Java绘制图片并实现打印前生成图片文件进行预览

Java绘制图片并实现打印前生成图片文件进行预览, 适用于开发阶段. 如果要使用界面完成预览,请另找资源.

 

这里用这个功能主要是用于结果预览,因为如果使用打印来进行结果验证,会浪费大量的纸张.

 

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

import javax.imageio.ImageIO;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
import com.synnex.reception.util.PLBarCode39;
import com.synnex.reception.vo.VisitInfoVo;

public class PrintTest {

	public static void main(String[] args) {
		String barCode = "201408210001" ;
		String dateStr = "2014/08/25 23:59:59";
		String name = "Christopher Adam Hernandez Sotelo";
		String visitorCompany = "CHINA Chengdu";
		String employeeName = "Marquisha Ardell Eddington-Williams";
		
		int zoom = 6;
		BufferedImage resultImage = null;
		BufferedImage bufferedImage = new BufferedImage(216*zoom,144*zoom,BufferedImage.TYPE_INT_RGB);
		Graphics g = bufferedImage.getGraphics();
//        g.draw3DRect(0, 0, 216, 144, true);
		g.setColor(Color.WHITE);
		g.fillRect(0, 0, 216*zoom, 144*zoom);
		g.setColor(Color.BLACK);
		
        Image image;
        try {
            image = ImageIO.read(PrintTest.class.getClassLoader().getResource("logo.bmp").openStream());
            if (image != null) {
                g.drawImage(image, 6*zoom, 6*zoom, 60*zoom, 24*zoom, null);
            }
            g.setFont(new Font("Arial", Font.BOLD, 14*zoom));
            g.drawString("VISITOR",100*zoom, 24*zoom);
            
            g.setFont(new Font("Arial", Font.BOLD, 10*zoom));
            g.drawString("Name:",61*zoom, 42*zoom);
            g.drawString("Entry Time:", 37*zoom,63*zoom);
            g.drawString("Company Name:", 12*zoom,80*zoom);
            g.drawString("Employee Name:", 10*zoom,97*zoom);
            
            g.setFont(new Font("Arial", Font.PLAIN, 8*zoom));
            
            g.drawString(name,92*zoom, 42*zoom);
            g.drawString(dateStr, 92*zoom,63*zoom);
            g.drawString(visitorCompany, 92*zoom,80*zoom);
            g.drawString(employeeName, 92*zoom,97*zoom);
            
            g.drawImage(generateBarcodeImage(barCode), 40*zoom, 112*zoom, 152*zoom, 30*zoom, null);
            g.dispose();
            
            resultImage = bufferedImage;//rotate(bufferedImage, 360);
			// encode: com.sun.image.codec.jpeg
			BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File("C:\\test.jpg")));
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(resultImage);
			param.setQuality(1.0f, false);
			encoder.setJPEGEncodeParam(param);
			try {
				encoder.encode(resultImage);
			}catch(IOException ioe) {
				ioe.printStackTrace();
			}

		}catch(Exception e){
			e.printStackTrace();
		}
		
		//
//		print(resultImage);
	}

上面代码主要是先绘制自己要产生的图片, 然后将图片输出到文件, 手动打开文件即可查看结果. 其中如下代码为导出图片到磁盘:

// encode: com.sun.image.codec.jpeg
			BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File("C:\\test.jpg")));
			JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
			JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(resultImage);
			param.setQuality(1.0f, false);
			encoder.setJPEGEncodeParam(param);
			try {
				encoder.encode(resultImage);
			}catch(IOException ioe) {
				ioe.printStackTrace();
			}