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 Post subject: Creating Configuration object inside doGet method of servlet
PostPosted: Thu Sep 29, 2016 2:34 am 
Newbie

Joined: Thu Sep 29, 2016 2:26 am
Posts: 1
The sevlet code giving Exception 'java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "createClassLoader")'

Code:
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws ServletException, IOException {

    String name=req.getParameter("name");
    String email=req.getParameter("email");
    int marks=Integer.parseInt(req.getParameter("marks"));

    Student st=new Student(0,name,email,marks);

    System.out.println("Inside get method before configuration object generation");
    Configuration cfg=new Configuration();
    System.out.println("After configuration initialization");
    cfg.configure("Resourses/hibernate.cfg.xml");
    System.out.println("after giving hibernate config file");
    sf=cfg.buildSessionFactory();

}



I am getting this error

Code:
Sep 25, 2016 8:56:41 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Controller.StudentRegistrationServlet] in context with path [/StudentRegistration] threw exception
java.security.AccessControlException: access denied ("java.lang.RuntimePermission" "createClassLoader")
    at java.security.AccessControlContext.checkPermission(AccessControlContext.java:457)
    at java.security.AccessController.checkPermission(AccessController.java:884)
    at java.lang.SecurityManager.checkPermission(SecurityManager.java:549)



Creation of Configuration object inside servlet giving me this exception. Pls help.


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 Post subject: Re: Creating Configuration object inside doGet method of servlet
PostPosted: Thu Sep 29, 2016 3:13 am 
Hibernate Team
Hibernate Team

Joined: Thu Sep 11, 2014 2:50 am
Posts: 1638
Location: Romania
The SessionFactory is meant to be created once, when the web/application server bootstraps. This is because the SessionFactory is an expensive object which takes time to initialize.

You should never create a SessionFactory on every HTTP request. Instead, you should use the already created SessionFactory to spawn a new Session instance for every HTTP request.

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