[code]
import java.awt.*
import java.awt.event.*
import java.awt.print.*
import java.awt.image.*
import javax.swing.*
import javax.swing.event.*
import javax.swing.border.*
import javax.swing.event.*
import java.util.*
import java.io.*
public class Print implements Printable{
int m_wPage
int m_hPage
int m_orientation
Printable m_target
int maxNumPage=1
String title="数据表格打印"
Font titleFont=new Font("黑体",Font.BOLD,14)
boolean hasTail=true
int tailAlign=0
int headAlign=0
int topSpace=0
int leftSpace=0
int yStart=0
int yEnd=0
int xStart=topSpace
int xEnd=0
int x=0,y=0
String strTemp="打印内容"
public void doPrint(){
try{
m_orientation=PageFormat.PORTRAIT
//设置打印对象,默认纸张
PrinterJob prnJob=PrinterJob.getPrinterJob()
PageFormat pageFormat=prnJob.defaultPage()
pageFormat.setOrientation(m_orientation)
m_wPage=(int)(pageFormat.getWidth())
m_hPage=(int)(pageFormat.getHeight())
//将待打印的窗体根据默认纸张设置传入打印对象
prnJob.setPrintable(this,pageFormat)
if(!prnJob.printDialog()) return
prnJob.print()
}catch(PrinterException ex){
ex.printStackTrace()
System.err.println("打印错误:"+ex.toString())
}
}
/**
* 初始化打印参数
*/
public void initPrintParameter()
{
}
/**
*构造打印内容,以送打印机打印
*/
public int print(Graphics pg,PageFormat pageFormat,
int pageIndex) throws PrinterException{
//初始化打印参数
initPrintParameter()
//将画布设置为页面大小
pg.translate((int)pageFormat.getImageableX(),
(int)pageFormat.getImageableY())
int wPage=0
int hPage=0
//根据打印机页面设置调整画布大小
if(pageFormat.getOrientation()==pageFormat.PORTRAIT){
wPage=(int)pageFormat.getImageableWidth()
hPage=(int)pageFormat.getImageableHeight()
}
else{
wPage=(int)pageFormat.getImageableWidth()
wPage+=wPage/2
hPage=(int)pageFormat.getImageableHeight()
pg.setClip(0,0,wPage,hPage)
}
wPage=wPage-2*leftSpace
hPage=hPage-2*topSpace
xStart=leftSpace
xEnd=wPage-2
//为画布设置颜色和字体
int y=topSpace
pg.setFont(titleFont)
pg.setColor(Color.black)
//画标题,并使其居中
Font fn=pg.getFont()
FontMetrics fm=pg.getFontMetrics()
y+=fm.getAscent()
alignText(title,pg,y,xStart,xEnd,headAlign)
y+=30
x=leftSpace+2
Font headerFont=new Font("宋体",Font.BOLD,14)
pg.setFont(headerFont)
fm=pg.getFontMetrics()
int h=fm.getAscent()
yStart=y-1
y+=h
pg.setFont(headerFont)
fm=pg.getFontMetrics()
int header=y
h=fm.getHeight()
//计算行高,每页行数,总行数和指定页码的起始行、结束行
int rowH=Math.max(h,10)
int tailH=rowH+30
int rowPerPage=0
int leftPix=0
if(hasTail){
rowPerPage=(hPage-header-tailH)/rowH
leftPix=(hPage-header-tailH)%rowH
yEnd=hPage-leftPix-tailH+2
}
else{
rowPerPage=(hPage-header)/rowH
leftPix=(hPage-header)%rowH
yEnd=hPage-leftPix+2
}
pg.drawString(strTemp,x,y)
//画表格边框
pg.drawLine(xStart,yStart,xStart,yEnd)
pg.drawLine(xStart,yStart,xEnd,yStart)
pg.drawLine(xEnd,yStart,xEnd,yEnd)
pg.drawLine(xStart,yEnd,xEnd,yEnd)
//打印页码
if(hasTail){
int pageNumber=pageIndex+1
String s="第"+pageNumber+"页"
alignText(s,pg,yEnd+30,xStart,xEnd,tailAlign)
}
System.gc()
return PAGE_EXISTS
}
/**
* 文字排列,坐标在y处,显示范围(start-end)
* 0表示居中显示,1表示左对齐,2表示右对齐
*/
private void alignText(String s,Graphics pg,int y,int start,
int end,int mode){
Font fn=pg.getFont()
FontMetrics fm=pg.getFontMetrics()
int wString=fm.stringWidth(s)
int x=start
switch(mode)
{
case 0:
if((end-start-wString)>0) x=start+(end-start-wString)/2
break
case 1:
break
case 2:
if((end-start-wString)>0) x=start+(end-start-wString)
break
}
pg.drawString(s,x,y)
}
public static void main(String[] args){
Print p=new Print()
p.doPrint()
}
}
[code]
运行方法:
>javac -d . Print.java
>java Print
自己运行一下
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