Big jsp Bug in Weblogic! UnNoticed by weblogic!

Question

          <%@ page language="java" contentType="text/html" %> <%! public void jspInit() { System.out.println("Hello"); } %> <% out.println("jsp executed"); %>
          The above code displays "Hello" on the command line or Dos and "jsp executed" on the browser!
          When this jsp is loaded first time it executes correctly. when it is again loaded then jsp init method is not executed. This is also fine.
          But the problem is when I restart my weblogic server and clear the browser cache and then load the jsp file then the init method is called TWO times! "Hello" is displayed two times!
          why this is so? Is there any bug in weblogic5.1? Or am I doing something wrong? please tell
          

Answer 1

          You hit the JSP and the .class file gets loaded into memory and jspInit() executes. Fine.
          Once loaded into memory, the next thing the JSP does is check if it 'isStale()' -
          this compares the date-stamp that was on the .jsp file when the jsp was compiled
          with the date-stamp on the .jsp file on disk. This is in the code of the JSP itself, it
          does not compare the date of the .class file with the date of the .jsp file - so it was
          necessary to load the JSP in memory (an call jspInit()) simply to check the if it was
          up-to-date. In your case, it is not up-to-date. The JSP is compiled, loaded into
          memory and jspInit() executes - again.
          Mike Reiche
          Robert Patrick <[email protected]> wrote:
          >Hi,
          >
          >Please realize that this is NOT an official BEA support forum. All BEA personnel that monitor this newsgroup and answer questions do it on their own time because we (yes, I work for
          >BEA) want to help people be successful with our products. If you want an official response from BEA to your problem, then I suggest that you send mail to [email protected], call our toll
          >free support number [phone] and/or talk with your BEA Account Representative.
          >
          >As for your problem, I am not sure what is happening but this may be a simple matter of not understanding how JSP reloading works. I am more than willing to help you but you need to
          >provide me with a more detailed description of exactly what it is that you are doing, what service pack level are you using, etc.
          >
          >Thanks,
          >Robert
          >
          >gopal wrote:
          >
          >> <%@ page language="java" contentType="text/html" %> <%! public void jspInit() { System.out.println("Hello"); } %> <% out.println("jsp executed"); %>
          >>
          >> The above code displays "Hello" on the command line or Dos and "jsp executed" on the browser!
          >>
          >> When this jsp is loaded first time it executes correctly. when it is again loaded then jsp init method is not executed. This is also fine.
          >>
          >> But the problem is when I restart my weblogic server and clear the browser cache and then load the jsp file then the init method is called TWO times! "Hello" is displayed two times!
          >>
          >> why this is so? Is there any bug in weblogic5.1? Or am I doing something wrong? please tell
          >