无法获得 JDBC 连接/事务未激活

Question

I'm struggling with a call to my database through Spring Jdbc, none of the questions on stack overflow worked for me so that's why I am asking it.

Here's my DAO

public class CruDao extends JdbcDaoSupport implements ICruDao{

    private final Logger LOG = LoggerFactory.getLogger(CruDao.class);

    @Override
    public String obtainCode(String codiModel) {
        String code = null;

        SimpleJdbcCall funcio = new SimpleJdbcCall(getJdbcTemplate()).withFunctionName("funcCru");
        MapSqlParameterSource parameter = new MapSqlParameterSource().addValue("id", codiModel);

        try {
            code = funcio.executeFunction(String.class, parameter);
            LOG.debug("Generated Code: " + code);

        }catch(Exception ex){
            LOG.error("Error",ex);
        }

        return codiCRU;
    }

}

Here's the exception it throws when calls the executeFunction line:

org.springframework.dao.DataAccessResourceFailureException: Error retreiving database metadata; nested exception is org.springframework.jdbc.support.MetaDataAccessException: Could not get Connection for extracting meta data; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.jboss.util.NestedSQLException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -3f5796c1:d4ac:5e1c3647:9ff status: ActionStatus.ABORTED >; - nested throwable: (javax.resource.ResourceException: Transaction is not active: tx=TransactionImple < ac, BasicAction: -3f5796c1:d4ac:5e1c3647:9ff status: ActionStatus.ABORTED >)

I have correctly declared the beans for the datasource with the information of the database.

EDIT The method where I call my DAO was already @Transactional

@Override
    @Transactional
    public byte[] obtenirModel(String codiModel) {

        byte[] genDocByteArray = null;

        codiCRU = cruDao.obtainCode(codiModel);

        if(codiCRU == null || codiCRU.length() < 1){
            log.error("Errorrr");
            return null;
        }

        ...

What I am missing? Thanks in advise.

Answer 1

You need to have an active transaction while accessing the db. You have defined the transaction manager bean in your xml, but not using it.You need to annotate the service method @Transactional who is calling this obtainCode method. Also note that, @Transactional annotated method needs to be public and called from another bean(due to proxying mechanism), to make it work properly.