将另一种语言转换为PowerShell或使用powershell中的语言
我找到了这段代码
// "url" is the full destination path (including filename, ie https://mysite.sharepoint.com/Documents/Test.txt) // "cookie" is the CookieContainer generated from Wichtor's code // "data" is the byte array containing the files contents (used a FileStream to load) System.Net.ServicePointManager.Expect100Continue = false; HttpWebRequest request = HttpWebRequest.Create(url) as HttpWebRequest; request.Method = "PUT"; request.Accept = "*/*"; request.ContentType = "multipart/form-data; charset=utf-8"; request.CookieContainer = cookie; request.AllowAutoRedirect = false; request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)"; request.Headers.Add("Accept-Language", "en-us"); request.Headers.Add("Translate", "F"); request.Headers.Add("Cache-Control", "no-cache"); request.ContentLength = data.Length; using (Stream req = request.GetRequestStream()) { req.Write(data, 0, data.Length); } HttpWebResponse response = (HttpWebResponse)request.GetResponse(); Stream res = response.GetResponseStream(); StreamReader rdr = new StreamReader(res); string rawResponse = rdr.ReadToEnd(); response.Close(); rdr.Close();
这显然成功地将大文件上传到sharepoint站点,但是我的代码在powershell中 。 无论如何,现在在powershell中使用它的forms,甚至将其转换为PowerShell?
作为一般规则,C#代码很容易转换为PowerShell,因为C#使用与PowerShell(.NET)完全相同的底层类型系统和运行时环境。
有几点需要注意:
变量赋值
C#是一种类型安全的语言,这意味着编译器保证变量的类型及其值,如示例所示:
HttpWebRequest request = HttpWebRequest.Create(url); // ^ ^ \________________________/^ // | | | | // | variable name | statement terminator ";" // type-name | // static method call that returns a // value we can assign to "request"
在PowerShell中:
- 类型是隐式的,变量不绑定到单个类型(因此不需要类型名称)
- 变量引用以
$
为前缀 - 要访问静态成员(如上面的
Create()
方法),我们使用以下语法:-
[Namespace.TypeName]::Member
-
- 的
;
是不必要的,声明意味着终止后的换行符
因此,上述陈述变为:
$request = [System.Net.HttpWebRequest]::Create($url)
布尔
在PowerShell中,两个C#布尔关键字( true
和false
)由两个名为$true
和$false
自动变量表示:
[System.Net.ServicePointManager]::Expect100Continue = $false
using
PowerShell没有与C#的using
语句相当的构造。 要确保处理实现IDisposable
的对象,您必须使用try
/ catch
/ finally
:
$req = $request.GetRequestStream() try{ $req.Write($data, 0, $data.Length) } catch { throw $_ } finally { if($req){ $req.Dispose() } }
构造函数
PowerShell没有用于对象实例化的new
关键字,但提供了可以包装C#构造函数的New-Object
cmdlet:
$rdr = New-Object -TypeName System.IO.StreamReader -ArgumentList $res
而不是:
StreamReader rdr = new StreamReader(res);
在PowerShell 5.0及更高版本中,您现在也可以使用new
静态方法调用构造函数:
$rdr = [System.IO.StreamReader]::new($res)
类型铸造
PowerShell支持在C#中看起来像(typename)variable
显式转换 ,但同样支持使用方括号而不是括号:
[System.Net.HttpWebResponse]$request.GetResponse()
并且(从版本3.0开始)它也支持未经检查的转换 (仍然使用方括号):
$request.GetResponse() -as [System.Net.HttpWebResponse]
如果无法进行$null
,后者将返回$null
,而不是抛出错误。
这应该让你立刻翻译。 从您的codefind中的注释,似乎您可能需要翻译“Wichtor的代码”,以生成$cookie
容器。
见下面的例子。 我必须在类和函数中包装代码。
$code = @" using System.Security.Policy; using System.IO; using System.Net; public class MySharepointTools { public void UploadFile(System.String url, System.Net.CookieContainer cookie, System.Byte[] data) { System.Net.ServicePointManager.Expect100Continue = false; HttpWebRequest request = HttpWebRequest.Create(url) as HttpWebRequest; request.Method = "PUT"; request.Accept = "*/*"; request.ContentType = "multipart/form-data; charset=utf-8"; request.CookieContainer = cookie; request.AllowAutoRedirect = false; request.UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)"; request.Headers.Add("Accept-Language", "en-us"); request.Headers.Add("Translate", "F"); request.Headers.Add("Cache-Control", "no-cache"); request.ContentLength = data.Length; using (Stream req = request.GetRequestStream()) { req.Write(data, 0, data.Length); } HttpWebResponse response = (HttpWebResponse)request.GetResponse(); Stream res = response.GetResponseStream(); StreamReader rdr = new StreamReader(res); string rawResponse = rdr.ReadToEnd(); response.Close(); rdr.Close(); } } "@ Add-Type -TypeDefinition $code -Language CSharp $tools = New-Object MySharepointTools
现在您可以使用调用方法
$Tools.UploadFile(url, cookie, data)