利用客户端向SharePoint文档库上传文档

SharePoint 提供了强大的文档管理功能，能够创建各种类型的文档库，并对文档进行相应的管理。但是，对于用户来说，每次上传下载文档都要登录到网点，稍嫌麻烦，遇到网速慢的时候，更为恼火。那么能否用客户端的代码上传或下载文档呢？答案是肯定的，下面的一段代码就是在本地创建一个Http Client程序，来处理服务器文档库文件。

  1using System;
  2using System.Collections.Generic;
  3using System.Text;
  4using System.IO;
  5using System.Web;
  6using System.Net;
  7using System.Data;
  8using System.Diagnostics;
  9
 10namespace com.sinoair.local
 11{
 12    public static class FileHelper
 13    {
 14        public static string UploadFile(string destUrl, string content)
 15        {
 16            try
 17            {
 18                Uri destUri = new Uri(destUrl);
 19                MemoryStream inStream = new MemoryStream(Encoding.UTF8.GetBytes(content));
 20                WebRequest req = WebRequest.Create(destUri); 
 21                req.Method = "PUT";
 22                req.Headers.Add("Overwrite", "T");
 23                req.Timeout = System.Threading.Timeout.Infinite;
 24                req.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
 25                Stream outStream = req.GetRequestStream();
 26                string status = CopyStream(inStream, outStream);
 27                if (status == "success")
 28                {
 29                    outStream.Close();
 30                    WebResponse ores = req.GetResponse();
 31                    return "success";
 32                }
 33                else
 34                {
 35                    return status;
 36                }
 37            }
 38            catch (WebException we)
 39            {
 40                return we.Message;
 41            }
 42            catch (System.Exception ee)
 43            {
 44                return ee.Message;
 45            }
 46        }
 47
 48        public static string UploadFile(string destUrl, string content, string username, string password)
 49        {
 50            try
 51            {
 52                Uri destUri = new Uri(destUrl);
 53                MemoryStream inStream = new MemoryStream(Encoding.UTF8.GetBytes(content));
 54                //FileStream inStream = File.OpenRead(sourcePath);              
 55                WebRequest req = WebRequest.Create(destUri);
 56                req.Method = "PUT"; req.Headers.Add("Overwrite", "T");
 57                req.Timeout = System.Threading.Timeout.Infinite;
 58                req.Credentials = new NetworkCredential(username, password, "sinoair");
 59                Stream outStream = req.GetRequestStream();
 60                string status = CopyStream(inStream, outStream);
 61                if (status == "success")
 62                {
 63                    outStream.Close();
 64                    WebResponse ores = req.GetResponse();
 65                    return "success";
 66                }
 67                else
 68                {
 69                    return status;
 70                }
 71            }
 72            catch (WebException we)
 73            {
 74                return we.Message;
 75            }
 76            catch (System.Exception ee)
 77            {
 78                return ee.Message;
 79            }
 80        }
 81        public static string DownloadFile(string sourceUrl, string destFolder)
 82        {
 83            try
 84            {
 85                System.Uri sourceUri = new System.Uri(sourceUrl);
 86                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(sourceUri);
 87                req.Method = "GET";
 88                req.Timeout = System.Threading.Timeout.Infinite;
 89                req.Credentials = CredentialCache.DefaultCredentials;
 90                req.AllowAutoRedirect = true; WebResponse res = req.GetResponse();
 91                Stream inStream = res.GetResponseStream();
 92                FileStream fs = new FileStream(destFolder, FileMode.OpenOrCreate);
 93                string status = CopyStream(inStream, fs);
 94                if (status == "success")
 95                {
 96                    inStream.Close();
 97                    fs.Close();
 98                    fs.Dispose();
 99                    return "success";
100                }
101                else
102                {
103                    inStream.Close();
104                    fs.Close();
105                    fs.Dispose();
106                    return status;
107                }
108            }
109            catch (WebException we)
110            {
111                return we.Message;
112            }
113            catch (System.Exception ee)
114            {
115                return ee.Message;
116            }
117        }
118
119        public static string DownloadFile(string sourceUrl, string destFolder, string username, string password)
120        {
121            try
122            {
123                System.Uri sourceUri = new System.Uri(sourceUrl);
124                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(sourceUri);
125                req.Method = "GET"; req.Timeout = System.Threading.Timeout.Infinite;
126                req.Credentials = new System.Net.NetworkCredential(username, password, "sinoair");
127                req.AllowAutoRedirect = true;
128                WebResponse res = req.GetResponse();
129                Stream inStream = res.GetResponseStream();
130                FileStream fs = new FileStream(destFolder, FileMode.OpenOrCreate);
131                string status = CopyStream(inStream, fs);
132                if (status == "success")
133                {
134                    inStream.Close();
135                    fs.Close();
136                    fs.Dispose();
137                    return "success";
138                }
139                else
140                {
141                    inStream.Close();
142                    fs.Close();
143                    fs.Dispose();
144                    return status;
145                }
146            }
147            catch (WebException we)
148            {
149                return we.Message;
150            }
151            catch (System.Exception ee)
152            {
153                return ee.Message;
154            }
155        }
156
157        private static string CopyStream(Stream inStream, Stream outStream)
158        {
159            try
160            {
161                byte[] buffer = new byte[1024];
162                for (; ; )
163                {
164                    int numBytesRead = inStream.Read(buffer, 0, buffer.Length);
165                    if (numBytesRead <= 0)
166                        break;
167                    outStream.Write(buffer, 0, numBytesRead);
168                }
169                inStream.Close();
170                return "success";
171            }
172            catch (System.Exception ee)
173            {
174                return ee.Message;
175            }
176        }
177    }
178}

假定我们有SharePoint服务器，名为portal，下面建了一个DocLib1的文档库，则该文档库的地址为http://portal/DocLib1 ，如果我们想将本地文件上传到文档库中，文件名为test.txt，即可调用FileHelper.UploadFile("http://portal/DocLib1/test.txt", "Text File Content")。对于文档库中的文件夹（例如Folder1），其对应的网址为http://portal/DocLib1/Folder1，则上传的参数相应改为http://portal/DocLib1/Folder1/test.txt 即可。