Exception handling in Struts 2 and Hibernate

Question

Suppose that we have developed a website in Struts2, Hibernate, MySQL and we have added few try/catch blocks here are there which encloses database calls via Hi

Answer 1

Exceptions are the results of the program or developer can't handle the situation with abnormal behavior. In this case the developer could know that the exception is thrown and could make some actions toward resolving the case.

The ordinary user doesn't need to know about any exception but the system administrators actually do. So, logging exceptions are good making the possibility to solve any problems further.

This is also useful on the development stage, when the developer needs to debug the issue via printing stacktrace, rethrowing exception. Rarely applicable in this situation the catching and ignoring exceptions.

In the normal situation exceptions should be caught, logged and rethrown. But in the Struts2 you could handle uncaught exceptions via creating the default application interceptor stack

  
    true
    ERROR
  

any exceptions not caught by this application will be logged and then handled by the global exception mapping

  



  /error_page.jsp