Java打印。使用“Book”类时只打印一页 [英] Java printing. Prints only one page when using `Book` class
本文介绍了Java打印。使用“Book”类时只打印一页的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我使用 预订
类可在打印PDF文档时为页面提供不同的方向。
I use Book
class to provide different orientation to pages when printing PDF document.
但是当我使用Book类时只打印第一页。其他页面不打印。但预订#getNumberOfPages
给我 4
。
But when I use Book class prints only first page. Other pages doesn't printing. But Book#getNumberOfPages
return me 4
.
我的代码如下所示:
public static getDoc(DocAttributeSet dset) {
final PDFFile pdfFile = new PDFFile(buf);
Book book = new Book();
for (int i=0; i<pdfFile.getNumPages(); i++) {
PDFPage page = pdfFile.getPage(i);
PageFormat pageFormat = new PageFormat();
if (page.getAspectRatio() >= 1) {
pageFormat.setOrientation(PageFormat.LANDSCAPE);
} else {
pageFormat.setOrientation(PageFormat.PORTRAIT);
}
boolean needStop = false;
if (pdfFile.getNumPages() - 1 == i ) { // if latest page, then stopping ('needStop' = NO_SUCH_PAGE)
needStop = true;
}
book.append(getPrintable(page, needStop), pageFormat);
}
return new SimpleDoc(book, DocFlavor.SERVICE_FORMATTED.PAGEABLE, dset);
}
private static Printable getPrintable(final PDFPage page, final boolean needStop) {
return new Printable() {
public int print(Graphics g, PageFormat pageFormat, int index) throws PrinterException {
if (needStop) {
return NO_SUCH_PAGE;
}
// no scaling, center PDF
... // code omitted
return PAGE_EXISTS;
}
};
}
请注意:我使用此代码打印文档:
Please note: I'm use this code to print document:
DocPrintJob job = prn.createPrintJob();
job.print(myDoc, aset);
即。我没有使用旧的API:
i.e. I not use old API:
Book bk = new Book();
job.setPageable(bk);
推荐答案
解决方案是将最大页数放入打印在书中,可能是3或10,这并不意味着它将打印所有10,只标记书的大小:
The solution is to place the maximum number of pages to print in the "book", maybe 3 or 10 ,that does not mean that it will print all that 10, only mark the size of the book:
book.append(getPrintable(page, needStop), pageFormat, numPages);
这篇关于Java打印。使用“Book”类时只打印一页的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文