javaPrint

import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.util.Properties; import java.awt.font.FontRenderContext; import java.awt.print.*; import wf.common.SystemProperties; import javax.print.*; import javax.print.attribute.*; import java.io.*; public class PrintTest11 {public static void main(String[] args) { PrintTest f=new PrintTest(); f.setBounds(70,70,70,89);f.setVisible(true);f.pack(); } } class PrintTest extends JFrame implements ActionListener, Printable { private JButton printTextButton = new JButton("Print Text"); private JButton previewButton = new JButton("Print Preview"); private JButton printText2Button = new JButton("Print Text2"); private JButton printFileButton = new JButton("Print File"); private JButton printFrameButton = new JButton("Print Frame"); private JButton exitButton = new JButton("Exit"); private JLabel tipLabel = new JLabel(""); private JTextArea area = new JTextArea(); private JScrollPane scroll = new JScrollPane(area); private JPanel buttonPanel = new JPanel(); private int PAGES = 0; private String printStr; public PrintTest() { this.setTitle("Print Test"); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setBounds((int)((SystemProperties.SCREEN_WIDTH - 800) / 2), (int)((SystemProperties.SCREEN_HEIGHT - 600) / 2), 800, 600); initLayout(); } private void initLayout() { this.getContentPane().setLayout(new BorderLayout()); this.getContentPane().add(scroll, BorderLayout.CENTER); printTextButton.setMnemonic('P'); printTextButton.addActionListener(this); buttonPanel.add(printTextButton); previewButton.setMnemonic('v'); previewButton.addActionListener(this); buttonPanel.add(previewButton); printText2Button.setMnemonic('e'); printText2Button.addActionListener(this); buttonPanel.add(printText2Button); printFileButton.setMnemonic('i'); printFileButton.addActionListener(this); buttonPanel.add(printFileButton); printFrameButton.setMnemonic('F'); printFrameButton.addActionListener(this); buttonPanel.add(printFrameButton); exitButton.setMnemonic('x'); exitButton.addActionListener(this); buttonPanel.add(exitButton); this.getContentPane().add(buttonPanel, BorderLayout.SOUTH); } public void actionPerformed(ActionEvent evt) { Object src = evt.getSource(); if (src == printTextButton) printTextAction(); else if (src == previewButton) previewAction(); else if (src == printText2Button) printText2Action(); else if (src == printFileButton) printFileAction(); else if (src == printFrameButton) printFrameAction(); else if (src == exitButton) exitApp(); } //1、实现Printable接口 /*Graphic指明打印的图形环境；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）；page指明页号*/ public int print(Graphics g, PageFormat pf, int page) throws PrinterException { Graphics2D g2 = (Graphics2D)g; g2.setPaint(Color.black); //设置打印颜色为黑色 if (page >= PAGES) //当打印页号大于需要打印的总页数时，打印工作结束 return Printable.NO_SUCH_PAGE; g2.translate(pf.getImageableX(), pf.getImageableY());//转换坐标，确定打印边界 drawCurrentPageText(g2, pf, page); //打印当前页文本 return Printable.PAGE_EXISTS; //存在打印页时，继续打印工作 } /*打印指定页号的具体文本内容*/ private void drawCurrentPageText(Graphics2D g2, PageFormat pf, int page) { String s = getDrawText(printStr)[page];//获取当前页的待打印文本内容 //获取默认字体及相应的尺寸 FontRenderContext context = g2.getFontRenderContext(); Font f = area.getFont(); String drawText; float ascent = 16; //给定字符点阵 int k, i = f.getSize(), lines = 0; while(s.length() > 0 && lines < 54) //每页限定在54行以内 { k = s.indexOf('\n'); //获取每一个回车符的位置 if (k != -1) //存在回车符 { lines += 1; //计算行数 drawText = s.substring(0, k); //获取每一行文本 g2.drawString(drawText, 0, ascent); //具体打印每一行文本，同时走纸移位 if (s.substring(k + 1).length() > 0) { s = s.substring(k + 1); //截取尚未打印的文本 ascent += i; } } else //不存在回车符 { lines += 1; //计算行数 drawText = s; //获取每一行文本 g2.drawString(drawText, 0, ascent); //具体打印每一行文本，同时走纸移位 s = ""; //文本已结束 } } } /*将打印目标文本按页存放为字符串数组*/ public String[] getDrawText(String s) { String[] drawText = new String[PAGES];//根据页数初始化数组 for (int i = 0; i < PAGES; i++) drawText[i] = ""; //数组元素初始化为空字符串 int k, suffix = 0, lines = 0; while(s.length() > 0) { if(lines < 54) //不够一页时 { k = s.indexOf('\n'); if (k != -1) //存在回车符 { lines += 1; //行数累加 //计算该页的具体文本内容，存放到相应下标的数组元素 drawText[suffix] = drawText[suffix] + s.substring(0, k + 1); if (s.substring(k + 1).length() > 0) s = s.substring(k + 1); } else { lines += 1; //行数累加 //将文本内容存放到相应的数组元素 drawText[suffix] = drawText[suffix] + s; s = ""; } } else //已满一页时 { lines = 0; //行数统计清零 suffix++; //数组下标加1 } } return drawText; } //2、计算需要打印的总页数 public int getPagesCount(String curStr) { int page = 0; int position, count = 0; String str = curStr; while(str.length() > 0) //文本尚未计算完毕 { position = str.indexOf('\n'); //计算回车符的位置 count += 1; //统计行数 if (position != -1) str = str.substring(position + 1); //截取尚未计算的文本 else str = ""; //文本已计算完毕 } if (count > 0) page = count / 54 + 1; //以总行数除以54获取总页数 return page; //返回需打印的总页数 } //3.1、以jdk1.4以前的版本实现打印动作按钮监听，并完成具体的打印操作 private void printTextAction() { printStr = area.getText().trim(); //获取需要打印的目标文本 if (printStr != null && printStr.length() > 0) //当打印内容不为空时 { PAGES = getPagesCount(printStr); //获取打印总页数 PrinterJob myPrtJob = PrinterJob.getPrinterJob(); //获取默认打印作业 PageFormat pageFormat = myPrtJob.defaultPage(); //获取默认打印页面格式 myPrtJob.setPrintable(this, pageFormat); //设置打印工作 if (myPrtJob.printDialog()) //显示打印对话框 { try { myPrtJob.print(); //进行每一页的具体打印操作 } catch(PrinterException pe) { pe.printStackTrace(); } } } else { //如果打印内容为空时，提示用户打印将取消 JOptionPane.showConfirmDialog (null, "Sorry, Printer Job is Empty, Pri