我想批量下载一些图片库.这些图像是免费提供的,无需任何权限.我为我的生活无法让它发挥作用.这就是我到目前为止所拥有的. $pattern吐出的是整个HTML行,而不仅仅是图像链接.你有什么指示可以给我吗?循环设置为仅运行一次以进行测试.循环将遍历所有以数字方式组织的页面.
# Variables $i=1 # Webpage Counter $j=1 # Image Counter $rootDir = "http://website.com/sport/galleries/" $saveDir = "C:\Users\user\Desktop\" $webpagetxt = "C:\Users\user\Desktop\page.txt" $links = "C:\Users\user\Desktop\links.txt" $regex = "http://website.com/galleries/[0-9]*/[^\.]*.JPG" # Create folder to download to #New-Item -Name SIoUxSportsGalleries -ItemType directory # Start Web Client $client = New-Object System.Net.WebClient # Main loop to get image links and download For($i=10; $i -le 10; $i++){ # Download source code of the web page. $url = $rootDir+$i+'.htm' $webclient = new-object System.Net.WebClient $webpage = $webclient.DownloadString($url) $webpage > "$webpagetxt" # Parse web page and find image link. $pattern = Get-Content $webpagetxt | Select-String -pattern $regex -Allmatches echo "This is the link" $pattern #$pattern > $links }
解决方法
您需要提取匹配的值. Select-String返回对象,当你回显它时,发生的是$pattern.ToString(). ToString()返回行,而不是匹配值.这将仅返回所有链接:
Get-Content $webpagetxt | Select-String -pattern $regex -Allmatches | % { $_.Matches | % { $_.Value } }
顺便说一句,你可以简单地在换行符上拆分字符串来获取一个数组(如果这是你保存它的唯一原因),而不是保存网页并用get-content重新打开它. 原文链接:https://www.f2er.com/html/232365.html