在ARM模板中使用“if”函数来实现条件对象构建。示例如下：

{ "variables": { "myVmSize": "[if(equals(parameters('vmSize'), 'small'), 'Standard_A1', 'Standard_A2')]" }, "resources": [ { "type": "Microsoft.Compute/virtualMachines", "name": "[parameters('vmName')]", "apiVersion": "2020-06-01", "location": "[parameters('location')]", "properties": { "hardwareProfile": { "vmSize": "[variables('myVmSize')]" }, "storageProfile": { "osDisk": { "createOption": "fromImage", "managedDisk": { "storageAccountType": "[parameters('storageAccountType')]" }, "name": "[concat(parameters('vmName'), '_OsDisk')]" } }, "osProfile": { "computerName": "[parameters('vmName')]", "adminUsername": "[parameters('adminUsername')]", "adminPassword": "[parameters('adminPassword')]" }, "networkProfile": { "networkInterfaces": [ { "id": "[resourceId('Microsoft.Network/networkInterfaces', parameters('nicName'))]" } ] } }, "dependsOn": [ "[parameters('nicName')]" ] } ] }