?? usersessioncountersetter.java
字號:
package ServletApi;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class UserSessionCounterSetter extends HttpServlet {
private int calledCount;
public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
res.setContentType("TEXT/HTML");
PrintWriter out = res.getWriter();
HttpSession session = req.getSession(true);
if (session.isNew() || session.getValue("usersession")==null) {
session.putValue("usersession", new SaveServletStats());
}
SaveServletStats ustats = (SaveServletStats)session.getValue("usersession");
calledCount++;
ustats.calledCount++;
out.println("<HTML><TITLE>SessionCounter</TITLE><BODY>");
out.println("<H4>This servlet has been called: </H4><BR>");
out.println("<B>" + calledCount + "</B> times since the servlet was loaded THIS servlet life-cycle session<BR>");
out.println("<B>" + ustats.calledCount + "</B> times since the servlet was loaded by this user<BR>");
out.println("</BODY></HTML>");
out.close();
}
public void init(ServletConfig config) throws ServletException {
super.init(config);
calledCount = 0;
}
}
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