使用python调用zxing库生成二维码图片详解

$ sudo apt-get install python-jpype

$ wget http://repo1.maven.org/maven2/com/google/zxing/javase/2.2/javase-2.2.jar
$ wget http://repo1.maven.org/maven2/com/google/zxing/core/2.2/core-2.2.jar

#!/usr/bin/python 
#-*- encoding: utf-8 -*- 
 
from jpype import * 
 
# 启动JVM 
startJVM(getDefaultJVMPath(), "-ea", ("-Djava.class.path=%s" % "./javase-2.2.jar:./core-2.2.jar")) 
 
# 加载需要使用到的类型 
MultiFormatWriter = JClass("com.google.zxing.MultiFormatWriter") 
BarcodeFormat = JClass("com.google.zxing.BarcodeFormat") 
BitMatrix = JClass("com.google.zxing.common.BitMatrix") 
File = JClass("java.io.File") 
BufferedImage = JClass("java.awt.image.BufferedImage") 
ImageIO = JClass("javax.imageio.ImageIO") 
ByteArrayOutputStream = JClass("java.io.ByteArrayOutputStream") 
MatrixToImageWriter = JClass("com.google.zxing.client.j2se.MatrixToImageWriter") 
EncodeHintType = JClass("com.google.zxing.EncodeHintType") 
Hashtable = JClass("java.util.Hashtable") 
 
StrToEncode = "This is a testing string" 
# 设置Margin=0 
hints = Hashtable() 
hints.put(EncodeHintType.MARGIN, 0) 
 
matrix = MultiFormatWriter().encode(StrToEncode, BarcodeFormat.QR_CODE, 260, 260, hints) 
image = MatrixToImageWriter.toBufferedImage(matrix) 
ImageIO.write(image, "png", File("test.png")) 
 
# 关闭JVM 
shutdownJVM()