Configuring JNDI JDBC for Web App in Tomcat - jdbc

Question

I'm unable to figure out why JNDI JDBC data source is failing
context.xml in META-INF
<?xml version="1.0" encoding="UTF-8"?>
<Context reloadable="true">
<Resource auth="Container"
name="jdbc/BigByte"
type="javax.sql.DataSource"
driverClassName="com.ibm.as400.access.AS400JDBCDriver"
url="jdbc:as400://****.****/****;prompt=false;sort=language;sort language=ENU;sort weight=shared"
username="****"
password="****"
maxIdle="10"
maxActive="200"
maxWait="5"
removeAbandoned="true"
removeAbandonedTimeout="1200" />
</Context>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" 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">
*
*
*
<resource-ref>
<description>Big Byte DB Connection</description>
<res-ref-name>jdbc/BigByte</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Shareable</res-sharing-scope>
</resource-ref>
</web-app>
my test
DataSource ds = null;
try {
Context initCtx = new InitialContext();
NamingEnumeration<NameClassPair> list = initCtx.list("");
while (list.hasMore()) {
System.out.println(list.next().getName());
}
Context envCtx = (Context)initCtx.lookup("java:comp/env");
ds = (DataSource)envCtx.lookup("jdbc/BigByte");
Connection con = ds.getConnection();
PreparedStatement ps = con.prepareStatement(
"select * from XAAQREV1 where AQABVN = ?");
ps.setString(1, "*****");
ResultSet rs = ps.executeQuery();
while (rs.next()) {
String uid = rs.getString("AQABVN");
System.out.println(uid);
}
} catch (NamingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
My console output
2017-09-28 10:13:26,482/: [http-nio-8080-exec-10/:ERROR] - Cannot find the class org/apache/naming/LocalStrings.class
2017-09-28 10:13:26,619/: [http-nio-8080-exec-10/:ERROR] - Cannot find the class org/apache/naming/LocalStrings_en.class
2017-09-28 10:13:26,775/: [http-nio-8080-exec-10/:ERROR] - Cannot find the class org/apache/naming/LocalStrings_en_US.class
2017-09-28 10:13:28,091/: [http-nio-8080-exec-10/:ERROR] - Cannot find the class org/apache/juli/JdkLoggerConfig.class
javax.naming.NameNotFoundException: Name [java:comp/env] is not bound in this Context. Unable to find [java:comp].
at org.apache.naming.NamingContext.lookup(NamingContext.java:824)
at org.apache.naming.NamingContext.lookup(NamingContext.java:172)
at javax.naming.InitialContext.lookup(Unknown Source)
at webx0001.XAC3DFR_ObFnc.ObRun(XAC3DFR_ObFnc.java:189)
...
When I step through my test, the NamingEnumeration list has no elements.
What are the console messages about missing classes about?
What am I missing?

Answer 1

I was not missing anything.
My project uses a Custom ClassLoader that breaks Tomcat JNDI.
I verified that with a simple servlet in a simple project.