Use the Request object to prevent JSP caching

Because the browser stores the previously viewed data in the browser's cache, the browser sometimes fetches the data directly from the cache, because after we modify the program, the old data is displayed.

The following code can fix this problem.
 

<%
If (request. getProtocol (). compareTo ("HTTP/1.0") = 0)
Request. setHeader ("Pragma", "no-cache ");
If (request. getProtocol (). compareTo ("HTTP/1.1") = 0)
Request. setHeader ("Cache-Control", "no-cache ");
Response. setDateHeader ("Expires", 0 );

%>