JAVA调用系统打印机打印字符串

用java实现打印，java.awt中提供了一些打印的API,要实现打印，首先要获得打印对象，然后继承Printable实现接口方法print，以便打印机进行打印，最后用用Graphics2D直接输出直接输出。下面代码实现了简单的打印功能：import java.awt.BasicStroke;import java.awt.Color;import java.awt.Component;import java.awt.Font;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Image;import java.awt.Toolkit;import java.awt.RenderingHints;import java.awt.font.FontRenderContext;import java.awt.font.LineBreakMeasurer;import java.awt.font.TextAttribute;import java.awt.font.TextLayout;import java.awt.geom.Point2D;import java.awt.image.BufferedImage;import java.awt.print.Book;import java.awt.print.PageFormat;import java.awt.print.Paper;import java.awt.print.Printable;import java.awt.print.PrinterException;import java.awt.print.PrinterJob;import java.text.AttributedString;import javax.swing.JApplet;public class PrintTest implements Printable{/*** @param Graphic指明打印的图形环境* @param PageFormat指明打印页格式（页面大小以点为计量单位，1点为1英才的1/72，1英寸为25.4毫米。A4纸大致为595×842点）* @param pageIndex指明页号**/public int print(Graphics gra, PageFormat pf, int pageIndex) throws PrinterException {System.out.println("pageIndex="+pageIndex);Component c = null;//print stringString str = "中华民族是勤劳、勇敢和富有智慧的伟大民族。";//转换成Graphics2DGraphics2D g2 = (Graphics2D) gra;//设置打印颜色为黑色g2.setColor(Color.black);//打印起点坐标double x = pf.getImageableX();double y = pf.getImageableY();switch(pageIndex){case 0://设置打印字体（字体名称、样式和点大小）（字体名称可以是物理或者逻辑名称）//Java平台所定义的五种字体系列：Serif、SansSerif、Monospaced、Dialog 和 DialogInputFont font = new Font("新宋体", Font.PLAIN, 9);g2.setFont(font);//设置字体//BasicStroke bs_3=new BasicStroke(0.5f);float[] dash1 = {2.0f};//设置打印线的属性。//1.线宽 2、3、不知道，4、空白的宽度，5、虚线的宽度，6、偏移量g2.setStroke(new BasicStroke(0.5f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 2.0f, dash1, 0.0f));//g2.setStroke(bs_3);//设置线宽float heigth = font.getSize2D();//字体高度System.out.println("x="+x);// -1- 用Graphics2D直接输出//首字符的基线(右下部)位于用户空间中的 (x, y) 位置处//g2.drawLine(10,10,200,300);Image src = Toolkit.getDefaultToolkit().getImage("D:\\EclipseWorkSpace3.1\\Kfc-wuxi\\WebRoot\\image\\KFC.jpg");g2.drawImage(src,(int)x,(int)y,c);int img_Height=src.getHeight(c);int img_width=src.getWidth(c);//System.out.println("img_Height="+img_Height+"img_width="+img_width) ;g2.drawString(str, (float)x, (float)y+1*heigth+img_Height);g2.drawLine((int)x,(int)(y+1*heigth+img_Height+10),(int)x+200,(int)(y+1*heigth+img_Height+10));g2.drawImage(src,(int)x,(int)(y+1*heigth+img_Height+11),c);return PAGE_EXISTS;default:return NO_SUCH_PAGE;}}public static void main(String[] args) {// 通俗理解就是书、文档Book book = new Book();// 设置成竖打PageFormat pf = new PageFormat();pf.setOrientation(PageFormat.PORTRAIT);// 通过Paper设置页面的空白边距和可打印区域。必须与实际打印纸张大小相符。Paper p = new Paper();p.setSize(590,840);//纸张大小p.setImageableArea(10,10, 590,840);//A4(595 X 842)设置打印区域，其实0，0应该是72，72，因为A4纸的默认X,Y边距是72pf.setPaper(p);// 把 PageFormat 和 Printable 添加到书中，组成一个页面book.append(new PrintTest(), pf);//获取打印服务对象PrinterJob job = PrinterJob.getPrinterJob();// 设置打印类job.setPageable(book);try {//可以用printDialog显示打印对话框，在用户确认后打印；也可以直接打印//boolean a=job.printDialog();//if(a)//{job.print();//}} catch (PrinterException e) {e.printStackTrace();}}}这个例子实现了打印字符串，线（包括虚线）和打印图片。而且通过Paper的setImageableArea可以设置打印的区域和边距，让开发者随意的设置打印的位置。下面的打印代码没有设置打印区域，默认为打印纸张的区域和边距，比如我们一般用的A4纸，打印的起点X和Y坐标则是72，72。无区域设置的代码：

import java.awt.BasicStroke;import java.awt.Color;import java.awt.Component;import java.awt.Font;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Image;import java.awt.Toolkit;import java.awt.RenderingHints;import java.awt.font.FontRenderContext;import java.awt.font.LineBreakMeasurer;import java.awt.font.TextAttribute;import java.awt.font.TextLayout;import java.awt.geom.Point2D;import java.awt.image.BufferedImage;import java.awt.print.Book;import java.awt.print.PageFormat;import java.awt.print.Paper;import java.awt.print.Printable;import java.awt.print.PrinterException;import java.awt.print.PrinterJob;import java.text.AttributedString;import javax.swing.JApplet;public class PrintTest1   implements Printable{/*** @param Graphic指明打印的图形环境* @param PageFormat指明打印页格式（页面大小以点为计量单位，1点为1英才的1/72，1英寸为25.4毫米。A4纸大致为595×842点）* @param pageIndex指明页号**/public int print(Graphics gra, PageFormat pf, int pageIndex) throws PrinterException {System.out.println("pageIndex="+pageIndex);Component c = null;//print stringString str = "中华民族是勤劳、勇敢和富有智慧的伟大民族。";//转换成Graphics2DGraphics2D g2 = (Graphics2D) gra;//设置打印颜色为黑色g2.setColor(Color.black);/*Paper paper = pf.getPaper();//得到页面格式的纸张paper.setSize(500,500);//纸张大小paper.setImageableArea(0,0,500,500); //设置打印区域的大小System.out.println(paper.getWidth());System.out.println(paper.getHeight());pf.setPaper(paper);//将该纸张作为格式 *///打印起点坐标double x = pf.getImageableX();double y = pf.getImageableY();switch(pageIndex){case 0://设置打印字体（字体名称、样式和点大小）（字体名称可以是物理或者逻辑名称）//Java平台所定义的五种字体系列：Serif、SansSerif、Monospaced、Dialog 和 DialogInputFont font = new Font("新宋体", Font.PLAIN, 9);g2.setFont(font);//设置字体//BasicStroke   bs_3=new   BasicStroke(0.5f);float[]   dash1   =   {4.0f};g2.setStroke(new   BasicStroke(0.5f,   BasicStroke.CAP_BUTT,   BasicStroke.JOIN_MITER,   4.0f,   dash1,   0.0f));float heigth = font.getSize2D();//字体高度System.out.println("x="+x);//使用抗锯齿模式完成文本呈现/*g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,RenderingHints.VALUE_TEXT_ANTIALIAS_ON);*/// -1- 用Graphics2D直接输出//首字符的基线(右下部)位于用户空间中的 (x, y) 位置处//g2.drawLine(10,10,200,10);Image src = Toolkit.getDefaultToolkit().getImage("d://logo.gif");g2.drawImage(src,(int)x,(int)y,c);int img_Height=src.getHeight(c);int img_width=src.getWidth(c);//System.out.println("img_Height="+img_Height+"img_width="+img_width) ;g2.drawString(str, (float)x, (float)y+1*heigth+img_Height);g2.drawLine((int)x,(int)(y+1*heigth+img_Height+10),(int)x+200,(int)(y+1*heigth+img_Height+10));g2.drawImage(src,(int)x,(int)(y+1*heigth+img_Height+11),c);// -2- 直接构造TextLayout打印/*FontRenderContext frc = g2.getFontRenderContext();TextLayout layout = new TextLayout(str, font, frc);layout.draw(g2, (float)x, (float)y+2*heigth);*/// -3- 用LineBreakMeasurer进行打印/*AttributedString text = new AttributedString(str);text.addAttribute(TextAttribute.FONT, font);LineBreakMeasurer lineBreaker = new LineBreakMeasurer(text.getIterator(), frc);//每行字符显示长度(点)double width = pf.getImageableWidth();//首字符的基线位于用户空间中的 (x, y) 位置处Point2D.Double pen = new Point2D.Double (100, y+3*heigth);while ( (layout = lineBreaker.nextLayout( (float) width)) != null){layout.draw(g2, (float)x, (float) pen.y);pen.y += layout.getAscent();}*/return PAGE_EXISTS;default:return NO_SUCH_PAGE;}}public static void main(String[] args) {//获取打印服务对象PrinterJob job = PrinterJob.getPrinterJob();PageFormat pageFormat = job.defaultPage();//得到默认页格式job.setPrintable(new PrintTest1());//设置打印类try {//可以用printDialog显示打印对话框，在用户确认后打印；也可以直接打印//boolean a=job.printDialog();//if(a)//{job.print();//}} catch (PrinterException e) {e.printStackTrace();}}}