java 条形码 源码

[aries_nj]

各位高手能提供一个java生成条形码的实例给我，谢谢

[Fairy_dy]

package test;

import java.awt.image.BufferedImage;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.sun.image.codec.jpeg.JPEGCodec;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;

import com.sun.image.codec.jpeg.ImageFormatException;
import java.io.IOException;
import java.util.Random;

/** *//**
* 符合BarCode 39规范的条码图像生成器
* @author ChenLiang & LiGuang
*/
public class BarCodeImage
{
private static final int rate = 3; //条码宽条与窄条宽度之比

private int m_nNarrowWidth; //窄条的宽度像素数
private int m_nImageHeight; //条码的高度像素数
private boolean m_bRotato; //输出的图像是否需要先旋转

/** *//**
* 根据strCodes传入的字符串，生成符合BarCode 39规范的JPEG输出流；
* @param nNarrowWidth
* @param nImageHeight
*/
/* public BarCode39ImageBuilder(int nNarrowWidth, int nImageHeight)
{
m_nNarrowWidth = nNarrowWidth;
m_nImageHeight = nImageHeight;
m_bRotato = false;
}

*//** *//**
* 构造函数，默认窄条宽为4像素，条码高度是100像素；
*//*
public BarCode39ImageBuilder()
{
this(1, 33);
}*/

/** *//**
* 设置是否需要将结果图像在输出之前进行旋转；系统默认是不旋转
* @param b true:旋转，false:不旋转
*/
public void setRotato(boolean b)
{
m_bRotato = b;
}

/** *//**
* 生成相应的Bar Code图像，格式以jpeg格式的输出流；
* @param strCodes 要生成条码的字符串，注意该字符串需要包含首尾的两个星号
* @param out 接结果的输出流
* @throws IOException
* @throws ImageFormatException
* @throws IOException
*/
public void getImage(String strCodes, String path) throws ImageFormatException, IOException
{
String fileBar= System.getProperty("file.separator");
File myPNG = new File(path);
OutputStream out = new FileOutputStream(myPNG);
if (null==strCodes || null==out || 0==strCodes.length())
return;

int nImageWidth = (strCodes.length() * (3 * rate + 7) * m_nNarrowWidth);

BufferedImage bi = new BufferedImage(nImageWidth, m_nImageHeight+13, BufferedImage.TYPE_INT_RGB);
Graphics g = bi.getGraphics();

g.setColor(Color.WHITE);
g.fillRect(0, 0, nImageWidth, m_nImageHeight);

g.setColor(Color.BLACK);
int startx = 0;
for (int i = 0; i < strCodes.length(); i++)
startx = drawOneChar(g, startx, strCodes.charAt(i));

g.setColor(Color.WHITE);
g.fillRect(0, 33, nImageWidth, 13);

g.setColor(Color.BLACK);
g.drawString(strCodes, nImageWidth/4, 45);

if (m_bRotato) //旋转
bi = flipX2Y(bi);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(bi);

while(true) //图片生成完毕后，向下运行
{
if(myPNG.exists())
{
//System.out.println("---------over");
break;
}
}
}

/** *//**
* 辅助方法，绘制一个字符
* @param g 画布
* @param x 起始位置
* @param ch 要绘制的字符
* @return 下一个要绘制字符的位置
*/
private int drawOneChar(Graphics g, int x, char ch)
{
short sCode = getCharCode(ch);
for (int i = 0; i < 9; i++)
{
int width = m_nNarrowWidth;

if (((0x100 >>> i) & sCode) != 0)
width *= rate;

if ((i & 0x1) == 0)
g.fillRect(x, 0, width, m_nImageHeight);

x += width;
}
return x + m_nNarrowWidth;
}

/** *//**
* 图像翻转，即X与Y方向互换
* @param in 源图像
* @return 翻转后的图像
*/
private BufferedImage flipX2Y(BufferedImage in)
{
BufferedImage out = new BufferedImage(in.getHeight(), in.getWidth(), in.getType());
//请查看JDK
AffineTransform affineTransform = new AffineTransform(0, 1, 1, 0, 0, 0);
AffineTransformOp affineTransformOp = new AffineTransformOp(affineTransform,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
return affineTransformOp.filter(in, out);
}

// 原来旋转的版本，仅供参考
// private BufferedImage rotate(BufferedImage in)
// {
// int width = in.getWidth();
// int height = in.getHeight();
// BufferedImage out = new BufferedImage(height, width, in.getType());
//
// AffineTransform affineTransform = AffineTransform.getRotateInstance(Math.toRadians(90));
// affineTransform.translate(0, -height);
//
// AffineTransformOp affineTransformOp = new AffineTransformOp(affineTransform,
// AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
// affineTransformOp.filter(in, out);
// return out;
// }

//Code39符号表
private static final char[] m_chars = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
'Y', 'Z', '-', '.', ' ', '*', '$', '/', '+', '%' };
//Code39符号所对应的码表，16进制编码 n为0 w为1
private static final short[] m_codes = { 0x34, 0x121, 0x61, 0x160, 0x31, 0x130, 0x70, 0x25, 0x124, 0x64,
0x109, 0x49, 0x148, 0x19, 0x118, 0x58, 0xd, 0x10c, 0x4c, 0x1c, 0x103, 0x43, 0x142, 0x13, 0x112, 0x52,
0x7, 0x106, 0x46, 0x16, 0x181, 0xc1, 0x1c0, 0x91, 0x190, 0xd0, 0x85, 0x184, 0xc4, 0x94, 0xa8, 0xa2,
0x8a, 0x2a };
/** *//**
* 通过码表符号获得码表字符
* @param ch 码表符号
* @return 码表值
*/
private static short getCharCode(char ch)
{
for (int i = 0; i < m_chars.length; i++)
{
if (ch == m_chars[i])
return m_codes[i];
}
return 0;
}

//生成条形码的数据----8位随机字符串
public String barcodeData()
{
String dataFinal = null;
//String dataTemp = longDateFormat.format(new java.util.Date());
Random r = new Random();
String strRandom = ""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+"";
dataFinal = strRandom;
//dataFinal = dataTemp+strRandom;
/*
while(hasCus(dataFinal)) //判断是否有此客户代码
{
strRandom=""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+""+r.nextInt(9)+"";
dataFinal = dataTemp+strRandom;
}
*/
return dataFinal;
}

}

[tfish2014]

[Quote=引用 1 楼 fairy_dy 的回复:]
package test;

import java.awt.image.BufferedImage;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import com.su……
[/Quote]
好用

[jypapgl]

got it!!!!!

[whlcy]

up!!!!!

[java小牛1]

支持一下

[a312983516]

谁能说明一下 2楼那类怎么调用 调用哪个方法

[hepeng_8]

我也学习一下

[zhangyongjun6244]

这可难了，图书馆有
好像是spring
这本书

[julian]

up!!!!!

[ww_stone]

下载开源barcode

[heroshen1988]

[Quote=引用 1 楼 fairy_dy 的回复:]
package test;

import java.awt.image.BufferedImage;
import java.awt.Graphics;
import java.awt.Color;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import com.su……
[/Quote]
学习了

[hehanjm]

二楼的是怎么run起来的？
教教我呗！

[gaokong7268182]

气愤，、、、、、

[zclove]

第一个方法，参数说详细一点啊

[xjlgy]

barcode4j

[gao2265752]

怎么运行

[duanjudy]

我也想恩怎么运行？