How to use APS.NET MVC4 to generate QR Code
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I. View
@ {Layout = null;} Index $(function () {/ / generate $('# createBtn') .click (function () {createImage ();}); / / parse $('# analysisBtn') .click (function () {analysisImage ();});}); / / generate QR code function createImage () {var content = $('# content'). Val () / / ajax starts $.post ("/ ORCode/GetORImage/", {"content": content}, function (data) {$('# imgDiv') .empty (); $('# imgDiv') .append (')
); $("# ORImage"). Attr ("src", data);}); / / end of ajax} / / parse the QR code function analysisImage () {/ / get the picture name var imageUrl = $('# ORImage'). Attr ("src"); var array = imageUrl.split ('/'); var imageName = array [array.length-1] / for example: 123.jpg / / ajax starts with $.post ("/ ORCode/GetORImageContent/", {"imageName": imageName}, function (data) {$('# ORCodeContent'). Empty (); $('# ORCodeContent') .text (data);}); / / ajax ends}
Second, controller
Using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.Mvc;using Common;using System.Drawing;namespace QRCodeDemo.Controllers {public class ORCodeController: Controller {/ GET: / ORCode/ public ActionResult Index () {return View ();} [HttpPost] public ActionResult GetORImage (string content) {/ / if (string.IsNullOrEmpty (content)) / / {/ / return Content ("); / /} string timeStr = DateTime.Now.ToFileTime (). ToString () Bitmap bitmap = QRCodeOp.QRCodeEncoderUtil (content); string fileName = Server.MapPath ("~") + "Content\\ Images\\ QRImages\\" + timeStr + ".jpg"; bitmap.Save (fileName); / / Save bitmap string imageUrl = "/ Content/Images/QRImages/" + timeStr + ".jpg"; / / display picture return Content (imageUrl) } [HttpPost] public ActionResult GetORImageContent (string imageName) {string fileUrl = Server.MapPath ("~") + "Content\\ Images\\ QRImages\" + imageName; Bitmap bitMap = new Bitmap (fileUrl); string content = QRCodeOp.QRCodeDecoderUtil (bitMap); return Content (content);}
3D code generation tool class
Using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;using ThoughtWorks.QRCode.Codec;using ThoughtWorks.QRCode.Codec.Data;using System.Drawing;namespace Common {public class QRCodeOp {/ generate the QR code / the content to be encoded / return the 2D code bitmap public static Bitmap QRCodeEncoderUtil (string qrCodeContent) {QRCodeEncoder qrCodeEncoder = new QRCodeEncoder (); qrCodeEncoder.QRCodeVersion = 0 Bitmap img = qrCodeEncoder.Encode (qrCodeContent, Encoding.UTF8); / / specify utf-8 code, support Chinese return img;} / parse QR code / the parsed string public static string QRCodeDecoderUtil (Bitmap bitmap) {QRCodeDecoder decoder = new QRCodeDecoder (); string decodedString = decoder.decode (new QRCodeBitmapImage (bitmap), Encoding.UTF8) / / specify utf-8 code, which supports Chinese return decodedString;}
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