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Javascript: wait until ajax request finishes to close page [duplicate]

Edit Based on your comment below, a revised answer: If you want to block until a previously-initiated request completes, you can do it like this: window.onbeforeunload = function(event) { var s; event = event || window.event; if (requestsPending > 0) { s = “Your most recent changes are still being saved. ” + “If you … Read more

Logging user activity in web app

It’s actually pretty simple to achieve using MDC/NDC functionality built into Log4J (SLF4J and Logback only support MDC). Implementing MDC filter First, implement a servlet filter that will add username to MDC/NDC. Logback provides convenient MDCInsertingServletFilter, Spring framework also adds Log4jNestedDiagnosticContextFilter to the store. Look at them but you will need a custom one like … Read more