将json对象转换为formData(HTML5对象) [英] Convert json object to formData (HTML5 Object)

问题描述

我已经看到许多关于将formData转换为JSON对象的文章，但是，我有完全相反的用例.我有一个JSON对象，我想将其转换为formData对象，这是端点API所必需的.

I have seen many posts about converting formData to JSON object, however, I have the exact opposite use case. I have a JSON object which I would like to convert to a formData object as this is required by my endpoint API.

我现在的代码:

formdata = new FormData();
var uploadJson = {
  "default_lang": "en",
  "words": [
    {
      "desc": $scope.selectedWord,
      "enabled": true,
      "examples": $scope.examples
    }
  ]
};

formdata.append('file', uploadJson);

但是，即使在附加了uploadJson之后，formdata也始终为空.

However, formdata is always empty even after appending uploadJson.

有人知道如何解决/做到这一点吗?

Does anyone know how to fix/do that?

推荐答案

尝试将 javascript对象 字符串化为json.

Try stringifying the javascript object to json.

formdata.append('file', JSON.stringify(uploadJson));

请注意，JSON是字符串数据格式，并且有

Note that JSON is a string data format and there is no such thing as a JSON object

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