java生成二维码
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package net.test;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
public class Test {
public static void main(String[] args) throws Exception {
String imgPath = "D:/qrCode.png";
File file=new File(imgPath);
System.out.println(file.getName());
String content = "http://www.baidu.com";
Test test=new Test();
test.encoderQRCode(content, imgPath);
System.out.println("encoder QRcode success");
}
public static InputStream getStringStream(String sInputString) {
if (sInputString != null && !sInputString.trim().equals("")) {
try {
ByteArrayInputStream tInputStringStream = new ByteArrayInputStream(
sInputString.getBytes());
return tInputStringStream;
} catch (Exception ex) {
ex.printStackTrace();
}
}
return null;
}
public static String getStreamString(InputStream tInputStream) {
if (tInputStream != null) {
try {
BufferedReader tBufferedReader = new BufferedReader(
new InputStreamReader(tInputStream));
StringBuffer tStringBuffer = new StringBuffer();
String sTempOneLine = new String("");
while ((sTempOneLine = tBufferedReader.readLine()) != null) {
tStringBuffer.append(sTempOneLine);
}
return tStringBuffer.toString();
} catch (Exception ex) {
ex.printStackTrace();
}
}
return null;
}
/****
* 生成二维码(QRCode)图片
*
* */
public void encoderQRCode(String content, String imgPath) {
try {
Qrcode qrcodeHandler = new Qrcode();
qrcodeHandler.setQrcodeErrorCorrect('M');
qrcodeHandler.setQrcodeEncodeMode('B');
qrcodeHandler.setQrcodeVersion(7);
System.out.println(content);
byte[] contentBytes = content.getBytes("gb2312");
BufferedImage bufImg = new BufferedImage(140, 140,
BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, 140, 140);
// 设定图像颜色> BLACK
gs.setColor(Color.BLACK);
// 设置偏移量 不设置可能导致解析出错
int pixoff = 2;
// 输出内容> 二维码
if (contentBytes.length > 0 && contentBytes.length < 120) {
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 {
System.err.println("QRCode content bytes length = "
+ contentBytes.length + " not in [ 0,120 ]. ");
}
gs.dispose();
bufImg.flush();
File imgFile = new File(imgPath);
// 生成二维码QRCode图片
ImageIO.write(bufImg, "png", imgFile);
} catch (Exception e) {
e.printStackTrace();
}
}
}
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
public class Test {
public static void main(String[] args) throws Exception {
String imgPath = "D:/qrCode.png";
File file=new File(imgPath);
System.out.println(file.getName());
String content = "http://www.baidu.com";
Test test=new Test();
test.encoderQRCode(content, imgPath);
System.out.println("encoder QRcode success");
}
public static InputStream getStringStream(String sInputString) {
if (sInputString != null && !sInputString.trim().equals("")) {
try {
ByteArrayInputStream tInputStringStream = new ByteArrayInputStream(
sInputString.getBytes());
return tInputStringStream;
} catch (Exception ex) {
ex.printStackTrace();
}
}
return null;
}
public static String getStreamString(InputStream tInputStream) {
if (tInputStream != null) {
try {
BufferedReader tBufferedReader = new BufferedReader(
new InputStreamReader(tInputStream));
StringBuffer tStringBuffer = new StringBuffer();
String sTempOneLine = new String("");
while ((sTempOneLine = tBufferedReader.readLine()) != null) {
tStringBuffer.append(sTempOneLine);
}
return tStringBuffer.toString();
} catch (Exception ex) {
ex.printStackTrace();
}
}
return null;
}
/****
* 生成二维码(QRCode)图片
*
* */
public void encoderQRCode(String content, String imgPath) {
try {
Qrcode qrcodeHandler = new Qrcode();
qrcodeHandler.setQrcodeErrorCorrect('M');
qrcodeHandler.setQrcodeEncodeMode('B');
qrcodeHandler.setQrcodeVersion(7);
System.out.println(content);
byte[] contentBytes = content.getBytes("gb2312");
BufferedImage bufImg = new BufferedImage(140, 140,
BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, 140, 140);
// 设定图像颜色> BLACK
gs.setColor(Color.BLACK);
// 设置偏移量 不设置可能导致解析出错
int pixoff = 2;
// 输出内容> 二维码
if (contentBytes.length > 0 && contentBytes.length < 120) {
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 {
System.err.println("QRCode content bytes length = "
+ contentBytes.length + " not in [ 0,120 ]. ");
}
gs.dispose();
bufImg.flush();
File imgFile = new File(imgPath);
// 生成二维码QRCode图片
ImageIO.write(bufImg, "png", imgFile);
} catch (Exception e) {
e.printStackTrace();
}
}
}
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