nodejsasynchronousmyMethod未定义
从async中调用我自己的模块方法时出现以下错误。
ReferenceError: RetriveLongitude is not defined at D:\Userfiles\oozen\Workspace\sas_1.0_server\sas_1.0\backgroundProcesses\searchTravelSolutions\PositionReferences.js:234:5 at D:\Userfiles\oozen\Workspace\sas_1.0_server\sas_1.0\node_modules\async\lib\async.js:570:21 at D:\Userfiles\oozen\Workspace\sas_1.0_server\sas_1.0\node_modules\async\lib\async.js:249:17 at D:\Userfiles\oozen\Workspace\sas_1.0_server\sas_1.0\node_modules\async\lib\async.js:125:13 at Array.forEach (native) PositionReferences模块如下：
var RetrieveCoordinates = function(tw, callback){ async.parallel([function(callback) { RetrieveLatitude(tw, callback); }, function(callback) { RetriveLongitude(tw, callback); } ], function(err, coordinates) { if (err) { console.log('err occuured in Lattitude / Longitude retrieval : ' + err); return callback(err); } callback(null, coordinates); }); } function RetrieveLatitude(tw, callback) { var latitude = JsonInfo.getLatitude(tw); // check if the user has already specified a place (eg Eiffel tower) in tw if (latitude != undefined) { return callback(null, latitude); } // get latitude of the airport from the DB db.collection('city').find({ "information.airports.code": place }).toArray(function(err, position) { if (err) return callback(err); latitude = position['information']['city_coordinates']['latitude']; console.log("[PositionReferences-RetrieveLatitude] found" + Lat); return callback(null, latitude); }); } function RetrieveLongitude(tw, callback) { var longitude = JsonInfo.getLongitude(tw); // check if the user has already specified a place (eg Eiffel tower) in tw if (longitude != undefined) { return callback(null, longitude); } db.collection('city').find({ "information.airports.code": place }).toArray(function(err, position) { if (err) return callback(err); city = postion['name']; longitude = position['information']['city_coordinates']['longitude']; console.log("[PositionReferences-RetrieveLatitude] found" + longitude); return callback(nulll, longitude); }); } //module.exports.RetrieveLatitude = RetrieveLatitude; //module.exports.RetrieveLongitude = RetrieveLongitude; module.exports.RetrieveCoordinates = RetrieveCoordinates;
除了声明： module.exports.RetrieveLatitude ，
我也尝试设置var that = this; 并调用Lat / Long方法。
为什么没有这个工作？
你叫RetriveLongitude ，而不是RetrieveLongitude 。