Aspose.Note是一款专门用于处理和操作Microsoft Office OneNote文档的无图形界面类库，可以读取、写入、转换OneNote文档，也可以用于解析Microsoft Office OneNote文档，快速把文档的元素，如页数、图片、多文本、下划线、标题、表格等分割开来，控件提供的DocumentVisitor类可以用于快速提取OneNote文档内的各种内容，具体可以参考下面的Java代码：
public void ExtractOneNoteContent()
{
// Open the document we want to convert.
Document doc = new Document("MyOneNote.one", new LoadOptions());
// Create an object that inherits from the DocumentVisitor class.
MyOneNoteToTxtWriter myConverter = new MyOneNoteToTxtWriter();
// This is the well known Visitor pattern. Get the model to accept a visitor.
// The model will iterate through itself by calling the corresponding methods
// on the visitor object (this is called visiting).
//
// Note that every node in the object model has the Accept method so the visiting
// can be executed not only for the whole document, but for any node in the document.
doc.accept(myConverter);
// Once the visiting is complete, we can retrieve the result of the operation,
// that in this example, has accumulated in the visitor.
System.out.println(myConverter.GetText());
System.out.println(myConverter.NodeCount());
}
//Additional Class
public class MyOneNoteToTxtWriter extends DocumentVisitor {
public MyOneNoteToTxtWriter() {
nodecount = 0;
mIsSkipText = false;
mBuilder = new StringBuilder();
}
/// <summary>
/// Gets the plain text of the document that was accumulated by the visitor.
/// </summary>
public String GetText()
{
return mBuilder.toString();
}
/// <summary>
/// Adds text to the current output. Honors the enabled/disabled output flag.
/// </summary>
private void AppendText(String text)
{
if (!mIsSkipText)
mBuilder.append(text);
}
/// <summary>
/// Called when a RichText node is encountered in the document.
/// </summary>
public /*override*/ void VisitRichTextStart(RichText run)
{
++nodecount;
AppendText(run.getText());
}
/// <summary>
/// Called when a Document node is encountered in the document.
/// </summary>
public /*override*/ void VisitDocumentStart(Document document)
{
++nodecount;
}
/// <summary>
/// Called when a Page node is encountered in the document.
/// </summary>
public /*override*/ void VisitPageStart(Page page)
{
++nodecount;
}
/// <summary>
/// Called when a Title node is encountered in the document.
/// </summary>
public /*override*/ void VisitTitleStart(Title title)
{
++nodecount;
}
/// <summary>
/// Called when a Image node is encountered in the document.
/// </summary>
public /*override*/ void VisitImageStart(Image image)
{
++nodecount;
}
/// <summary>
/// Called when a OutlineGroup node is encountered in the document.
/// </summary>
public /*override*/ void VisitOutlineGroupStart(OutlineGroup outlineGroup)
{
++nodecount;
}
/// <summary>
/// Called when a Outline node is encountered in the document.
/// </summary>
public /*override*/ void VisitOutlineStart(Outline outline)
{
++nodecount;
}
/// <summary>
/// Called when a OutlineElement node is encountered in the document.
/// </summary>
public /*override*/ void VisitOutlineElementStart(OutlineElement outlineElement)
{
++nodecount;
}
/// <summary>
/// Gets the total count of nodes by the Visitor
/// </summary>
public int NodeCount()
{
//get { return this.nodecount; }
return this.nodecount;
}
private StringBuilder mBuilder;
private boolean mIsSkipText;
private int nodecount;
}
