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Read Barcode From URL Asynchronously | PowerShell
run.bat:
@echo off powershell -NoProfile -ExecutionPolicy Bypass -Command "& .\ReadBarcodeFromUrlAsynchronously.ps1" echo Script finished with errorlevel=%errorlevel% pause
ReadBarcodeFromUrlAsynchronously.ps1:
# Cloud API asynchronous "Barcode Reader" job example. # Allows to avoid timeout errors when processing huge or scanned PDF documents. # The authentication key (API Key). # Get your own by registering at https://app.pdf.co $API_KEY = "***********************************" # Direct URL of source file to search barcodes in. $SourceFileURL = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/barcode-reader/sample.pdf" # Comma-separated list of barcode types to search. # See valid barcode types in the documentation https://apidocs.pdf.co $BarcodeTypes = "Code128,Code39,Interleaved2of5,EAN13" # Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'. $Pages = "" # (!) Make asynchronous job $Async = $true # Prepare URL for `Barcode Reader` API call $query = "https://api.pdf.co/v1/barcode/read/from/url" # Prepare request body (will be auto-converted to JSON by Invoke-RestMethod) # See documentation: https://apidocs.pdf.co $body = @{ "types" = $BarcodeTypes "pages" = $Pages "url" = $SourceFileURL "async" = $Async } | ConvertTo-Json try { # Execute request $response = Invoke-WebRequest -Method Post -Headers @{ "x-api-key" = $API_KEY; "Content-Type" = "application/json" } -Body $body -Uri $query $jsonResponse = $response.Content | ConvertFrom-Json if ($jsonResponse.error -eq $false) { # Asynchronous job ID $jobId = $jsonResponse.jobId # URL of generated JSON file with decoded barcodes that will available after the job completion $resultFileUrl = $jsonResponse.url # Check the job status in a loop. # If you don't want to pause the main thread you can rework the code # to use a separate thread for the status checking and completion. do { $statusCheckUrl = "https://api.pdf.co/v1/job/check?jobid=" + $jobId $jsonStatus = Invoke-RestMethod -Method Get -Headers @{ "x-api-key" = $API_KEY } -Uri $statusCheckUrl # Display timestamp and status (for demo purposes) Write-Host "$(Get-date): $($jsonStatus.status)" if ($jsonStatus.status -eq "success") { # Download JSON file with decoded barcodes $jsonFoundBarcodes = Invoke-RestMethod -Method Get -Headers @{ "x-api-key" = $API_KEY } -Uri $resultFileUrl # Display found barcodes in console foreach ($barcode in $jsonFoundBarcodes) { Write-Host "Found barcode:" Write-Host " Type: " + $barcode.TypeName Write-Host " Value: " + $barcode."Value" Write-Host " Document Page Index: " + $barcode."Page" Write-Host " Rectangle: " + $barcode."Rect" Write-Host " Confidence: " + $barcode."Confidence" Write-Host "" } break } elseif ($jsonStatus.status -eq "working") { # Pause for a few seconds Start-Sleep -Seconds 3 } else { Write-Host $jsonStatus.status break } } while ($true) } else { # Display service reported error Write-Host $jsonResponse.message } } catch { # Display request error Write-Host $_.Exception }