CSET 4100 Assignment 3

Transcription

1 CSET 4100 Assignment 3 Simple Java Servlet Overview This assignment will focus on creating Java Servlets that can communicate with a data storage system. Read CH. 6 and CH. 7 in the Java servlets and JSP textbook. Server Info The server for this assignment is the following: course-server.exdsyslab.net Each of you has an account on that server. You should be able to SSH to the server. Please let me know ASAP if you have problems logging into the server. Deployment In your home directory, there is a directory named webapps. Create a directory named cset4100- hw3 inside the webapps directory. You will place all your JSP pages in the cset4100- hw3 directory. From your home directory: cd webapps mkdir cset4100- hw3 mkdir cset4100- hw3/web- INF mkdir cset4100- hw3/web- INF/lib mkdir cset4100- hw3/web- INF/classes mkdir cset4100- hw3/web- INF/classes/store Note: For security reasons the contents of your webapps directory will not be visible from the web. So you must navigate to the paths for your servlet that you define in your servlet mappings. Place the following jar files in the cset4100- hw3/web- INF/lib directory: cset4100- data- lib- v01.jar gson jar mongo jar

2 NOTE: DO NOT USE WAR FILES. For security reasons, we have chosen to keep your deployments based in your home directories and NOT via WAR files. Requirements You will be creating the first phase of an e- commerce web application. The first phase will require displaying a list of products. You will need to display the following for each product on this index page: The product name The category that the product belongs to The product s name should be a hyperlink to a product info page that will display the specific details for that product See the example output in Example 1. The links from your index page should lead to a product info page where the detailed specifics of a product should be displayed. See Example 2. Hint, the product ID is a unique way to identify and find a product. Your implementation should follow the Model- View- Controller paradigm. I have already provided you with a web.xml, basic servlet and JSP to use as a template for the index page. You will need to create any additional servlet and jsp pages necessary to implement the product info page. I have also provided you with a ProductInfo model class that is responsible for all the details of accessing the data storage system. See the Appendix. Make sure that you the servlet mapping for the index page uses the /products url pattern. I will use the URL below to access your application. As you can see from the examples, I do not require that you have artistically laid out or styled output but you do need to format the output with some structure. Example 1: Example output from index page: All Products Name: magnam - Blu-Ray Category: Movies

3 Name: molestiae porro Category: Home & Garden Name: minima a optio Category: Clothing & Shoes Name: molestiae Category: Computer Name: totam ut - DVD Category: Movies Name: architecto voluptatem - DVD Category: Movies

4 Example 2: Example Output from Product Info Page magnam - Blu-Ray aspect ratio: 2.39:1 rating: R format: Blu-Ray running time: 83.0 sku: 8cd700-bsg51qf-003 Description: Laborum quasi distinctio impedit et tenetur dolores. Fuga quibusdam quia est illum tempora sed. Dignissimos vel dicta aperiam et maiores aut repudiandae. Non corrupti eligendi eveniet et eum. Veritatis vel saepe aut et ab veniam nam. Dolor sed in voluptates porro odit. Voluptate ad deserunt est aut assumenda ut. Distinctio nihil in harum magni. Odio debitis tenetur assumenda. Nemo temporibus iusto omnis optio. Et voluptas similique voluptatem quo labore explicabo eos nisi. Ut commodi dolore voluptate et occaecati reiciendis natus. Omnis non sint laborum deserunt ad nemo. Enim veniam laborum ea temporibus dicta libero quos. Quia reiciendis maiores et quia quae. Id libero aperiam aut doloremque. Est reprehenderit a reiciendis et. Reprehenderit ea molestiae architecto ea autem exercitationem dignissimos. Velit et ipsa tenetur. Nostrum laborum culpa aut libero enim. Dolor corporis dolores iusto. Et est enim doloremque. Voluptatibus ducimus suscipit quasi et. Nesciunt autem delectus voluptates labore qui. Illo voluptates optio est et distinctio cupiditate. Veritatis sed voluptas nobis praesentium. Nostrum assumenda in mollitia consequatur quis vel. Sint quaerat rem quae. Assumenda eum voluptate consequuntur nemo soluta harum suscipit in. Cupiditate aut dolorem sed ratione tempore. Harum aliquam

5 iusto et. Qui est libero sint et ut maiores possimus velit. Excepturi consequuntur dolor commodi. Error rerum ex vero quaerat laboriosam cumque. Aut accusamus at sed repellat.

6 Appendix API for models.productinfo class: public static void initialize(string authid); public static ProductInfo findbyid(string id); public static List<ProductInfo> findall() public String getid(); public String getname(); public String getcategory(); public String getdescription(); public String getmetadata(); ProductIndexServlet.java package store; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.list; import models.productinfo; public class ProductIndexServlet extends HttpServlet { protected void doget(httpservletrequest request, HttpServletResponse response) throws ServletException, IOException { ProductInfo.initialize("wacosta"); List<ProductInfo> productlist = ProductInfo.findAll(); request.setattribute("productlist",productlist); String html_url = "/views/products/index.jsp"; String json_url = "/views/products/index_json.jsp"; String url = html_url;

7 if(request.getparameter("format")!= null && request.getparameter("format").equalsignorecase("json")){ url = json_url; } ServletContext context = getservletcontext(); RequestDispatcher dispatcher = context.getrequestdispatcher(url); dispatcher.forward(request,response); } } index.jsp <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" " <html> <head><title>products List</title></head> <body> <h1>all Products</h1> <%@ page import="models.productinfo" %> <%@ page import="java.util.list" %> <% List<ProductInfo> productlist = (List<ProductInfo>) request.getattribute("productlist"); %> <% for(productinfo product : productlist) {%> <p>name: <%= product.getname() %></p> <p>category: <%= product.getcategory() %></p> <hr/> <%}%> </body> </html> web.xml

8 <web-app xmlns=" xmlns:xsi=" xsi:schemalocation=" version="2.5"> <servlet> <servlet-name>productindex</servlet-name> <servlet-class>store.productindexservlet</servlet-class> </servlet> <servlet-mapping> <servlet-name>productindex</servlet-name> <url-pattern>/products</url-pattern> </servlet-mapping> </web-app>