orderhelper.java

网络商店源代码用NetBeans6.1Beta开发

package util;

import model.*;
import java.io.*;
import java.util.*;
import java.sql.Timestamp;
import java.text.*;
import org.apache.commons.lang.StringEscapeUtils;

public class OrderHelper {
  public static void printOrder(Order o, ProductsBean pb, Writer out) throws Exception {
    Integer id = o.getId();
    String user = o.getUser();
    List<OrderItem> items = o.getItems();
    Timestamp created = o.getCreated();
    
    String created_fmt = (created == null) ? "--" :
                          DateFormat.getDateTimeInstance().format(created);

    out.write(
       "<table border=\"1\" cellpadding=\"5px\">" 
       + "<tr>" 
       + "<td colspan=\"3\">" 
       + "order id: " + (id != null ? id : "--") 
       + ", user: " + user 
       + "<br />" 
       + "created: " + created_fmt
       + "</td>" 
       + "</tr>" 
       + "<tr><td>product</td> <td>quantity</td> <td>unit price</td></tr>");

    float total = 0;
    for (OrderItem item: items) {
      float flt_price = item.getPrice().floatValue();
      String fmt_price = NumberFormat.getCurrencyInstance().format(flt_price);
      String descrip = pb.find(item.getProdId()).getDescription();
      out.write(
        "<tr>"
        + "<td>" + StringEscapeUtils.escapeHtml(descrip) + "</td>"
        + "<td>" + item.getQty() + "</td>"
        + "<td>" + fmt_price + "</td>"
        + "</tr>"
      );
      total += item.getQty() * flt_price;
    }
    
    String total_fmt = NumberFormat.getCurrencyInstance().format(total);
    
    out.write(
      "<tr>"
      + "<td colspan=\"3\">"
      + "total: " + total_fmt
      + "</td>"
      + "</tr>"
      +"</table>" 
    );
  }
}