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;
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。
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