阿里云 OSS上传下载文件实例源码下载

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【核心代码】

using System;
using System.IO;
using System.Net;
using System.Text;
using Aliyun.OSS;
using Aliyun.OSS.Test.Util;

using NUnit.Framework;

namespace Aliyun.OSS.Test.TestClass.ObjectTestClass
{
    [TestFixture]
    public class ObjectSignedUriTest
    {
        private static IOss _ossClient;
        private static string _className;
        private static string _bucketName;
        private static string _objectKey;
        private static string _objectETag;

        [TestFixtureSetUp]
        public static void ClassInitialize()
        {
            //get a OSS client object
            _ossClient = OssClientFactory.CreateOssClient();
            //get current class name, which is prefix of bucket/object
            _className = TestContext.CurrentContext.Test.FullName;
            _className = _className.Substring(_className.LastIndexOf('.')   1).ToLowerInvariant();
            //create the bucket
            _bucketName = OssTestUtils.GetBucketName(_className);
            _ossClient.CreateBucket(_bucketName);
            //create sample object
            _objectKey = OssTestUtils.GetObjectKey(_className);
            var poResult = OssTestUtils.UploadObject(_ossClient, _bucketName, _objectKey,
                Config.UploadTestFile, new ObjectMetadata());
            _objectETag = poResult.ETag;
        }

        [TestFixtureTearDown]
        public static void ClassCleanup()
        {
            OssTestUtils.CleanBucket(_ossClient, _bucketName);
        }

        #region GET methods
        [Test]
        public void GetPreSignedUriDefaultPositiveTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var uri = _ossClient.GeneratePresignedUri(_bucketName, _objectKey, expireDate);
            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";
                res = req.GetResponse() as HttpWebResponse;
                Assert.AreEqual(HttpStatusCode.OK, res.StatusCode, "response status code is not expected.");
                using (var stream = res.GetResponseStream())
                {
                    var actualETag = FileUtils.ComputeContentMd5(stream);
                    Assert.AreEqual(_objectETag.ToLowerInvariant(), actualETag.ToLowerInvariant());
                }
            }
            catch (WebException)
            {
                //TODO:
            }
            finally
            {
                if(req != null) req.Abort();
                if(res != null) res.Close();
            }
        }

        [Test]
        public void GetPreSignedUriDefaultNegativeTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds before
            var expireDate = now.AddSeconds(-5);
            var uri = _ossClient.GeneratePresignedUri(_bucketName, _objectKey, expireDate);
            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";
                res = req.GetResponse() as HttpWebResponse;
                Assert.Fail("response fail for expired URI");
            }
            catch (WebException e)
            {
                Assert.IsTrue(e.Message.Contains("403"), 
                    string.Format("Unexpected exception: {0}", e.Message));
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }

        [Test]
        public void GetPreSignedUriWithContentTypeAndMd5PositiveTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var gpuRequest = new GeneratePresignedUriRequest(_bucketName, _objectKey);
            gpuRequest.Expiration = expireDate;
            gpuRequest.ContentType = "application/zip";
            gpuRequest.ContentMd5 = _objectETag;
            var uri = _ossClient.GeneratePresignedUri(gpuRequest);

            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";
                req.ContentType = "application/zip";
                req.Headers.Add(HttpRequestHeader.ContentMd5, _objectETag);
                res = req.GetResponse() as HttpWebResponse;
                Assert.AreEqual(HttpStatusCode.OK, res.StatusCode, "response status code is not expected.");
                using (var stream = res.GetResponseStream())
                {
                    var actualETag = FileUtils.ComputeContentMd5(stream);
                    Assert.AreEqual(_objectETag.ToLowerInvariant(), actualETag.ToLowerInvariant());
                }
            }
            catch (WebException)
            {
                //TODO:
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }

        [Test]
        public void GetPreSignedUriWithContentTypeAndMd5NegativeTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var gpuRequest = new GeneratePresignedUriRequest(_bucketName, _objectKey);
            gpuRequest.Expiration = expireDate;
            //do not set content type
            //gpuRequest.ContentType = "application/zip";
            gpuRequest.ContentMd5 = _objectETag;
            var uri = _ossClient.GeneratePresignedUri(gpuRequest);

            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";
                req.ContentType = "application/zip";
                req.Headers.Add(HttpRequestHeader.ContentMd5, _objectETag);
                res = req.GetResponse() as HttpWebResponse;
                Assert.Fail("response fail for expired URI");
            }
            catch (WebException e)
            {
                Assert.IsTrue(e.Message.Contains("403"),
                    string.Format("Unexpected exception: {0}", e.Message));
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }

        [Test]
        public void GetPreSignedUriWithUserMetaPositiveTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var gpuRequest = new GeneratePresignedUriRequest(_bucketName, _objectKey);
            gpuRequest.Expiration = expireDate;
            gpuRequest.UserMetadata.Add("name1", "vaue1");
            gpuRequest.UserMetadata.Add("name2", "vaue2");
            var uri = _ossClient.GeneratePresignedUri(gpuRequest);

            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";
                req.Headers.Add("x-oss-meta-name1", "vaue1");
                req.Headers.Add("x-oss-meta-name2", "vaue2");
                res = req.GetResponse() as HttpWebResponse;
                Assert.AreEqual(HttpStatusCode.OK, res.StatusCode, "response status code is not expected.");
                using (var stream = res.GetResponseStream())
                {
                    var actualETag = FileUtils.ComputeContentMd5(stream);
                    Assert.AreEqual(_objectETag.ToLowerInvariant(), actualETag.ToLowerInvariant());
                }
            }
            catch (WebException)
            {
                //TODO:
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }

        [Test]
        public void GetPreSignedUriWithResponseHeaderPositiveTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var gpuRequest = new GeneratePresignedUriRequest(_bucketName, _objectKey)
            {
                Expiration = expireDate,
                ResponseHeaders =
                {
                    CacheControl = "No-cache",
                    ContentType = "application/zip",
                    ContentDisposition = "myDownload.zip"
                }
            };
            var uri = _ossClient.GeneratePresignedUri(gpuRequest);

            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";
                res = req.GetResponse() as HttpWebResponse;
                Assert.AreEqual(HttpStatusCode.OK, res.StatusCode, "response status code is not expected.");
                using (var stream = res.GetResponseStream())
                {
                    var actualETag = FileUtils.ComputeContentMd5(stream);
                    Assert.AreEqual(_objectETag.ToLowerInvariant(), actualETag.ToLowerInvariant());
                }
            }
            catch (WebException)
            {
                //TODO:
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }

        [Test]
        public void GetPreSignedUriFullSettingsPositiveTest()
        {
            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var gpuRequest = new GeneratePresignedUriRequest(_bucketName, _objectKey)
            {
                Expiration = expireDate,
                ContentType = "application/zip",
                ContentMd5 = _objectETag,
                ResponseHeaders =
                {
                    CacheControl = "No-cache",
                    ContentType = "application/zip",
                    ContentDisposition = "myDownload.zip"
                }
            };

            gpuRequest.AddUserMetadata("name1", "vaue1");
            gpuRequest.AddUserMetadata("name2", "vaue2");
            var uri = _ossClient.GeneratePresignedUri(gpuRequest);

            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "GET";

                req.ContentType = "application/zip";
                req.Headers.Add(HttpRequestHeader.ContentMd5, _objectETag);

                req.Headers.Add("x-oss-meta-name1", "vaue1");
                req.Headers.Add("x-oss-meta-name2", "vaue2");
                res = req.GetResponse() as HttpWebResponse;
                Assert.AreEqual(HttpStatusCode.OK, res.StatusCode, "response status code is not expected.");
                using (var stream = res.GetResponseStream())
                {
                    var actualETag = FileUtils.ComputeContentMd5(stream);
                    Assert.AreEqual(_objectETag.ToLowerInvariant(), actualETag.ToLowerInvariant());
                }
            }
            catch (WebException)
            {
                //TODO:
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }
        #endregion

        #region PUT methods
        [Test]
        public void PutPreSignedUriDefaultPositiveTest()
        {
            var testStr = FileUtils.GenerateOneKb();
            var bytes = Encoding.ASCII.GetBytes(testStr);
            //calculate the expected ETag
            var expectedETag = FileUtils.ComputeContentMd5(new MemoryStream(bytes));

            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds later
            var expireDate = now.AddSeconds(5);
            var targetObject = OssTestUtils.GetObjectKey(_className);
            var uri = _ossClient.GeneratePresignedUri(_bucketName, targetObject, expireDate, SignHttpMethod.Put);
            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "PUT";
                using (var stream = req.GetRequestStream())
                {
                    stream.Write(bytes, 0, bytes.Length);
                }
                try
                {
                    res = req.GetResponse() as HttpWebResponse;
                    Assert.AreEqual(HttpStatusCode.OK, res.StatusCode, "response status code is not expected.");
                    //get the uploaded object ETag
                    var actualETag = _ossClient.GetObjectMetadata(_bucketName, targetObject).ETag;
                    Assert.AreEqual(expectedETag.ToLowerInvariant(), actualETag.ToLowerInvariant(),
                        "Uploaded object ETag value is not expected");
                }
                catch (WebException)
                {
                    //TODO:
                }
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }

        [Test]
        public void PutPreSignedUriDefaultNegativeTest()
        {
            var testStr = FileUtils.GenerateOneKb();
            var bytes = Encoding.ASCII.GetBytes(testStr);

            HttpWebRequest req = null;
            HttpWebResponse res = null;

            var now = DateTime.Now;
            //set expiration time to 5 seconds before
            var expireDate = now.AddSeconds(-5);
            var targetObject = OssTestUtils.GetObjectKey(_className);
            var uri = _ossClient.GeneratePresignedUri(_bucketName, targetObject, expireDate, SignHttpMethod.Put);
            try
            {
                req = WebRequest.Create(uri) as HttpWebRequest;
                req.Method = "PUT";
                using (var stream = req.GetRequestStream())
                {
                    stream.Write(bytes, 0, bytes.Length);
                }
                res = req.GetResponse() as HttpWebResponse;
                Assert.Fail("response fail for expired URI");
            }
            catch (WebException e)
            {
                Assert.IsTrue(e.Message.Contains("403"),
                    string.Format("Unexpected exception: {0}", e.Message));
            }
            finally
            {
                if (req != null) req.Abort();
                if (res != null) res.Close();
            }
        }
        #endregion
    }
}

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