Handy RowMapper base class for Spring JDBC

RowMappers are needed all over the place in your Spring JDBC DAO classes. One challenge that I kept running into was that when I wanted to reuse a particular RowMapper class for numerous queries, there was an ever-present threat of an underlying SQLException if certain columns were not present in the ResultSet. Obviously, a reusable RowMapper will set every field on the object it maps for, however not every ResultSet will include every field. Calling rs.getString("column_name"); will result in an exception being thrown if column_name is not present in the particular ResultSet.

So to solve this problem, I wrote this base RowMapper class:
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