powershell - 使用 Microsoft Cognitive API 的 Invoke-RestMethod 收到 400 个错误请求错误

Question

我们正在尝试测试和评估 Microsoft 认知服务的文本分析 API。我们正在尝试使用 Invoke-RestMethod 让快速但肮脏的 PowerShell 脚本正常工作。经过一些调整后，我们仍然收到 400 错误返回给我们。我们不确定出了什么问题，因为 JSON 似乎已更正，并且我们输入的 API key 似乎是正确的。我们利用了在另一个人的博客上发现的有关附加 header 的使用的内容，并尝试了一些变体，但仍然没有成功。有人可以为我们进行健全性检查吗？

#html tag stripper function
function htmlStrip ($results)
    {
    #using .NET toString method to ensure PS doesn't interpret same var incorrectly
    $results = $results.toString()
    $results -replace '<[^>]*(>|$)'
    }


Try
{


    [string]$sourceUrl = Read-Host "Enter a URL such as https://foobar.com"
}
Catch
{
    Write-Host "URL requires http:// or https:// prefix e.g. https://cnn.com"
}


$webClient = New-Object Net.WebClient
[string]$results = $webClient.DownloadString($sourceUrl)


[string]$cleanResults = htmlStrip $results


$body = 
[ordered]@{"documents" = 
    @{ "language" = "en"; "id" = $sourceUrl; "text" = $cleanResults }
    }

#>

$body = [ordered]@{
    "documents" = 
    @(
        @{ "language" = "en"; "id" = $sourceUrl; "text" = $cleanResults }
    )
}

$jsonBody = $body | ConvertTo-Json

#Begin Text Analytics API Call with Invoke-RestMethod wrapper
#[string]$apiUrl = "https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/keyPhrases"
[string]$apiKey = "REDACTED"


$headers = @{ "Ocp-Apim-Subscription-Key" = $apiKey }

$analyticsResults = Invoke-RestMethod -Method Post -Uri $apiUrl -Headers $headers -Body $jsonBody -ContentType "application/json"  -ErrorAction Stop

Write-Host $analyticsResults

Write-Host $jsonBody

Answer 1

您放入请求的 text 属性中的数据可能无效。
我使用 GitHub 上 TypeScript 存储库的 README.md 的修复 URL 尝试了您的脚本，并且它有效。

您的脚本(稍微缩短)

$sourceUrl = 'https://raw.githubusercontent.com/Microsoft/TypeScript/master/README.md'

$webClient = New-Object Net.WebClient
$results = $webClient.DownloadString($sourceUrl)

$body = [ordered]@{
    "documents" = 
    @(
        @{ "language" = "en"; "id" = $sourceUrl; "text" = $results }
    )
}

$jsonBody = $body | ConvertTo-Json

$apiUrl = "https://westus.api.cognitive.microsoft.com/text/analytics/v2.0/keyPhrases"
$apiKey = "..."

$headers = @{ "Ocp-Apim-Subscription-Key" = $apiKey }

$analyticsResults = Invoke-RestMethod -Method Post -Uri $apiUrl -Headers $headers -Body $jsonBody -ContentType "application/json"  -ErrorAction Stop
$analyticsResults.documents.keyPhrases

结果

TypeScript compiler
gulp tests
g typescript
TypeScript source
built compiler
TypeScript users
g gulp
TypeScript directory
cd TypeScript
gulp baseline
gulp lint
gulp local
gulp clean
gulp runtests-browser
gulp LKG
Install Gulp tools
...