counter2.java

java程序设计入门教程 书上的源代码 学习JAVA非常好的入门教材代码推荐给大家

/************************ Counter2.java ******************/
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class Counter2 extends HttpServlet
  {
  int count;
  String paramName="" , paramValue="";
  public void init(ServletConfig config)
  throws ServletException
    {
    super.init(config);
    for (Enumeration e=config.getInitParameterNames();
                     e.hasMoreElements();)
      {
      String name=(String)e.nextElement();
      paramName=paramName+name+" ";
      String value=config.getInitParameter(name);
      paramValue=paramValue+value+" ";
      }
    String start = config.getInitParameter("start");
    try { count = Integer.parseInt(start); }
    catch (NumberFormatException e) { count = 0; }
    }
  public void doGet(HttpServletRequest req,
                    HttpServletResponse res)
  throws ServletException, IOException
    {
    res.setContentType("text/plain");
    ServletOutputStream sos=res.getOutputStream();
    PrintWriter pw=new PrintWriter(sos,true);
    pw.println("config