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：

/// <summary>
        /// hmacSha1算法加密
        /// </summary>
        /// <param name="encryptText">加密明文</param>
        /// <param name="encryptKey">加密密钥</param>
        /// <returns></returns>
        public static string hmacSha1(string encryptText, string encryptKey)
        {
            HMACSHA1 myHMACSHA1 = new HMACSHA1(Encoding.Default.GetBytes(encryptKey));
            byte[] RstRes = myHMACSHA1.ComputeHash(Encoding.Default.GetBytes(encryptText));
            return Convert.ToBase64String(RstRes);
        }

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

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Web;
using SeasideResearch.LibCurlNet;

namespace BaiduCloudStorage
{
    class Program
    {
        static void Main(string[] args)
        {
            string flag = "MBO";
            string accessKey = "83ee44XXXX0799394e9fXXXXa731XXXX";
            string secrectKey = "0Aa2XXXXdff516c44XXXX9e1ef0XXXX1";
            string bucket = "sitefiles", sobject = "Media/80cb39dbb6fd526694279e79aa18972bd407364a.jpg";
            string content = flag + "\n";
            content += "Method=PUT\n";
            content += "Bucket=sitefiles\n";
            content += "Object=/" + sobject + "\n";
            //content += "Ip=115.173.192.3\n";
            //content += "Time=2014-01-13\n";
            //content += "Size=1024\n"; // B字节

            string signture = flag + ":" + accessKey + ":" + HttpUtility.UrlEncode(hmacSha1(content, secrectKey));
            string url = "http://bcs.duapp.com/" + bucket + "/" + HttpUtility.UrlEncode(sobject) + "?sign=" + signture;

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

            try
            {
                Curl.GlobalInit((int)CURLinitFlag.CURL_GLOBAL_ALL);

                Easy easy = new Easy();
                Easy.ReadFunction rf = new Easy.ReadFunction(OnReadData);
                easy.SetOpt(CURLoption.CURLOPT_READFUNCTION, rf);
                easy.SetOpt(CURLoption.CURLOPT_READDATA, fs);

                Easy.WriteFunction wf = new Easy.WriteFunction(OnWriteData);
                easy.SetOpt(CURLoption.CURLOPT_URL, url);
                easy.SetOpt(CURLoption.CURLOPT_UPLOAD, 1);
                easy.SetOpt(CURLoption.CURLOPT_INFILESIZE, fs.Length);

                easy.SetOpt(CURLoption.CURLOPT_VERBOSE, 1);
                easy.SetOpt(CURLoption.CURLOPT_WRITEDATA, wf);

                Easy.DebugFunction df = new Easy.DebugFunction(OnDebug);
                easy.SetOpt(CURLoption.CURLOPT_DEBUGFUNCTION, df);
                easy.SetOpt(CURLoption.CURLOPT_VERBOSE, true);

                easy.Perform();
                easy.Cleanup();
                fs.Close();

                Curl.GlobalCleanup();

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
            }

            Console.ReadKey();
        }

        public static Int32 OnReadData(Byte[] buf, Int32 size, Int32 nmemb, Object extraData)
        {
            FileStream fs = (FileStream)extraData;
            return fs.Read(buf, 0, size * nmemb);
        }

        public static void OnDebug(CURLINFOTYPE infoType, String msg, Object extraData)
        {
            // Console.WriteLine(msg);
        }

        public static Int32 OnProgress(Object extraData, Double dlTotal, Double dlNow, Double ulTotal, Double ulNow)
        {
            Console.WriteLine("Progress: {0} {1} {2} {3}", dlTotal, dlNow, ulTotal, ulNow);
            return 0; // standard return from PROGRESSFUNCTION
        }

        public static Int32 OnWriteData(Byte[] buf, Int32 size, Int32 nmemb, Object extraData)
        {
            Console.Write(System.Text.Encoding.UTF8.GetString(buf));
            return size * nmemb;
        }

        /// <summary>
        /// hmacSha1算法加密
        /// </summary>
        /// <param name="encryptText">加密明文</param>
        /// <param name="encryptKey">加密密钥</param>
        /// <returns></returns>
        public static string hmacSha1(string encryptText, string encryptKey)
        {
            HMACSHA1 myHMACSHA1 = new HMACSHA1(Encoding.Default.GetBytes(encryptKey));
            byte[] RstRes = myHMACSHA1.ComputeHash(Encoding.Default.GetBytes(encryptText));
            return Convert.ToBase64String(RstRes);
        }
    }
}

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。。。