使用动态标签的液体模板转换 json

Question

我必须在 Logic 应用程序中使用 Liquid 模板转换 json。问题是 Json 属性名称（例如 DynamicTag1、DynamicTag2）在收到文件时未知。标签名称可以是生成文件之前未知的任何名称。如何使用 Liquid 转换此 Json 文件？

这是输入文件：

{
    "fields": {
        "DynamicTag1": {
            "type": "string",
            "valueString": "SR12345678",
            "text": "SR12345678",
            "page": 1,
            "confidence": 0.995
        },
        "DynamicTag2": {
            "type": "string",
            "valueString": "BR123456",
            "text": "BR123456",
            "page": 1,
            "confidence": 0.995
        },
        "SomeOtherDynamicTag3": {
            "type": "string",
            "valueString": "QR567TY",
            "text": "QR567TY",
            "page": 1,
            "confidence": 0.995
        }
    }
}

这是预期的输出：

{
    "fields": [
        {
            "FieldName": "DynamicTag1",
            "type": "string",
            "valueString": "SR12345678",
            "text": "SR12345678",
            "page": 1,
            "confidence": 0.995
        },
        {
            "FieldName": "DynamicTag2",
            "type": "string",
            "valueString": "BR123456",
            "text": "BR123456",
            "page": 1,
            "confidence": 0.995
        },
        {
            "FieldName": "SomeOtherDynamicTag3",
            "type": "string",
            "valueString": "QR567TY",
            "text": "QR567TY",
            "page": 1,
            "confidence": 0.995
        }
    ]
}

Answer 1

如果您乐于避免使用 Liquid 方法（不是说您应该），那么您可以创建一个 Azure Functions 来获取您的 JSON 并将其转换为您需要的内容。

创建一个名为 TransformJson 的新函数，然后在您的逻辑应用程序中引用它。这是代码...

#r "Newtonsoft.Json"

using System;
using System.IO;
using System.Net;
using System.Text;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

public static async Task<IActionResult> Run(HttpRequest req, ILogger log)
{
    string requestBody = String.Empty;
    using (StreamReader streamReader = new StreamReader(req.Body))
    {
        requestBody = await streamReader.ReadToEndAsync();
    }

    var jsonObject = JObject.Parse(requestBody);

    var stringBuilder = new StringBuilder();
    var stringWriter = new StringWriter(stringBuilder);

    using (JsonWriter jsonWriter = new JsonTextWriter(stringWriter))
    {
        jsonWriter.Formatting = Newtonsoft.Json.Formatting.None;

        jsonWriter.WriteStartObject();
        jsonWriter.WritePropertyName("fields");
        jsonWriter.WriteStartArray();

        // Retrieve the first object and process each object below.
        foreach (JObject subObject in jsonObject.First.Children())
        {
            foreach (JProperty dynamicObject in subObject.Children())
            {
                jsonWriter.WriteStartObject();
                jsonWriter.WritePropertyName("fieldName");
                jsonWriter.WriteValue(dynamicObject.Name);

                foreach (JProperty property in dynamicObject.First.Children())
                {
                    jsonWriter.WritePropertyName(property.Name);
                    jsonWriter.WriteValue(property.Value);
                }

                jsonWriter.WriteEndObject();
            }
        }

        jsonWriter.WriteEnd();
        jsonWriter.WriteEndObject();
    }

    return new ContentResult()
    {
        Content = stringBuilder.ToString(),
        ContentType = "application/json"
    };
}

..再参考一下，就得到了想要的结果

动作

结果

这是一个选项。

使用动态标签的液体模板转换 json

Transform json using liquid template for dynamic tags

json

liquid

azure-logic-apps

动作

结果