问题描述
我正在创建一个 arm 模板来在 ADF 中部署数据集,为此我需要根据我的输入文件使用新的键值对更新现有的 json 文件.我如何使用 powershell 向 json 文件添加新的键值对.非常感谢您对此的任何帮助..
I am creating an arm template to deploy data sets in ADF, for that i need to update an existing json file with new key value pairs based on my input file. how do i add new key value pairs to json file using powershell.Any help on this is really appreciated..
如果我使用Add-Member",它将使用新的键"和值"更新结构中的所有属性,如下所示.但我希望在另一个值对之后添加新的键和值,如我所示在下面的代码中突出显示需要添加这个"
If am using "Add-Member" it is updating with new "key" and "value" for all properties in the structure like below.but i want new key and value to be added after another value pair like i have shown in the far below code highlighted with "Need to add this"
{
"name": "VIN",
"type": "String"
"newkey1" : "newvalue1"
"newkey2" : "newvalue2"
},
{
"name": "MAKE",
"type": "String"
"newkey1" : "newvalue1"
"newkey2" : "newvalue2"
},
我的代码应该看起来像这样..需要添加这个"是我打算在每个循环中添加的键值对,只要我有来自另一个文本文件的输入.
My Code should look some thing like this.. "Need to add this" is the key value pairs i am intending to add in a for each loop as long as i have inputs from another text file.
{
"name": "[concat(parameters('factoryName'), '/Veh_Obj')]",
"type": "Microsoft.DataFactory/factories/datasets",
"apiVersion": "2018-06-01",
"properties": {
"linkedServiceName": {
"referenceName": "AzureDataLakeStore1",
"type": "LinkedServiceReference"
},
"annotations": [],
"type": "AzureDataLakeStoreFile",
"structure": [
{
"name": "VIN",
"type": "String"
},
{
"name": "MAKE",
"type": "String"
},
{
"Need to add this": "Need to add this",
"Need to add this": "Need to add this"
},
{
"Need to add this": "Need to add this",
"Need to add this": "Need to add this"
},
{
"Need to add this": "Need to add this",
"Need to add this": "Need to add this"
},
{
"Need to add this": "Need to add this",
"Need to add this": "Need to add this"
}
],
"typeProperties": {
"format": {
"type": "TextFormat",
"columnDelimiter": "|",
"rowDelimiter": "\n",
"quoteChar": "\"",
"nullValue": "\"\"",
"encodingName": null,
"treatEmptyAsNull": true,
"skipLineCount": 0,
"firstRowAsHeader": false
},
"fileName": "[parameters('Veh_Obj_properties_typeProperties_fileName')]",
"folderPath": "[parameters('Veh_Obj_properties_typeProperties_folderPath')]"
}
},
"dependsOn": [
"[concat(variables('factoryId'), '/linkedServices/AzureDataLakeStore1')]"
]
},
推荐答案
你不需要 Add-Member
,你只需要追加"到 .properties 中的现有数组.structure
(从技术上讲,您正在创建一个包含新元素的新数组).
You don't need Add-Member
, you simply need to "append" to the existing array in .properties.structure
(technically, you're creating a new array that includes the new elements).
这是一个简化的例子:
# Sample JSON.
$json = @'
{
"name": "[concat(parameters('factoryName'), '/Veh_Obj')]",
"properties": {
"type": "AzureDataLakeStoreFile",
"structure": [
{
"name": "VIN",
"type": "String"
},
{
"name": "MAKE",
"type": "String"
}
],
}
}
'@
# Convert from JSON to a nested custom object.
$obj = $json | ConvertFrom-Json
# Append new objects to the array.
$obj.properties.structure += [pscustomobject] @{ name = 'newname1' },
[pscustomobject] @{ name = 'newname2' }
# Convert back to JSON.
$obj | ConvertTo-Json -Depth 3
以上产生:
{
"name": "[concat(parameters('factoryName'), '/Veh_Obj')]",
"properties": {
"type": "AzureDataLakeStoreFile",
"structure": [
{
"name": "VIN",
"type": "String"
},
{
"name": "MAKE",
"type": "String"
},
{
"name": "newname1"
},
{
"name": "newname2"
}
]
}
}
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