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Hongxin Technology & Trade Ltd. of Xiangtan City (abbr, HXTT)

HXTT ACCESS
HXTT Access and Tomcat 5.5
Fredrik Skånberg
2006-04-26 02:30:21.0
Hi!

I'm trying to create JNDI Datasource to a database in a Tomcat 5.5 environment. But I can't figure out how to do it. What am I doing wrong? I can access the database the normal way so it's nothing wrong with the database url and so.

I have put this in my context.xml:

maxActive="100" maxIdle="30" maxWait="10000"
username="" password="" driverClassName="com.hxtt.sql.access.AccessDriver"
url="jdbc:access:/e:/tmp/webtest.mdb"/>

In my web.xml I have this:


DB Connection
jdbc/dctest
javax.sql.DataSource
Container


And in a test servlet I use this:

Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
DataSource ds = (DataSource) envCtx.lookup("jdbc/dctest");
Connection conn = ds.getConnection();

But I receive an exception:

Cannot create JDBC driver of class '' for connect URL 'null'

What's wrong?

Regards,
Fredrik Skånberg, Sweden
Re:HXTT Access and Tomcat 5.5
HXTT Support
2006-04-26 10:17:34.0

maxActive="100" maxIdle="30" maxWait="10000"
username="" password="" driverClassName="com.hxtt.sql.access.AccessDriver"
url="jdbc:access:///f:/mdbfiles/aaa.mdb"/>



jdbc/testAccessPool1
javax.sql.DataSource
Container


If it cannot work normal,please tell us your version of tomcat.
I tested upper config at tomcat 5.5.9 and it work normal.
Re:HXTT Access and Tomcat 5.5
HXTT Support
2006-04-26 10:19:54.0
<!--context.xml--> 

<Resource name="jdbc/testAccessPool1" auth="Container" type="javax.sql.DataSource"

maxActive="100" maxIdle="30" maxWait="10000"

username="" password="" driverClassName="com.hxtt.sql.access.AccessDriver"

url="jdbc:access:///f:/mdbfiles/aaa.mdb"/>



<!--web.xml-->

<resource-ref>

<res-ref-name>jdbc/testAccessPool1</res-ref-name>

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

<res-auth>Container</res-auth>

</resource-ref>


If it cannot work normal,please tell us your version of tomcat.
I tested upper config at tomcat 5.5.9 and it work normal.
Re:Re:Re:HXTT Access and Tomcat 5.5
Fredrik Skånberg
2006-04-27 04:51:16.0
Hi!

I still can't get it to work. I have tried it on Tomcat 5.5.12 and 5.5.16.

I copied your example and used this in a servlet:

Context initCtx = new InitialContext();
Context envCtx = (Context) initCtx.lookup("java:comp/env");
DataSource ds = (DataSource) envCtx.lookup("jdbc/testAccessPool1");
Connection conn = ds.getConnection();

But when I run this I get this:

Cannot create JDBC driver of class '' for connect URL 'null'.

Where have you put Access_JDBC30.jar? In the applications WEB-INF/lib or in {Tomcat home}/common/lib or some place else?

/Fredrik
Re:Re:Re:Re:HXTT Access and Tomcat 5.5
HXTT Support
2006-04-27 06:51:31.0

I use tomcat 5.5.16 to test and it work normal.



You should put the Access_JDBC30.jar to the ${TOMCAT_HOME}/common/lib or else it will throw cannot not find the driver class "com.hxtt.sql.access.AccessDriver" exception.



You can download the http://www.hxtt.com/test/WebApplication1.war and put it to ${TOMCAT_HOME}/webapps directory and restart tomcat.

If you can view data from http://localhost/WebApplication1/index.jsp,the configuration is correct.



If not,can you tell us your JDK version?




Re: HXTT Access and Tomcat 5.5
Fredrik Skånberg
2006-04-27 08:30:27.0
Hi!

Now it's working. It was two errors. I had put the context.xml file in the WEB-INF folder and not in the META-INF folder and my Context tag was written with a lower case, context. Realy bad error messages from Tomcat here.

But because of your little demo application I was able to solve this problem.

Thanks for excellent support!

/Fredrik

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