Getting Started with WebSphere Application Server

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78 Getting Started with WebSphere Application Server Community Edition Figure 4.16 - New a JSP file In the pop up window, input the JSP file name (dbdemo.jsp) as shown in Figure 4.17 and click Finish. Figure 4.17 – Input the JSP file name
Chapter 4 – Working with databases 79 2. An editor showing the new JSP file appears as shown in Figure 4.18. Change the title text to DBDemo. Figure 4.18 – The generated JSP file 3. In the JSP file, follow these steps to access the data in the database: a) Import some necessary database access java classes as shown in Listing 4.2. Listing 4.2 – Import the necessary java classes for database access b) Initialize a naming context to look up a data source as shown in Listing 4.3. In the lookup string, java:comp/env/ is the common prefix of the naming space, jdbc/DataSource is the logical name of the defined data source. Context initContext = new InitialContext(); DataSource ds = (DataSource)initContext.lookup("java:comp/env/jdbc/DataSource"); Listing 4.3 - Initializing a naming context and looking up a datasource c) Open the Web project descriptor file WEB-INF/web.xml, define the logical name as shown in Listing 4.4. jdbc/DataSource javax.sql.DataSource Container Shareable Listing 4.4 - The logical name defined in web.xml Then open WEB-INF/geronimo-web.xml, add some configurations to map the logical name to the physical name jdbc/demods as shown in Listing 4.5. The
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G E T T I N G S T A R T E D W I T H
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Notices This information was develo
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Trademarks IBM, the IBM logo, and i
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3.8 Exercises .....................
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9.3.2 Changing port numbers .......
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13 Preface Keeping your skills curr
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The DB2 on Campus book series 15
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18 Getting Started with WebSphere A
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1 Chapter 1 - Introduction to WebSp
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Introduction to WebSphere Applicati
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Introduction to WebSphere Applicati
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PART III - ADMINISTERING COMMUNITY
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10 Chapter 10 - Tuning a Community
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Chapter 10 - Tuning a Community Edi
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A Appendix A - Solutions to review
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Appendix A - Solutions to review qu
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B Appendix B - Up and running with
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Appendix B - Up and running with DB
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4. The following is performed by de
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C Appendix C - Using the sample cod
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Getting Started with WebSphere Application Server

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