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Now that you have created the data source to be used with the sample application, you might want to perform a quick test of it. In the sample, you will use the data source created in the preceding section to interact with the underlying database from within enterprise beans. However, you might use it from a servlet or a JSP page as well. So, in this section, you will test the data source with the help of a simple JSP page accessing the database data via that JDBC resource. Listing 7-1 shows the source code for such a JSP page. You can save this JSP page in a single file, say, testPage.jsp, putting it into any empty directory in your file system. Listing 7-1. A Simple JSP Page for Testing a JDBC Resource <%@ taglib uri="http://java.sun.com/jsp/jstl/sql" prefix="sql" %> <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <sql:query var="rslt" dataSource="jdbc/mysqlpool"> select isbn, title, quantity, price from dbsample.books </sql:query> <html> <head> <title>JDBC Connection Test</title> </head> <body> <h1>Available books:</h1> <c:forEach var="book" items="${rslt.rows}"> <b>Isbn:</b> ${book.isbn}<br/> <b>Title:</b> ${book.title}<br/> <b>Price:</b> $${book.price}<br/> <b>In stock:</b> ${book.quantity}<br/> <br/> </c:forEach> </body> </html> As you can see in the listing, the JSP page uses the jdbc/mysqlpool JDBC resource to connect to the underlying database and then access the books table, displaying the data stored in some fields of that table. Now that you have the JSP page file, you have to create the deployment descriptors required to deploy that page to the application server. Listing 7-2 shows what the source code for the web.xml deployment descriptor might look like. You need to store it in the WEB-INF subfolder of the project root directory (the one where you saved the testPage.jsp file shown in Listing 7-1). gs1 128 vb.net EAN- 128 VB . NET Control - EAN- 128 barcode generator with free VB ...
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VB.NET GS1-128 Barcode Generation Control Tutorial page illustrates how to generate GS1-128 barcodes in .NET Windows Forms / ASP.NET Web Application ... Listing 7-2. web.xml Deployment Descriptor Containing the resource-ref Element Declaring the Data Source Defined in the Application Server < xml version="1.0" encoding="UTF-8" > <web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <welcome-file-list> <welcome-file> testPage.jsp </welcome-file> </welcome-file-list> <resource-ref> <res-ref-name>jdbc/mysqlpool</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref> </web-app> Finally, you need to create the sun-web.xml runtime deployment descriptor containing the context root information for the web application being created. Listing 7-3 shows the source code for the sun-web.xml runtime deployment descriptor. Like web.xml, you need to store it in the WEB-INF folder. Listing 7-3. sun-web.xml Runtime Deployment Descriptor < xml version="1.0" encoding="UTF-8" > <!DOCTYPE sun-web-app PUBLIC "-//Sun Microsystems, Inc.// DTD Application Server 9.0 Servlet 2.5//EN" "http://www.sun.com/software/appserver/dtds/sun-web-app_2_5-0.dtd"> <sun-web-app error-url=""> <context-root>/testPage</context-root> </sun-web-app> The next step is to package the application so that it can be deployed to the application server. If you recall from 2 where you built a similar simple web application, you should change directory to the root directory of your application and then issue the following command: #jar cvf testdb.war. This should create the WAR archive that can be deployed to the application server. As you might recall from the discussion in 2, you have more than one choice when it comes to deploying a web application or EJB module to GlassFish. You might, for example, use the GlassFish s asadmin tool, issuing the following command: #asadmin deploy testdb.war winforms upc-a reader, save pdf in database c#, barcode generator for ssrs, ssrs code 39, winforms pdf 417 reader, how to use barcode in rdlc report vb.net ean 128 EAN - 128 VB . NET Control - EAN - 128 barcode generator with free VB ...
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