java二维码生成与解析代码实现

java二维码生成与解析代码实现所需jar包：QRCode.jarTwoDimensionCode类：二维码操作核心类 javaview plaincopy1. packageqrcode;2. 3. importjava.awt.Color;4. importjava.awt.Graphics2D;5. importjava.awt.image.BufferedImage;6. importjava.io.File;7. importjava.io.IOException;8. importjava.io.InputStream;9. importjava.io.OutputStream;10. 11. importjavax.imageio.ImageIO;12. 13. importjp.sourceforge.qrcode.QRCodeDecoder;14. importjp.sourceforge.qrcode.exception.DecodingFailedException;15. 16. importcom.swetake.util.Qrcode;17. 18. publicclassTwoDimensionCode19. 20. /*21. *生成二维码(QRCode)图片22. *paramcontent存储内容23. *paramimgPath图片路径24. */25. publicvoidencoderQRCode(Stringcontent,StringimgPath)26. this.encoderQRCode(content,imgPath,png,7);27. 28. 29. /*30. *生成二维码(QRCode)图片31. *paramcontent存储内容32. *paramoutput输出流33. */34. publicvoidencoderQRCode(Stringcontent,OutputStreamoutput)35. this.encoderQRCode(content,output,png,7);36. 37. 38. /*39. *生成二维码(QRCode)图片40. *paramcontent存储内容41. *paramimgPath图片路径42. *paramimgType图片类型43. */44. publicvoidencoderQRCode(Stringcontent,StringimgPath,StringimgType)45. this.encoderQRCode(content,imgPath,imgType,7);46. 47. 48. /*49. *生成二维码(QRCode)图片50. *paramcontent存储内容51. *paramoutput输出流52. *paramimgType图片类型53. */54. publicvoidencoderQRCode(Stringcontent,OutputStreamoutput,StringimgType)55. this.encoderQRCode(content,output,imgType,7);56. 57. 58. /*59. *生成二维码(QRCode)图片60. *paramcontent存储内容61. *paramimgPath图片路径62. *paramimgType图片类型63. *paramsize二维码尺寸64. */65. publicvoidencoderQRCode(Stringcontent,StringimgPath,StringimgType,intsize)66. try67. BufferedImagebufImg=this.qRCodeCommon(content,imgType,size);68. 69. FileimgFile=newFile(imgPath);70. /生成二维码QRCode图片71. ImageIO.write(bufImg,imgType,imgFile);72. catch(Exceptione)73. e.printStackTrace();74. 75. 76. 77. /*78. *生成二维码(QRCode)图片79. *paramcontent存储内容80. *paramoutput输出流81. *paramimgType图片类型82. *paramsize二维码尺寸83. */84. publicvoidencoderQRCode(Stringcontent,OutputStreamoutput,StringimgType,intsize)85. try86. BufferedImagebufImg=this.qRCodeCommon(content,imgType,size);87. /生成二维码QRCode图片88. ImageIO.write(bufImg,imgType,output);89. catch(Exceptione)90. e.printStackTrace();91. 92. 93. 94. /*95. *生成二维码(QRCode)图片的公共方法96. *paramcontent存储内容97. *paramimgType图片类型98. *paramsize二维码尺寸99. *return100. */101. privateBufferedImageqRCodeCommon(Stringcontent,StringimgType,intsize)102. BufferedImagebufImg=null;103. try104. QrcodeqrcodeHandler=newQrcode();105. /设置二维码排错率，可选L(7%)、M(15%)、Q(25%)、H(30%)，排错率越高可存储的信息越少，但对二维码清晰度的要求越小106. qrcodeHandler.setQrcodeErrorCorrect(M);107. qrcodeHandler.setQrcodeEncodeMode(B);108. /设置设置二维码尺寸，取值范围1-40，值越大尺寸越大，可存储的信息越大109. qrcodeHandler.setQrcodeVersion(size);110. /获得内容的字节数组，设置编码格式111. bytecontentBytes=content.getBytes(utf-8);112. /图片尺寸113. intimgSize=67+12*(size-1);114. bufImg=newBufferedImage(imgSize,imgSize,BufferedImage.TYPE_INT_RGB);115. Graphics2Dgs=bufImg.createGraphics();116. /设置背景颜色117. gs.setBackground(Color.WHITE);118. gs.clearRect(0,0,imgSize,imgSize);119. 120. /设定图像颜色BLACK121. gs.setColor(Color.BLACK);122. /设置偏移量，不设置可能导致解析出错123. intpixoff=2;124. /输出内容二维码125. if(contentBytes.length0&contentBytes.length800)126. booleancodeOut=qrcodeHandler.calQrcode(contentBytes);127. for(inti=0;icodeOut.length;i+)128. for(intj=0;jcodeOut.length;j+)129. if(codeOutji)130. gs.fillRect(j*3+pixoff,i*3+pixoff,3,3);131. 132. 133. 134. else135. thrownewException(QRCodecontentbyteslength=+contentBytes.length+notin0,800.);136. 137. gs.dispose();138. bufImg.flush();139. catch(Exceptione)140. e.printStackTrace();141. 142. returnbufImg;143. 144. 145. /*146. *解析二维码（QRCode）147. *paramimgPath图片路径148. *return149. */150. publicStringdecoderQRCode(StringimgPath)151. /QRCode二维码图片的文件152. FileimageFile=newFile(imgPath);153. BufferedImagebufImg=null;154. Stringcontent=null;155. try156. bufImg=ImageIO.read(imageFile);157. QRCodeDecoderdecoder=newQRCodeDecoder();158. content=newString(decoder.decode(newTwoDimensionCodeImage(bufImg),utf-8);159. catch(IOExceptione)160. System.out.println(Error:+e.getMessage();161. e.printStackTrace();162. catch(DecodingFailedExceptiondfe)163. System.out.println(Error:+dfe.getMessage();164. dfe.printStackTrace();165. 166. returncontent;167. 168. 169. /*170. *解析二维码（QRCode）171. *paraminput输入流172. *return173. */174. publicStringdecoderQRCode(InputStreaminput)175. BufferedImagebufImg=null;176. Stringcontent=null;177. try178. bufImg=ImageIO.read(input);179. QRCodeDecoderdecoder=newQRCodeDecoder();180. content=newString(decoder.decode(newTwoDimensionCodeImage(bufImg),utf-8);181. catch(IOExceptione)182. System.out.println(Error:+e.getMessage();183. e.printStackTrace();184. catch(DecodingFailedExceptiondfe)185. System.out.println(Error:+dfe.getMessage();186. dfe.printStackTrace();187. 188. returncontent;189. 190. 191. publicstaticvoidmain(Stringargs)192. StringimgPath=G:/TDDOWNLOAD/Michael_QRCode.png;193. StringencoderContent=Hello大大、小小,welcometoQRCode!+nMyblogaaa+nEMailbbb;194. TwoDimensionCodehandler=newTwoDimensionCode();195. handler.encoderQRCode(encoderContent,imgPath,png);196. /try197. /OutputStreamoutput=newFileOutputStream(imgPath);198. /handler.encoderQRCode(content,output);199. /catch(Exceptione)200. /e.printStackTrace();201. /202. System.out.println(=encodersuccess);203. StringdecoderContent=handler.decoderQRCode(imgPath);204. System.out.println(解析结果如下：);205. System.out.println(decoderContent);206. System.out.println(=decodersuccess!);207. 208. TwoDimensionCodeImage类：二维码图片对象javaview plaincopy1. packageqrcode;2. 3. importjava.awt.image.BufferedImage;4. 5. importjp.sourceforge.qrcode.data.QRCodeImage;6. 7. publicclassTwoDimensionCodeImageimplementsQRCodeImage8. 9. BufferedImagebufImg;10. 11. publicTwoDim