Java Bean class with examples of session tracking, implicit objects, el, jstl, mvc, custom tags, file upload, file download, interview questions etc. Simple Example for using JavaBeans in JSP Introduction: JavaBeans component design conventions govern the properties of the class. EJB Tutorial for Beginners - Learn EJB in simple and easy steps starting from basic to advanced concepts with examples including Environment Setup, Application Server. A knowledgebase on Java Beans with a comprehensive collection of Java Beans tutorials, Java Beans sample code and articles on Java Beans. For example, a program may contain both a bean representing a company's employees. Developing JavaBeans is very simple, because a lot of behavior. JSP JavaBeans - Learning JSP (Java Server Pages) in simple and easy steps using this beginner's tutorial containing basic to advanced knowledge of Java JSP. Creating JavaBean Property Editors. String property editors are fairly simple to program. Creating a Simple Web Application Using a My. SQL Database. Written by Troy Giunipero. This document describes how to create a simple web application that connects to a My. SQL. database server. It also covers some basic ideas and technologies in web development. Java. Server Pages (JSP). Java. Server Pages Standard Tag Library. JSTL), the Java Database. Connectivity (JDBC) API, and two- tier, client- server architecture. This tutorial. is designed for beginners who have a basic understanding of web development and are. My. SQL database. My. SQL is a popular open source database management. The table data used in that tutorial is contained in. This SQL file creates two tables, Subject. Counselor, then populates them with sample data. If needed, save this. Net. Beans IDE and run it on the My. SQL database. named My. New. Database. Contents. To follow this tutorial, you need the following software and resources. Notes: The Java download bundle of the Net. Beans IDE enables you to install the Glass. Fish server. In this tutorial, a. Java web application communicates directly with a My. SQL database using the. Java Database Connectivity API. Essentially, it is the. My. SQL Connector/J JDBC. Driver that enables communication between the Java code understood by the. Glass. Fish server), and any content in SQL, the language understood. My. SQL). The application you build in this tutorial involves the creation of two JSP pages. The two database tables. Subject and Counselor, are contained in the My. SQL. database, My. New. Database, which you create by completing the. Connecting to a My. SQL Database tutorial. It retrieves data from the Subject. When. the user submits his or her selection in the welcome page's HTML form, the submit. Again, the JSTL. code within the page initiates a query on My. New. Database. This time, it. Subject and Counselor tables. In order to implement the scenario described above, you develop a simple application. IFPWAFCAD, The International Former Professional. Wrestlers' Association for Counseling and Development. Creating a New Project. Begin by creating a new Java web project in the IDE: Choose File > New Project (Ctrl- Shift- N; . Select the Java Web category, then select Web Application. The standard project uses an IDE- generated Ant. In Project Name, enter IFPWAFCAD. Also, specify the location. The Glass. Fish server displays in the Server drop- down. Java version of the Net. Beans IDE. If you want to use a different server for this project. Add button located next to the Server drop- down field, and register. IDE. However, working with servers other than the Glass. Fish server. is beyond the scope of this tutorial. In the Java EE Version field, select Java EE 5. However, this tutorial demonstrates how to declare a. Java EE 6 or Java EE 7, so you can set the project version to Java EE 5. Note. You could equally set the project version to Java. EE 6 or Java EE 7 and then create a web. The IDE creates a project template for the entire application, and opens. JSP page (index. jsp) in the editor. The index. jsp file. Preparing the Web Interface. Begin by preparing the welcome (index. The welcome page implements an HTML form that is used to capture user data. Both pages. implement an HTML table to display data in a structured fashion. In this section, you also. Setting up the welcome page. Confirm that index. If the file is not already. Web Pages node in the. IFPWAFCAD project in the Projects window. In the editor, change the text between the < title>. IFPWAFCAD Homepage. Change the text between the < h. Welcome. to IFPWAFCAD, the International Former Professional Wrestlers' Association. Counseling and Development! Open the IDE's Palette by choosing Window > Palette (Ctrl- Shift- 8. Hover your pointer over the. Table icon from the HTML category and note that the default code snippet. To do so, place your. HTML form (. . ) icon in the Palette. In the Insert Form dialog, type in response. Action text field, then click OK. You can either use. Palette to do this, or invoke the editor's code completion as illustrated in. In the Insert Button dialog, enter submit for. Label and Name text fields, then click OK. To format your code, right- click in the editor and choose Format. Alt- Shift- F; Ctrl- Shift- F on Mac). Your code is automatically formatted. Welcome to < strong> IFPWAFCAD< /strong> , the International Former. Professional Wrestlers' Association for Counseling and Development! When you do this, the JSP page is automatically. The IDE opens your default browser. Creating the response page. In order to prepare the interface for response. Note that most of the content that. JSP technology. The New JSP File dialog opens. In the JSP File Name field, enter response. Note that Web Pages. Location field, meaning that the file will. This is the same. Accept any other default settings and click Finish. A template for the. The page compiles, is deployed to the Glass. Fish server. and opens in your default browser. Creating a stylesheet. Create a simple stylesheet that enhances the display of the web interface. This. tutorial assumes that you understand how style rules function, and how they affect. HTML elements found in index. Open the New File wizard by pressing the New File (. IDE's main toolbar. Select the Web category, then select. Cascading Style Sheet and click Next. Type style for CSS File Name and click Finish. The IDE creates. an empty CSS file and places it in the same project location as. Note that a node for. Projects. window, and the file opens in the editor. In the editor, add the following content to the style. Creating a new connection for each. To remedy this, numerous connections are created. Any incoming requests that require access to the. Likewise. when a request is completed, the connection is not closed down, but returned to the. After preparing the data source and connection pool for the server, you then need to. This is typically done by creating. Finally. you need to ensure that the database driver (My. SQL Connector/J JDBC Driver) is accessible. Important: From this point forward, you need you. My. SQL database instance named My. New. Database. set up that contains sample data provided in. If you have not already done this, or if you need help. Connecting to a My. SQL Database. before proceeding further. Also, your database needs to be password- protected to create a data source and. Glass. Fish server in this tutorial. If you are using the default My. SQL root. account with an empty password, you can set the password from a command- line prompt. To set your password. My. SQL installation's bin. UPDATE mysql. user SET Password = PASSWORD('nbuser'). WHERE User = 'root'. FLUSH PRIVILEGES; For more information, see the official My. SQL Reference Manual. Securing. the Initial My. SQL Accounts. Setting up a JDBC data source and connection pool. Referencing the data source from the application. Adding the database driver's JAR file to the server. Setting up a JDBC data source and connection pool. The Glass. Fish Server Open Source Edition contains Database Connection Pooling (DBCP). To take advantage of this, you need to. JDBC. (Java Database Connectivity) data source for the server which your. For more information on JDBC technology, see. The. Java Tutorials: JDBC Basics. You could configure the data source directly within the Glass. Fish server Admin Console. When the application is deployed, the. The following steps demonstrate how to declare a connection pool, and a data source. The Net. Beans JDBC Resource wizard allows you. Open the New File wizard by pressing the New File (. IDE's main toolbar. Select the Glass. Fish server category, then select. JDBC Resource and click Next. In step 2, General Attributes, choose the Create New JDBC Connection Pool option. JNDI Name text field, type in jdbc/IFPWAFCAD. The JNDI API provides a uniform way for. For more information, see. The JNDI Tutorial. Optionally, add a description for the data source. For example, type in. Accesses the database that provides data for the IFPWAFCAD application. Click Next, then click Next again to skip step 3, Additional Properties. In Step 4, type in Ifpwafcad. Pool for JDBC Connection Pool Name. Therefore, you need to. My. New. Database database. You can verify what connections have been created by. Services window (Ctrl- 5; . The wizard generates a glassfish- resources. In the Projects window, you can open the glassfish- resources. Server Resources node and note that, within the < resources>. To confirm that a new data source and connection pool are indeed. Glass. Fish server, you can deploy the project to the server, then locate. IDE's Services window: In the Projects window, right- click the IFPWAFCAD project node and. Deploy. The server starts up if not already running, and the project. Open the Services window (Ctrl- 5; . Note that the new data source and. Referencing the data source from the application. You need to reference the JDBC resource you just configured from the web application. For example, they. Note. If you specified Java EE 6 or Java EE 7 as the Java version when you. Web > Standard Deployment Descriptor in the New File wizard. Perform the following steps to reference the data source in the application's deployment. In the Projects window, expand the Configuration Files folder and double- click. Click the References tab located along the top of the editor. Expand the Resource References heading and click Add to open the Add Resource Reference dialog. For Resource Name, enter the resource name that you gave when configuring the. IFPWAFCAD). Type javax. Connection. Pool. Data. Source in the Resource Type field. The new resource is now listed under the Resource References heading. To verify that the resource is now added to the web. Source tab located along the top of the editor. Notice. that the following < resource- ref> tags are now included. Ordinarily, you would need to locate your. Fortunately, the IDE's server management is able to detect at deployment whether. JAR file has been added - and if not, it does so automatically. Writing a Simple Java. Bean. Beans are designed above all to be simple. This can be done.
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