使用Powershell对http请求进行JSON对象格式化

Question

我正在处理一个与Slack集成的项目，当我试图将数据发送到API时遇到了一些问题，因为它希望为需要格式化的块提供Json对象。

使用Slack Block Builder，我知道它正在期待：

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

这就是我试图构造chat.postMessage方法的对象和参数以发送到API 的方式

$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 
}

如有任何帮助或文件，我们将不胜感激。

Answer 1

您可能需要签出PSSlick-一个PS模块，用于与Slack API或PoshBot交互，如建议所示。在这里，您可以找到一篇很长的博客文章，其中给出了如何使用PSSlack的上下文。

如果你不想直接使用这些模块，你应该看看Send-SlackMessage函数：

$body = @{ }
switch ($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'
}
}