javascript - '引用错误: httpResponse is not defined' When parsing JSON response of Parse httpRequest

Question

我的 promise 语句多次 ping eBay，每次都使用 matchCenterItem 的属性作为参数。当它运行完所有实例后，我希望它将所有响应发送到我的 iOS 应用程序。

我尝试在 response.success 中执行此操作会导致错误，指出 httpResponse is not Defined，即使我事先定义了它。

Parse.Cloud.define("MatchCenterTest", function(request, response) {
    //defines which parse class to iterate through
    var matchCenterItem = Parse.Object.extend("matchCenterItem");
    var query = new Parse.Query(matchCenterItem);
    var promises = [];
    //setting the limit of items at 10 for now
    query.limit(10);
    query.find().then(function(results) {
        for (i=0; i<results.length; i++) {
            url = 'http://svcs.ebay.com/services/search/FindingService/v1';
            //push function containing criteria for every matchCenterItem into promises array
              promises.push(function() {
                return Parse.Cloud.httpRequest({
                  url: url,
                  params: {
                      'OPERATION-NAME' : 'findItemsByKeywords',
                      'SERVICE-VERSION' : '1.12.0',
                      'SECURITY-APPNAME' : '*APP ID GOES HERE*',
                      'GLOBAL-ID' : 'EBAY-US',
                      'RESPONSE-DATA-FORMAT' : 'JSON',
                      'REST-PAYLOAD&sortOrder' : 'BestMatch',
                      'paginationInput.entriesPerPage' : '3',
                      'outputSelector=AspectHistogram&itemFilter(0).name=Condition&itemFilter(0).value(0)' : results[i].get('itemCondition'),
                      'itemFilter(1).name=MaxPrice&itemFilter(1).value' : results[i].get('maxPrice'),
                      'itemFilter(1).paramName=Currency&itemFilter(1).paramValue' : 'USD',
                      'itemFilter(2).name=MinPrice&itemFilter(2).value' : results[i].get('minPrice'),
                      'itemFilter(2).paramName=Currency&itemFilter(2).paramValue' : 'USD',
                      //'itemFilter(3).name=LocatedIn&itemFilter(3).Value' : request.params.itemLocation,
                      'itemFilter(3).name=ListingType&itemFilter(3).value' : 'FixedPrice',
                      'keywords' : results[i].get('searchTerm'),
                  }
                });
              });
        }
        Parse.Promise.when(promises).then(function() {
          var eBayResults = JSON.parse(httpResponse.text);
          for (i=0; i<eBayResults.length; i++)
          {
            console.log(eBayResults[i]); // So you can see what the response 
                                     // looks like for each httpRequest that was made
          }
          // and by the way if this is the end of your function, then here you can call
          response.success(eBayResults);
        }, function(err) {
                  console.log('error!');
                  response.error();
           });
    });
});

Answer 1

尝试将此片段更改为

Parse.Promise.when(promises).then(function(httpResponse) {
      var eBayResults = JSON.parse(httpResponse.text);
      for (i=0; i<eBayResults.length; i++)
      {
        console.log(eBayResults[i]); // So you can see what the response 
                                 // looks like for each httpRequest that was made
      }

假设您的 Promise 对象返回 httpResponse。