addorderservlet.java

仓库管理系统

package edu.scau.order;

import java.io.IOException;
import java.io.PrintWriter;
import java.math.BigDecimal;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Enumeration;
import java.util.List;

import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.transaction.UserTransaction;

import edu.scau.database.DBUtil;
import edu.scau.order.persist.OrderCRUD;

public class AddOrderServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public AddOrderServlet() {
		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 {
		doPost(request, response);
	}

	/**
	 * 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 {
		// 解决中文乱码
		request.setCharacterEncoding("gb2312");
		response.setContentType("text/html, charset=gb2312");
		response.setCharacterEncoding("gb2312");

		PrintWriter out = response.getWriter();

		// 获取参数
		String number = request.getParameter("number");
		String customer = request.getParameter("customer");
		String bizDateStr = request.getParameter("bizDate");
		// 对参数类型进行转换
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
		java.util.Date bizDate = null;

		try {
			bizDate = sdf.parse(bizDateStr);
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			// e.printStackTrace();
		}
		// 获取表格体参数
		String[] names = request.getParameterValues("name");
		String[] qtys = request.getParameterValues("qty");
		String[] prices = request.getParameterValues("price");
		String[] amts = request.getParameterValues("amt");

		bizDate = new Date();

		// 实际业务处理 -数据操作
		OrderInfo orderInfo = new OrderInfo();
		orderInfo.setNumber(number);
		orderInfo.setCustomer(customer);
		orderInfo.setBizDate(bizDate);

		BigDecimal totalCost = new BigDecimal("0.0");
		List li = new ArrayList();
		// 关联表格体
		for (int i = 0; i < names.length; i++) {
			OrderItemInfo oi = new OrderItemInfo();
			oi.setName(names[i]);
			oi.setQty(Integer.parseInt(qtys[i]));
			oi.setPrice(new BigDecimal(prices[i]));
			oi.setAmt(new BigDecimal(amts[i]));
			totalCost = totalCost.add(new BigDecimal(amts[i]));
			li.add(oi);
		}

		orderInfo.setOrderItemInfos(li);
		orderInfo.setTotalCost(totalCost);

		OrderCRUD orderCRUD = new OrderCRUD();

		boolean isCreate = orderCRUD.createOrder(orderInfo);
		ServletContext context = getServletContext();

		if (isCreate) {
			RequestDispatcher dispatcher = context.getRequestDispatcher("//scm/addOrder.jsp");
			dispatcher.forward(request, response);
		} else {
			// 跳转页面 传递参数
			// String errorMsg = "订单创建失败！";
			// String url = "error.jsp?name=" +errorMsg;
			// response.sendRedirect("error.jsp?name="+java.net.URLEncoder.encode(errorMsg));

			String errorMsg = "订单创建失败！";
			request.setAttribute("name", errorMsg);
			RequestDispatcher dispatcher = context.getRequestDispatcher("//error.jsp");
			dispatcher.forward(request, response);

		}

	}

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

}