jndi tomcat6 数据连接池

数据库是oracl10g的版本  tomcat 6
1.项目中web/WEB-INF/lib 有驱动包 ojdbc14
2.在tomcat中 server.xml文件

<!-- Global JNDI resources
       Documentation at /docs/jndi-resources-howto.html
  -->
  <GlobalNamingResources>
    <!-- Editable user database that can also be used by
         UserDatabaseRealm to authenticate users
    -->
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
    <Resource name="jdbc/jspdev" auth="Container"
              type="javax.sql.DataSource" driverClassName="oracle.jdbc.driver.OracleDriver"
              url="jdbc:oracle:thin:@192.168.1.188:1521:orcl"
              username="myf" password="myf" maxActive="20" maxIdle="10"
              maxWait="-1"/>               
  </GlobalNamingResources>

3 。在server.xml <Host>下 把jndi资源引用到某一项目的context中去
<Context path="" docBase="E:/tomcat/apache-tomcat-6.0.20/webapps/myf"  debug="0" reloadable="true" crossContext="true">
<ResourceLink name= "jdbc/jspdev" global= "jdbc/jspdev" type= "javax.sql.DataSourcer"/>
</Context>

 

4.项目中  web.xml 加入

 <resource-ref>
   <description>DB Connection</description>
   <res-ref-name>jdbc/jspdev</res-ref-name>
   <res-type>javax.sql.DataSource</res-type>
   <res-auth>Container</res-auth>
  </resource-ref>

 

5.测试代码

public class ConnectionManager {
   
    public static Connection getConnection() throws DaoException {
     /*
        Connection conn = null;
        try {
         try {
    Class.forName("oracle.jdbc.driver.OracleDriver");
   } catch (ClassNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
            conn = DriverManager.getConnection("jdbc:oracle:thin:@192.168.1.188:1521:orcl", "myf", "myf");
        } catch (SQLException e) {
            throw new DaoException("can not get database connection", e);
        }
        return conn;*/
     
     Connection conn = null;

  try {   
   conn = MyfDataSource.getDataSource().getConnection();  
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return conn;
    }
}

 

public class MyfDataSource{
 private static DataSource ds = null;
 private MyfDataSource(){
  
 }
 public static synchronized DataSource getDataSource(){
  if(ds==null){
   InitialContext initContext;
   try {
    initContext = new InitialContext();   
    Context envContext  = (Context)initContext.lookup("java:/comp/env");
    ds = (DataSource)envContext.lookup("jdbc/jspdev");
   } catch (NamingException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   
  }
  return ds;
 }
 
}

 

 

参考http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html#Oracle_8i,_9i_&_10g