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Java制作二維碼代碼,中間不帶logo圖片

Java制作二維碼代碼,中間不帶logo圖片

作者:elc 來源: 時間:2017-01-04 訪問次數:3132

  package main;

  import java.awt.Color;

  import java.awt.Graphics2D;

  import java.awt.image.BufferedImage;

  import java.io.File;

  import java.io.IOException;

  import java.io.InputStream;

  import java.io.OutputStream;

  import javax.imageio.ImageIO;

  import jp.sourceforge.qrcode.QRCodeDecoder;

  import jp.sourceforge.qrcode.exception.DecodingFailedException;

  import com.swetake.util.Qrcode;

  public class TwoDimensionCode {

  public void encoderQRCode(String content, String imgPath) {

  this.encoderQRCode(content, imgPath, "png", 7);

  }

  public void encoderQRCode(String content, OutputStream output) {

  this.encoderQRCode(content, output, "png", 7);

  }

  public void encoderQRCode(String content, String imgPath, String imgType) {

  this.encoderQRCode(content, imgPath, imgType, 7);

  }

  public void encoderQRCode(String content, OutputStream output, String imgType) {

  this.encoderQRCode(content, output, imgType, 7);

  }

  public void encoderQRCode(String content, String imgPath, String imgType, int size) {

  try {

  BufferedImage bufImg = this.qRCodeCommon(content, imgType, size);

  File imgFile = new File(imgPath);

  // 生成二維碼QRCode圖片

  ImageIO.write(bufImg, imgType, imgFile);

  } catch (Exception e) {

  e.printStackTrace();

  }

  }

  public void encoderQRCode(String content, OutputStream output, String imgType, int size) {

  try {

  BufferedImage bufImg = this.qRCodeCommon(content, imgType, size);

  // 生成二維碼QRCode圖片

  ImageIO.write(bufImg, imgType, output);

  } catch (Exception e) {

  e.printStackTrace();

  }

  }

  private BufferedImage qRCodeCommon(String content, String imgType, int size) {

  BufferedImage bufImg = null;

  try {

  Qrcode qrcodeHandler = new Qrcode();

  // 設置二維碼排錯率,可選L(7%)、M(15%)、Q(25%)、H(30%),排錯率越高可存儲的信息越少,但對二維碼清晰度的要求越小

  qrcodeHandler.setQrcodeErrorCorrect('M');

  qrcodeHandler.setQrcodeEncodeMode('B');

  // 設置設置二維碼尺寸,取值范圍1-40,值越大尺寸越大,可存儲的信息越大

  qrcodeHandler.setQrcodeVersion(size);

  // 獲得內容的字節數組,設置編碼格式

  byte[] contentBytes = content.getBytes("utf-8");

  // 圖片尺寸

  int imgSize = 67 + 12 * (size - 1);

  bufImg = new BufferedImage(imgSize, imgSize, BufferedImage.TYPE_INT_RGB);

  Graphics2D gs = bufImg.createGraphics();

  // 設置背景顏色

  gs.setBackground(Color.WHITE);

  gs.clearRect(0, 0, imgSize, imgSize);

  // 設定圖像顏色> BLACK

  gs.setColor(Color.BLACK);

  // 設置偏移量,不設置可能導致解析出錯

  int pixoff = 2;

  // 輸出內容> 二維碼

  if (contentBytes.length > 0 && contentBytes.length < 800) {

  boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);

  for (int i = 0; i < codeOut.length; i++) {

  for (int j = 0; j < codeOut.length; j++) {

  if (codeOut[j][i]) {

  gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);

  }

  }

  }

  } else {

  throw new Exception("QRCode content bytes length = " + contentBytes.length + " not in [0, 800].");

  }

  gs.dispose();

  bufImg.flush();

  } catch (Exception e) {

  e.printStackTrace();

  }

  return bufImg;

  }

  public String decoderQRCode(String imgPath) {

  // QRCode 二維碼圖片的文件

  File imageFile = new File(imgPath);

  BufferedImage bufImg = null;

  String content = null;

  try {

  bufImg = ImageIO.read(imageFile);

  QRCodeDecoder decoder = new QRCodeDecoder();

  content = new String(decoder.decode(new TwoDimensionCodeImage(bufImg)), "utf-8");

  } catch (IOException e) {

  System.out.println("Error: " + e.getMessage());

  e.printStackTrace();

  } catch (DecodingFailedException dfe) {

  System.out.println("Error: " + dfe.getMessage());

  dfe.printStackTrace();

  }

  return content;

  }

  public String decoderQRCode(InputStream input) {

  BufferedImage bufImg = null;

  String content = null;

  try {

  bufImg = ImageIO.read(input);

  QRCodeDecoder decoder = new QRCodeDecoder();

  content = new String(decoder.decode(new TwoDimensionCodeImage(bufImg)), "utf-8");

  } catch (IOException e) {

  System.out.println("Error: " + e.getMessage());

  e.printStackTrace();

  } catch (DecodingFailedException dfe) {

  System.out.println("Error: " + dfe.getMessage());

  dfe.printStackTrace();

  }

  return content;

  }

  public static void main(String[] args) {

  String imgPath = "C:/Users/Public/Pictures/Sample Pictures/二維碼.png";

  String encoderContent = "http://www.baidu.com";

  TwoDimensionCode handler = new TwoDimensionCode();

  handler.encoderQRCode(encoderContent, imgPath, "png");//生成圖片

  System.out.println("生成圖片成功");

  String decoderContent = handler.decoderQRCode(imgPath);//解析內容

  System.out.println("解析結果如下:"+decoderContent);

  // try {

  // OutputStream output = new FileOutputStream(path);

  // handler.encoderQRCode(content, output);

  // } catch (Exception e) {

  // e.printStackTrace();

  // }

  }

  }


?足彩 比分计划软件?足彩 比分天天计划?足彩 比分人工计划?足彩 比分在线计划?足彩 比分稳赢计划
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