java 正则表达式过滤html元素

/**
     * filter all html element.
     * For example:<a href="www.sohu.com/test">hello!</a>
     * The filter result is :hello!
     * Notice:This method filter the text between "<" and ">"
     * @param element
     * @return
     */
    public static String getTxtWithoutHTMLElement (String element)
    {
//      String reg="<[^<|^>]+>";
//      return  element.replaceAll(reg,"");
        
        if(null==element||"".equals(element.trim()))
        {
            return element;
        }

        Pattern pattern=Pattern.compile("<[^<|^>]*>");
        Matcher matcher=pattern.matcher(element);
        StringBuffer txt=new StringBuffer();
        while(matcher.find())
        {
            String group=matcher.group();
            if(group.matches("<[\\s]*>"))
            {
                matcher.appendReplacement(txt,group);    
            }
            else
            {
                matcher.appendReplacement(txt,"");
            }
        }
        matcher.appendTail(txt);
        repaceEntities(txt,"&","&");
        repaceEntities(txt,"<","<");        
        repaceEntities(txt,">",">");
        repaceEntities(txt,""","\"");
        repaceEntities(txt," ","");
        
        return txt.toString();
    }



下面是测试用例：
public void testGetTxtWithoutHTMLElement ()
    {
        
        assertEquals("test",ExcelHssfView.getTxtWithoutHTMLElement("<a href='a/test'>test</a>"));
        
        assertEquals("test",ExcelHssfView.getTxtWithoutHTMLElement("<a href='a/test'>test"));
        
        assertEquals("test",ExcelHssfView.getTxtWithoutHTMLElement("<input type='text'>test</input>"));
        
        assertEquals("test",ExcelHssfView.getTxtWithoutHTMLElement("<p>test"));
        
        assertEquals("test",ExcelHssfView.getTxtWithoutHTMLElement("<table><tr><td>test</td></tr></table>"));
        
        assertEquals("te<st",ExcelHssfView.getTxtWithoutHTMLElement("<p>te<st"));
        
        assertEquals("te>st",ExcelHssfView.getTxtWithoutHTMLElement("<p>te>st"));
        
        assertEquals("tst",ExcelHssfView.getTxtWithoutHTMLElement("<p>t<e>st"));
        
        assertEquals("t<st",ExcelHssfView.getTxtWithoutHTMLElement("<p>t<<e>st"));
        
        assertEquals("<>test",ExcelHssfView.getTxtWithoutHTMLElement("<p><>test"));
        
        assertEquals("< >test",ExcelHssfView.getTxtWithoutHTMLElement("<p>< >test"));
        
        assertEquals("<<>test",ExcelHssfView.getTxtWithoutHTMLElement("<p><<>test"));
        
        assertEquals("test",ExcelHssfView.getTxtWithoutHTMLElement("<table><tr><td> test</td></tr></table>"));
        
    }