|
1
6
7 package com.sun.javaee.blueprints.autoid;
8
9 import java.io.*;
10 import java.util.*;
11 import java.text.*;
12
13 import javax.servlet.*;
14 import javax.servlet.http.*;
15 import javax.annotation.*;
16 import javax.persistence.*;
17
18 import com.sun.javaee.blueprints.autoid.model.*;
19
20
21
25 public class CatalogServlet extends HttpServlet {
26 private CatalogFacade cf;
27 private ServletContext context;
28 private Map nameSpace;
29
30 public void init(ServletConfig config) throws ServletException {
31
32 context = config.getServletContext();
33 cf = (CatalogFacade)context.getAttribute("CatalogFacade");
34 initPathMapping();
35 }
36
37 public void destroy() {
38 cf = null;
39 }
40
41
42 public void doGet(HttpServletRequest request,
43 HttpServletResponse response)
44 throws ServletException, IOException {
45 response.setContentType("text/html");
46 String  responseURL = null;
47 String fullURL = request.getRequestURI();
48
49 String selectedURL = null;
51 int lastPathSeparator = fullURL.lastIndexOf("/") + 1;
52 if (lastPathSeparator != -1) {
53 selectedURL = fullURL.substring(lastPathSeparator, fullURL.length());
54 }
55 responseURL = getResponseURL(selectedURL);
56 try{
57 if (selectedURL.equals("additem.do")) {
58 String desc = request.getParameter("item_desc");
59 String name = request.getParameter("item_name");
60 String listPrice = request.getParameter("item_listprice");
61 String unitCost = request.getParameter("item_unitcost");
62 Item item = new Item();
63 item.setName(name);
64 item.setDescription(desc);
65 item.setListPrice(new Float (listPrice));
66 item.setUnitCost(new Float (unitCost));
67 cf.addItem(item);
68 request.setAttribute("result", item.getItemID());
69 }
70 if (selectedURL.equals("finditem.do")) {
71 String id = request.getParameter("item_id");
72 Item item = cf.getItem(new Integer (id));
73 request.setAttribute("item", item);
74 }
75 if (selectedURL.equals("findallitems.do")) {
76 List items = cf.getAllItems();
77 request.setAttribute("items", items);
78 }
79 } catch (InvalidItemException ixe) {
80 System.err.println("CatalogServlet error: "+ixe);
81 request.setAttribute("error_message", ixe);
82 responseURL = getResponseURL("error.do");
83 } catch(NumberFormatException nfe){
84 System.err.println("CatalogServlet Number format exception: "+nfe);
85 request.setAttribute("error_message", nfe);
86 responseURL = getResponseURL("error.do");
87 }
88 context.getRequestDispatcher(responseURL).forward(request, response);
89 }
90 protected String getResponseURL(String url) {
91 return (String ) nameSpace.get(url);
92 }
93
94 protected void initPathMapping() {
95 nameSpace = new HashMap();
96 nameSpace.put("enteritemdetails.do", "/add.jsp");
97 nameSpace.put("enteritemid.do", "/search.jsp");
98 nameSpace.put("additem.do", "/result.jsp");
99 nameSpace.put("finditem.do", "/item.jsp");
100 nameSpace.put("findallitems.do", "/items.jsp");
101 nameSpace.put("error.do", "/error.jsp");
102 nameSpace.put("index.do", "/index.jsp");
103 }
104 }
105 |
Popular Tags |
Java API By Example, From Geeks To Geeks.