📄 calculate.java
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/*
* calculate.java
*
* Created on 2008年5月18日, 下午5:30
*/
package cal3;
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
* @author lu
* @version
*/
public class calculate extends HttpServlet {
/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
/* TODO output your page here
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet calculate</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet calculate at " + request.getContextPath () + "</h1>");
out.println("</body>");
out.println("</html>");
*/
int type =Integer.parseInt(request.getParameter("type"));
double data1 =Double.parseDouble(request.getParameter("data1"));
double data2 =Double.parseDouble(request.getParameter("data2"));
String result;
switch(type)
{
case 1:result =data1+"+"+data2+"="+(data1+data2);break;
case 2:result =data1+"-"+data2+"="+(data1-data2);break;
case 3:result =data1+"*"+data2+"="+(data1*data2);break;
default:result =data1+"/"+data2+"="+(data1/data2);break;
}
out.println(result);
out.close();
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
/** Returns a short description of the servlet.
*/
public String getServletInfo() {
return "Short description";
}
// </editor-fold>
}
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