The error This ResultSet is closed meant you are trying to get data from a result set which has no data. It's probably an error in your program logic. At least one place looks wrong:

        if (search1!= null) {
            params.add(search1);
        }
        if (search1 != null) {
            params.add(search2);
        }

Did you mean?

        if (search1 != null) {
            params.add(search1);
        }
        if (search2 != null) {
            params.add(search2);
        }