我有一个有关在条形码上打印附加信息的问题。我正在使用http://barbecue.sourceforge.net/创建我的条形码。
当我创建完成条形码后,我想添加一些额外的信息。目前我是用以下方法实现的!例如:
Graphics2D g2d5 = container4Barcode.createGraphics();
g2d5.setBackground(Color.WHITE);
g2d5.clearRect(0, 33, 200, 200);
g2d5.setColor(Color.BLACK);
g2d5.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d5.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_GASP);
g2d5.setFont(new Font("Arial", Font.PLAIN, 8));
g2d5.drawString(barcode, 8, 40);
g2d5.drawString(generateRandomNumber(ekPreis), 57, 40);
String datumResult = datum;
g2d5.drawString(location, 98, 40);
g2d5.drawString(datum.substring(2), 114, 40);
g2d5.dispose();
以下是pdf输出的内容: 如您所见,我的文本质量(条形码上下方)真的很糟糕...如何提高文本质量,使其更加平滑而不是那么像素化?!(当我打印条形码时,条形码看起来非常像素化...)有什么技巧吗?
更新:因此,我在这里添加了我最新成果的图片...当我打印这些条形码时,它们看起来很可怕!以下是我所做的代码:
Graphics2D g2d6 = container4Barcode.createGraphics();
g2d6.setColor(Color.black);
g2d6.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d6.setFont(new Font("Verdana", Font.BOLD, 7));
g2d6.drawString("FLORETT", 9, 20);
g2d6.drawString("50-521-60", 57, 20);
Graphics2D g2d4 = container4Barcode.createGraphics();
g2d4.setColor(Color.black);
g2d4.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d4.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_ON);
g2d4.setFont(new Font("Verdana", Font.BOLD, 11));
g2d4.drawString("SSYYS", 105, 19);
g2d4.dispose();
使用这个代码,我得到了最好的结果!当然,我还尝试了"度量、AA_GASP、LCS_HRGB、不同的字体(在我看来Verdana是最好的)..."等等许多方法,但有些我无法使用,因为那样会使我的条形码模糊不清!所以实际上,我正在强制解决一个问题,即无法提高我的文字-从graphics2d绘制字符串的质量!
所以,我想问一下,有没有可能让“SSYYS”(字体大小11)和“FLORETT”(字体大小7)看起来更好!在JAVA中,有没有可能在图像上绘制“平滑”的文本,字体大小小于“12”?有什么变通的办法吗?正如您在图片中所看到的,“S和Y”的字母看起来非常糟糕...
第二次更新:
以下是一些示例代码...请确保存在以下文件夹:C:\TestBarcodes\
我希望我已经将我的代码减少到最低限度,这样您就可以想象出我的问题所在...
package generator;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.io.FileOutputStream;
import java.io.IOException;
import net.sourceforge.barbecue.Barcode;
import net.sourceforge.barbecue.BarcodeException;
import net.sourceforge.barbecue.BarcodeFactory;
import net.sourceforge.barbecue.output.OutputException;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.edit.PDPageContentStream;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDJpeg;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;
public class BarcodeGen {
// sets the picWidth
private static int picWidth = 149;
// sets the picHeigth
private static int picHeigth = 60;
public static void main(String[] args)
throws BarcodeException, OutputException, COSVisitorException, IOException {
generateBarcode("11138500");
}
public static void generateBarcode(String barcode)
throws IOException, COSVisitorException, BarcodeException, OutputException {
Barcode barcode2 = BarcodeFactory.createCode39(barcode, false);
int gw = barcode2.getWidth();
// change this to suit if you want higher, default 50
// barcode2.setBarWidth(50);
// this sets DPI
barcode2.setResolution(100);
// barcode2.setFont(font);
int gh = barcode2.getHeight();
// change this if you want a coloured background
// image = new BufferedImage(t, s, BufferedImage.TYPE_INT_RGB)
BufferedImage image = new BufferedImage(gw, gh, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = (Graphics2D) image.getGraphics();
// default is black so draw a white box first
// change type to INT_RGB if you want a coloured background
g2.setColor(Color.white);
g2.fillRect(0, 0, gw, gh);
barcode2.draw(g2, 0, 0);
// CREATE ADDITIONAL INFORMATION ON BARCODE
BufferedImage container4Barcode = new BufferedImage(
picWidth, picHeigth, image.getType());
Graphics2D g2d = container4Barcode.createGraphics();
g2d.setBackground(Color.WHITE);
g2d.clearRect(0, 0, picWidth, picHeigth);
g2d.setColor(Color.black);
g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB);
g2d.drawImage(image, 8, 21, 130, 18, null);
g2d.dispose();
Graphics2D g2d6 = container4Barcode.createGraphics();
g2d6.setColor(Color.black);
g2d6.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d6.setFont(new Font("Verdana", Font.BOLD, 7));
g2d6.drawString("FLORETT", 9, 20);
g2d6.drawString("50-521-60", 57, 20);
Graphics2D g2d4 = container4Barcode.createGraphics();
g2d4.setColor(Color.black);
g2d4.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
g2d4.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
RenderingHints.VALUE_FRACTIONALMETRICS_ON);
g2d4.setFont(new Font("Verdana", Font.BOLD, 11));
g2d4.drawString("SSYYS", 105, 19);
g2d4.dispose();
// PRINT PDF
int ver = 782;
PDDocument doc = new PDDocument();
PDPage page = new PDPage(PDPage.PAGE_SIZE_A4);
doc.addPage(page);
PDXObjectImage image2 = new PDJpeg(doc, container4Barcode);
PDPageContentStream content = new PDPageContentStream(doc, page);
content.drawImage(image2, 5, ver);
content.close();
doc.save(new FileOutputStream("C:\\TestBarcodes\\barcode.pdf"));
// opens the pdf file
Process p = Runtime
.getRuntime()
.exec("rundll32 url.dll,FileProtocolHandler C:\\TestBarcodes\\barcode.pdf");
try {
p.waitFor();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
pdfbox
与书写清晰文本有什么关系?如果在普通图像上绘制时文本清晰明了,那么问题就出在pdfbox
上,我不提供相关支持。如果不是这种情况,那么可以认为pdfbox
与问题无关,应该将其删除。删除与pdfbox
相关的代码的一个巨大优势是,人们将能够使用 J2SE 编译和运行代码,而无需第三方插件。我花了比平常更多的时间来解释如何发布代码,现在我已经非常接近放弃这个线程了。最后一次尝试。 - Andrew Thompson