📄 showtemperatureservlet.java
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/*
* Created on 2004-6-13
*
* To change the template for this generated file go to
* Window - Preferences - Java - Code Generation - Code and Comments
*/
package com.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author haoyulong
*
* To change the template for this generated type comment go to
* Window - Preferences - Java - Code Generation - Code and Comments
*/
public class ShowTemperatureServlet extends HttpServlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
//TODO Method stub generated by Lomboz
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
String Temperature=(String)getServletConfig().getServletContext().getAttribute("Temperature");
if(Temperature==null){Temperature=new String("0");
}
String oldTemperature=(String)request.getSession().getAttribute("OldTemperature");
out.println("<HTML><HEAD><TITLE>气温信息显示 "
+ "</TITLE></HEAD>");
out.println("<BODY>");
out.println("当前最新气温："+Temperature+"摄氏度");
if(oldTemperature!=null){
out.println("<BR>");
out.println("更新前气温："+oldTemperature+"摄氏度");
}
out.println("</BODY></HTML>");
//更新会话中的气温信息
request.getSession().setAttribute("OldTemperature",Temperature);
}
}
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