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javascript - 在 JavaScript 中解析 JSON 对象以生成数组

问题描述

我有以下 JSON，里面有filesand folders（保留字）来指示哪些是文件和文件夹。

the_name_of_the_folder_itself:
    "files": [array_of_files_]
    "folders": [objects of folders inside this dir]

更容易看到 JSON 本身：

{
    "configfiles": {
        "folders": {
            "dir1": {
                "files": [
                    "data.dat",
                    "data2.dat"
                ]
            },
            "dir2": {
                "folders": {
                    "subffolder": {
                        "files": [
                            []
                        ]
                    },
                    "subffolder_2": {
                        "files": [
                            "other.dat"
                        ]
                    }
                },
                "files": [
                    []
                ]
            }
        },
        "files": [
            []
        ],
        "LoadBase": "barfoo IGNORE THIS"
    }
}

如何从该 JSON 中获取所有路径和文件，这意味着有一个包含以下元素的输出数组？

configfiles/
configfiles/dir1/
configfiles/dir1/data.dat
configfiles/dir1/data2.dat
configfiles/dir2/
configfiles/dir2/subffolder/
configfiles/dir2/subffolder_2/
configfiles/dir2/subffolder_2/other.dat

到目前为止，这是我的尝试：

function getPathAndFolder(folderPath)
{
    foldersArray = Object.keys(folderPath)
    foldersArray.forEach(function callback(folderName, index, array)
    {
        finalArray.push(folderName)
        filesArray = folderPath[folderName].files
        filesArray.forEach(function callback(fileName, index, array)
        {
            finalPath = folderName + "/" + fileName
        });

        // Call it again
        //getPathAndFolder()

    });
}

finalArray = []
getPathAndFolder(inputJSONobject)

有人可以帮我一把吗？

标签： javascriptarraysjsonobject

解决方案

您可以使用循环创建递归函数，for...in该函数将数据作为第一个参数和键数组添加到您可以传递的结果中时忽略files，folder等等......

const json = {"configfiles":{"folders":{"dir1":{"files":["data.dat","data2.dat"]},"dir2":{"folders":{"subffolder":{"files":[[]]},"subffolder_2":{"files":["other.dat"]}},"files":[[]]}},"files":[[]],"LoadBase":"barfoo IGNORE THIS"}}

function getPaths(data, ignored = [], prev = '') {
  const result = []

  for (let i in data) {
    let path = prev;

    if (!ignored.includes(i)) {
      if (!Array.isArray(data)) {
        path += (prev.length ? '/' : '') + i
        result.push(path)
      } else if (data[i].length) {
        result.push(path + '/' + data[i])
      }
    }

    if (typeof data[i] === 'object') {
      result.push(...getPaths(data[i], ignored, path))
    }
  }

  return result;
}

const ignored = ['files', 'folders', 'LoadBase']
const result = getPaths(json, ignored);
console.log(result)

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