return "utf-8";
return SessionUtil.getProperty("file.encoding", "8859_1");
    public static String getDefaultJavaCharset() {        try {            String charset = System.getProperty("mail.mime.charset");            if (charset != null) {                return javaCharset(charset);            }            charset = System.getProperty("file.encoding");            if (charset != null) {                return charset;            }        } catch (SecurityException e) {                // ignore        }        return "utf-8";    }