Java - 另存为 RTF 不支持文本对齐？

Question

当我将样式化的 JTextPane 保存为 RTF，然后重新打开它时，不会保留文本对齐方式。以下是我的方法:

private void saveAsRTF(File outfile) {
RTFEditorKit rtfkit = new RTFEditorKit();
StyledDocument doc = (StyledDocument) pane.getDocument();
try {
    FileOutputStream fwi = new FileOutputStream(outfile);
    rtfkit.write(fwi, doc, 0, doc.getEndPosition().getOffset());
    fwi.close();
} catch (IOException ioe) {
    ioe.printStackTrace();
} catch (BadLocationException ble) {
    ble.printStackTrace();
}
}

和(打开 RTF)

 RTFEditorKit rtf = new RTFEditorKit();
  FileInputStream fi = new FileInputStream(j.getSelectedFile());
  rtf.read(fi, pane.getStyledDocument(), 0);

最后，首先对齐文本:

 SimpleAttributeSet attribs = new SimpleAttributeSet();  
StyleConstants.setAlignment(attribs , StyleConstants.ALIGN_CENTER);  
pane.setParagraphAttributes(attribs,true);

Answer 1

默认的 RTFEditorKit 确实很有限。尝试与 http://java-sl.com/advanced_rtf_editor_kit.html 相同