$shpPath = "d:\Web\PlatformModel\ruoyi-admin\uploads\models\geojson\803381497aa04afe943bb0a04a6ac30c\流域.shp"
$url = "http://localhost:8448/cesium/geojson/convert"

$form = @{
    shpFile = Get-Item $shpPath
}

try {
    $response = Invoke-RestMethod -Uri $url -Method Post -Form $form -TimeoutSec 30
    Write-Host $response
} catch {
    Write-Host "Error: $_"
}