在Java上打印多个可打印页面
我需要在我的应用程序上打印多页,但当我尝试打印它时,我只打印了一页,或者同一页打印了5次,例如 我把代码放在下面:在Java上打印多个可打印页面,java,eclipse,printing,Java,Eclipse,Printing,我需要在我的应用程序上打印多页,但当我尝试打印它时,我只打印了一页,或者同一页打印了5次,例如 我把代码放在下面: MyPrintableTable mpt = new MyPrintableTable(); PrinterJob job = PrinterJob.getPrinterJob(); //PageFormat pf = job.defaultPage(); job.setPrintable(mpt); job.printDialog();
MyPrintableTable mpt = new MyPrintableTable();
PrinterJob job = PrinterJob.getPrinterJob();
//PageFormat pf = job.defaultPage();
job.setPrintable(mpt);
job.printDialog();
try
{
job.print();
}
catch (PrinterException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
“MyPrintableTable”类:
class MyPrintableTable implements Printable
{
public int print(Graphics g, PageFormat pf, int pageIndex)
{
if (pageIndex != 0)
return NO_SUCH_PAGE;
Graphics2D g2 = (Graphics2D) g;
g2.setFont(new Font("Serif", Font.PLAIN, 16));
g2.setPaint(Color.black);
int x = 100;
int y = 100;
for(int i = 0; i < sTable.size(); i++)
{
g2.drawString(sTable.get(i).toString(), x, y);
y += 20;
}
return PAGE_EXISTS;
}
}
类MyPrintableTable实现可打印
{
公共整型打印(图形g、页面格式pf、整型页面索引)
{
如果(页面索引!=0)
不返回此类页面;
图形2d g2=(图形2d)g;
g2.setFont(新字体(“衬线”,Font.PLAIN,16));
g2.setPaint(颜色为黑色);
int x=100;
int y=100;
对于(int i=0;i有人能帮我吗?这里有一个测试程序,演示了我之前在评论中建议的原则。它基于来自的想法以及问题中的代码。在实际程序中,我可能会计算
linesPerPage
,而不是编译成数字
public class Test {
public static void main(String[] args) {
MyPrintableTable mpt = new MyPrintableTable();
PrinterJob job = PrinterJob.getPrinterJob();
// PageFormat pf = job.defaultPage();
job.setPrintable(mpt);
job.printDialog();
try {
job.print();
} catch (PrinterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
class MyPrintableTable implements Printable {
private int linesPerPage = 20;
private List<String> sTable = new ArrayList<String>();
{
for (int i = 0; i < 100; i++) {
sTable.add("Line" + i);
}
}
public int print(Graphics g, PageFormat pf, int pageIndex) {
if (pageIndex * linesPerPage >= sTable.size())
return NO_SUCH_PAGE;
Graphics2D g2 = (Graphics2D) g;
g2.setFont(new Font("Serif", Font.PLAIN, 16));
g2.setPaint(Color.black);
int x = 100;
int y = 100;
for (int i = linesPerPage * pageIndex; i < sTable.size()
&& i < linesPerPage * (pageIndex + 1); i++) {
g2.drawString(sTable.get(i).toString(), x, y);
y += 20;
}
return PAGE_EXISTS;
}
}
公共类测试{
公共静态void main(字符串[]args){
MyPrintableTable mpt=新的MyPrintableTable();
PrinterJob job=PrinterJob.getPrinterJob();
//PageFormat pf=job.defaultPage();
作业。可设置打印(mpt);
job.printDialog();
试一试{
job.print();
}捕获(打印异常e){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
}
}
类MyPrintableTable实现可打印{
专用int linesPerPage=20;
private List sTable=new ArrayList();
{
对于(int i=0;i<100;i++){
稳定。添加(“行”+i);
}
}
公共整型打印(图形g、页面格式pf、整型页面索引){
如果(pageIndex*linesPerPage>=稳定的.size())
不返回此类页面;
图形2d g2=(图形2d)g;
g2.setFont(新字体(“衬线”,Font.PLAIN,16));
g2.setPaint(颜色为黑色);
int x=100;
int y=100;
对于(int i=linesPerPage*pageIndex;i
为什么不使用pageIndex
选择要打印的数据?看到了吗?我在两个小时前看到了,但我不知道如何在代码中使用它,你能帮我吗?你需要确定哪些数据属于哪个页面,并相应地修改for循环。可能类似于(inti=pageIndex*linesPerPage;ilinesPerPage
是您计划在每页上显示的表项数。