How to download Bing daily pictures using PowerShell

For a long time did not write technical articles, I have been in the past few years have been a big big volt experience a lot of things. Recently, I can finally write something down.

Today I want to talk about PowerShell for the Web page of some applications, I also recently found that in fact PS can also do crawler ... So I want to give you a thought.

The main command to use this time is invoke-webrequest .

Let's take a look at the official introduction to this order.

the  invoke-webrequest  cmdlet sends HTTP, HTTPS, FTP, and FILE requests to a Web page or Web service. It parses the response and returns collections of forms, links, images, and other significant HTML elements.

https://docs.microsoft.com/zh-cn/powershell/module/Microsoft.PowerShell.Utility/Invoke-WebRequest?view=powershell-5.1

In fact, it is very good to understand that this PS command allows you to simulate the browser to send a request to the website, and get the information you want.

So today we're going to start with the simple, download the daily Bing maps with PowerShell

#bing每日图片 Full Code

$picurl = "https://www.bing.com/HPImageArchive.aspx?format=js&idx=0&n=10"

$data = Invoke-webrequest $picurl

$decode = Convertfrom-json-inputobject $data. Content

$images = $decode. Images

foreach ($image in $images)

{

$imageurl = $image. URL

$fullurl = "http://www.bing.com" + $imageurl

$name = $image. HSH

Invoke-webrequest $fullurl-outfile ($name + ". Jgp")

}

One of the most critical points is how to convert the garbled content into JSON, where Convertfrom-json is used, because PowerShell is unable to read any useful information from the page code it is getting, so it has to be converted.

The variable stored in the $decode after a successful conversion becomes a PS-understandable format that contains the URL and name of the picture, and the work of the Great God, among other information. And then it's good to deal with it.

foreach ($image in $images)

{

$imageurl = $image. URL

#获取图片URL

$fullurl = "http://www.bing.com" + $imageurl

#补全URL

$name = $image. HSH

#获取图片名称

Invoke-webrequest $fullurl-outfile ($name + ". Jgp")

#下载到PS运行目录

}

Although the script is simple but gives me a lot of inspiration, let me see the infinite possibilities of PS.

END

How to download Bing daily pictures using PowerShell