Yes, There are a couple of primary ways in which a servlet can be automatically refreshed. One way is to add a “Refresh” response header containing the number of seconds after which a refresh should occur. The TestServlet class below shows an example of this.
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class TestServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
performTask(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
performTask(request, response);
}
private void performTask(HttpServletRequest request, HttpServletResponse response) throws ServletException,
IOException {
response.setContentType("text/html");
response.addHeader("Refresh", "5");
PrintWriter out = response.getWriter();
out.println("TestServlet says hi at " + new Date());
}
}
