Question

我正在尝试编写一个powershell脚本，它将根据当前目录设置下载目录变量，并将文件下载到该目录。

我的代码是：

cd downloads
$DevDownloadDirectory = [IO.Directory]::GetCurrentDirectory

$clnt = New-Object System.Net.WebClient

# download and extract the file
$url = “fileurl/file.zip"
$file = "$DevDownloadDirectory\file.zip"
$clnt.DownloadFile($url,$file)

我得到的问题是每当我到达它抽出的这部分代码时：

使用“2”参数调用“DownloadFile”的异常：“异常   在WebClient请求期间发生。“在C：\ directory \ script.ps1：462   炭：20


$ clnt.DownloadFile＆lt;＆lt;＆lt;＆lt; （$网址，$文件）

CategoryInfo：NotSpecified：（:) []，MethodInvocationException

FullyQualifiedErrorId：DotNetMethodException

有谁可以帮我弄清楚为什么会这样？

Answer 1

$DevDownloadDirectory = [IO.Directory]::GetCurrentDirectory

应该是

$DevDownloadDirectory = [IO.Directory]::GetCurrentDirectory()

GetCurrentDirectory（）是一个方法，如果您不使用“（）”，它将只返回相同的名称，但不返回当前目录。

Answer 2

#Dowload File
function Download-File-Func($url, $targetFile)
{
    "Downloading $url"
    $uri = New-Object "System.Uri" "$url"
    $request = [System.Net.HttpWebRequest]::Create($uri)
    $request.set_Timeout(600000) #10 minutes
    $response = $request.GetResponse()
    $totalLength = [System.Math]::Floor($response.get_ContentLength()/1024)
    $responseStream = $response.GetResponseStream()
    $targetStream = New-Object -TypeName System.IO.FileStream -ArgumentList $targetFile, Create
    $buffer = new-object byte[] 10KB
    $count = $responseStream.Read($buffer,0,$buffer.length)
    $downloadedBytes = $count
    while ($count -gt 0)
        {
        [System.Console]::CursorLeft = 0
        [System.Console]::Write("Downloaded {0}K of {1}K", [System.Math]::Floor($downloadedBytes/1024), $totalLength)
        $targetStream.Write($buffer, 0, $count)
        $count = $responseStream.Read($buffer,0,$buffer.length)
        $downloadedBytes = $downloadedBytes + $count
    }

    "Finished Download"
    $targetStream.Flush()
    $targetStream.Close()
    $targetStream.Dispose()
    $responseStream.Dispose()
}

Powershell下载文件无法正常工作

2 个答案: