I am new to this list as of today, so I don't know if anyone has already
answered your question. Tomcat will not connect to mysql unless you have
a password and of course rights to the database. Here is an example.
Use these mySQL commands
mysql -u root (This command gives your root privledges).
CONNECT YourDatabase
GRANT ALL PRIVILEGES ON *.* TO [EMAIL PROTECTED] IDENTIFIED BY
“Yourpassword” WITH GRANT OPTION;
You must have a password for Tomcat to work with mySQL
Note: the above user should be removed once testing is complete!
/********* Next, put something like this in your server.xml file: *****/
- <Context path="/classified" docBase="classified" debug="5"
reloadable="true" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_Classifieds_log." suffix=".txt" timestamp="true" />
<Resource name="jdbc/Classifieds" auth="Container"
type="javax.sql.DataSource" />
- <ResourceParams name="jdbc/Classifieds">
- <parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
- <!--
Maximum number of dB connections in pool. Make sure you
configure your mysqld max_connections
large enough to handle
all of your db connections. Set to 0
for no limit.
-->
- <parameter>
<name>maxActive</name>
<value>100</value>
</parameter>
- <!--
Maximum number of idle dB connections to retain in pool.
Set to 0 for no limit.
-->
- <parameter>
<name>maxIdle</name>
<value>30</value>
</parameter>
- <!--
Maximum time to wait for a dB connection to become available
in ms, in this example 10 seconds. An
Exception is thrown if
this timeout is exceeded. Set to -1 to
wait indefinitely.
-->
- <parameter>
<name>maxWait</name>
<value>10000</value>
</parameter>
- <!--
To configure a DBCP DataSource so that abandoned dB connections
are removed and recycled
-->
- <parameter>
<name>removeAbandoned</name>
<value>true</value>
</parameter>
- <!-- MySQL dB username and password for dB connections
-->
- <parameter>
<name>username</name>
<value>tkoc</value>
</parameter>
- <parameter>
<name>password</name>
<value>trustno1</value>
</parameter>
- <!-- Class name for mm.mysql JDBC driver
-->
- <parameter>
<name>driverClassName</name>
<value>com.mysql.jdbc.Driver</value>
</parameter>
- <!--
The JDBC connection url for connecting to your MySQL dB.
The autoReconnect=true argument to the
url makes sure that the
mm.mysql JDBC Driver will automatically
reconnect if mysqld closed the
connection. mysqld by default closes
idle connections after 8 hours.
-->
- <parameter>
<name>url</name>
<value>jdbc:mysql://localhost:3306/Classifieds?autoReconnect=true</value
>
</parameter>
</ResourceParams>
</Context>
/* NOTE THAT Classifieds would be my JNDI datasource see the servlet
code below*/
IF CONNECTING VIA A SERVLET PUT THIS CODE BEFORE doPost/doGet
public void init(ServletConfig config) throws ServletException{
super.init(config);
try{
System.out.println("init() DeleteDBServlet: Start Loading
Database Driver");
Context env = (Context) new
InitialContext().lookup("java:comp/env");
pool = (DataSource) env.lookup("jdbc/Classifieds");
if (pool == null)
throw new ServletException("`jdbc/Classifieds' is an unknown
DataSource");
}catch (NamingException e) {
throw new ServletException(e);
}
}
I hope this helps,
Tom Kochanowicz
-----Original Message-----
From: Kumar Abhay-CAK203C [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 16, 2004 12:01 PM
To: 'Tomcat Users List'
Subject: RE: JDBC problems with MySQL
Importance: High
Dear Steve,
I posted this problem around 3 months back and I am daily reading the
forum, hoping that one day somebody will give a solution.
I will deeply appreciate you if u share the solution with me if u r able
to find.
Good Luck
Best Regards
Abhay Kumar
-----Original Message-----
From: Steve Gums [mailto:[EMAIL PROTECTED]
Sent: Tuesday, March 16, 2004 11:57 AM
To: [EMAIL PROTECTED]
Subject: JDBC problems with MySQL
Users
I know there has been a bazillion messages about this. I
searched the archives and couldn't find anything to solve my extremely
annoying issue. It has to be something really simple but I just can't
find it.
My System:
Solaris 9
Tomcat 5.0.19
MySQL 4.0.18
Connector J 3.0.11
I have the connector J jar in the /usr/local/tomcat/common/lib dir.
I have basically copied the HOW-TO located at.
http://jakarta.apache.org/tomcat/tomcat-5.0-doc/jndi-datasource-examples
-how
to.html
and my result is this.
Results
Foo Not Connected
Bar -1
I have tried everything I can think of. I verified the database and the
user/password combo. Works good. I even created a simple Java app that
connects and performs queries, which worked. That would indicate
everything is cool with the Connector J. I have verified that the
jdbc/TestDB is in the context and it is. As best I can tell ds
(DataSource) is coming back not null, but the call to getConnection is
failing. I created a little more verbose web app and get the following
message.
org.apache.commons.dbcp.SQLNestedException: Cannot create JDBC driver of
class '' for connect URL 'null', cause: No suitable driver
This has to be something simple, because this works fine on my old
machine. I know I am forgetting some small step that I did the first
time and failed to do again. Trust me I have checked the configs about
a million times, and
can't find any differences. Any help would be appreciated.
Sorry to be so vague here, but this is really simple. I don't know what
else to include for info.
Steve Gums
[EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.557 / Virus Database: 349 - Release Date: 12/30/2003
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.557 / Virus Database: 349 - Release Date: 12/30/2003
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
