Teams虚拟用户在线维持脚本报错：哈希字面量缺少等号

问题场景 #

编写了一个PowerShell脚本用于维持Microsoft Teams中2个虚拟用户的在线状态，确保队列能正常呼叫转接，但运行时提示三处“哈希字面量缺少=”错误，已检查括号、逗号等语法但未发现问题。

错误原因 #

脚本中三个哈希表的最后一个键值对后存在多余的逗号，PowerShell解析时会认为后续还有键值对定义，但实际没有，因此触发“缺少=”的语法错误。此外还有一处潜在问题：$users数组为空，需要填入目标用户的标识。

解决方案 #

1. 移除每个哈希表最后一个键值对末尾的多余逗号
2. 补充$users数组中的用户UPN或ID
3. 确保Azure AD应用已授予Presence.ReadWrite.All应用权限（调用Graph API必需）

修正后的完整脚本 #

# Graph API Details
$tenantId = "***"
$clientId = "***"
$clientSecret = "***"
 
# Function to get OAuth token
function Get-OAuthToken {
    param (
        [string]$tenantId,
        [string]$clientId,
        [string]$clientSecret
    )
 
    $body = @{
        grant_type    = "client_credentials"
        scope         = "https://graph.microsoft.com/.default"
        client_id     = $clientId
        client_secret = $clientSecret
    }
 
    $response = Invoke-RestMethod -Method Post -Uri "https://login.microsoftonline.com/$tenantId/oauth2/v2.0/token" -ContentType "application/x-www-form-urlencoded" -Body $body
    return $response.access_token
}
 
# Get the OAuth token
$token = Get-OAuthToken -tenantId $tenantId -clientId $clientId -clientSecret $clientSecret
 
# Users to keep online - 替换为实际用户UPN或ID
$users = @("user1@yourdomain.com", "user2@yourdomain.com")
 
# Function to set user presence status to available
function Set-UserPresence {
    param (
        [string]$user,
        [string]$token
    )
 
    $uri = "https://graph.microsoft.com/v1.0/users/$user/presence/setPresence"
    $headers = @{
        Authorization = "Bearer $token"
        Content-Type  = "application/json"
    }
    $body = @{
        sessionId     = [guid]::NewGuid().ToString()
        availability  = "Available"
        activity      = "Available"
        expirationDuration = "PT1H"
    }
 
    $jsonBody = $body | ConvertTo-Json
    Invoke-RestMethod -Method Post -Uri $uri -Headers $headers -Body $jsonBody
}
 
# Loop to keep users online
while ($true) {
    foreach ($user in $users) {
        Set-UserPresence -user $user -token $token
        Write-Output "Set presence to Available for $user at $(Get-Date)"
    }
 
    # Wait for 5 minutes before setting the presence again
    Start-Sleep -Seconds 300
}

额外说明 #

• 若仍出现语法错误，检查是否存在不可见的特殊字符（如全角符号），可将脚本复制到纯文本编辑器（如Notepad++）查看
• 调用Graph API的应用必须在Azure AD中完成权限配置并授予管理员同意，否则会返回权限不足的错误

内容的提问来源于stack exchange，提问作者Niklas