SCWCD 準備

出題範囲

http://suned.sun.co.jp/JPN/certification/compobj.html

開発、検証環境

JDK

• http://java.sun.com/j2se/1.5.0/ja/download.html
• http://java.sun.com/javaee/downloads/index.html

Document

• http://java.sun.com/j2ee/1.4/docs/api/index.html

XML Schemas for J2EE Deployment Descriptors

http://java.sun.com/xml/ns/j2ee/

TOMCAT

http://tomcat.apache.org/

document

http://tomcat.apache.org/tomcat-5.5-doc/index.html

JNDI Datasource

http://tomcat.apache.org/tomcat-5.5-doc/jndi-datasource-examples-howto.html

• 準備
  • $CATALINA_HOME/common/lib にJDBCドライバを置く
  • Tomcatは、*.jar にしか対応してないので、*.zip なら、リネーム

• server.xml の編集
  • $CATALINA_HOME/conf/server.xml
  • Web アプリケーションの Context に Resource を設定

<Host name="localhost" 
         :
   <Context path="/DBTest" docBase="DBTest"
     debug="5" reloadable="true" crossContext="true">
     <Resource name="jdbc/myoracle" auth="Container"
               type="javax.sql.DataSource"  
               driverClassName="oracle.jdbc.OracleDriver"
               url="jdbc:oracle:thin:@127.0.0.1:1521:mysid"
               username="scott" password="tiger" maxActive="20" maxIdle="10"
               maxWait="-1"/>
   </Context>
         :
</Host>

• web.xml の設定

<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
  http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
  version="2.4">
        :
  <resource-ref>
    <description>Oracle Datasource example</description>
    <res-ref-name>jdbc/myoracle</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
  </resource-ref>
       :
</web-app>

• コードサンプル

Context initContext = new InitialContext();
Context envContext  = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/myoracle");
Connectionconn = ds.getConnection();

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