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POorg.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
 

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  1. POorg.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
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    <p>I am working on a web based project using spring ,hybernate +jpa .I am trying to configure JTA Transactions with Atomkios my backend is mySql. I am not able to setup the application to work with mySql. my web server is tomcat 5.5.I am trying to cal jndi configured datasource .. here my code is </p> <p>persistence.xml:</p> <pre><code> &lt;persistence-unit name="exhub" transaction-type="JTA"&gt; &lt;provider&gt;org.hibernate.ejb.HibernatePersistence&lt;/provider&gt; &lt;jta-data-source&gt;java:comp/env/jdbc/exampleWeb&lt;/jta-data-source&gt; &lt;mapping-file&gt;META-INF/orm.xml&lt;/mapping-file&gt; &lt;class&gt;com.evolvus.common.model.Talogin&lt;/class&gt; &lt;class&gt;com.evolvus.common.model.TaUser&lt;/class&gt; ----------------- ----------------- &lt;properties&gt; &lt;property name="hibernate.transaction.manager_lookup_class" value="com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup"/&gt; &lt;/ properties&gt; &lt;/persistence-unit&gt; &lt;/persistence&gt; </code></pre> <p>orm.xml:</p> <pre><code>&lt;description&gt;Evolvus Solutions&lt;/description&gt; &lt;package&gt;com.evolvus.common.model&lt;/package&gt; &lt;entity class="com.evolvus.common.model.TaUser" name="TaUser"&gt; &lt;table name="ta_user" /&gt; &lt;attributes&gt; &lt;id name="userId"&gt; &lt;column name="USER_ID"/&gt; &lt;generated-value strategy="TABLE" /&gt; &lt;/id&gt; &lt;basic name="userName"&gt; &lt;column name="USER_NAME" length="50" /&gt; &lt;/basic&gt; &lt;/attributes&gt; &lt;/entity&gt; --------------- -------------- --------------- &lt;/entity-mappings&gt; </code></pre> <p>config.xml:</p> <pre><code> &lt;beans: bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"&gt; &lt;beans: property name="useTransactionAwareDataSource" value="true" /&gt; &lt;beans: property name="hibernateProperties"&gt; &lt;beans: props&gt; &lt;beans: prop key="hibernate.dialect"&gt;${database.target}&lt;/beans:prop&gt; &lt;beans: prop key="hibernate.connection.isolation"&gt;3&lt;/beans:prop&gt; &lt;beans: prop key="hibernate.current_session_context_class"&gt;jta&lt;/beans:prop&gt; &lt;beans: prop key="hibernate.transaction.factory_class"&gt;com.atomikos.icatch.jta.hibernate3.AtomikosJTATransactionFactory &lt;/beans: prop&gt; &lt;beans: prop key="hibernate.transaction.manager_lookup_class"&gt;com.atomikos.icatch.jta.hibernate3.TransactionManagerLookup &lt;/beans: prop&gt; &lt;beans: prop key="hibernate.connection.release_mode"&gt;on_close&lt;/beans: prop&gt; &lt;beans: prop key="hibernate.show_sql"&gt;false&lt;/beans: prop&gt; &lt;/beans: props&gt; &lt;/beans: property&gt; &lt;/beans: bean&gt; &lt;beans: bean id="jpaTemplate" class="org.springframework.orm.jpa.JpaTemplate"&gt; &lt;beans: property name="entityManagerFactory"&gt; &lt;beans: ref bean="entityManagerFactory" /&gt; &lt;/beans: property&gt; &lt;/beans: bean&gt; &lt;beans: bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"&gt; &lt;beans: property name="persistenceUnitName" value="payhub" /&gt; &lt;beans: property name="jpaVendorAdapter"&gt; &lt;beans:bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"&gt; &lt;beans: property name="generateDdl" value="false" /&gt; &lt;beans: property name="showSql" value="true" /&gt; &lt;beans: property name="databasePlatform" value="${database.target}" /&gt; &lt;/beans: bean&gt; &lt;/beans: property&gt; &lt;beans: property name="persistenceXmlLocation"&gt; &lt;beans: value&gt;classpath:META-INF/persistence.xml&lt;/beans:value&gt; &lt;/beans: property&gt; &lt;/beans: bean&gt; &lt;/beans: beans&gt; </code></pre> <p>and i configured jndi in tomcat 5.5 </p> <p>Apache Software Foundation\Tomcat 5.5\conf.xml:</p> <pre><code> &lt;Resource name="jdbc/exampleWeb" type="javax.sql.DataSource" maxActive="4" maxIdle="2" username="root" maxWait="5000" validationQuery="SELECT=1" driverClassName="com.mysql.jdbc.Driver" password="roopt" url="jdbc\:mysql\://localhost\:3306/welcomeHub"/&gt; and my application\web.xml &lt;resource-ref&gt; &lt;description&gt;PaymentsDatabase&lt;/description&gt; &lt;res-ref-name&gt;jdbc/exampleWeb&lt;/res-ref-name&gt; &lt;res-type&gt;javax.sql.DataSource&lt;/res-type&gt; &lt;res-auth&gt;Container&lt;/res-auth&gt; &lt;res-sharing-scope&gt;Shareable&lt;/res-sharing-scope&gt; &lt;/resource-ref&gt; </code></pre> <p>My server is staring fine but when i trying to access db data i am getting the following error in my web browser </p> <p>org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null' org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:82)</p> <p>Help me</p>
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    1. PTQuestion
    1. USSean Patrick Floyd
    1. USAgnijalam
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    2. PO
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    3. PO
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    1. This table or related slice is empty.
    1. COIn one place you have java:comp/env/jdbc/exampleWeb and in another name="jdbc/paymentsWeb" - could that be an issue?
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      1. POorg.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
      1. USRaghuram
    2. COno rehghuram .thats my written mistake .. in my application everything is same name only ..
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      1. POorg.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
      1. USAgnijalam
    3. COplease include the _full_ stack trace...
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      1. POorg.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'
      1. USMichael Wiles
 

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