📄 addcartservlet.java
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package com.jpioneer.application.shoppingcart.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;
import javax.servlet.http.HttpSession;
import com.jpioneer.application.shoppingcart.service.ShoppingCartService;
import com.jpioneer.application.shoppingcart.service.impl.ShoppingCartServiceImpl;
public class AddCartServlet extends HttpServlet {
/**
* Constructor of the object.
*/
public AddCartServlet() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out
.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print(" This is ");
out.print(this.getClass());
out.println(", using the GET method");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String id=request.getParameter("id");
String name=request.getParameter("productname");
double price=Double.parseDouble(request.getParameter("price"));
double quantity=Double.parseDouble(request.getParameter("quantity"));
HttpSession session=request.getSession();
ShoppingCartService shopping=null;
if(session.getAttribute("shoppingCart")!=null){
shopping=(ShoppingCartServiceImpl)session.getAttribute("shoppingCart");
}else{
shopping=new ShoppingCartServiceImpl();
}
try{
shopping.addItem(id,name,price,quantity);
session.setAttribute("shoppingCart",shopping);
request.getRequestDispatcher("/ListProductsServlet").forward(request,response);
}catch(Exception e){
e.printStackTrace();
}
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}
}
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