1，什么是书签承前缩放？
换句话来说
设置了承前缩放，当你手动将page4缩放到145%，然后点击书签1，书签1定位到的page1的缩放比例也是145%
2，如何设置书签承前缩放？
使用工具：
承前缩放书签设置：
其他类型书签设置：
3，代码
3.1 书签结构：
3.2 代码
import com.aspose.pdf.*;
public class bookmark {
public static void main(String[] args) {
// Open document
Document pdfDocument = new Document("D:\\chromeDownload\\测试版2.pdf");
OutlineCollection outlines = pdfDocument.getOutlines();
for (OutlineItemCollection outlineItem : (Iterable<OutlineItemCollection>) outlines) {
double soureceZoom = -1;
if (outlineItem.getDestination() != null) {
soureceZoom = getAppointmentZoom(outlineItem.getDestination());
} else if (outlineItem.getAction() != null) {
soureceZoom = getAppointmentZoom(outlineItem.getAction());
}
if(soureceZoom == -1){
System.out.println("书签必须承前缩放，书签名：" + outlineItem.getTitle() + "，缩放因子: " + soureceZoom);
// System.out.println("Title : " + outlineItem.getTitle() + "，缩放因子: " + soureceZoom);
if (outlineItem.size()>0){
checkBookmark(outlineItem);
}
}
private static void checkBookmark(OutlineItemCollection Outlines) {
private static double getAppointmentZoom(IAppointment appointment) {
if (appointment instanceof XYZExplicitDestination) {
XYZExplicitDestination destination = (XYZExplicitDestination) appointment;
return destination.getZoom();
} else if (appointment instanceof GoToAction) {
GoToAction goToAction = (GoToAction) appointment;
if (goToAction.getDestination() instanceof XYZExplicitDestination) {
XYZExplicitDestination destination = (XYZExplicitDestination) goToAction.getDestination();
return destination.getZoom();
} else if (appointment instanceof GoToRemoteAction) {
GoToRemoteAction goToRemoteAction = (GoToRemoteAction) appointment;
if (goToRemoteAction.getDestination() instanceof XYZExplicitDestination) {
XYZExplicitDestination destination = (XYZExplicitDestination) goToRemoteAction.getDestination();
return -1;
}3.3 控制台输出：
注意：承前缩放的因子为 0；
4，书签的xml文件导出
4.1 代码
import com.aspose.pdf.Document;
import com.aspose.pdf.facades.PdfBookmarkEditor;
import java.io.FileNotFoundException;
public class AsposeTest {
public static void main(String[] args) throws FileNotFoundException {
Document document6 = new Document("D:\\测试版2.pdf");
exportBookmarksToXML(document6);
}
public static void exportBookmarksToXML(Document document) throws FileNotFoundException {
PdfBookmarkEditor pdfBookmarkEditor = new PdfBookmarkEditor();
pdfBookmarkEditor.bindPdf(document);
pdfBookmarkEditor.exportBookmarksToXML("D:\\测试版2.xml");
pdfBookmarkEditor.getDocument().save();
}4.2 导出文件：
<?xml version="1.0" encoding="iso_8859_1"?>
<Bookmark>
<Title Open="True">目录缩放到页面级别
<Title Page="2 XYZ 71 769 0" Action="GoTo" Open="True">3.2.S.7 稳定性承前缩放
<Title>3.2.S.7.1 稳定性总结</Title>实际大小
<Title Page="5 FitBH 842" Action="GoTo">3.2.S.7.2 上市后稳定性方案和稳定性承诺</Title>适合可见
<Title Page="8 XYZ 71 523 0" Action="GoTo">3.2.S.7.3 稳定性数据</Title>承前缩放
</Title>
</Title>
<Title Page="1 XYZ 0 842 0" Action="GoTo" Open="False">表目录</Title>承前缩放
<Title Page="1 XYZ 0 842 0" Action="GoTo" Open="False">图目录</Title>承前缩放
</Bookmark>
aspose.pdf 官网指路 ： https://docs.aspose.com/pdf/java/get-update-and-expand-bookmark/
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