高校手机签到系统——第一部分Authority权限系统（上）
高校手机签到系统——第一部分Authority权限系统（下）
关于zxing.net的使用网上已有很多说明，可是在mvc模式下，怎么保存生成的图片返回链接？
使用zxing生成bitmap:
|
1
2
3
4
5
6
7
8
9
10
11 |
BarcodeWriter writer = new
BarcodeWriter { Format = BarcodeFormat.QR_CODE, Options = new
EncodingOptions { Width = 400, Height = 400 } }; string
time = DateTime.Now.ToString(); Bitmap bitmap = writer.Write(id + "|"
+ time); |
此bitmap有一save方法Image.Save (String, ImageCodecInfo, EncoderParameters)，参数分别是路径，编码器，以及编码器参数。
初始化编码器ImageCodecInfo imageCodecInfo = (from e in ImageCodecInfo.GetImageEncoders() where e.MimeType == "image/jpeg" select e).First();
初始化编码器参数EncoderParameters encoderParameters = new
EncoderParameters(1);
EncoderParameter encoderParameter = new EncoderParameter(Encoder.Quality,
75L);
接下来保存到相应的路径即可。完整的代码：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28 |
public
ActionResult LoadQrcode(string
id) { BarcodeWriter writer = new
BarcodeWriter { Format = BarcodeFormat.QR_CODE, Options = new
EncodingOptions { Width = 400, Height = 400 } }; string
time = DateTime.Now.ToString(); Bitmap bitmap = writer.Write(id + "|"
+ time); ImageCodecInfo imageCodecInfo = (from
e in
ImageCodecInfo.GetImageEncoders() where
e.MimeType == "image/jpeg"
select e).First(); EncoderParameters encoderParameters = new
EncoderParameters(1); EncoderParameter encoderParameter = new
EncoderParameter(Encoder.Quality, 75L); encoderParameters.Param[0] = encoderParameter; if
(Directory.Exists(Server.MapPath("/Images/"
+ id + "/"))) { FileInfo[] files = new
DirectoryInfo(Server.MapPath("/Images/"
+ id + "/")).GetFiles(); foreach
(FileInfo fi in
files) System.IO.File.Delete(Path.Combine(Server.MapPath("/Images/"
+ id + "/"), fi.Name)); } else Directory.CreateDirectory(Server.MapPath("/Images/"
+ id + "/")); bitmap.Save(Path.Combine(Server.MapPath("/Images/"
+ id + "/"), DateTime.Now.Date.ToFileTimeUtc()+ ".jpeg"), imageCodecInfo, encoderParameters); return
Json("/Images/"
+ id + "/"
+ DateTime.Now.Date.ToFileTimeUtc() + ".jpeg", JsonRequestBehavior.AllowGet); } |
高校手机签到系统——zxing.net生成二维码（补充）,布布扣,bubuko.com
原文：http://www.cnblogs.com/DKSL/p/zxing_qrcode.html