Hi, See intermixed.
> -----Original Message----- > From: Andreas Byström [mailto:[EMAIL PROTECTED] > Sent: 7. mars 2003 10:20 > To: Tomcat Users > Subject: Share Java resources between two (or more) servlets > > > Hi all! > > I'm writing an application that uses (for now) 4 different > servlets. I would like all these servlets to share some java > singelton object. Is this possible? Do all servlets share the > same jvm instance and thereby uses the same singelton object? Sure no problem as long as the singleton object is in the same classloader scope it should not be a problem. Each application is loaded with sepperate classloaders, so as long as the servlets are in the same application and the singleton is in it's classpath too it works. > > I have one servlet that is set to load-on-startup, this > servlet will create the java object (db connections and other > stuff) that I want all servlets to share later on. This > servlet is not used anymore, it hust listens for shutdown and > will not receive any requests. Is this how you should solve a > initialization problem or is there some other way? Use a ServletContextListener to startup such objects, rather than the load-on-startup method of servlets. It has some benefits doing it that way, like, you can do some cleanup (if needed) when the context is destroyed. > When I run my application I start this servlet (servlet1) as > above. But when I then invoke another servlet, servlet2, > (that is not set to > load-on-startup) there is a strange behavior. Using my traces > I can read that it first invokes init on servlet1 again and > then init on servlet2. If I then sends a first reuquest to > servlet3 it just does init on servlet3. If I instead had sent > the first request to 3 before the first request to servlet2 > it is the same behavior but vice versa. when the request > comes to servlet3 it does init on first 1 nd then 3. The > request to servlet 2 now just incokes init on servlet2. Have > anyone a clue of you it can be like this? Not really... How are you "sending the requests" ? -reynir --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
