ftp获取远程Pdf文件
此程序需要安装ftp服务器，安装adobe reader（我这里使用的adobe reader9.0）
1、部署ftp服务器
将ftp的权限设置为允许匿名访问，部署完成
2.安装adobe reader9.0阅读器
3、设置visual studio 加载adobe reader的插件
工具箱-选择项-com组件
选择adobe PDF Reader 确定完成
到此可以在winform中使用阅读器了
文档加载如下代码可完成文档的加载显示：还是相当简单的。
axAcroPDF1.src =”c:\wyDocument.pdf”;
4、开始写代码实现功能
工程结构如下：
主窗体界面：
后端代码如下：
using System; using System.Collections.Generic; using System.ComponentModel; using System.Configuration; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace myPDFDmeo { public partial class getFileForm : Form { FtpUtility ftp = new FtpUtility(); List<string> fileNames = new List<string>(); public getFileForm() { InitializeComponent(); } //获取远程计算机文件 private void button1_Click(object sender, EventArgs e) { //远程服务器地址 string remoteIpAddress = ConfigurationManager.AppSettings["RemoteIpAddress"].ToString(); //本地目录 string localPath = ConfigurationManager.AppSettings["LocalDirectory"].ToString(); ftp.FtpExplorer("anonymous", "chenshengwei@163.com", remoteIpAddress); //获取ftp当前目录下所有文件列表 List<FileStruct> filesList = ftp.GetFileList(); //获取本地文件夹的所有文件名 fileNames = ftp.ProcessDirectory(localPath); //删除本地文件夹的所有文件 for (int i = 0; i < fileNames.Count; i++) { string localFile = localPath + fileNames[i].ToString(); //删除当前文件 if (File.Exists(localFile)) { File.Delete(localFile); } } //下载远程服务器服务器文件 for (int i = 0; i < filesList.Count; i++) { ftp.DownloadFtp(localPath, filesList[i].Name, remoteIpAddress, "anonymous", "chenshengwei@163.comm"); } //绑定文件列表到combox comboBox1.DataSource = filesList; comboBox1.DisplayMember = "Name"; } //浏览 private void button2_Click(object sender, EventArgs e) { string current = ((FileStruct)comboBox1.SelectedItem).Name; //将文件名称传入 pdfViewForm p = new pdfViewForm(current); p.Show(); } } }
显示的阅读器窗体：
直接拖上adobe reader组件 即可 设置窗体初始化最大化属性 设置reader组件的dock属性-fill
后端代码如下：
using System; using System.Collections.Generic; using System.ComponentModel; using System.Configuration; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace myPDFDmeo { public partial class pdfViewForm : Form { private string parthPdfFile { get; set; } string localPath = ConfigurationManager.AppSettings["LocalDirectory"].ToString(); public pdfViewForm(string currentfileName) { InitializeComponent(); this.parthPdfFile = currentfileName; } private void Form1_Load(object sender, EventArgs e) { axAcroPDF1.src = localPath + parthPdfFile.ToString(); } } }
下面是ftp访问远程主机获取文件的核心实现类了
using System; using System.Collections.Generic; using System.Globalization; using System.IO; using System.Linq; using System.Net; using System.Text; using System.Text.RegularExpressions; namespace myPDFDmeo { enum FileListStyle { UnixStyle, WindowsStyle, Unknown } /// <summary> /// 文件信息 /// </summary> public class FileStruct { public string Flags { get; set; } public bool IsDirectory { get; set; } public string Owner { get; set; } public string Group { get; set; } public string Size { get; set; } public DateTime CreateTime { get; set; } public string Name { get; set; } } /// <summary> /// Ftp访问文件目录类 /// </summary> class FtpUtility { //ftp 用户名 private string username; //ftp密码 private string password; //ftp文件访问地址 private string uri; private FileInfo fileInfo; /// <summary> /// 初始化Ftp /// </summary> /// <param name="username"></param> /// <param name="password"></param> /// <param name="uri"></param> public void FtpExplorer(string username, string password, string uri) { this.username = username; this.password = password; this.uri = uri; } /// <summary> /// 获取本地目录文件名 /// </summary> /// <param name="localFile"></param> /// <returns></returns> public List<string> ProcessDirectory(string localFile) { List<string> fileNames = new List<string>(); string[] fileEntries = Directory.GetFiles(localFile); for (int i = 0; i < fileEntries.Length; i++) { fileInfo = new FileInfo(fileEntries[i].ToString()); fileNames.Add(fileInfo.Name); } return fileNames; } #region ftp下载浏览文件夹信息 /// <summary> /// 得到当前目录下的所有目录和文件 /// </summary> /// <param name="srcpath">浏览的目录</param> /// <returns></returns> public List<FileStruct> GetFileList( ) { List<FileStruct> list = new List<FileStruct>(); FtpWebRequest reqFtp; WebResponse response = null; string ftpuri = string.Format("ftp://{0}/", uri); try { reqFtp = (FtpWebRequest)FtpWebRequest.Create(ftpuri); reqFtp.UseBinary = true; reqFtp.Credentials = new NetworkCredential(username, password); reqFtp.Method = WebRequestMethods.Ftp.ListDirectoryDetails; response = reqFtp.GetResponse(); list = ListFilesAndDirectories((FtpWebResponse)response).ToList(); response.Close(); } catch { if (response != null) { response.Close(); } } return list; } #endregion #region 列出目录文件信息 /// <summary> /// 列出FTP服务器上面当前目录的所有文件和目录 /// </summary> public FileStruct[] ListFilesAndDirectories(FtpWebResponse Response) { StreamReader stream = new StreamReader(Response.GetResponseStream(), Encoding.Default); string Datastring = stream.ReadToEnd(); FileStruct[] list = GetList(Datastring); return list; } /// <summary> /// 获得文件和目录列表 /// </summary> /// <param name="datastring">FTP返回的列表字符信息</param> private FileStruct[] GetList(string datastring) { List<FileStruct> myListArray = new List<FileStruct>(); string[] dataRecords = datastring.Split('\n'); FileListStyle _directoryListStyle = GuessFileListStyle(dataRecords); foreach (string s in dataRecords) { if (_directoryListStyle != FileListStyle.Unknown && s != "") { FileStruct f = new FileStruct(); f.Name = ".."; switch (_directoryListStyle) { case FileListStyle.UnixStyle: f = ParseFileStructFromUnixStyleRecord(s); break; case FileListStyle.WindowsStyle: f = ParseFileStructFromWindowsStyleRecord(s); break; } if (!(f.Name == "." || f.Name == "..")) { myListArray.Add(f); } } } return myListArray.ToArray(); } /// <summary> /// 从Windows格式中返回文件信息 /// </summary> /// <param name="Record">文件信息</param> private FileStruct ParseFileStructFromWindowsStyleRecord(string Record) { FileStruct f = new FileStruct(); string processstr = Record.Trim(); string dateStr = processstr.Substring(0, 8); processstr = (processstr.Substring(8, processstr.Length - 8)).Trim(); string timeStr = processstr.Substring(0, 7); processstr = (processstr.Substring(7, processstr.Length - 7)).Trim(); DateTimeFormatInfo myDTFI = new CultureInfo("en-US", false).DateTimeFormat; myDTFI.ShortTimePattern = "t"; f.CreateTime = DateTime.Parse(dateStr + " " + timeStr, myDTFI); if (processstr.Substring(0, 5) == "<DIR>") { f.IsDirectory = true; processstr = (processstr.Substring(5, processstr.Length - 5)).Trim(); } else { string[] strs = processstr.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries); // true); processstr = strs[1]; f.IsDirectory = false; } f.Name = processstr; return f; } /// <summary> /// 判断文件列表的方式Window方式还是Unix方式 /// </summary> /// <param name="recordList">文件信息列表</param> private FileListStyle GuessFileListStyle(string[] recordList) { foreach (string s in recordList) { if (s.Length > 10 && Regex.IsMatch(s.Substring(0, 10), "(-|d)(-|r)(-|w)(-|x)(-|r)(-|w)(-|x)(-|r)(-|w)(-|x)")) { return FileListStyle.UnixStyle; } else if (s.Length > 8 && Regex.IsMatch(s.Substring(0, 8), "[0-9][0-9]-[0-9][0-9]-[0-9][0-9]")) { return FileListStyle.WindowsStyle; } } return FileListStyle.Unknown; } /// <summary> /// 从Unix格式中返回文件信息 /// </summary> /// <param name="Record">文件信息</param> private FileStruct ParseFileStructFromUnixStyleRecord(string Record) { FileStruct f = new FileStruct(); string processstr = Record.Trim(); f.Flags = processstr.Substring(0, 10); f.IsDirectory = (f.Flags[0] == 'd'); processstr = (processstr.Substring(11)).Trim(); _cutSubstringFromStringWithTrim(ref processstr, ' ', 0); //跳过一部分 f.Owner = _cutSubstringFromStringWithTrim(ref processstr, ' ', 0); f.Group = _cutSubstringFromStringWithTrim(ref processstr, ' ', 0); f.Size = _cutSubstringFromStringWithTrim(ref processstr, ' ', 0); string yearOrTime = processstr.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)[2]; int m_index = processstr.IndexOf(yearOrTime); if (yearOrTime.IndexOf(":") >= 0) //time { processstr = processstr.Replace(yearOrTime, DateTime.Now.Year.ToString()); } f.CreateTime = DateTime.Parse(_cutSubstringFromStringWithTrim(ref processstr, ' ', 8) + " " + yearOrTime); f.Name = processstr; //最后就是名称 return f; } /// <summary> /// 按照一定的规则进行字符串截取 /// </summary> /// <param name="s">截取的字符串</param> /// <param name="c">查找的字符</param> /// <param name="startIndex">查找的位置</param> private string _cutSubstringFromStringWithTrim(ref string s, char c, int startIndex) { int pos1 = s.IndexOf(c, startIndex); string retString = s.Substring(0, pos1); s = (s.Substring(pos1)).Trim(); return retString; } #endregion /// <summary> /// Ftp下载文档 /// </summary> public int DownloadFtp(string filePath, string fileName, string ftpServerIP, string ftpUserID, string ftpPassword) { FtpWebRequest reqFTP; try { FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create); reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileName)); reqFTP.Method = WebRequestMethods.Ftp.DownloadFile; reqFTP.UseBinary = true; reqFTP.KeepAlive = false; reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword); FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse(); Stream ftpStream = response.GetResponseStream(); long cl = response.ContentLength; int bufferSize = 2048; int readCount; byte[] buffer = new byte[bufferSize]; readCount = ftpStream.Read(buffer, 0, bufferSize); while (readCount > 0) { outputStream.Write(buffer, 0, readCount); readCount = ftpStream.Read(buffer, 0, bufferSize); } ftpStream.Close(); outputStream.Close(); response.Close(); return 0; } catch (Exception ex) { return -2; } } public string Username { get { return username; } set { username = value; } } public string Password { get { return password; } set { password = value; } } public string Uri { get { return uri; } set { uri = value; } } } }
说明：下载文件时文件名包含空格的话，会有问题，今天没时间改正了。
下面是配置文件中使用的两个简单的配置了：
<?xml version="1.0" encoding="utf-8" ?> <configuration> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" /> </startup> <appSettings> <add key="RemoteIpAddress" value="127.0.0.1"/> <add key="LocalDirectory" value="E:\down\"/> </appSettings> </configuration>
至此，程序基本完成了，细节问题以后再改吧
