java - Display HTML form only once in Tomcat Server -



java - Display HTML form only once in Tomcat Server -

i have tomcat server application in html form displayed. 1 time submit info page redirects page. in back-end there java programme takes hours finish execution. in mean time if some-one tries open html page displaying form(first page) browser or tab, has redirect automatically execution page. possible tomcat server , java? (i using on rhel machine. please not post platform specific solutions.)

here approach:

introduce flag in server side code determine whether multi-hour-job in progress whenever backend job started, set flag. when job done, reset flag. either in servlet doxxx method or in servlet filter, check flag if set redirect, if not homecoming form view

java html forms tomcat redirect

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