📄 counterservlet.java

📁 这是我们老师的做的,挺不错的,要下载的话可以下载来

💻 JAVA

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package counterservlet;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class CounterServlet extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=GBK";

    //Initialize global variables
    public void init() throws ServletException {
    }

    //Process the HTTP Get request
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        ServletContext context = getServletContext();
        Integer count = (Integer)context.getAttribute("counter");
        if(null == count)
        {
            count = new Integer(1) ;
        }
        else
        {
            count = new Integer(count.intValue()+1) ;
        }

        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();

        out.println("<html>");
        out.println("<head><title>CounterServlet</title></head>");
        out.println("<body bgcolor=\"#ffffff\">");
        out.println("<h1>该网页已经被访问了  "+count+"  次");
        out.println("</body>");
        out.println("</html>");
        context.setAttribute("counter",count) ;
        out.close();
    }

    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response) throws
            ServletException, IOException {
        doGet(request, response);
    }

    //Clean up resources
    public void destroy() {
    }
}

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