Hi, I have two servlets A and B. When a button in Servlet A has been clicked servlet B gets invoked. I have a string array in servlet A which I want to use in servlet B. Could anyone tell me how I can do it. Is it possible? Thanks Chak
Author and all-around good cowpoke
Joined: Mar 22, 2000
Assuming both sevlets are in the same application, passing around objects like arrays of strings is what HttpSession objects are for. Incidently, saying something like: "When a button in Servlet A has been clicked servlet B gets invoked." represents sloppy thinking - servlet A may make a HTML page that has a button which can be clicked, but servlet A does not contain a button. You should always keep in mind that a servlet just gets a request and creates a response - any connection between repeated requests has to be created by the programmer. Bill
2 ways... 1. Before you get to servlet A is it possible to put this String in to the session...
Then get the array out of the session in servlet B.
2. You could try outputing the array into a hidden field in the page so that it gets submitted to servlet B. This is messy and a "bad practice" but it will work...usually. Hope this helps. [This message has been edited by Heath Lilley (edited August 21, 2001).]
Joined: Oct 20, 2000
Hi, Thanks for the reply and I am sorry it was a mistake to mention "When button in Servlet A..." I have another question. I have two servlets A and B. When a button in HTML page created by Servlet A has been clicked the control goes to another HTML page which contains a button, when clicked invokes servlet B. Now how can I make the control go from Servlet B to servlet A after the doPOst method is executed in Servlet B. The doPOST method in servlet B does a database operation. Can I add a statement at the end of doPOST method such that after executing the database operation the page created by servlet A gets displayed. Thanks Chak
Joined: Jan 09, 2001
I think i understand your question ... You want to direct the user to servlet A from servlet B. If this is what you want to do, you need to look at the following object.method.
You can send the request and response to any servlet/jsp you want by using this method...as long as the servlet/jsp is in the same web application.