initparamservlet.java

来自「beginJsp2.0外文书籍源代码」· Java 代码 · 共 32 行

package com.wrox.servlets;

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

public class InitParamServlet extends HttpServlet 
{
  public void doGet(HttpServletRequest req, HttpServletResponse res) 
              throws IOException, ServletException 
  {

    res.setContentType("text/plain");
    PrintWriter out = res.getWriter();

    String url = getInitParameter("URL");

    ServletConfig config = getServletConfig();
    ServletContext context = getServletContext();
    String uid = config.getInitParameter("UID");
    String pwd = config.getInitParameter("PWD");
    String port = context.getInitParameter("some-port");

    out.println("Values retrieved for the init parameters are: ");
    out.println("URL: " + url);
    out.println("UID: " + uid);
    out.println("PWD: " + pwd);
    out.println("some-port: " + port);
  }
}