert.DeserializeObject<Dictionary<string, object>>(strResult); 597 #endregion 598 #region 通过签名中返回的URL上传文件 599 System.Net.HttpWebRequest Req = (System.Net.HttpWebRequest)System.Net.WebRequest.Create(Jm["url"].ToString().Replace("\"", "").Replace("[", "").Replace("]", "").Split('?')[0].Trim()); 600 Req.ContentType = "multipart/form-data; boundary=" + boundary;// 601 Req.Method = "POST"; 602 Req.KeepAlive = false; 603 Req.Credentials = CredentialCache.DefaultCredentials; 604 string url = Jm["url"].ToString().Trim('[', ']', '\r', '\n', '"', ' '); 605 Req.Headers.Add("Authorization", url.Substring(url.IndexOf("sign=") + 5)); 606 //key/value 607 string formdataTemplate = "Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}"; 608 string form = string.Format(formdataTemplate, "key", "01010/" + fileName + ".pdf"); 609 byte[] postFormBytes = System.Text.Encoding.UTF8.GetBytes(form); 610 //头信息 611 string dataFormat = "Content-Disposition: form-data; name=\"{0}\";filename=\"{1}\"\r\nContent-Type:application/octet-stream\r\n\r\n"; 612 string header = string.Format(dataFormat, "file", Path.GetFileName(fileNamePath) + ".pdf"); 613 byte[] postHeaderBytes = System.Text.Encoding.UTF8.GetBytes(header); 614 //文件 615 FileStream fs = new FileStream(fileNamePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); 616 BinaryReader br = new BinaryReader(fs); 617 //结束边界 618 byte[] boundaryBytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" + boundary + "--\r\n"); 619 try 620 { 621 //每次上传4k 622 int bufferLength = 4096; 623 byte[] buffer = new byte[bufferLength]; 624 //已上传的字节数 625 long offset = 0; 626 int size = br.Read(buffer, 0, bufferLength); 627 Stream postStream = Req.GetRequestStream(); 628 //发送form 629 postStream.Write(boundarybytes, 0, boundarybytes.Length); 630 postStream.Write(postFormBytes, 0, postFormBytes.Length); 631 //发送请求头部消息 632 postStream.Write(boundarybytes, 0, boundarybytes.Length); 633 postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length); 634 while (size > 0) 635 { 636 postStream.Write(buffer, 0, size); 637 offset += size; 638 size = br.Read(buffer, 0, bufferLength); 639 } 640 //添加尾部边界 641 postStream.Write(boundaryBytes, 0, boundaryBytes.Length); 642 postStream.Close(); 643 fs.Close(); 644 br.Close(); 645 //读取服务器端返回的消息 646 using (System.Net.WebResponse webRespon = (System.Net.HttpWebResponse)Req.GetResponse()) 647 { 648 Stream s = webRespon.GetResponseStream(); 649 StreamReader sr = new StreamReader(s, System.Text.Encoding.UTF8); 650 sReturnString = sr.ReadToEnd(); 651 if (string.IsNullOrEmpty(sReturnString)) 652 { 653 foreach (string head in webRespon.Headers.AllKeys) 654 { 655 sReturnString = string.Concat(sReturnString, string.Format("{0} : {1}\r\n", head, webRespon.Headers[head])); 656 } 657 } 658 } 659 } 660 catch (Exception ex) 661 { 662 System.Diagnostics.Debug.WriteLine("文件传输异常： " + ex.Message); 663 returnValue = "文件传输异常！"; 664 } 665 finally 666 { 667 fs.Close(); 668 fs.Dispose(); 669 br.Close(); 670 br.Dispose(); 671 } 672 #endregion 673 return sReturnString; 674 } 675 #endregion 676 #region 将文件服务器返回的文件ID传递给XXX方法中 677 #endregion 678 #region 获取类型（正则） 679 /// <summary> 680 /// 获取类型（正则） 681 /// </summary> 682 /// <param name="p_Mail">原始文字</param> 683 /// <param name="p_TypeText">前文字</param> 684 /// <param name="p_End">结束文字</param> 685 /// <returns>符合的记录</returns> 686 public string GetTextType(string p_Mail, string p_TypeText, string p_End) 687 { 688 System.Text.RegularExpressions.Regex _Regex = new System.Text.RegularExpressions.Regex(@"(?<=" + p_TypeText + ").*?(" + p_End + ")+"); 689 System.Text.RegularExpressions.MatchCollection _Collection = _Regex.Matches(p_Mail); 690 if (_Collection.Count == 0) return ""; 691 return _Collection[0].Value; 692 } 693 #endregion 694 #region base64解码及QuotedPrintable编码解码 695 /// <summary> 696 /// base64解码 697 /// </summary> 698 /// <param name="p_Text"></param> 699 /// <param name="p_Encoding"></param> 700 /// <returns></returns> 701 public string DecodeBase64(string p_Text, System.Text.Encoding p_Encoding) 702 { 703 if (p_Text.Trim().Length == 0) return ""; 704 byte[] _ValueBytes = Convert.FromBase64String(p_Text); 705 return p_Encoding.GetString(_ValueBytes); 706 } 707 /// <summary> 708 /// base64 解码 709 /// </summary> 710 /// <param name="code"></param> 711 /// <returns></returns> 712 private string DecodeBase64(string code) //string code_type, 713 { 714 //string decode = ""; 715 string st = code + "000";// 716 string strcode = st.Substring(0, (st.Length / 4) * 4); 717 byte[] bytes = Convert.FromBase64String(strcode); 718 try 719 { 720 decode = System.Text.Encoding.GetEncoding("GB2312").GetString(bytes); 721 } 722 catch (Exception ex) 723 { 724 decode = code; 725 } 726 return decode; 727 } 728 //对邮件标题解码 quoted-printable 729 /// <summary> 730 /// quoted-printable 解码 731 /// </summary> 732 /// <param name="code"></param> 733 /// <returns></returns> 734 private string DecodeQ(string code) 735 { 736 string[] textArray1 = code.Split(new char[] { '=' }); 737 byte[] buf = new byte[textArray1.Length]; 738 try 739 { 740 for (int i = 0; i < textArray1.Length; i++) 741 { 742 if (textArray1[i].Trim() != string.Empty) 743 { 744 byte[] buftest = new byte[2]; 745 buf[i] = (byte)int.Parse(textArray1[i].Substring(0, 2), System.Globalization.NumberStyles.HexNumber); 746 } 747 } 748 } 749 catch 750 { 751 return null; 752 } 753 return System.Text.Encoding.Default.GetString(buf); 754 } 755 /// <summary> 756 /// QuotedPrintable编码接码 757 /// </summary> 758 /// <param name="p_Text">原始文字</param> 759 /// <param name="p_Encoding">编码方式</param> 760 /// <returns>接码后信息</returns> 761 public string DecodeQuotedPrintable(string p_Text, System.Text.Encoding p_Encoding) 762 { 763 System.IO.MemoryStream _Stream = new System.IO.MemoryStream(); 764 char[] _CharValue = p_Text.ToCharArray(); 765 for (int i = 0; i != _CharValue.Length; i++) 766 { 767 switch (_CharValue[i]) 768 { 769 case '=': 770 if (_CharValue[i + 1] == '\r' || _CharValue[i + 1] == '\n') 771 { 772 i += 2; 773 } 774 else 775 { 776 try 777 { 778 _Stream.WriteByte(Convert.ToByte(_CharValue[i + 1].ToString() + _CharValue[i + 2].ToString(), 16)); 779 i += 2; 780 } 781 catch 782 { 783 _Stream.WriteByte(Convert.ToByte(_CharValue[i])); 784 } 785 } 786 break; 787 default: 788 _Stream.WriteByte(Convert.ToByte(_CharValue[i])); 789 break; 790 } 791 } 792 return p_Encoding.GetString(_Stream.ToArray()); 793 } 794 /// <summary> 795 /// Utf8解码 796 /// </summary> 797 /// <param name="data"></param> 798 /// <returns></returns> 799 public static string base64Utf8Decode(string data) 800 { 801 string result = ""; 802 try 803 { 804 System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding(); 805 System.Text.Decoder utf8Decode = encoder.GetDecoder(); 806 byte[] todecode_byte = Convert.FromBase64String(data); 807 int charCount = utf8Decode.GetCharCount(todecode_byte, 0, todecode_byte.Length); 808 char[] decoded_char = new char[charCount]; 809 utf8Decode.GetChars(todecode_byte, 0, todecode_byte.Length, decoded_char, 0); 810 result = new String(decoded_char); 811 } 812 catch (Exception e) 813 { 814 //return "Error in base64Encode" + e.Message; 815 } 816 return result; 817 } 818 #endregion 819 #region 转换文字里的字符集 820 /// <summary> 821 /// 转换文字里的字符集 822 /// </summary> 823 /// <param name="p_Text"></param> 824 /// <returns></returns> 825 public string GetReadText(string p_Text) 826 { 827 System.Text.RegularExpressions.Regex _Regex = new System.Text.RegularExpressions.Regex(@"(?<=\=\?).*?(\?\=)+"); 828 System.Text.RegularExpressions.MatchCollection _Collection = _Regex.Matches(p_Text); 829 string _Text = p_Text; 830 foreach (System.Text.RegularExpressions.Match _Match in _Collection) 831 { 832 string _Value = "=?" + _Match.Value; 833 if (_Value[0] == '=') 834 { 835 string[] _BaseData = _Value.Split('?'); 836 if (_BaseData.Length == 5) 837 { 838 System.Text.Encoding _Coding = System.Text.Encoding.GetEncoding(_BaseData[1]); 839 _Text = _Text.Replace(_Value, _Coding.GetString(Convert.FromBase64String(_BaseData[3]))).Trim('"').TrimEnd('"', '\r'); 840 } 841 } 842 else 843 { 844 } 845 } 846 return _Text; 847 } 848 #endregion 849 #region 断开与服务器的连接 850 private void Disconnect() 851 { 852 //"quit" 即表示断开连接 853 string input = "QUIT" + CRLF; 854 Byte[] outbytes = System.Text.Encoding.ASCII.GetBytes(input.ToCharArray()); 855 ns.Write(outbytes, 0, outbytes.Length); 856 //关闭数据流 857 ns.Close(); 858 } 859 #endregion
总结：第一次写博客，博客很多地方需要改进。第一二部分是学习其他文章及代码（添加了一些自己想要的功能在里面），然后拼凑在一起的，第三部分保存文件并上传文件服务器是自己写的。希望大家在评论区多提提意见。