Do you want to write debug messages? you can either print to standard out or print to browser screen with the response (for testing). Or you can log to file for checking
Gang groundsea wrote: >Bob Withers,您好! > > I mean how the filter control the method when the method is succeful, which do > not throw Exception. > >======= 2004-01-08 05:55:00 您在来信中写道:======= > > > >>When the final filter in a chain calls doFilter() the service method of the >>servlet is called. If the servlet throws an exception it can be caught and >>acted upon by a filter if you wish. >> >>try >>{ >> doFilter(req, resp, chain); >>} >>catch (Exception e) >>{ >> // the servlet failed >>} >> >>Regards, >>Bob >> >>At 02:18 PM 1/8/2004 +0800, you wrote: >> >> >>>SERVLET-INTEREST! >>> >>> when a method of a servlet is successful, its filter begin to >>>do something, or the filter not do anything. >>> I want to know, in filter how to know whether that method is successful? >>> >>> 致 >>>礼! >>> >>> >>> groundsea >>>[EMAIL PROTECTED] >>> 2004-01-08 >>> >>>___________________________________________________________________________ >>>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >>>of the message "signoff SERVLET-INTEREST". >>> >>>Archives: http://archives.java.sun.com/archives/servlet-interest.html >>>Resources: http://java.sun.com/products/servlet/external-resources.html >>>LISTSERV Help: http://www.lsoft.com/manuals/user/user.html >>> >>> >>___________________________________________________________________________ >>To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >>of the message "signoff SERVLET-INTEREST". >> >>Archives: http://archives.java.sun.com/archives/servlet-interest.html >>Resources: http://java.sun.com/products/servlet/external-resources.html >>LISTSERV Help: http://www.lsoft.com/manuals/user/user.html >> >> > >= = = = = = = = = = = = = = = = = = = = > > > 致 >礼! > > > groundsea >[EMAIL PROTECTED] > 2004-01-09 > >___________________________________________________________________________ >To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >of the message "signoff SERVLET-INTEREST". > >Archives: http://archives.java.sun.com/archives/servlet-interest.html >Resources: http://java.sun.com/products/servlet/external-resources.html >LISTSERV Help: http://www.lsoft.com/manuals/user/user.html > > > ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html