Putting Jar in ClassPath/Loading JDBC Driver on Linux
Hi,
I have got this to work on Windows � but then I simply put the Connector-J Jar into the �lib� directory of my Java installation. On this Linux machine I do not have the privileges to the �lib� directory � so I need to add the Jar to the class path � but it is not seeming to get added.
I would appreciate any suggestions. I have copied the Connector-J Jar file to the Current working directory and I have tried
java -classpath './mysql-connector-java-5.1.6-bin.jar' -Xmx512M -jar ProcessBigDump_fat.jar
java -cp mysql-connector-java-5.1.6-bin.jar -Xmx512M -jar ProcessBigDump_fat.jar
Thank you for any ideas.
O.O.
When you use "-jar" any user settings of the classpath are ignored. Everything has to be specified within the jar archive itself.
Jars have a "manifest" which lets you do this. ProcessBigDump_fat.jar will already have a manifest: it has to in order to specify the main class. There will be a line like:
Main-Class: myapp.Main(Assuming the class with the static main() method was Main and it was part of the myapp package.)
What you have to do is add another line something like:
Class-Path: mysql-connector-java-5.1.6-bin.jarwhich will use the mysql jar (located in the same place as your jar) as part of the classpath.
Details in Sun's Tutorial.
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<br>
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<%
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final String DATABASE_NAME = "bssc";
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I am not sure why it is not able to get the Driver since the required jar is there in lib folder? Am I missing something ?
Edited by: sb-onward on Jul 30, 2009 6:01 PMHi,
Make sure you have set the Classpath in CRConfig.xml for the jdbc jar.
Place the CrConfig.xml in the classes directory of your application.
Please let me know the results.
Regards,
Neeraj -
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<res-auth>Container</res-auth>
</resource-ref>
The Oracle jdbc jar file classes12.jar is under common/lib in Tomcat's home. read Permission is there.
In the servlet:
init(ServletConfig config):
Context init = new InitialContext();
Context ctx = (Context) init.lookup("java:comp/env");
dataSource = (DataSource) ctx.lookup("jdbc/acdb");
doPost(..)
the error occured at :
synchronized (dataSource){
con = dataSource.getConnection();}
Thanks in advance!Everything looks correct to me, except for one thing.
In your web.xml you have this:
<res-ref-name>jdbc/ora</res-ref-name> In your server.xml, you have this tag, which matches your web.xml:
<ResourceParams name="jdbc/ora" > But in your Java code, you've got this:
dataSource = (DataSource) ctx.lookup("jdbc/acdb"); When I've successfully set up a Web app data source, all three names had to agree. You either need to change your Java lookup name to "jdbc/ora" or change the web.xml and server.xml to "jdbc/acdb".
See if that does it. Everything else sounds correct to me. - MOD -
hi all :)
i'm using a datasource (tomcat 4.1.18 with jdk 1.4)
i'm the following error :
java.sql.SQLException: Cannot load JDBC driver class 'null'my classes12.jar find in $CATALINA_HOME/common/lib
where is ma error ?
thanks a lot.GlobalNamingResources?
I sent up a data source for each app, like this:
<Context path="/api-prototype"
docBase="api-prototype.war"
debug="1"
reloadable="true"
crossContext="true"
useNaming="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost-api-prototype-log."
suffix=".txt"
timestamp="true"/>
<Resource name="jdbc/APIPrototype"
auth="Container"
type="javax.sql.DataSource"/>
<!-- Oracle 9.2.0.1 data source -->
<ResourceParams name="jdbc/APIPrototype">
<parameter>
<name>factory</name>
<value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
</parameter>
<parameter>
<name>driverClassName</name>
<value>oracle.jdbc.driver.OracleDriver</value>
</parameter>
<parameter>
<name>url</name>
<value>jdbc:oracle:thin:@elvis:1521:CAPP</value>
</parameter>
<parameter>
<name>username</name>
<value>api</value>
</parameter>
<parameter>
<name>password</name>
<value>mod</value>
</parameter>
<parameter>
<name>maxActive</name>
<value>20</value>
</parameter>
<parameter>
<name>maxIdle</name>
<value>0</value>
</parameter>
<parameter>
<name>maxWait</name>
<value>60000</value>
</parameter>
<parameter>
<name>removeAbandoned</name>
<value>true</value>
</parameter>
<parameter>
<name>removeAbandonedTimeout</name>
<value>300</value>
</parameter>
</ResourceParams>
</Context>This works fine on Tomcat 4.1.24. I don't know where you got that example from, but I'd recommend that you look at the Tomcat JNDI How-to:
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jndi-datasource-examples-howto.html
Why go anywhere else? - MOD -
ZipException in Loading JDBC Driver
Getting java.util.zip.ZipException trying to Load JDBC Driver Class.
The JDBC driver classes are in a jar file which is in WEBLOGIC_CLASSPATH.The
jar file is perfectly valid, atleast I can see it with "jar".
It works fine If I extract the jar file into my serverclasses which is in
WEBLOGIC_CLASSPATH.
We are running WLS51SP10 on AIX4.3.3. Classic VM (J2RE 1.2.2 IBM build
ca122-20010313 (JIT enabled: jitc))
I appreciate any help on this.
Thanks,
Pavan
This is the first few lines from the exception stacktrace.
java.util.zip.ZipException: invalid LOC header (bad signature)
at java.util.zip.ZipFile.read(Native Method)
at java.util.zip.ZipFile.access$5(ZipFile.java(Compiled Code))
at
java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java(Compiled Code))
at java.util.zip.ZipFile$1.fill(ZipFile.java(Compiled Code))
at
java.util.zip.InflaterInputStream.read(InflaterInputStream.java(Compiled
Code))
at weblogic.boot.ZipSource.getBytes(ZipSource.java(Compiled Code))
at
weblogic.boot.ServerClassLoader.findLocalClass(ServerClassLoader.java(Compil
ed Code))
at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
at java.lang.Class.forName1(Native Method)
at java.lang.Class.forName(Class.java(Compiled Code))
at common.cimsdao.DaoConnection.getConnection(DaoConnection.java:66)Hi.
You might try getting another copy of the driver. It could be corrupted in some
way but still work with the jar utility.
Regards,
Michael
Pavan Dinavahi wrote:
Getting java.util.zip.ZipException trying to Load JDBC Driver Class.
The JDBC driver classes are in a jar file which is in WEBLOGIC_CLASSPATH.The
jar file is perfectly valid, atleast I can see it with "jar".
It works fine If I extract the jar file into my serverclasses which is in
WEBLOGIC_CLASSPATH.
We are running WLS51SP10 on AIX4.3.3. Classic VM (J2RE 1.2.2 IBM build
ca122-20010313 (JIT enabled: jitc))
I appreciate any help on this.
Thanks,
Pavan
This is the first few lines from the exception stacktrace.
java.util.zip.ZipException: invalid LOC header (bad signature)
at java.util.zip.ZipFile.read(Native Method)
at java.util.zip.ZipFile.access$5(ZipFile.java(Compiled Code))
at
java.util.zip.ZipFile$ZipFileInputStream.read(ZipFile.java(Compiled Code))
at java.util.zip.ZipFile$1.fill(ZipFile.java(Compiled Code))
at
java.util.zip.InflaterInputStream.read(InflaterInputStream.java(Compiled
Code))
at weblogic.boot.ZipSource.getBytes(ZipSource.java(Compiled Code))
at
weblogic.boot.ServerClassLoader.findLocalClass(ServerClassLoader.java(Compil
ed Code))
at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
at java.lang.Class.forName1(Native Method)
at java.lang.Class.forName(Class.java(Compiled Code))
at common.cimsdao.DaoConnection.getConnection(DaoConnection.java:66)--
Michael Young
Developer Relations Engineer
BEA Support -
Cannot load JDBC Driver Class in Tomcat5.5 using struts.
Hello to all,
I'm working in the struts environment using Esclipse3.2 IDE.
And I have installed Tomcat5.5 server.I have created the LoginForm
in struts.Now i like to connect my LoginForm with MySql database.I
have also created the database in MySql naming strutsdatabase.
I had also download the mysql-connector-java-3.0.16-ga-bin.jar and
save that in C:/tomcat/commons/lib directory.
While running I have got the below error:
org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:766)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.setLogWriter(BasicDataSource.java:598)
at org.apache.struts.action.ActionServlet.initModuleDataSources(ActionServlet.java:808)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:335)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
javax.servlet.UnavailableException: Initializing application data source org.apache.struts.action.DATA_SOURCE
at org.apache.struts.action.ActionServlet.initModuleDataSources(ActionServlet.java:812)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:335)
at javax.servlet.GenericServlet.init(GenericServlet.java:211)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1105)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:932)
And I have attached my struts-config.xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software
Foundation//DTD Struts Configuration 1.2//EN"
"http://struts.apache.org/dtds/struts-config_1_2.dtd">
<struts-config>
<data-sources>
<data-source
type="org.apache.tomcat.dbcp.dbcp.BasicDataSource">
<set-property property="url"
value="jdbc:mysql://localhost:3306/strutsdatabase?autoReconnect
=true"/>
<set-property property="driverClassName"
value="com.mysql.jdbc.Driver"/>
<set-property property="username" value=""/>
<set-property property="password" value=""/>
<set-property property="maxActive" value="10"/>
<set-property property="validationQuery" value="SELECT
COUNT(*) FROM test"/>
<set-property property="maxWait" value="5000"/>
<set-property property="defaultAutoCommit" value="false"/>
</data-source>
</data-sources>
<form-beans>
<form-bean name="LoginForm"
type="fino.web.struts.action.LoginForm"/>
</form-beans>
<global-exceptions/>
<global-forwards/>
<action-mappings>
<action name="LoginForm" path="/login" scope="request"
type="fino.web.struts.action.LoginAction" validate="true">
<forward name="success" path="/success.jsp"/>
<forward name="failure" path="/failure.jsp"/>
</action>
</action-mappings>
<controller/>
<message-resources null="false"
parameter="org.apache.struts.action.ActionResources"/>
</struts-config>
Friends,please help me to find solution to this problem.Note: This thread was originally posted in the [Java Compiler|http://forums.sun.com/forum.jspa?forumID=7] forum, but moved to this forum for closer topic alignment.
-
Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
Hi,
At the moment I'm trying to get an example working. The error message I get is:
Unable to get connection, DataSource invalid: "org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'"
The example I tried is http://tomcat.apache.org/tomcat-6.0-doc/jndi-datasource-examples-howto.html.
Configuration:
Wampserver 2.0 (Apache, MySQL, PHP for Windows XP), Tomcat 6.0 and jdk1.6.0_03.
The following files are installed in %CATALINA_HOME%/webabbs/
- Dbtest/test.jsp
- Dbtest/WEB-INF/web.xml
- Dbtest/WEB-INF/lib/standard.jar
- Dbtest/WEB-INF/lib/tomcat-dbcp.jar
- Dbtest/WEB-INF/lib/jstl.jar
Tia,
Abel.Hi,
I added the jar file containing the requested class to my lib directory. So the current contents of that directory is:
The following files are installed in %CATALINA_HOME%/webabbs/
- Dbtest/test.jsp
- Dbtest/WEB-INF/web.xml
- Dbtest/WEB-INF/lib/standard.jar
- Dbtest/WEB-INF/lib/tomcat-dbcp.jar
- Dbtest/WEB-INF/lib/jstl.jar
- Dbtest/WEB-INF/lib/mysql-connector-java-5.1.5-bin.jar
More importantly, I started my Wamp server.
The example works as it should have. Thanks for the feedback.
Abel -
Problem loading jdbc driver in Tomcat
Hi,
I have got a connection to MySQL5.0 from TomCat 5.5.13, that was test correctly in development (JSC Upd 1) but I encounter the following deployment error :
com.sun.rave.web.ui.appbase.ApplicationException: org.apache.jasper.JasperException: org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
When I verify, I found that if I put the mysql Connector JDBC driver in <tomcat>/common/lib, there is no error.
But when the MySql Connector JDBC driver resides in <tomcat>/shared/lib, the error persists.
What's the difference ? shouldn't it work for both ?
Thanks in advance for any pointers and advise.hmm... i guess that it's a must to include the lib at /common/lib instead of shared/lib .
Is there a Tomcat resource that I can read up on ?
rgds
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