public static String decode(byte[] data) {
        return data == null ? null : new String(data, RpcConstants.DEFAULT_CHARSET);
    }
@author <a href="mailto:zhanggeng.zg@antfin.com">GengZhang</a>
@since 5.4.0
codec/codec-api/src/main/java/com/alipay/sofa/rpc/codec/common/StringSerializer.java