《Windows Azure Platform 系列文章目录》
注意：本文适用于国内由世纪互联运维的Azure China。
本文将会介绍如何使用REST API来直接访问Storage Service。
项目文件在这里下载
1.首先我们以管理员身份，创建一个Windows Console项目
2.在Program.cs中，增加如下代码
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading.Tasks;
using System.Web;
namespace AzureStorageRestAPI
{
class Program
{
internal class CanonicalizedString
{
private StringBuilder canonicalizedString = new StringBuilder();
internal CanonicalizedString(string initialElement)
{
this.canonicalizedString.Append(initialElement);
}
internal void AppendCanonicalizedElement(string element)
{
this.canonicalizedString.Append("\n");
this.canonicalizedString.Append(element);
}
internal string Value
{
get
{
return this.canonicalizedString.ToString();
}
}
}
const string bloburi = @"https://leidemo.blob.core.chinacloudapi.cn";
const string accountname = "leidemo";
const string key = "EZNbnhPJ7+Fv6X5k9OW36ece5WflDJaUvGjdVpdwxEXsKVzEa18/Rw2f30d6ASELNYE7XlvFs78nfCw+UIs3kQ==";
const string method = "GET";
static void Main(string[] args)
{
string AccountName = accountname;
string AccountSharedKey = key;
string Address = bloburi;
string container = "public";
// 创建请求字符串
string QueryString = "?restype=container&comp=list";
Uri requesturi = new Uri(Address + "/" + container + QueryString);
string MessageSignature = "";
// 创建HttpWebRequest类
HttpWebRequest Request = (HttpWebRequest)HttpWebRequest.Create(requesturi.AbsoluteUri);
Request.Method = method;
Request.ContentLength = 0;
Request.Headers.Add("x-ms-date", DateTime.UtcNow.ToString("R"));
Request.Headers.Add("x-ms-version", "2009-09-19");
// 开始创建签名
MessageSignature += "GET\n"; // Verb
MessageSignature += "\n"; // Content-Encoding
MessageSignature += "\n"; // Content-Language
MessageSignature += "\n"; // Content-Length
MessageSignature += "\n"; // Content-MD5
MessageSignature += "\n"; // Content-Type
MessageSignature += "\n"; // Date
MessageSignature += "\n"; // If-Modified-Since
MessageSignature += "\n"; // If-Match
MessageSignature += "\n"; // If-None-Match
MessageSignature += "\n"; // If-Unmodified-Since
MessageSignature += "\n"; // Range
// CanonicalizedHeaders
ArrayList list = new ArrayList();
foreach (string str in Request.Headers.Keys)
{
if (str.ToLowerInvariant().StartsWith("x-ms-", StringComparison.Ordinal))
{
list.Add(str.ToLowerInvariant());
}
}
list.Sort();
foreach (string str2 in list)
{
StringBuilder builder = new StringBuilder(str2);
string str3 = ":";
foreach (string str4 in GetHeaderValues(Request.Headers, str2))
{
string str5 = str4.Replace("\r\n", string.Empty);
builder.Append(str3);
builder.Append(str5);
str3 = ",";
}
MessageSignature += builder.ToString() + "\n";
}
MessageSignature += GetCanonicalizedResourceVersion2(requesturi, AccountName);
// 开始创建签名
byte[] SignatureBytes = System.Text.Encoding.UTF8.GetBytes(MessageSignature);
System.Security.Cryptography.HMACSHA256 SHA256 = new System.Security.Cryptography.HMACSHA256(Convert.FromBase64String(AccountSharedKey));
// 创建Authorization HTTP消息头的值
String AuthorizationHeader = "SharedKey " + AccountName + ":" + Convert.ToBase64String(SHA256.ComputeHash(SignatureBytes));
// 把编码后的签名加入到Authorization HTTP消息头中
Request.Headers.Add("Authorization", AuthorizationHeader);
// 获取返回消息
using (HttpWebResponse response = (HttpWebResponse)Request.GetResponse())
{
if (response.StatusCode == HttpStatusCode.OK)
{
// 服务器返回成功消息
using (Stream stream = response.GetResponseStream())
{
using (StreamReader sr = new StreamReader(stream))
{
var s = sr.ReadToEnd();
// 输出返回消息
Console.WriteLine(s);
}
}
}
else
{
// 这里可以抛出异常信息
}
}
Console.ReadLine();
}
static ArrayList GetHeaderValues(NameValueCollection headers, string headerName)
{
ArrayList list = new ArrayList();
string[] values = headers.GetValues(headerName);
if (values != null)
{
foreach (string str in values)
{
list.Add(str.TrimStart(new char[0]));
}
}
return list;
}
static string GetCanonicalizedResourceVersion2(Uri address, string accountName)
{
StringBuilder builder = new StringBuilder("/");
builder.Append(accountName);
builder.Append(address.AbsolutePath);
CanonicalizedString str = new CanonicalizedString(builder.ToString());
NameValueCollection values = HttpUtility.ParseQueryString(address.Query);
NameValueCollection values2 = new NameValueCollection();
foreach (string str2 in values.Keys)
{
ArrayList list = new ArrayList(values.GetValues(str2));
list.Sort();
StringBuilder builder2 = new StringBuilder();
foreach (object obj2 in list)
{
if (builder2.Length > 0)
{
builder2.Append(",");
}
builder2.Append(obj2.ToString());
}
values2.Add((str2 == null) ? str2 : str2.ToLowerInvariant(), builder2.ToString());
}
ArrayList list2 = new ArrayList(values2.AllKeys);
list2.Sort();
foreach (string str3 in list2)
{
StringBuilder builder3 = new StringBuilder(string.Empty);
builder3.Append(str3);
builder3.Append(":");
builder3.Append(values2[str3]);
str.AppendCanonicalizedElement(builder3.ToString());
}
return str.Value;
}
}
}
3.在调试项目的时候，注意修改以下参数：
const string bloburi = @"https://leidemo.blob.core.chinacloudapi.cn"; //修改为Storage Endpoint
const string accountname = "leidemo"; //修改为你的存储账号名称
const string key = "[YourStorageAccountKey]"; //修改为你的存储账号Key
string container = "public"; //修改为存储账号的Container Name
4.运行成功，你将会看到Console程序输出如下信息，内容为名为存储账号leidemo，Container为public中所有Blob的信息：
参考资料:http://blogs.msdn.com/b/azchina/archive/2010/03/19/windows-azure-rest-api-storage-service.aspx
本文转自Lei Zhang博客园博客，原文链接：http://www.cnblogs.com/threestone/p/4742214.html，如需转载请自行联系原作者
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