Question

我试图使用node.js重构一个复杂的JSON数组，下面是我的代码

let n = JSON.parse(JSON.stringify(arr2));
async.forEachOf(n, function(value, key, cb1) {
let obj = [];
async.forEachOf(value.flightDetail.flightDetails, function(v, k, cb2) {
    let dateTimeInfo = v.flightInformation.productDateTime;
    let isNextDay = ((dateTimeInfo.dateVariation) ? true : false);
    let sectorInf = v.flightInformation.location;
    let flightDetails = {};
    flightDetails.eType = v.flightInformation.productDetail.equipmentType;
    flightDetails.marketingCarrier = v.flightInformation.companyId.marketingCarrier;
    flightDetails.operatingCarrier = v.flightInformation.companyId.operatingCarrier || v.flightInformation.companyId.marketingCarrier;
    obj['segment-' + ((k) + 1)] = {
        departureDate: dateTimeInfo.dateOfDeparture,
        arrivalDate: dateTimeInfo.dateOfArrival,
        departureTime: dateTimeInfo.timeOfDeparture,
        arrivalTime: dateTimeInfo.timeOfArrival,
        isNextDay: isNextDay,
        sourceSector: sectorInf[0].locationId,
        sourceTerminal: sectorInf[0].terminal || "",
        desitinationSector: sectorInf[1].locationId,
        desitinationTerminal: sectorInf[1].terminal || "",
        flightInfo: flightDetails
    }
    console.log(JSON.stringify(obj)); **-- This doesn't working** 
    console.log(obj); **-- this does work** 
    cb2();
}, function() {
    arr3.push({
        flight: obj,
        price: value.priceObject
    });
    cb1();
  });
}, function() {
callback();
});

当我试图输出最终的 arr3 响应由于某种原因它似乎不起作用。但是当我安装它时，它的打印正确。

与promise / async有关吗？

Answer 1

导致问题的代码和平obj['segment-' + ((k) + 1)]的问题，我不知道为什么会发生这种情况。通过将其更改为简单的返回语句，它解决了问题。

工作样本：

let n = _.map(dataArray, function(flightObjectVal) {
  let flightObj = flightObjectVal.flightDetail.flightDetails;
  let pricedObj = flightObjectVal.priceObject;
  return {
    flight: _.map(flightObj, function(v) {
      //    Incase of flightInformation key is missing in the response object append with one.
      if (!v.flightInformation) {
        v.flightInformation = v;
      }

      //    Date & Time object
      let dateTimeInfo = v.flightInformation.productDateTime;

      //    Is the flight next day
      let isNextDay = ((dateTimeInfo.dateVariation) ? true : false);

      //    Flight sector object
      let sectorInf = v.flightInformation.location;

      //    Define restructured flight detials object
      let flightDetails = {};

      //    Flight Equipment type
      flightDetails.eType = v.flightInformation.productDetail.equipmentType;

      //    Marketing airline code 
      flightDetails.marketingCarrier = v.flightInformation.companyId.marketingCarrier;

      //    Operating airline code 
      flightDetails.operatingCarrier = v.flightInformation.companyId.operatingCarrier || v.flightInformation.companyId.marketingCarrier;

      //Return the final restructured object
      return {
        departureDate: dateTimeInfo.dateOfDeparture,
        arrivalDate: dateTimeInfo.dateOfArrival,
        departureTime: dateTimeInfo.timeOfDeparture,
        arrivalTime: dateTimeInfo.timeOfArrival,
        isNextDay: isNextDay,
        sourceSector: sectorInf[0].locationId,
        sourceTerminal: sectorInf[0].terminal || "",
        desitinationSector: sectorInf[1].locationId,
        desitinationTerminal: sectorInf[1].terminal || "",
        flightInfo: flightDetails
      }
    }),
    pricedObj: pricedObj
  }
});

我使用lodash进行了一些重构，感谢marvel308指出了async.forEachOf同步问题。这让我重新思考了整个逻辑。

控制台打印但不响应

1 个答案: