如果Java语言中的日期不正确，请更改日期格式

Question

I have created a mobile app that scans a QR-CODE that has various information embedded within it. One of the bits of information is a date.

There has been changes with in the QR-CODE from the previous versions with the format of the date. The previous date format was mm/dd and the new version is yy-MM-dd.

I am able to get it to scan the new version of the labels or the old ones, but not both. I need to get it to recognize bot types. I am not sure if there is a way to use an if statement to recognize the old format and convert it to the new format.

Here is an example of the working code using the new labels.

(function(){
'use strict';

var app = angular.module('Controllers', []);
var baseUrl = 'https://apps.laticrete.com/LSCWebApiService/lscapi/';

app.controller('BarcodeCtrl', ['$scope', '$state', '$stateParams', '$http', 'alertsManager', '$timeout', 'localStorageService', '$cordovaBarcodeScanner', '$cordovaGeolocation', '$filter',
    function($scope, $state, $stateParams, $http, alertsManager, $timeout, localStorageService, $cordovaBarcodeScanner, $cordovaGeolocation, $filter) {
        var SessionId = localStorageService.get('SessionId');

        // Get GeoLocation
        $cordovaGeolocation
            .getCurrentPosition()
            .then(function(position) {
                $scope.lat = position.coords.latitude;
        $scope.long = position.coords.longitude;
            });

document.addEventListener("deviceready", function() {
    $scope.scanMaterial = function() {


        $cordovaBarcodeScanner
            .scan()
            .then(function(result) {

                var codeArray = result.text.split(',');
                $scope.SKU = codeArray[1].replace("I:", "").trim();
                $scope.ControlNumber = codeArray[0].replace("W:", "").trim(); 
                //$scope.ManufactureDate = codeArray[2].replace("MFG:", "").trim();
                $scope.ManufactureDate = codeArray[2].replace("MFG:", "20").replace(/(\d{4})(\d{2})(\d{2})/, "$1-$2-$3").trim();

                $scope.BatchCode = codeArray[3].replace("B:", "").trim();

                var dataObj = {
                    SessionId: SessionId,
                    JobId: $stateParams.JobId,
                    ManufactureDate: $scope.ManufactureDate, 
                    BatchCode: $scope.BatchCode,
                    SKU: $scope.SKU,
                    ControlNumber: $scope.ControlNumber,
                    CreatedClient: new Date(),
                    Latitude: $scope.lat,
                    Longitude: $scope.long, 
                    Product: { Id : 1}
                };

                $http.post(baseUrl + 'Material/PostNewMaterial', dataObj)
                    .success(function() {
                        alertsManager.addAlert('Success: You have successfully added material.', 'alert-success');
                        $state.go('^');
                    }).error(function(dataObj) {
                        alertsManager.addAlert('Failure Meesage: ' + JSON.stringify({dataObj:dataObj}), 'alert-danger');
                    });
                    $timeout(function(){
                        alertsManager.clearAlerts();
                    }, 5000);

            }, function(error) {
                console.log("An error has happened " + error);
            });
    };
}, false);


}]);

})();

The part of the code I am asking for help on is $scope.ManufactureDate

Thank You in advance.

Answer 1

Check if the code matches one of the formats and if it does, parse it accordingly.

if (codeArray[2].match(/MFG:\d+-\d+-\d+/) !== null) {
    /* The format is of 'MFG:000-000-000', \d+ matches 1..n numbers */
    ...
}

Or you could combine these to a one regex:

let matches = codeArray[2].match(/MFG:(20(\d{2})-\d{2}-\d{2})|(\d{2}/\d{2}))/);

See String.prototype.match