Java-保存为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，文本对齐将不会保留。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RTF EditorKit非常有限。试试同样的http://java-sl.com/advanced_rtf_editor_kit.html

Answer 2

RTF EditorKit对齐已针对Java 9进行了修复。
https://bugs.openjdk.java.net/browse/JDK-8139215