使用 Powershell 对 http 请求进行 JSON 对象格式化

Question

I am working on a project integrating with Slack and I am having some trouble when I am trying to send data to the API as it is expecting a Json object for the blocks that it is needing to format.

Using the Slack Block Builder I know it is expecting:

    "blocks": [        
        {
            "type": "section",
            "text": {
                "type": "mrkdwn",
                "text": "http://bar.com"
            }
        }
    ]

And this is how I am trying to construct the object and the parameters for the chat.postMessage method to send to the API

$messageText = 'http://bar.com'
$blocksDetailObj = [PSCustomObject]@{'type' = '"mrkdwn"'
                     'text' = $messageText}


$blocksObject = [PSCustomObject]@{ 'type' = '"section"'
                   'text' = $blocksDetailObj }

$blocksArray = @()

$blocksArray += $blocksObject

$queryStringParameters = @{ 'token' = $botToken 
                            'channel' = $channelID
                            'text' = 'fallback text'
                            'blocks' = $blocksArray 
                                     }

Any help or documentation would be greatly appreciated.

Answer 1

You may want to checkout PSSlack - a PS module to interact with the Slack API, or PoshBot , as suggested. Here you can find a long blog post that gives context how to PSSlack can be used.

If you do not want to use those modules directly you should take a look at the Send-SlackMessage function :

 $body = @{ } switch ($psboundparameters.keys) { 'channel' {$body.channel = $channel } 'text' {$body.text = $text} 'username' {$body.username = $username} 'asuser' {$body.as_user = $AsUser} 'iconurl' {$body.icon_url = $iconurl} 'iconemoji' {$body.icon_emoji = $iconemoji} 'linknames' {$body.link_names = 1} 'parse' {$body.parse = $Parse} 'UnfurlLinks' {$body.unfurl_links = $UnfurlLinks} 'UnfurlMedia' {$body.unfurl_media = $UnfurlMedia} 'attachments' {$body.attachments = $Attachments} } $Messages += $Body } else { foreach($Message in $SlackMessage) { $Messages += $SlackMessage } } foreach($Message in $Messages) { if($Token -or ($Script:PSSlack.Token -and -not $Uri)) { if($Message.attachments) { $Message.attachments = ConvertTo-Json -InputObject @$Message.attachments) -Depth 6 -Compress } Write-Verbose "Send-SlackApi -Body $($Message | Format-List | Out-String)" $response = Send-SlackApi @ProxyParam -Method chat.postMessage -Body $Message -Token $Token -ForceVerbose:$ForceVerbose if ($response.ok) { $link = "$($Script:PSSlack.ArchiveUri)/$($response.channel)/p$($response.ts -replace '\\.')" $response | Add-Member -MemberType NoteProperty -Name link -Value $link } $response } elseif($Uri -or $Script:PSSlack.Uri) { if(-not $ForceVerbose) { $ProxyParam.Add('Verbose', $False) } if($ForceVerbose) { $ProxyParam.Add('Verbose', $true) } $json = ConvertTo-Json -Depth 6 -Compress -InputObject $Message Invoke-RestMethod @ProxyParam -Method Post -Body $json -Uri $Uri } else { Throw 'No Uri or Token specified. Specify a Uri or Token in the parameters or via Set-PSSlackConfig' } }