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152 IBM WebSphere Application Server - Express V5.0.2 Developer Handbook
Chapter 6. Accessing databases This chapter provides information on accessing databases and using the information in Web pages. The following topics will be discussed: ► Java Database Connectivity (JDBC) overview ► Working with databases in Studio Site Developer Runtime database access will be discussed in Chapter 13, “Deploying applications” on page 455. 6 Note: This chapter assumes that you have installed a database product. The example assumes that you have installed IBM DB2 on the Studio Site Developer system. Assuming that the development machine, the database server machine, and the application server machine are three separate physical machines, you will need the following: ► Database server: Must have a database product installed ► Development machine (with Studio Site Developer): Must have access to database drivers ► Server machine (with Express Application Server): Must have access to database drivers © Copyright IBM Corp. 2003 153
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IBM WebSphere Application Server -
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Take Note! Before using this inform
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2.4.3 JavaServer Pages. . . . . . .
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8.3 Using JSPs in the Online Catalo
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13.1.1 Configuration and management
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16.5.1 Adding JAAS authentication t
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xii IBM WebSphere Application Serve
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Trademarks The following terms are
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Information Systems. His areas of e
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xviii IBM WebSphere Application Ser
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1.1 What is IBM WebSphere Applicati
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► A Web container ► Web service
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1.1.7 Roles and responsibilities In
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► Migrating Applications from IBM
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1.3 Bringing up Studio Site Develop
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illustrates techniques for internat
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Figure 1-4 Customer service example
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From a lower-level perspective, we
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2.1 Design considerations e-busines
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Note: WebSphere Application Server
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Note: WebSphere Application Server
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Actors can be identified by asking
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The maintain inventory use case has
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Input Page (View) Display Page (Vie
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In the following sections, we discu
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Figure 2-9 Dependencies allowed in
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2.4.4 Tag libraries ► Separation
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2.4.7 Struts Struts is an open-sour
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2.5.2 Indexes Third normal form In
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CUSTOMER CUSTOMER_ID :CHAR(10) CUST
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42 IBM WebSphere Application Server
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3.1 The workspace Studio Site Devel
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Figure 3-2 Compare with Local Histo
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Shortcut bar Figure 3-4 Web perspec
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3.2.2 Using fast views 1. From the
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New icon Figure 3-6 Designating a v
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3.3 Finding help ► Select a defau
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The online help is laid out in an e
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4.1 Enterprise application An enter
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Elements contained within a Web app
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► A set of initialization paramet
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Some elements of Example 4-1 on pag
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Although this wizard allows you to
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Figure 4-4 Creating a Web Project 5
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► WebContent: The location of all
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76 IBM WebSphere Application Server
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5.1 HTML support in Studio Site Dev
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Project Navigator view The Project
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2. From the Thumbnails view, drag t
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Colors view Figure 5-5 Setting colo
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Palette view The Web tools Palette
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► Double-Click Support: you can d
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Figure 5-9 Servers view When a serv
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Tip: When you place the cursor with
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Important: Using Web Site Designer
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Important: If a Web page icon has b
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Item Sub Item Category Description
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Item Sub Item Category Description
Page 122 and 123: Item Sub Item Category Description
Page 124 and 125: Figure 5-16 Associated page icon Pa
Page 126 and 127: Inserting a navigation trail You ca
Page 128 and 129: Example 5-1 spec.html [ < !-- site
Page 130 and 131: An example of a page template you w
Page 132 and 133: d. Select HTML or XHTML as the Mark
Page 134 and 135: header.html menu.html Figure 5-20 W
Page 136 and 137: 5.1.7 Adding tables, links, text, a
Page 138 and 139: Figure 5-23 Adding a link These val
Page 140 and 141: 5.1.9 Working with style sheets Sty
Page 142 and 143: 5. Select the Link radio button fro
Page 144 and 145: the WebArt Gallery tab and the Gall
Page 146 and 147: Figure 5-27 Using the WebArt Design
Page 148 and 149: Figure 5-29 Grouping objects You wi
Page 150 and 151: Figure 5-30 Type of frames Creating
Page 152 and 153: The animation is played starting wi
Page 154 and 155: Figure 5-36 WebSphere Studio Animat
Page 156 and 157: 3. To add our company name to the W
Page 158 and 159: Figure 5-39 Set Selector of New Sty
Page 160 and 161: Figure 5-41 Add Style dialog 17.Cli
Page 162 and 163: Figure 5-44 WebSphere Studio Art De
Page 164 and 165: Figure 5-46 Opening Web Site Design
Page 166 and 167: Figure 5-49 Creating an HTML page 7
Page 168 and 169: Figure 5-51 index.html opened in Pa
Page 170 and 171: Figure 5-53 Runtime of index.html 1
Page 174 and 175: 6.1 Java Database Connectivity (JDB
Page 176 and 177: Using databases in an application i
Page 178 and 179: 6.2.2 Creating the database Althoug
Page 180 and 181: 3. This will open the The New Datab
Page 182 and 183: Note that the class location points
Page 184 and 185: Figure 6-7 Create a schema 2. Enter
Page 186 and 187: SHIPPING_ORDER table The SHIPPING_O
Page 188 and 189: Figure 6-9 Create the table columns
Page 190 and 191: The next logical step is to create
Page 192 and 193: Figure 6-13 Execute the DDL - step
Page 194 and 195: To access the DB Output view: 1. Cl
Page 196 and 197: Java package: During the wizard you
Page 198 and 199: Note: You can use this same process
Page 200 and 201: Figure 6-20 Select the tables 9. Mo
Page 202 and 203: Figure 6-22 Database select conditi
Page 204 and 205: Figure 6-24 The generated SQL state
Page 206 and 207: Figure 6-26 Defining the controller
Page 208 and 209: Figure 6-27 Design the input form 7
Page 210 and 211: Figure 6-28 Design the master view
Page 212 and 213: Figure 6-30 Renaming the Web pages
Page 214 and 215: PRICE ASC This does two things.
Page 216 and 217: In order to run the application usi
Page 218 and 219: ► How credentials are passed to t
Page 220 and 221: 6.2.9 Testing We have not looked at
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Figure 6-36 Select database and dri
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Figure 6-38 Finished JDBC 8. With t
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Figure 6-40 Data source information
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Figure 6-41 JDBC connection paramet
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Figure 6-43 Server variables page 1
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SQL statement you want to build fro
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214 IBM WebSphere Application Serve
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7.1 Servlet overview The servlet me
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The service() method is called with
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7.1.3 Servlets in an enterprise app
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Figure 7-3 Package wizard 7. Click
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7.2.2 Web perspective The Web persp
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Figure 7-6 Content assist Content a
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Figure 7-8 Quick Fix Outline view A
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Figure 7-11 Details - URL Mappings
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Figure 7-17 WebSphere extensions 7.
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Figure 7-19 Servlet wizard - screen
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Figure 7-21 Servlet wizard - screen
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Get data from HTML form String user
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7.4 References Some additional refe
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8.1 JSP overview In the early days
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In fact, in WebSphere’s JSP imple
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8.1.3 JSP 1.2 elements The JSP 1.2
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Directives Directives give a way to
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A point of note concerns the sessio
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Note: After deployment to a server,
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The syntax for expression tags is:
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The include action tag works in fas
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Note: You would not have the conten
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The list you see is relevant to the
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Figure 8-7 Outline view Palette vie
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5. You have three options for proce
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In this example, we will be buildin
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Figure 8-11 Adding tag files For ou
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Figure 8-13 Add the JSP to web.xml
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INSERT INTO DB2ADMIN.ITEM( ITE
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9.1 Custom tag library (taglibs) co
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9.1.2 When to use ► Controller lo
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These are: - TagExtraInfo: Provides
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This variable will store the name a
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The TLD contains two main elements,
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It is possible to avoid the need to
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9.2 Studio Site Developer and tag l
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Figure 9-3 Importing a tag library
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3. From the first Import window sel
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Figure 9-7 Adding the Validtag tagl
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9.2.3 Snippets view The Snippets vi
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Page tag library (from Jakarta) The
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Tip: If you want to see how the tag
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Each taglib is different and will h
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9.3.2 Step 2: Adding a taglib direc
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2. Select JSP- > Insert Custom... f
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As you are working with taglib code
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10.1 XML overview 10.1.1 XML markup
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Welcome to the ITSO SG24-6555
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10.1.4 Validation A DTD identifies
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It is worth noting that XSDs can be
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Note that the XSD file has to be a
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► Create XML documents from DTDs,
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10.2.2 Wizards Figure 10-3 XML pers
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XSL wizard This is a tool for creat
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Figure 10-4 XML editor The XML edit
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Figure 10-5 Using the XML schema ed
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When you first create a new DTD fro
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10.3 Using XML in the Online Catalo
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Example 10-1 FeaturedItem SQL state
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7. On the next page, select the Cre
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NAME DESCRIPTION PRICE
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Figure 10-13 Libraries tab 5. Click
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5. Verify that the Public modifier
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import java.util.*; import java.net
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Placeholder for xslContent // //Add
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if (paramValues != null) paramValue
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xslContent += ""; xslContent += "";
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Figure 10-18 Web site diagram 6. Cl
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11.1 Web services overview What is
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Service Requestor Internet Figure 1
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► UDDI (universal description, di
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Encoding rules Encoding rules defin
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service. A binding template points
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More information The Web site of th
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Code Generation The Code Generation
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Using the WSDL editor, you can do t
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11.3 Using Web services in the Onli
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Figure 11-8 Web services page a. Ve
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Figure 11-10 Web service selection
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Figure 11-12 Web service test page
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- Proxy: The proxy class makes the
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► WSDL 1.1 specification at: http
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12.1 Struts overview Struts is an o
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When a browser submits an HTML form
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When initialized, the action servle
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Note: Once Struts support has been
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3. Select Add Struts support and JS
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Struts tools You can set the follow
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► Evaluate conditional logic tags
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► Graphical connection format Spe
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► Forwards: A Struts forward is a
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Item Parent Function Icon Draw All
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12.2.5 Wizards To use an action, se
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Figure 12-11 Action wizard - In the
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- If you want to specify a form bea
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- If you want to reuse an existing
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g. If you want to create method stu
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c. Specify the name of the Java pac
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10.On the Design the Form page, you
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Note: The Exception wizard can also
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5. Type the name of the new Struts
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d. If you want to associate the Web
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12.2.8 Data Mappings view The Strut
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Note: We did not follow this sample
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Note: The Web diagram file (*.gph)
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Important: Notice that the icons ar
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Important: Notice that the connecti
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You will notice that there is a war
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Example 12-5 Adding a html text tag
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23.Save your changes and exit the P
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Admin2 page The admin2.jsp page wil
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Figure 12-31 Creating an ActionForm
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The method returns errors if either
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Example 12-13 LoginAction class pub
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Figure 12-35 Local forwards for the
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Example 12-14 LogoutAction class pu
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Important: If you use the Struts fr
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The ActionServlet handles the reque
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13.1 Application server overview We
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Application developer Internet user
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Note: The Web perspective also cont
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13.3 Defining servers and server co
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Figure 13-6 Creating servers and se
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3. Update the server configuration
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13.4.2 Publishing an application to
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Note: If you have not changed the s
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Figure 13-13 Check the console for
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Tip on setting a server preference:
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The following are the steps require
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Figure 13-18 Define the remote serv
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Figure 13-20 Defining the copy sett
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Figure 13-21 Deployed application f
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The server configuration can be ope
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► Trace: Allows you to enable Web
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Note: You can also start the server
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3. Enter the EAR file name to expor
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Example 13-2 IBM Agent settings
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14.1 Debugging in the Web perspecti
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Figure 14-2 500 page error These er
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14.1.4 Editors Note: The Tasks view
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► Standard output: Default color
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Figure 14-7 Debug perspective Break
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Note: For additional information on
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Figure 14-12 Breakpoint properties
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Figure 14-13 Setting a breakpoint i
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Note: For additional information ab
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Figure 14-17 Breakpoint view 14.3.3
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15.1 Team development with CVS CVS
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15.2 Team environment using Studio
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d. Select the connection type (auth
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Note: When you share a project you
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15.4.2 Copy (commit) the project to
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It makes sense to do this when you
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Figure 15-5 Viewing the project ver
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15.6 Working with the team using th
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Figure 15-8 Working with conflicts
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► Current change: In the Text Com
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If there is a conflict, use the Tex
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► Based on the project in your wo
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Tip: You can see existing branch na
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Developer 1 (maintenance developer)
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You will find the following informa
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When such a situation occurs, you w
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Figure 15-16 File (text) compare ed
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16.1 Terms Before starting this top
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Figure 16-1 Web module deployment d
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16.4 Securing applications with rol
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2. Define roles to represent a logi
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Figure 16-4 Add a role Define the c
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Figure 16-6 Adding a constraint 3.
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Assign a role to the constraint Wit
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Figure 16-10 Enterprise application
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Tip: If you are using Internet Expl
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} // get the principal from the req
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Figure 16-13 JAAS security 6. Save
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This configuration allows access to
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Enabling security when installing D
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16.7 Using SSL with applications Th
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Note: For additional SSL informatio
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Wizard The Template application wiz
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Icon Name Description Web Pages Sec
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Figure A-3 Template application pre
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Figure A-5 Template selection 5. Cl
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Figure A-7 Application properties p
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Figure A-9 Database connection page
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- Up moves the widget up within the
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► Different versions of a feature
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Figure B-3 Install configuration vi
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Feature updates view The Feature up
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Figure B-7 Feature install wizard -
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Figure B-9 Feature install wizard -
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Figure B-11 Available updates searc
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Figure B-12 My computer folder 610
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Online Catalog sample application o
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SHIPPING_ORDER table The SHIPPING_O
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Homepage XST file calls Servlet Fig
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Item Folder/Package Description adm
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Catalog Item Folder/Package Descrip
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Note: To add items to the wishlist
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session.setAttribute("att1", o); ..
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Figure C-7 Web site diagram view of
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Figure C-8 theme folder Deployment
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Table C-11 Servlet login items Item
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Item Folder/Package Description Log
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Using the Web material The addition
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Update the FeaturedItemXMLServlet s
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15.On the Create a Resource Propert
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Other resources These publications
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► Java Authentication and Authori
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oker 357 BSF 32 buffer attribute 24
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host variable 184, 187 HTML 60 crea
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460, 466, 522, 527, 529, 540-541 XM
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Session 297-298, 300-301 Sslext 300
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XML schema editor graph view 328 xm
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IBM WebSphere Application Server -
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