Read_Upload_Local_File

//XML View
						<html:input id="myInput" style="display:none" type="file"/>
						<Button icon="sap-icon://upload" press="uploadFile" text="Upload"/>
						<Button icon="sap-icon://download" press="downloadTemplate" text="Template"/>
						
//Controller
	onAfterRendering: function() {
		var that = this;

		function CSVToArray(strData, strDelimiter) {
			// Check to see if the delimiter is defined. If not,
			// then default to comma.
			strDelimiter = (strDelimiter || ",");
			// Create a regular expression to parse the CSV values.
			var objPattern = new RegExp((
				// Delimiters.
				"(\\" + strDelimiter + "|\\r?\\n|\\r|^)" +
				// Quoted fields.
				"(?:\"([^\"]*(?:\"\"[^\"]*)*)\"|" +
				// Standard fields.
				"([^\"\\" + strDelimiter + "\\r\\n]*))"), "gi");
			// Create an array to hold our data. Give the array
			// a default empty first row.
			var arrData = [
				[]
			];
			// Create an array to hold our individual pattern
			// matching groups.
			var arrMatches = null;
			// Keep looping over the regular expression matches
			// until we can no longer find a match.
			while (arrMatches = objPattern.exec(strData)) {
				// Get the delimiter that was found.
				var strMatchedDelimiter = arrMatches[1];
				// Check to see if the given delimiter has a length
				// (is not the start of string) and if it matches
				// field delimiter. If id does not, then we know
				// that this delimiter is a row delimiter.
				if (strMatchedDelimiter.length && (strMatchedDelimiter != strDelimiter)) {
					// Since we have reached a new row of data,
					// add an empty row to our data array.
					arrData.push([]);
				}
				// Now that we have our delimiter out of the way,
				// let's check to see which kind of value we
				// captured (quoted or unquoted).
				if (arrMatches[2]) {
					// We found a quoted value. When we capture
					// this value, unescape any double quotes.
					var strMatchedValue = arrMatches[2].replace(
						new RegExp("\"\"", "g"), "\"");
				} else {
					// We found a non-quoted value.
					var strMatchedValue = arrMatches[3];
				}
				// Now that we have our value string, let's add
				// it to the data array.
				arrData[arrData.length - 1].push(strMatchedValue);
			}
			// Return the parsed data.
			return (arrData);
		}

		function CSV2JSON(csv) {
			var array = CSVToArray(csv);
			var objArray = [];
			for (var i = 1; i < array.length; i++) {
				objArray[i - 1] = {};
				for (var k = 0; k < array[0].length && k < array[i].length; k++) {
					var key = array[0][k];
					objArray[i - 1][key] = array[i][k];
				}
			}

			var json = JSON.stringify(objArray);
			var str = json.replace(/},/g, "},\r\n");

			return str;
		}

		function resetFormElement(e) {
			//reset the elemetn
			e.wrap("<form>").closest("form").get(0).reset();
			e.unwrap();
		}

		var fileInput = $("#" + this.getView().byId("myInput").getId());
		fileInput.change(
			function(event) {
				var fileReader = new FileReader();
				fileReader.onload = function(evt) {
					var content = evt.target.result;
					var jsonContent = CSV2JSON(content);

					//Read current model values
					var currentData = that.oApplicationFacade.getApplicationModel("soc_cart").getData();
					Array.prototype.push.apply(currentData.oShoppingCartItems, JSON.parse(jsonContent));
					that.oApplicationFacade.getApplicationModel("soc_cart").setData(currentData);

					//reset fileInput so that same file can be uploaded again
					resetFormElement(fileInput);
				};
				fileReader.readAsText(event.target.files[0]); //Only one file at a time. Once file is read, "onload" of the file reader is triggered.
			});

	},
	uploadFile: function() {
		//input html element's(type file) 'click' is triggered, which will show file selection dialog. 
		//Once the file is selected, input html element's 'change' is triggered.
		$("#" + this.getView().byId("myInput").getId()).click();
	},
	downloadTemplate: function() { //You can store the template file within the app
		window.location = "/sap/bc/ui5_ui5/sap/zso_create_ext/webapp/util/UploadTemplate.csv";
	}