/**
     * 
     * @Title: filterXmlChar
    
     * @Description: TODO(解决 '<' 和 '&' 特殊字符的问题)
    
     * @param str
     * @return String
     */
    private static String filterXmlChar(String str) {
        String retstr = "";
        if (notEmpty(str)) {
            retstr = str.replaceAll("<","&lt;")
                        .replaceAll(">","&gt;")
                        .replaceAll("&","&amp;")
                        .replaceAll("'","&apos;")
                        .replaceAll("\"","&quot;");
        }
        return retstr;
    }