Three page Jump methods in JSP (JSP: Forward, response. sendredirect, response. setheader)

★<JSP: Forward page = "Uri"/>

● Jump without changing the address bar-server jump

● Jump immediately after the jump statement is executed-the subsequent code is no longer executed
● Note: If you use forward redirection, you must release all resources before the redirection.

● When forward is used, the attributes set for the request can still be stored on the next page (setattribute)
● PASS Parameters through <JSP: Param name = "" value ""/>

 

★Response. sendredirect ("Uri ")

● Jump from address bar change-client jump

● Jump back after all code is executed

● The request attribute cannot be saved-The address is changed and the client jumps

● Passing parameters through URL address Rewriting

 

 

★Response. setheader ("header information content", "header information Parameters ")

Similar to response. sendredirect ("Uri"), it is a client jump. Usually used for Refresh. The following is an example of redirecting to a specified page after two seconds: Response. setheader ("refresh", "2; url = Page name ");