富文本中文字部分提取

//富文本編輯器內的內容保存到數據庫后是一段html代碼，先因某些需求需要去掉其中的樣式等內容，只保留文字，代碼如下：
public class HtmlToText extends HTMLEditorKit.ParserCallback {
    private static HtmlToText html2Text = new HtmlToText();
    StringBuffer stringBuffer;
    private HtmlToText() {
    }
    public void parse(String str) throws IOException {
        InputStream iin = new ByteArrayInputStream(str.getBytes());
        Reader in = new InputStreamReader(iin);
        stringBuffer = new StringBuffer();
        ParserDelegator delegator = new ParserDelegator();
        delegator.parse(in, this, Boolean.TRUE);
        iin.close();
        in.close();
    }
    public void handleText(char[] text, int pos) {
        stringBuffer.append(text);
    }
    public String getText() {
        return stringBuffer.toString();
    }
    public static String getContent(String str) {
        try {
            html2Text.parse(str);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return html2Text.getText();
    }
    public static void main(String[] args) {
        String text = HtmlToText.getContent("你的富文本字符串");
        System.out.println(text);
    }
}