servlet.java

来自「实现了网站是否正常的简单监控系统」· Java 代码 · 共 73 行

package mapabc;
/**
 * <p>Title: 服务器监控</p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: Mapabc.com</p>
 * @author wangchangbao
 * @version 1.0
 */
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.rmi.*;
import java.net.*;
public class Servlet extends HttpServlet {
   private static final String CONTENT_TYPE = "text/html; charset=GBK";
   //Initialize global variables
   Mythread th1=new Mythread();
   String geturl;//被监控服务器字符串
   String getaddress;//邮件地址字符串
   String re_url;//此服务器地址
   public void init() throws ServletException {
   ServletConfig config = this.getServletConfig();
   Enumeration enum = config.getInitParameterNames();
      while (enum.hasMoreElements()) {
        String myparametername = (String) enum.nextElement();
        geturl = config.getInitParameter("urlstring");
        getaddress=config.getInitParameter("addressstring");
        re_url=config.getInitParameter("re_url");
      }
   //re_url="meta http-equiv='refresh' content='5;url=http://localhost:8080/servlet'";
   //geturl="http://localhost:8888/servlet;http://localhost:8080/servlet;http://localhost:8888/servlet1";
   //getaddress="[e-mail]";
   th1.SetURL(geturl);
   th1.Set_address(getaddress);
   th1.start();
   }
  //Process the HTTP Get request
  public void doGet(HttpServletRequest request, HttpServletResponse response)
  throws ServletException, IOException {
      response.setContentType(CONTENT_TYPE);
      PrintWriter out = response.getWriter();
      out.println("<html>");
      out.println("<head><title>服务器工作状态</title></head>");
      out.println("<body bgcolor=\"#ffffff\">");
      out.println("<"+re_url+">");
      out.println("<h1>服务器工作状态</h1>");
      out.println("<HR SIZE=2 ALIGN=LEFT WIDTH=100%>");
      out.println("<table width='100%' border='0'>");
      out.println("<tr>");
      out.println("<td>"+"URL"+"</td>"+"<td>"+"工作状态"+"</td>"+"<td>"+"时间"+"</td>");
      out.println("</tr>");
      for(int i=0;i<th1.number;i++)
      {
        out.println("<tr>");
        out.println("<td>"+th1.m_servlet[i]+"</td>");
        if(th1.count[i]=="异常")
          out.println("<td><font color=red>"+th1.count[i]+"</font></td>");
        else
          out.println("<td>"+th1.count[i]+"</td>");
        out.println("<td>"+th1.Time[i]+"</td>");
        out.println("</tr>");
      }
      out.println("</tr>");
      out.println("</table>");
      out.println("</body></html>");
  }
  //Clean up resources
  public void destroy() {th1=null;
  }
}