📄 admintemperatureservlet.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.ServletContext;
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 AdminTemperatureServlet 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();
//ServletContext con=this.getServletContext();
String Temperature=(String)getServletConfig().getServletContext().getAttribute("Temperature");
if(Temperature==null){
Temperature=(String)getServletContext().getInitParameter("Temperature");//从初始化参数中拿
getServletConfig().getServletContext().setAttribute("Temperature",Temperature);//放入应用上下文
}
out.println("<HTML><HEAD><TITLE>气温更新 "
+ "</TITLE></HEAD>");
out.println("<BODY><TABLE border=\"0\" width=\"100%\"><tr>");
out.println("<td align=\"left\" valign=\"bottom\">");
out.println("<H1>当前气温</H1></td></tr></TABLE>");
out.print("<FORM ACTION=\"adminTemperature");
//out.println(response.encodeURL("adminTemperature"));
out.println("\" METHOD=\"POST\">");
out.println("当前气温（摄氏度）");
out.println("<INPUT TYPE=\"text\" NAME=\"temperature\" "
+ "VALUE="+Temperature+">");
out.println("<INPUT TYPE=\"Submit\" NAME=\"btn_submit\" "
+ "VALUE=\"更新\">");
out.println("</FORM></BODY></HTML>");
}
protected void doPost(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=request.getParameter("temperature");
// 将更新后的气温信息放入上下文
getServletConfig().getServletContext().setAttribute("Temperature",Temperature);
out.println("<HTML><HEAD><TITLE>气温更新 "
+ "</TITLE></HEAD>");
out.println("<BODY>");
out.println("当前气温："+Temperature+"摄氏度");
out.println("</BODY></HTML>");
}
}
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