使用 Azure Logic App 刪除 CSV 中的空白列

Question

我在 SFTP 上有一個 CSV 文件，它有 13 列，但令人討厭的是最后一個沒有數據或 header，所以基本上每條記錄的末尾都有一個額外的逗號：

PGR,Concession ,Branch ,Branch Name ,Date ,Receipt ,Ref/EAN,Till No ,Qty , Price  , Discount , Net Price  ,

我想使用 Logic App 刪除最后的第 13 列並將文件重新保存在 BLOB 存儲中。 我已經從 SFTP 讀取文件並將整個文本存儲在一個變量中，然后使用 select 只獲取我需要的列，但除此之外我無法弄清楚如何將所有記錄導出到 1 clean BLOB 中的 csv 文件。

Answer 1

您需要處理數組中的每一行並逐一刪除最后一個逗號。 當您刪除它時，將結果添加到一個新的數組變量中。 這是流量的基礎...

這個表達式是主要的工作人員，它將刪除每行的最后一個字符......

substring(items('For_each'), 0, add(length(items('For_each')), -1))

前

后

這是邏輯應用程序的定義。 把它交給你的租戶，看看它是如何工作的。

{
    "definition": {
        "$schema": "https://schema.management.azure.com/providers/Microsoft.Logic/schemas/2016-06-01/workflowdefinition.json#",
        "actions": {
            "For_each": {
                "actions": {
                    "Append_to_string_variable": {
                        "inputs": {
                            "name": "Result String",
                            "value": "@if(equals(length(items('For_each')), 0), '', concat(substring(items('For_each'), 0, add(length(items('For_each')), -1)), '\r\n'))"
                        },
                        "runAfter": {},
                        "type": "AppendToStringVariable"
                    }
                },
                "foreach": "@variables('CSV Data')",
                "runAfter": {
                    "Initialize_Result_String": [
                        "Succeeded"
                    ]
                },
                "runtimeConfiguration": {
                    "concurrency": {
                        "repetitions": 1
                    }
                },
                "type": "Foreach"
            },
            "Initialize_CSV_Data": {
                "inputs": {
                    "variables": [
                        {
                            "name": "CSV Data",
                            "type": "array",
                            "value": [
                                "Header1,Header2,Header3,",
                                "Test1.1,Test1.2,Test1.3,",
                                "Test2.1,Test2.2,Test2.3,",
                                "",
                                "Test3.1,Test3.2,Test3.3,",
                                ""
                            ]
                        }
                    ]
                },
                "runAfter": {},
                "type": "InitializeVariable"
            },
            "Initialize_Cleansed_CSV_Data": {
                "inputs": {
                    "variables": [
                        {
                            "name": "Cleansed CSV Data",
                            "type": "array"
                        }
                    ]
                },
                "runAfter": {
                    "Initialize_CSV_Data": [
                        "Succeeded"
                    ]
                },
                "type": "InitializeVariable"
            },
            "Initialize_Result_String": {
                "inputs": {
                    "variables": [
                        {
                            "name": "Result String",
                            "type": "string"
                        }
                    ]
                },
                "runAfter": {
                    "Initialize_Cleansed_CSV_Data": [
                        "Succeeded"
                    ]
                },
                "type": "InitializeVariable"
            },
            "Initialize_variable": {
                "inputs": {
                    "variables": [
                        {
                            "name": "Result",
                            "type": "string",
                            "value": "@variables('Result String')"
                        }
                    ]
                },
                "runAfter": {
                    "For_each": [
                        "Succeeded"
                    ]
                },
                "type": "InitializeVariable"
            }
        },
        "contentVersion": "1.0.0.0",
        "outputs": {},
        "parameters": {},
        "triggers": {
            "Recurrence": {
                "evaluatedRecurrence": {
                    "frequency": "Month",
                    "interval": 3
                },
                "recurrence": {
                    "frequency": "Month",
                    "interval": 3
                },
                "type": "Recurrence"
            }
        }
    },
    "parameters": {}
}