context.xml 수정

<context>

<Resource name="jdbc/mysqlmulti"

auth="Container"

driverClassName="com.mysql.jdbc.Driver"

type="javax.sql.DataSource"

url="jdbc:mysql://localhost:3306/mymulti"

username="root"

password="manager2"

maxActive="500"

maxIdle="100"

maxWait="-1"/>

</context>

--프로젝트내/WEB-INF/web.xml--

<resource-ref>

  <description>Connection</description>

  <res-ref-name>jdbc/mysqlmulti</res-ref-name>

  <res-type>javax.sql.DataSource</res-type>

  <res-auth>Container</res-auth>

  </resource-ref>