QRCodeHelper 二维码生成

QRCodeHelper 二维码生成

  1 using System;
  2 using System.Drawing;
  3 using ThoughtWorks.QRCode.Codec;
  4 using System.IO;
  5 using System.Text;
  6 using System.Drawing.Drawing2D;
  7 using System.Web;
  8 
  9 namespace APP.QrCodes
 10 {
 11     public class QRCodeHelper
 12     {
 13         public enum ImgEnum
 14         {
 15             JPG
 16         }
 17 
 18         public static string GetImgType(ImgEnum jpg)
 19         {
 20             string ext = string.Empty;
 21             switch (jpg)
 22             {
 23                 case ImgEnum.JPG:
 24                     ext = ".jpg";
 25                     break;
 26                 default:
 27                     break;
 28             }
 29             return ext;
 30         }
 31         /// 
  
 32         /// 生成二维码图片  
 33         ///   
 34         /// 要生成二维码的字符串       
 35         /// 大小尺寸  
 36         /// 二维码图片  
 37         public Bitmap Create_ImgCode(string codeNumber, int size)
 38         {
 39             //创建二维码生成类  
 40             QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
 41             //设置编码模式  
 42             qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
 43             //设置编码测量度  
 44             qrCodeEncoder.QRCodeScale = size;
 45             //设置编码版本  
 46             qrCodeEncoder.QRCodeVersion = 0;
 47             //设置编码错误纠正  
 48             qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
 49             //生成二维码图片  
 50             System.Drawing.Bitmap image = qrCodeEncoder.Encode(codeNumber, Encoding.UTF8);
 51              
 52             return image;
 53         }
 54 
 55         public static string CreateLogQrCode(string strContent)
 56         {
 57             QRCodeEncoder qrCodeEncoder = new QRCodeEncoder();
 58             qrCodeEncoder.QRCodeEncodeMode = QRCodeEncoder.ENCODE_MODE.BYTE;
 59             qrCodeEncoder.QRCodeScale = 5;
 60             qrCodeEncoder.QRCodeVersion = 8;
 61             qrCodeEncoder.QRCodeErrorCorrect = QRCodeEncoder.ERROR_CORRECTION.M;
 62             System.Drawing.Image image = qrCodeEncoder.Encode(strContent, Encoding.UTF8);//生成二维码图片  
 63 
 64             System.IO.MemoryStream MStream = new System.IO.MemoryStream();
 65             image.Save(MStream,System.Drawing.Imaging.ImageFormat.Png);
 66 
 67             System.IO.MemoryStream MStream1 = new System.IO.MemoryStream();
 68             CombinImage(image, HttpRuntime.AppDomainAppPath + "QrCodes/logo.png").Save(MStream1, System.Drawing.Imaging.ImageFormat.Png);
 69 
 70             string reStr = Convert.ToBase64String(MStream1.ToArray());
 71             //image.Dispose();  
 72             MStream.Dispose();
 73             MStream1.Dispose();
 74             return reStr;
 75         }
 76 
 77         public string SaveImg(Bitmap bmp, string path)
 78         { 
 79             bmp.Save(path);
 80             return path;
 81         }
 82 
 83         /// 

 84         /// 保存图片
 85         /// 
 86         /// 源
 87         /// 路径
 88         /// 格式
 89         /// 
 90         public bool SaveImg(Bitmap bmp, string path,ImgEnum jpg)
 91         {
 92             try
 93             {
 94                 bmp.Save(path);
 95                 return true;
 96             }
 97             catch
 98             {
 99                 return false;
100             }
101         }
102 
103         /// 

104         /// 保存图片
105         /// 
106         /// 源
107         /// 路径
108         /// 文件名
109         /// 
110         public bool SaveImg(Bitmap bmp, string path,string fileName)
111         {
112             try
113             {
114                 bmp.Save(path+fileName);
115                 return true;
116             }
117             catch
118             {
119                 return false;
120             }
121         }
122 
123         /// 

124         /// 保存图片
125         /// 
126         /// 源
127         /// 路径
128         /// 文件名
129         /// 格式
130         /// 
131         public bool SaveImg(Bitmap bmp, string path, string fileName,ImgEnum jpg)
132         {
133             try
134             {
135                 var ext = GetImgType(jpg);
136                 bmp.Save(path + fileName + ext);
137                 return true;
138             }
139             catch
140             {
141                 return false;
142             }
143         }
144 
145         /// 

146         /// Bitmap转化base64编码
147         /// 
148         /// 
149         /// 
150         public string GetBase64String(Bitmap bmp)
151         {
152             MemoryStream ms = new MemoryStream();
153             bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
154             byte[] arr = new byte[ms.Length];
155             ms.Position = 0;
156             ms.Read(arr, 0, (int)ms.Length);
157             ms.Close();
158             string pic = Convert.ToBase64String(arr);
159             return pic;
160         }
161 
162         /// 

163         /// 得到流
164         /// 
165         /// 
166         /// 
167         public Stream GetStream(Bitmap bmp)
168         {
169             MemoryStream ms = new MemoryStream();
170             bmp.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
171             byte[] arr = new byte[ms.Length];
172             ms.Position = 0;
173             ms.Read(arr, 0, (int)ms.Length);
174             ms.Close();
175             return ms;
176         }
177 
178 
179         /// 
   
180         /// 调用此函数后使此两种图片合并，类似相册，有个    
181         /// 背景图，中间贴自己的目标图片    
182         ///     
183         /// 粘贴的源图片    
184         /// 粘贴的目标图片    
185         /// 
   
186         public static Image CombinImage(Image imgBack, string destImg)
187         {
188             Image img = Image.FromFile(destImg);        //照片图片      
189             if (img.Height != 65 || img.Width != 65)
190             {
191                 img = KiResizeImage(img, 65, 65, 0);
192             }
193             Graphics g = Graphics.FromImage(imgBack);
194 
195             g.DrawImage(imgBack, 0, 0, imgBack.Width, imgBack.Height);      //g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);     
196 
197             //g.FillRectangle(System.Drawing.Brushes.White, imgBack.Width / 2 - img.Width / 2 - 1, imgBack.Width / 2 - img.Width / 2 - 1,1,1);//相片四周刷一层黑色边框    
198 
199             //g.DrawImage(img, 照片与相框的左边距, 照片与相框的上边距, 照片宽, 照片高);    
200 
201             g.DrawImage(img, imgBack.Width / 2 - img.Width / 2, imgBack.Width / 2 - img.Width / 2, img.Width, img.Height);
202             GC.Collect();
203             return imgBack;
204         }  
205   
206         /// 
    
207         /// Resize图片    
208         ///     
209         /// 原始Bitmap    
210         /// 新的宽度    
211         /// 新的高度    
212         /// 保留着，暂时未用    
213         /// 处理以后的图片    
214         public static Image KiResizeImage(Image bmp, int newW, int newH, int Mode)
215         {
216             try
217             {
218                 Image b = new Bitmap(newW, newH);
219                 Graphics g = Graphics.FromImage(b);
220                 // 插值算法的质量    
221                 g.InterpolationMode = InterpolationMode.HighQualityBicubic;
222                 g.DrawImage(bmp, new Rectangle(0, 0, newW, newH), new Rectangle(0, 0, bmp.Width, bmp.Height), GraphicsUnit.Pixel);
223                 g.Dispose();
224                 return b;
225             }
226             catch
227             {
228                 return null;
229             }
230         }  
231     }
232 }