How to convert a Java resultset into JSON?

Question

I have a resultset as a result of a MySQL query using the JDBC connector. So my job is to convert the resultset into a JSON format. So that I can send it to the clientside a

Answer 1

If you utilizing the Spring' JDBCTemplate for executing stored functions which returns cursor as list of the tables entries and, in turns, you wish to map it as a list of the specified bean, then there is the most neat solution:

import com.fasterxml.jackson.databind.ObjectMapper;

...

final static ObjectMapper mapper = new ObjectMapper();

...

 List populateExecuteRetrieve(SimpleJdbcCall call, Map inputParameters, Class outputClass) {
    List sqlResult;
    sqlResult = call.executeFunction(ArrayList.class, parameter);
    return sqlResult
            .stream()
            .map(entry -> mapper.convertValue(entry, outputBeanClass))
            .collect(Collectors.toList());
}

You are welcome!

Happy coding!