1. Run an introspection query against the GitHub GraphQL API schema via a GET request. Executing the curl request in PowerShell results in the error: Invoke-WebRequest cannot bind parameter “Headers”. See Figure 1.
Plaintext
PS E:\wwwroot> curl -H "Authorization: bearer token" https://api.github.com/graphql
Invoke-WebRequest : 无法绑定参数“Headers”。无法将“System.String”类型的“Authorization: bearer ghp_Y
Cwd1mYg2Z8b679QweW2GEmt0bYRob1VxZdH”值转换为“System.Collections.IDictionary”类型。
所在位置 行:1 字符: 9
+ curl -H "Authorization: bearer ghp_YCwd1mYg2Z8b679QweW2GEmt0bYRob1VxZ ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [Invoke-WebRequest]，ParameterBind
ingException
+ FullyQualifiedErrorId : CannotConvertArgumentNoMessage,Microsoft.PowerShell.Co
mmands.InvokeWebRequestCommand
PS E:\wwwroot>
2. Retrieve the relevant help documentation for Invoke-WebRequest. Execute the command: get-help invoke-webrequest
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PS E:\wwwroot> get-help invoke-webrequest
是否要运行 Update-Help?
Update-Help cmdlet 下载 Windows PowerShell 模块的最新帮助文件，并将其安装在你的计算机 上。有关 Update-Help cmdlet
的详细信息，请参阅 https:/go.microsoft.com/fwlink/?LinkId=210614。
[Y] 是(Y) [N] 否(N) [S] 暂停(S) [?] 帮助 (默认值为“Y”): Y
名称
Invoke-WebRequest
摘要
Gets content from a web page on the Internet.
语法
Invoke-WebRequest [-Uri] [-Body ] [-Certificate ] [-CertificateThumbpri
nt ] [-ContentType ] [-Credential ] [-DisableKeepAlive] [-Headers ] [-InFile ] [-MaximumRedirection ] [-Metho
d {Default | Get | Head | Post | Put | Delete | Trace | Options | Merge | Patch}]
[-OutFile ] [-PassThru] [-Proxy ] [-ProxyCredential <
System.Management.Automation.PSCredential>] [-ProxyUseDefaultCredentials] [-Sessi
onVariable ] [-TimeoutSec ] [-TransferEncoding {chun
ked | compress | deflate | gzip | identity}] [-UseBasicParsing] [-UseDefaultCrede
ntials] [-UserAgent ] [-WebSession ] []
说明
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, li
nks, images, and other significant HTML elements.
This cmdlet was introduced in Windows PowerShell 3.0.
> [!NOTE] > By default, script code in the web page may be run when the page is b
eing parsed to populate the > `ParsedHtml` property. Use the `-UseBasicParsing` s
witch to suppress this.
> [!IMPORTANT] > The examples in this article reference hosts in the `contoso.com
` domain. This is a fictitious > domain used by Microsoft for examples. The examp
les are designed to show how to use the cmdlets. > However, since the `contoso.co
m` sites do not exist, the examples do not work. Adapt the examples > to hosts in
your environment.
相关链接
Online Version: https://docs.microsoft.com/powershell/module/microsoft.powershell
.utility/invoke-webrequest?view=powershell-5.1&WT.mc_id=ps-gethelp
Invoke-RestMethod
ConvertFrom-Json
ConvertTo-Json
备注
若要查看示例，请键入: "get-help Invoke-WebRequest -examples".
有关详细信息，请键入: "get-help Invoke-WebRequest -detailed".
若要获取技术信息，请键入: "get-help Invoke-WebRequest -full".
有关在线帮助，请键入: "get-help Invoke-WebRequest -online"
PS E:\wwwroot>
3. Adjust the syntax to adapt to PowerShell: curl -Headers @{“Authorization”=”bearer token”} https://api.github.com/graphql. See Figure 2.
Plaintext
PS E:\wwwroot> curl -Headers @{"Authorization"="bearer token"} https://api.github.com/graphql
StatusCode : 200
StatusDescription : OK
Content : {"data":{"__schema":{"queryType":{"name":"Query"},"mutationType":
{"name":"Mutation"},"subscriptionType":null,"types":[{"kind":"INP
UT_OBJECT","name":"AbortQueuedMigrationsInput","description":"Aut
ogene...
RawContent : HTTP/1.1 200 OK
Vary: Accept, Authorization, Cookie, X-GitHub-OTP,Accept-Encoding
, Accept, X-Requested-With
X-OAuth-Scopes: admin:enterprise, admin:gpg_key, admin:org, admin
:org_hook, admin:public_k...
Forms : {}
Headers : {[Vary, Accept, Authorization, Cookie, X-GitHub-OTP,Accept-Encodi
ng, Accept, X-Requested-With], [X-OAuth-Scopes, admin:enterprise,
admin:gpg_key, admin:org, admin:org_hook, admin:public_key, admi
n:repo_hook, delete:packages, delete_repo, gist, notifications, r
epo, user, workflow, write:discussion, write:packages], [X-Accept
ed-OAuth-Scopes, repo], [github-authentication-token-expiration,
2022-03-17 07:57:08 UTC]...}
Images : {}
InputFields : {}
Links : {}
ParsedHtml : System.__ComObject
RawContentLength : 2042412
PS E:\wwwroot>
4. Decide to execute in Git Bash: curl -H “Authorization: bearer token” https://api.github.com/graphql. It executes successfully. See Figure 3.
