JNDI Configuration in Tomcat

Configuring JNDI in Tomcat requires writing a context.xml and put it in the META-INF directory of your application or can be put in the servere.xml file in conf directory of Tomcat server

For datasource, the context.xml looks like

<Context>
   <Resource name="jdbc/dbConnection" 
    auth="Container" 
    type="javax.sql.DataSource"
    driverClassName="com.mysql.jdbc.Driver" 
    url="j<url to database>" 
    username="user" 
    password="pwdt" 
    validationQuery="select 1" 
    removeAbandoned="true"
    removeAbandonedTimeout="120" 
    maxWait="60" 
    maxActive="20" 
    maxIdle="10" /> 
 </Context>

For connecting to mail server. (Resource element to be put inside the Context element).

<Resource 
      name="mail/Session" 
      auth="Container"
      type="javax.mail.Session" 
      mail.transport.protocol="smtp"
      mail.smtp.host="<Server name>" 
      mail.smtp.port="25"  />

For JMS connection. (Resource element to be put inside the Context element).

<Resource 
    name="jms/ConnectionFactory" 
    auth="Container"
    type="org.apache.activemq.ActiveMQConnectionFactory" 
    description="JMS Connection Factory"
    factory="org.apache.activemq.jndi.JNDIReferenceFactory"
    brokerURL="vm://localhost" 
    brokerName="LocalActiveMQBroker"  />