如何从SharePoint中的文档下载版本历史记录中的文档
我想从SharePoint中文件的“版本历史记录”下载所有文档 我需要通过接口或C#代码获取文档 我也尝试了下面的API URL，但我得到了一个错误如何从SharePoint中的文档下载版本历史记录中的文档,sharepoint,dynamics-crm,Sharepoint,Dynamics Crm,我想从SharePoint中文件的“版本历史记录”下载所有文档 我需要通过接口或C#代码获取文档 我也尝试了下面的API URL，但我得到了一个错误 https://XXXX.sharepoint.com/_api/Web/GetFileByServerRelativeUrl('fileURL')/Versions 我想你不可能一次下载所有的版本。您必须发送附加在括号内的versionid，如versions（），才能获取特定项目 http://<site url>/_api/we
https://XXXX.sharepoint.com/_api/Web/GetFileByServerRelativeUrl('fileURL')/Versions
versionidversions（）http://<site url>/_api/web/getfilebyserverrelativeurl('/<folder name>/<file name>')/versions(<version id>)
http:///_api/web/getfilebyserverrelativeurl（“//”）/versions（）
如果需要次要版本，请正确设置预期url。确保您使用的是最新版本的SharePoint Online CSOM，或至少是2017年9月之后的版本 您可以从Nuget获得最新的CSOM版本，并将其添加到您的项目中 完成后，您可以使用下面提到的代码下载文件的版本。根据您的环境、信誉和文件名进行修改：
var siteUrl = "https://XXXX.sharepoint.com";
var userName = "user.name@tenantname.onmicrosoft.com";
var password = "password";
using (ClientContext context = new ClientContext(siteUrl))
{
SecureString securePassword = new SecureString();
foreach (char c in password.ToCharArray())
{
securePassword.AppendChar(c);
}
context.AuthenticationMode = ClientAuthenticationMode.Default;
context.Credentials = new SharePointOnlineCredentials(userName, securePassword);
var file = context.Web.GetFileByServerRelativeUrl(siteUrl + "/Documents/test.docx");
var fileVersions = file.Versions;
context.Load(file);
context.Load(fileVersions);
context.ExecuteQuery();
int index = 0;
foreach (var version in fileVersions)
{
var str = version.OpenBinaryStream();
context.ExecuteQuery();
string filename = string.Format("c:\\Downloads\\test-{0}.docx", index);
using (var fileStream = new FileStream(filename, FileMode.OpenOrCreate))
{
str.Value.CopyTo(fileStream);
}
index++;
}
}
参考-以下代码供您参考
string _SharePointSiteURL = @"https://lz.sharepoint.com/sites/lz";
var _SharePointSiteUser = "lz@lz.onmicrosoft.com";
var password = "Password";
var localPath = @"c:\test\";
var filePath="Shared Documents/ABC/Test.pdf";
var securePassword = new SecureString();
foreach (char c in password)
{
securePassword.AppendChar(c);
}
using (var clientContext = new ClientContext(_SharePointSiteURL))
{
var onlineCredentials = new SharePointOnlineCredentials(_SharePointSiteUser, securePassword);
clientContext.RequestTimeout = 10000000;
clientContext.Credentials = onlineCredentials;
Web web = clientContext.Web;
clientContext.Load(web, website => website.ServerRelativeUrl, website => website.Url);
clientContext.ExecuteQuery();
var spFile = clientContext.Web.GetFileByServerRelativeUrl((web.ServerRelativeUrl.EndsWith("/") ? web.ServerRelativeUrl : web.ServerRelativeUrl + "/") + filePath);
clientContext.Load(spFile);
FileVersionCollection versions = spFile.Versions;
clientContext.Load(versions);
var oldVersions = clientContext.LoadQuery(versions.Where(v => v != null));
clientContext.ExecuteQuery();
if (oldVersions != null)
{
foreach (Microsoft.SharePoint.Client.FileVersion _version in oldVersions)
{
if (!Directory.Exists(localPath))
{
Directory.CreateDirectory(localPath);
}
using (var wc = new System.Net.WebClient())
{
wc.Credentials = onlineCredentials;
wc.Headers.Add("X-FORMS_BASED_AUTH_ACCEPTED", "f");
wc.Headers["User-Agent"] = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MDDC)";
wc.DownloadFile(web.Url + "/" + _version.Url, localPath+"Test.pdf");
}
}
}
}
此答案适用于可能正在寻找Powershell CSOM脚本的其他人，该脚本将下载当前文档和版本历史记录 诚然，我是一个Powershell新手，我很难找到一个可以从SharePoint下载所有当前文件及其版本的脚本。访问这些版本被证明是一个挑战，因为我尝试过的各种脚本要么（404）找不到，要么（403）被禁止。我能够拼凑一个CSOM函数，我从另一个脚本调用它，该脚本从指定的库/列表下载所有当前版本。我无法发布我的整个解决方案，因为原始脚本不是我的。你可以在这里找到它： 在上面站点的下载AllFileFromLibrary函数中，我添加了GetFileVersions作为Foreach（$FilesColl中的File）循环的最后一条语句 正如我所说，我是Powershell的新手，因此我确信可以对该函数进行一些改进，但它是有效的
Function GetFileVersions
{
#Get versions of specific document from library
$fileVersions = $file.Versions;
$ctx.Load($fileVersions);
$ctx.ExecuteQuery();
$vcount = $fileversions.count;
If ($vcount -ne “0” ) {
# Download all versions of specific file as individual docs
$fname,$fext = $file.name.split('.'); # Separate filename and extension to different variables
foreach ($fversion in $fileVersions) {
$str = $fversion.OpenBinaryStream();
$ctx.ExecuteQuery();
$dtime = $fversion.created.ToString(“u”) -replace “:”,””; # Convert date/time created to formatted string and replace semicolons in the time with blank
$filename =$localfolder + “\” + $fname + “~” + $dtime + “.” + $fext ; # Compose the filename as the target folder, file name + ~+ datetime created.fileextension (i.e. book~2019-02-12 153659Z.xlsx)
$fs = New-Object IO.FileStream $filename ,'Create','Write','Read';
$str.Value.CopyTo($fs);
#To use the Write-Log function below, see the script at https://gallery.technet.microsoft.com/scriptcenter/Write-Log-PowerShell-999c32d0
#$vmessage = $filename + “*” + $fversion.versionlabel; # Message to write to the log file
#Write-Log $vmessage;
$fs.Close();
}
if ($fs.isdisposable) {$fs.Dispose();}
}
}
我有一个我开发的迁移工具的工作解决方案。必要的是将文件和旧版本从SharePoint环境迁移到另一个环境 要下载旧版本，请执行以下操作：
public byte[] DownloadFile(string url, bool isHistory = false)
{
bool isSharepointOnline = (SPCurrentContext.Credentials is SharePointOnlineCredentials);
HttpResponseMessage response = null;
byte[] buffer = null;
if (!isHistory)
{
using (FileInformation fileInfo = File.OpenBinaryDirect(SPCurrentContext, url))
using (IO.MemoryStream memory = new IO.MemoryStream())
{
fileInfo.Stream.CopyTo(memory);
buffer = memory.ToArray();
}
}
else if (isSharepointOnline)
{
using (WebClient httpClient = new WebClient())
{
httpClient.Credentials = SPCurrentContext.Credentials;
httpClient.Headers.Add("X-FORMS_BASED_AUTH_ACCEPTED", "f");
httpClient.Headers["User-Agent"] = this.NONISV; // This is the TRICK!!!
buffer = httpClient.DownloadData(string.Concat(SPCurrentContext.Url, url));
}
}
else
{
using (HttpClientHandler httpHandler = new HttpClientHandler() { Credentials = SPCurrentContext.Credentials })
using (HttpClient client = new HttpClient(httpHandler))
{
response = client.GetAsync(string.Concat(SPCurrentContext.Url, url)).Result;
response.EnsureSuccessStatusCode();
response.Content.LoadIntoBufferAsync().Wait();
buffer = response.Content.ReadAsByteArrayAsync().Result;
}
}
return buffer;
}