C#调用百度云存储接口上传文件

因前几日见园子里有人说可以把网站静态文件放在百度上，于是去百度开放平台看了看，发现之前那篇文章不是调的云存储接口啊。。。

于是自己写了个C#能调百度云存储的例子（百度云开放平台只提供php、java、Python、c++），下面贴一下步骤和代码，还请多多指点啊！

一、libcurl.NET

 

百度提供的四种途径我们选择的是curl方式，但是大家都知道curl需要linux环境支持，这里引用了国外的libcurl.NET开源项目。下载最新版本的libcurlnet-1_3.zip，解压后将这（ca-bundle.crt、libcurl.dll、LibCurlNet.dll、LibCurlShim.dll）四个文件放在你自己项目的bin目录下。

然后项目里添加LibCurlNet.dll引用。

二、签名算法

百度的URL签名算法说是用的sha1加密，千万别理解错！这里我是从php的hash_hmac算法转的，代码如下：

 1 /// <summary>

 2         /// hmacSha1算法加密

 3         /// </summary>

 4         /// <param name="encryptText">加密明文</param>

 5         /// <param name="encryptKey">加密密钥</param>

 6         /// <returns></returns>

 7         public static string hmacSha1(string encryptText, string encryptKey)

 8         {

 9             HMACSHA1 myHMACSHA1 = new HMACSHA1(Encoding.Default.GetBytes(encryptKey));

10             byte[] RstRes = myHMACSHA1.ComputeHash(Encoding.Default.GetBytes(encryptText));

11             return Convert.ToBase64String(RstRes);

12         }

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三、实现curl上传

其实就是要将下面这段命令翻译成C#

curl -T bs.txt -v 

"http://bcs.duapp.com/bucket/testobject?sign=MBO:f:PVaOdaf%2BxNoC7aXRqL%2FJq5Kp7a4%3D"

　　废话不多直接上代码

  1 using System;

  2 using System.Collections.Generic;

  3 using System.IO;

  4 using System.Linq;

  5 using System.Security.Cryptography;

  6 using System.Text;

  7 using System.Web;

  8 using SeasideResearch.LibCurlNet;

  9 

 10 namespace BaiduCloudStorage

 11 {

 12     class Program

 13     {

 14         static void Main(string[] args)

 15         {

 16             string flag = "MBO";

 17             string accessKey = "83ee44XXXX0799394e9fXXXXa731XXXX";

 18             string secrectKey = "0Aa2XXXXdff516c44XXXX9e1ef0XXXX1";

 19             string bucket = "sitefiles", sobject = "Media/80cb39dbb6fd526694279e79aa18972bd407364a.jpg";

 20             string content = flag + "\n";

 21             content += "Method=PUT\n";

 22             content += "Bucket=sitefiles\n";

 23             content += "Object=/" + sobject + "\n";

 24             //content += "Ip=115.173.192.3\n";

 25             //content += "Time=2014-01-13\n";

 26             //content += "Size=1024\n"; // B字节

 27 

 28             string signture = flag + ":" + accessKey + ":" + HttpUtility.UrlEncode(hmacSha1(content, secrectKey));

 29             string url = "http://bcs.duapp.com/" + bucket + "/" + HttpUtility.UrlEncode(sobject) + "?sign=" + signture;

 30 

 31             FileStream fs = new FileStream(@"D:\Media\9e1e73600c338744337ee82c500fd9f9d62aa0e6.jpg", FileMode.Open, FileAccess.Read, FileShare.Read);

 32 

 33             try

 34             {

 35                 Curl.GlobalInit((int)CURLinitFlag.CURL_GLOBAL_ALL);

 36 

 37                 Easy easy = new Easy();

 38                 Easy.ReadFunction rf = new Easy.ReadFunction(OnReadData);

 39                 easy.SetOpt(CURLoption.CURLOPT_READFUNCTION, rf);

 40                 easy.SetOpt(CURLoption.CURLOPT_READDATA, fs);

 41 

 42                 Easy.WriteFunction wf = new Easy.WriteFunction(OnWriteData);

 43                 easy.SetOpt(CURLoption.CURLOPT_URL, url);

 44                 easy.SetOpt(CURLoption.CURLOPT_UPLOAD, 1);

 45                 easy.SetOpt(CURLoption.CURLOPT_INFILESIZE, fs.Length);

 46 

 47                 easy.SetOpt(CURLoption.CURLOPT_VERBOSE, 1);

 48                 easy.SetOpt(CURLoption.CURLOPT_WRITEDATA, wf);

 49 

 50                 Easy.DebugFunction df = new Easy.DebugFunction(OnDebug);

 51                 easy.SetOpt(CURLoption.CURLOPT_DEBUGFUNCTION, df);

 52                 easy.SetOpt(CURLoption.CURLOPT_VERBOSE, true);

 53 

 54                 easy.Perform();

 55                 easy.Cleanup();

 56                 fs.Close();

 57 

 58                 Curl.GlobalCleanup();

 59 

 60             }

 61             catch (Exception ex)

 62             {

 63                 Console.WriteLine(ex);

 64             }

 65 

 66             Console.ReadKey();

 67         }

 68 

 69         public static Int32 OnReadData(Byte[] buf, Int32 size, Int32 nmemb, Object extraData)

 70         {

 71             FileStream fs = (FileStream)extraData;

 72             return fs.Read(buf, 0, size * nmemb);

 73         }

 74 

 75         public static void OnDebug(CURLINFOTYPE infoType, String msg, Object extraData)

 76         {

 77             // Console.WriteLine(msg);

 78         }

 79 

 80         public static Int32 OnProgress(Object extraData, Double dlTotal, Double dlNow, Double ulTotal, Double ulNow)

 81         {

 82             Console.WriteLine("Progress: {0} {1} {2} {3}", dlTotal, dlNow, ulTotal, ulNow);

 83             return 0; // standard return from PROGRESSFUNCTION

 84         }

 85 

 86         public static Int32 OnWriteData(Byte[] buf, Int32 size, Int32 nmemb, Object extraData)

 87         {

 88             Console.Write(System.Text.Encoding.UTF8.GetString(buf));

 89             return size * nmemb;

 90         }

 91 

 92         /// <summary>

 93         /// hmacSha1算法加密

 94         /// </summary>

 95         /// <param name="encryptText">加密明文</param>

 96         /// <param name="encryptKey">加密密钥</param>

 97         /// <returns></returns>

 98         public static string hmacSha1(string encryptText, string encryptKey)

 99         {

100             HMACSHA1 myHMACSHA1 = new HMACSHA1(Encoding.Default.GetBytes(encryptKey));

101             byte[] RstRes = myHMACSHA1.ComputeHash(Encoding.Default.GetBytes(encryptText));

102             return Convert.ToBase64String(RstRes);

103         }

104     }

105 }

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至于libcurl.NET具体咋用，我这儿真没什么资料，都谷歌上查的，兄弟们有相关资料的给留个地址啊，我这还想继续完善完善啊。。。