Question

我正在尝试创建C＃代码，因此我可以从Team Foundation Server自动下载BUGS的预定义查询的所有附件。代码似乎工作得很好，但所有下载的文件都是出于意外原因而损坏，我无法查看它们。有人可以看看代码并分享意见吗？非常感谢您的帮助！

static void Main()
        {
            // Connection to the Team Project Collection
            TfsTeamProjectCollection tpc = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(
              new Uri("https://xxx.visualstudio.com/defaultcollection"));

            // Get a WorkItemStore object for the Team Project Collection.
            WorkItemStore workItemStore = new WorkItemStore(tpc);

            // Run a query.
            WorkItemCollection queryResults = workItemStore.Query(
              @"SELECT *
    FROM WorkItems
    WHERE [System.WorkItemType] = 'Bug'
    AND [Language] = 'xxx'
    AND [How Found] = 'xxx'
    AND [Assigned to] = 'xxx'
    ORDER BY [Changed Date] DESC");

            // Get a WebClient object to do the attachment download
            WebClient webClient = new WebClient()
            {
                UseDefaultCredentials = true
            };

            // Loop through each work item.
            foreach (WorkItem workItem in queryResults)
            {
                // Loop through each attachment in the work item.
                foreach (Attachment attachment in workItem.Attachments)
                {
                    // Construct a filename for the attachment
                    string filename = string.Format("C:\\TEST\\{0}_{1}", workItem.Fields["ID"].Value, attachment.Name);
                    // Download the attachment.
                    webClient.DownloadFile(attachment.Uri, filename);
                }
            }

Answer 1

对于身份验证，您可以添加以下代码来验证项目集合级别。

//get credentials by logging in with a user interface
var credentialsProvider = new UICredentialsProvider();

var teamProjectCollection = new TfsTeamProjectCollection(collection, credentialsProvider);
teamProjectCollection.Authenticate();

更多详情请参阅此博客：Team Foundation Service: Downloading attachments from work items through the api

Answer 2

这是由于WebClient未正确向TFS服务器进行身份验证。您可以使用WorkItemServer.DownloadFile()中的Microsoft.TeamFoundation.WorkItemTracking.Proxy方法下载文件，而不是使用WebClient下载文件。有关详细信息，请参阅以下代码：

foreach (Attachment atm in workItem.Attachments)
            {
                WorkItemServer wise = tpc.GetService<WorkItemServer>();
                string file = wise.DownloadFile(atm.Id);
                File.Copy(file,"C:\\TEST\\" + atm.Name,true);

            }

Answer 3

文件未损坏，下载的附件为 zip 格式。您可以检查“损坏的文件”的大小。它的大小会更小。因此，在下载时，您将文件名设为 =====> filename+".zip" ===>当您提取并查看它时，这将为我们提供正确的文件。

示例。

Dummy.docx ==> 源文件 ===> 290kb
Dummy.docx ==> 文件在目标 ===> 280kb ==> 无法打开此文件

解决方案。

Dummy.docx.zip ===> 提取文件将提供 Dummy.docx (290 kb)==> 可以打开它并查看数据。

从TFS下载工作项附件（文件已损坏）

3 个答案: