Powershell - 从图像 url 下载图像 [英] Powershell - Download Image from an image url

问题描述

对 powershell 的了解有限.
我尝试从图像 url 下载图像.例如像这样:"http://hdwallpaperia.com/wp-content/uploads/2014/01/Mc-Laren-P1-Wallpaper-Image-Picture-640x360.jpg"

limited knowledge with powershell.
I try to download a image from an image url. for example like this : "http://hdwallpaperia.com/wp-content/uploads/2014/01/Mc-Laren-P1-Wallpaper-Image-Picture-640x360.jpg"

在访问链接之前，我必须先登录.这是我的登录页面 html 代码:

Before to reach the link, I have to login first. here is My login page html code:

<tr>
    <td colspan="2">Please enter your user name and password below:</td>
</tr>
<tr style="height: 10px;"><td></td></tr>
<tr>
    <td>User Name:</td>
    <td><input name="login_username" style="width: 295px;" type="text" size="40" value=""></td>
</tr>
<tr>
    <td>Password:</td>
    <td><input name="login_password" style="width: 295px;" type="password" size="40"></td>
</tr>
<tr>
    <td>Realm:</td>
    <td>
        <select name="realm" style="width: 295px;"><option value="local">Local</option><option value="ldap" selected="">LDAP</option>
        </select>
    </td>
</tr>
    <tr style="height: 10px;"><td></td></tr>
<tr>
    <td><input type="submit" value="Login"></td>
</tr>   

这是我的powershell代码:

Here is my powershell code :

$url = "http://local_machine/example_640x360.jpg"

$ie = New-Object -com InternetExplorer.Application
$ie.visible = $true
$ie.navigate($url)

$ie.Document.getElementByid("login_username").value = "$Account"
$ie.Document.getElementByid("login_password").value = "$Password"
$ie.Document.getElementByid("realm").value = "LDAP"

$Log_In=$ie.Document.getElementsByTagName("input") | where-object {$_.type -eq "submit"}
$Log_In.click();

while($ie.Busy) {Start-Sleep -s 1}

#$ie.Document.Body | Out-File -FilePath "c:\temp\test.jpg"
$ie.quit()

我可以成功登录并到达img链接，但不知道如何下载图片.什么命令可以帮助我下载?

I can successfully login and reach the img link, but don't know how to download the image. What command can helps me to download?

推荐答案

您使用 COM 使其过于复杂.我无法测试这些自动取款机，但它们应该可以工作.

You're overcomplicating it using COM. I couldn't test these atm., but they should work.

#Solution 1 - WebClient
$url = "http://www.united.no/wp-content/uploads/2014/03/moyesliver.jpg"

$wc = New-Object System.Net.WebClient
$wc.DownloadFile($url, "C:\temp\test.jpg")


#Solution 2 - never tried this before
Invoke-WebRequest $url -OutFile C:\temp\test.jpg

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