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发表于 2020-5-20 15:30:01
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显示全部楼层
import javax.swing.*;
import javax.swing.table.*;
import java.awt.print.*;
import java.util.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.Dimension;
public class Report implements Printable{
JFrame frame;
JTable tableView;
public Report() {
frame = new JFrame("Sales Report");
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);}});
final String[] headers = {"Description", "open price",
"latest price", "End Date", "Quantity"};
final Object[][] data = {
{"Box of Biros", "1.00", "4.99", new Date(),
new Integer(2)},
{"Blue Biro", "0.10", "0.14", new Date(),
new Integer(1)},
{"legal pad", "1.00", "2.49", new Date(),
new Integer(1)},
{"tape", "1.00", "1.49", new Date(),
new Integer(1)},
{"stapler", "4.00", "4.49", new Date(),
new Integer(1)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"stapler", "4.00", "4.49", new Date(),
new Integer(1)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"stapler", "4.00", "4.49", new Date(),
new Integer(1)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)},
{"legal pad", "1.00", "2.29", new Date(),
new Integer(5)}
};
TableModel dataModel = new AbstractTableModel() {
public int getColumnCount() {
return headers.length; }
public int getRowCount() { return data.length;}
public Object getValueAt(int row, int col) {
return data[row][col];}
public String getColumnName(int column) {
return headers[column];}
public Class getColumnClass(int col) {
return getValueAt(0,col).getClass();}
public boolean isCellEditable(int row, int col) {
return (col==1);}
public void setValueAt(Object aValue, int row,
int column) {
data[row][column] = aValue;
}
};
tableView = new JTable(dataModel);
JScrollPane scrollpane = new JScrollPane(tableView);
scrollpane.setPreferredSize(new Dimension(500, 80));
frame.getContentPane().setLayout(
new BorderLayout());
frame.getContentPane().add(
BorderLayout.CENTER,scrollpane);
frame.setSize(400,200);
JButton printButton= new JButton();
printButton.setText("Print !");
frame.getContentPane().add(
BorderLayout.SOUTH,printButton);
printButton.addActionListener( new ActionListener(){
public void actionPerformed(ActionEvent evt) {
PrinterJob pj=PrinterJob.getPrinterJob();
pj.setPrintable(Report.this);
//使用本地对话框
pj.printDialog();
try{
pj.print();
}catch (Exception PrintException) {}
}
});
frame.setVisible(true);
}
public int print(Graphics g, PageFormat pageFormat,
int pageIndex) throws PrinterException {
Graphics2D g2 = (Graphics2D) g;
g2.setColor(Color.black);
//对字体进行设置
int fontHeight=g2.getFontMetrics().getHeight();
int fontDesent=g2.getFontMetrics().getDescent();
//leave room for page number
double pageHeight =
pageFormat.getImageableHeight()-fontHeight;
double pageWidth =
pageFormat.getImageableWidth();
double tableWidth = (double)
tableView.getColumnModel(
).getTotalColumnWidth();
double scale = 1;
if (tableWidth >= pageWidth) {
scale = pageWidth / tableWidth;
}
double headerHeightOnPage=
tableView.getTableHeader(
).getHeight()*scale;
double tableWidthOnPage=tableWidth*scale;
double oneRowHeight=(tableView.getRowHeight()+
tableView.getRowMargin())*scale;
int numRowsOnAPage=
(int)((pageHeight-headerHeightOnPage)/
oneRowHeight);
double pageHeightForTable=oneRowHeight*
numRowsOnAPage;
int totalNumPages=
(int)Math.ceil((
(double)tableView.getRowCount())/
numRowsOnAPage);
if(pageIndex>=totalNumPages) {
return NO_SUCH_PAGE;
}
g2.translate(pageFormat.getImageableX()+10,
pageFormat.getImageableY()-10);
//记录打印张数
g2.drawString("Page: "+(pageIndex+1)+" Copyright Asat",
(int)pageWidth/2-35, (int)(pageHeight
+fontHeight-fontDesent));
g2.translate(0f,headerHeightOnPage);
g2.translate(0f,-pageIndex*pageHeightForTable);
//如果JTABLE比纸张大，对JTABLE进行缩小打印
if (pageIndex + 1 == totalNumPages) {
int lastRowPrinted =
numRowsOnAPage * pageIndex;
int numRowsLeft =
tableView.getRowCount()
- lastRowPrinted;
g2.setClip(0,
(int)(pageHeightForTable * pageIndex),
(int) Math.ceil(tableWidthOnPage),
(int) Math.ceil(oneRowHeight *
numRowsLeft));
}
//else clip to the entire area available.
else{
g2.setClip(0,
(int)(pageHeightForTable*pageIndex),
(int) Math.ceil(tableWidthOnPage),
(int) Math.ceil(pageHeightForTable));
}
g2.scale(scale,scale);
//缩放操作
tableView.paint(g2);
//打印JTABLE的体
g2.scale(1/scale,1/scale);
g2.translate(0f,pageIndex*pageHeightForTable);
g2.translate(0f, -headerHeightOnPage);
g2.setClip(0, 0,
(int) Math.ceil(tableWidthOnPage),
(int)Math.ceil(headerHeightOnPage));
g2.scale(scale,scale);
tableView.getTableHeader().paint(g2);
//打印JTABLE的头
return Printable.PAGE_EXISTS;
//PrinterJob以Printable.PAGE_EXISTS来判断是否还需打印
}
public static void main(String[] args) {
new Report();
}
}
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