Javascript 在NodeJS项目中使用Jsonata模块

我试过健身器。看起来很酷

但是我必须在我的代码（NodeJS）中实现它

比方说

输入为：

{
“id”：“课程号1”，
“说明”：“示例课程说明”，
“内容类型”：“课程”，
“类别”：“课程”，
“持续时间秒”：500，
“专家级”：[“中级”]，
“imageUrl”：https://percipio.com/courseuuid1/imagelink",
“链接”：https://percipio.com/courseuuid1",
“方式”：[“听”、“读”、“看”]，
“语言代码”：“en”，
“父项”：空，
“发布日期”：“2018-11-19T10:23:34Z”，
“sourceName”：空，
“technologyTitle”：空，
“技术版本”：空，
“标题”：“Java”，
“收件人”：[“管理员”]
}

转换逻辑是：

{
“pkID”：id，
“描述”：描述，
“componentTypeID”：contentType，
“总长度”：持续时间秒，
“thumbnailURI”：图像URL，
“locale”：语言代码，
“createTimestamp”：publishDate，
“头衔”：头衔，
“lastUpdateUser”：由
}

我希望输出为转换逻辑格式，但通过NODEJS代码

---

请建议

我想这就是你想要的：

var inputJson={
  "id": "course_uuid1",
  "description": "Sample course description",
  "contentType": "COURSE",
  "category": "Course",
  "durationInSeconds": 500,
  "expertiseLevels": ["INTERMEDIATE"],
  "imageUrl": "https://percipio.com/courseuuid1/imagelink",
  "link": "https://percipio.com/courseuuid1",
  "modalities": ["LISTEN", "READ", "WATCH"],
  "languageCode": "en",
  "parent": null,
  "publishDate": "2018-11-19T10:23:34Z",
  "sourceName": null,
  "technologyTitle": null,
  "technologyVersion": null,
  "title": "Java",
  "by": ["admin"]
};

var outputJson={
  "pkID": inputJson.id,
  "description": inputJson.description,
  "componentTypeID": inputJson.contentType,
  "totalLength": inputJson.durationInSeconds,
  "thumbnailURI": inputJson.imageUrl,
  "locale": inputJson.languageCode,
  "createTimestamp": inputJson.publishDate,
  "title": inputJson.title,
  "lastUpdateUser": inputJson.by
}

---

安装jsonata节点模块并尝试以下代码：

var jsonata = require('jsonata');
    let input=
    {
      "id": "course_uuid1",
      "description": "Sample course description",
      "contentType": "COURSE",
      "category": "Course",
      "durationInSeconds": 500,
      "expertiseLevels": ["INTERMEDIATE"],
      "imageUrl": "https://percipio.com/courseuuid1/imagelink",
      "link": "https://percipio.com/courseuuid1",
      "modalities": ["LISTEN", "READ", "WATCH"],
      "languageCode": "en",
      "parent": null,
      "publishDate": "2018-11-19T10:23:34Z",
      "sourceName": null,
      "technologyTitle": null,
      "technologyVersion": null,
      "title": "Java",
      "by": ["admin"]
    }
    let exp="{'pkID': id,'description': description,'componentTypeID': contentType,'totalLength': durationInSeconds,'thumbnailURI': imageUrl,'locale': languageCode,'createTimestamp': publishDate,'title': title,'lastUpdateUser': by}";
    let expression = jsonata(exp);
    let expResult = expression.evaluate(input);
    console.log(expResult);

---

你的问题是什么？你试过什么？这似乎是简单的对象映射还有一件事，我想在unix时间戳中转换publishDate（输入）。如何通过这段代码实现相同的转换。@Nimmo您可以转换日期并在表达式中使用它。下面的链接可以帮助您将日期转换为UNIX时间戳