[英]How can I use Powershell to access a restful webservice?
I need to integrate an existing powershell script to update it's status via a restful web service that returns json. 我需要集成一个现有的powershell脚本,通过一个返回json的restful web服务来更新它的状态。 I'm a bit new to powershell but I was able to find the System.Net.WebRequest object do something like the following. 我对powershell有点新,但我能够找到System.Net.WebRequest对象,执行如下操作。
$a = [System.Net.WebRequest]::Create("http://intranet/service/object/")
$a.Method = "GET"
$a.GetResponse()
which returns a json array of objects 它返回一个json对象数组
[ {id:1}, {id:2}] // etc
I'm not sure where to go from here and how to parse this into a native datatype. 我不知道从这里去哪里以及如何将其解析为本机数据类型。 I'd like to be able to post and delete as well. 我也希望能够发布和删除。
Any pointers? 有什么指针吗? And are there any json/rest libraries or command-lets? 有没有json / rest库或command-lets?
What you want is PowerShell 3 and its Invoke-RestMethod , ConvertTo-Json , and ConvertFrom-Json cmdlets . 你想要的是PowerShell 3及其Invoke-RestMethod , ConvertTo-Json和ConvertFrom-Json cmdlet 。 Your code will end up looking like: 您的代码最终将如下所示:
$stuff = invoke-RestMethod -Uri $url -Method Get; $ stuff = invoke-RestMethod -Uri $ url -Method Get;
and there shouldn't even be a need to invoke ConvertFrom-Json on the resulting $stuff => it's already in a usable non-string format. 甚至不需要在结果$ stuff =>上调用ConvertFrom-Json它已经是一个可用的非字符串格式。
As for POSTs|PUTs, simply use PowerShell hashes and arrays to structure your data and then call ConvertTo-Json on it before passing it to invoke-RestMethod or invoke-WebRequest: 对于POSTs | PUT,只需使用PowerShell哈希和数组来构造数据,然后在将其传递给invoke-RestMethod或invoke-WebRequest之前调用它上面的ConvertTo-Json :
invoke-WebRequest -Uri $url -ContentType application/json -Method Post -Body $objectConvertedToJson invoke-WebRequest -Uri $ url -ContentType application / json -Method Post -Body $ objectConvertedToJson
See http://technet.microsoft.com/en-us/Library/hh849971.aspx for details. 有关详细信息,请参阅http://technet.microsoft.com/en-us/Library/hh849971.aspx 。
您可以使用DataContractJsonSerializer ,它是标准.Net库的一部分。
@Jaykul写了一组很好的RESTful函数,这些函数是他的Mindtouch dreamwiki脚本的一部分: http ://poshcode.org/691
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