Jdbctemplate query for string: EmptyResultDataAccessException: Incorrect result size: expected 1, actual 0

Question

I am using Jdbctemplate to retrieve a single String value from the db. Here is my method.

    public String test() {
        String cert=null;
        Strin         


        

Answer 1

IMHO returning a null is a bad solution because now you have the problem of sending and interpreting it at the (likely) front end client. I had the same error and I solved it by simply returning a List. I used JDBCTemplate.query().

At the front end (Angular web client), I simply examine the list and if it is empty (of zero length), treat it as no records found.