src/servlet/OrderBookServlet.java

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package servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import util.Validate;
import bean.SelectBean;

public class OrderBookServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public OrderBookServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Validate vd = new Validate();
		String supplier = vd.getUnicode(request.getParameter("supplier"));
		String sql = "select * from books where supplier='"+supplier+"'";
		String [] args = {"id","name","author","publishing","price","storage","brief","types","sums","supplier","imgpath"};
		SelectBean sb = new SelectBean();
		ArrayList al = sb.select(sql, args);
		request.setAttribute("books", al);
		request.setAttribute("supplierid", supplier);
		RequestDispatcher rd=request.getRequestDispatcher("/order_add.jsp");
        rd.forward(request,response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request,response);
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occure
	 */
	public void init() throws ServletException {
		// Put your code here
	}