Yes, it should find it. Have you verified that the class in the driverClassName element actually does exist in that package in the jar file you just mentioned?
Jake At 10:56 PM 9/22/2002 -0500, you wrote: >I do have mysql-connector-java-2.0.14-bin.jar in the common/lib directory. >Shouldn't it find the correct class being there? > >On Sunday 22 September 2002 10:39 pm, Kwok Peng Tuck wrote: > > Are you actually using the mysql driver? Cause if it says loading driver > > null, means there isn't one. > > > > > > John Walstra wrote: > > >I'm trying to set up a JNDI connection to MySQL. I'm using the binary > > > release of 4.1.11 with 4.0.4's jasper-compiler.jar and > > > jasper-runtime.jar. I'm also using mysql-connector-java-2.0.14. > > > > > >It's very similar to this thread > > >http://www.mail-archive.com/[email protected]/msg64346.html , > > >however I still can't get mine working after reading that thread. I've > > >basically followed (cut and paste) the JNDI Datasource HOWTO, > > >http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-h > > >owto.html . > > > > > >Here is the Context section of my server.xml > > > > > > <Context path="/jkw" > > > docBase="/usr/local/web/meta-htdocs/JWALSTRA/htdocs/jsp" > > > debug="5" useNaming="true" > > > reloadable="true" crossContext="true"> > > > > > > <Logger className="org.apache.catalina.logger.FileLogger" > > > prefix="jkw_log." suffix=".txt" > > > timestamp="true"/> > > > > > > <Resource name="jdbc/JKW" > > > auth="Container" > > > type="javax.sql.DataSource"/> > > > > > > <ResourceParams name="jdbc/JKW"> > > > <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> > > > > > > <!-- MySQL dB username and password for dB > connections --> > > > <parameter> > > > <name>username</name> > > > <value>nobody</value> > > > </parameter> > > > <parameter> > > > <name>password</name> > > > <value></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/jkw?autoReconnect=true</value> > > > </parameter> > > > </ResourceParams> > > > </Context> > > > > > >Here is my web.xml > > > > > ><?xml version="1.0" encoding="ISO-8859-1"?> > > > > > ><!DOCTYPE web-app > > > PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" > > > "http://java.sun.com/dtd/web-app_2_3.dtd";> > > > > > ><web-app> > > > > > > <taglib> > > > <taglib-uri> > > > /orataglib > > > </taglib-uri> > > > <taglib-location> > > > /WEB-INF/tlds/orataglib_1_0_3.tld > > > </taglib-location> > > > </taglib> > > > > > > <taglib> > > > <taglib-uri> > > > /jkw > > > </taglib-uri> > > > <taglib-location> > > > /WEB-INF/tlds/jkw-1.0.tld > > > </taglib-location> > > > </taglib> > > > > > > <resource-ref> > > > <description>MySQL DB Connection</description> > > > <res-ref-name>jdbc/JKW</res-ref-name> > > > <res-type>javax.sql.DataSource</res-type> > > > <res-auth>Container</res-auth> > > > </resource-ref> > > > > > ></web-app> > > > > > >My common/lib directory ... (jasper* is from 4.0.4) > > > > > >-rw-r--r-- 1 root root 45386 Sep 19 08:30 activation.jar > > >-rw-r--r-- 1 root root 716139 Sep 19 08:30 ant.jar > > >-rw-r--r-- 1 root root 90503 Sep 19 08:30 > > >commons-collections.jar > > >-rw-r--r-- 1 root root 62998 Sep 19 08:30 commons-dbcp.jar > > >-rw-r--r-- 1 root root 16910 Sep 19 08:30 > > >commons-logging-api.jar > > >-rw-r--r-- 1 root root 28930 Sep 19 08:30 commons-pool.jar > > >-rw-r--r-- 1 root root 210191 Sep 22 21:40 > > > jasper-compiler.jar -rw-r--r-- 1 root root 67077 Sep 22 > > > 21:40 jasper-runtime.jar -rw-r--r-- 1 root root 84854 Sep > > > 19 08:30 jdbc2_0-stdext.jar -rw-r--r-- 1 root root 98496 > > > Sep 19 08:30 jndi.jar > > >-rw-r--r-- 1 root root 8674 Sep 19 08:30 jta.jar > > >-rw-r--r-- 1 root root 280984 Sep 19 08:30 mail.jar > > >-rw-r--r-- 1 root root 125961 Sep 22 21:27 > > >mysql-connector-java-2.0.14-bin.jar > > >-rw-r--r-- 1 root root 28664 Sep 19 08:30 naming-common.jar > > >-rw-r--r-- 1 root root 18222 Sep 19 08:30 naming-factory.jar > > >-rw-r--r-- 1 root root 37601 Sep 19 08:30 > > > naming-resources.jar -rw-r--r-- 1 root root 80054 Sep 19 > > > 08:30 servlet.jar > > > > > >Here is my code sniplet ... > > > > > > Connection conn = null; > > > Statement stmt = null; > > > ResultSet rset = null; > > > > > > Context ctx = new InitialContext(); > > > if(ctx == null ) > > > { > > > throw new Exception("Boom - No Context"); > > > } > > > > > > DataSource ds = (DataSource)ctx.lookup( "java:comp/env/jdbc/JKW"); > > > > > > try > > > { > > > conn = ds.getConnection(); > > > stmt = conn.createStatement(); > > > > > >And the error message ... > > > > > >java.sql.SQLException: Cannot load JDBC driver class 'null' > > > at > > >org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.j > > >ava:529) at > > >org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java > > >:312) at jkw.jsp.beans.SkillTypeBean.setTypeId(SkillTypeBean.java:42) at > > > sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at > > >sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: > > >39) at > > >sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorIm > > >pl.java:25) > > > > > > > > >Any ideas? > > > > > >Thanks, > > >John > >-- >John Walstra >1002 North Stanford Street >Port Washington, WI 53074 >H: (262) 284-2395 >C: (847) 858-2395 > >[EMAIL PROTECTED] >[EMAIL PROTECTED] >[EMAIL PROTECTED] > >It is so stupid of modern civilisation to have given up believing in the >devil when he is the only explanation of it. > -- Ronald Knox, "Let Dons Delight" > >-- >To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> >For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
