如何将字节数组(Blob)发送到 GraphQL 突变 [英] How to send byte array (Blob) to GraphQL mutation

问题描述

我们有一个带有字节数组 (Blob) 字段的 GraphQL 突变.如何使用 Insomnia 或 GraphQL playground 等工具发送字节数组数据来测试 API?

We have a GraphQL mutation with a byte array (Blob) field. How can I use tools like Insomnia or GraphQL playground to send byte array data to test the API?

mutation {
  saveSomething(something: {
    contentByteArray: [97, 110, 103, 101, 108, 111]
  }) {
    content
  }
}

推荐答案

你可以这样发送数据，但是我理解 GraphQL 发送一个List 字节而不是一个数组.在 C# 中，这样的字段(我正在上传照片)将被描述为

You can send data like that, however I understand that GraphQL sends a List of bytes rather than an array. In C# such a field (I'm uploading a photo) would be described as

Field<ListGraphType<ByteGraphType>>("photo");

并且需要转换回数组才能保存到数据库中例如

and would need to be converted back into an array in order to be saved to the database e.g.

IDictionary<string, object> dicPlayer = (IDictionary<string, object>)context.Arguments["input"];
...

if (dicPlayer.ContainsKey("photo")) {
    if (dicPlayer["photo"] == null) {
        playerInput.Photo = null;
    } else {
        List<byte> lstB = new List<byte>();
        foreach (var objB in (List<object>)dicPlayer["photo"]) {
            byte b = (byte)objB;
            lstB.Add(b);
        }
        byte[] arrB = lstB.ToArray();
        playerInput.Photo = arrB;
    }
}

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