How to get rid of the repeated code in the servlet in this example?

Question

Java

In each servlet in doGet, I repeat this code to display the user's balance on each page.

BigDecimal balance = userServlet.getBalance();
request.setAttribute("balance", balance);

Is it normal? And is there a way to get it out somehow so as not to repeat itself?

Answer 1

You can write a filter (implemented javax.servlet.Filter) into which to insert these lines - tutorials.jenkov.com/java-servlets/servlet-filters.html
And in general, you can put all the work with the user into the filter...