import com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException; //导入依赖的package包/类
public static void resetDatabaseTable(String tableName) throws Exception
{
  try
  {
    doResetDatabaseTable(tableName);
  }
  catch (MySQLNonTransientConnectionException e) // Database probably doesn't exist, create it.
  {
    createDatabase();
  }
  doResetDatabaseTable(tableName);
}
 

import com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException; //导入依赖的package包/类
/**
 * Indicates whether an exception is a symptom of MySQL being overloaded or slow.
 * Typical symptoms are connection pool exhaustion or MySQL connection/socket timeouts.
 */
public static boolean isExceptionIndicativeOfOverload(Exception e) {
  return e instanceof MySQLNonTransientConnectionException
      || e instanceof CommunicationsException
      || (e instanceof SQLNestedException
              && e.getCause() instanceof NoSuchElementException);
}
 

import com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException; //导入依赖的package包/类
@ExceptionHandler(value = {SQLIntegrityConstraintViolationException.class, MySQLNonTransientConnectionException.class, DataIntegrityViolationException.class})
public ModelAndView handleSQLConstraintException(Exception ex) {
    final ModelAndView mav = new ModelAndView("exception");
    mav.addObject("message", MessageFactory.error("jpm.constraint.exception"));
    JPMUtils.getLogger().fatal("Constraint Exception", ex);
    return mav;
}