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org.apache.catalina.util.DefaultAnnotationProcessor cannot be cast to org.apache.AnnotationProcessor

When I try to connect to login a Web Application deployed on Tomcat, I receive the following error Cannot load JDBC driver class 'com.mysql.jdbc.Driver'.


DEBUG [http-8080-1] (MysqlDAOFactory.java:120) - createConnection from uk.co.rantandrave.dao.mysql.Mysql_UserCredentialDAO:selectFirstUserCredentialWithUsernamePassword
ERROR [http-8080-1] (Mysql_UserCredentialDAO.java:415) - Exception thrown creating record User Credential
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:1136)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
        at uk.co.rantandrave.dao.daofactories.MysqlDAOFactory.createConnection(MysqlDAOFactory.java:141)
        at uk.co.rantandrave.dao.mysql.Mysql_UserCredentialDAO.selectFirstUserCredentialWithUsernamePassword(Mysql_UserCredentialDAO.java:387)
        at uk.co.rantandrave.struts.action.loginmanagement.UserLoginAction.execute(UserLoginAction.java:73)
        at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
        at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:301)
        at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283)
        at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
        at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
        at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
        at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1130)
        ... 34 more



Solution:
While configuring the datasource, the driver jar (mysql-connector-java-5.1.6-bin.jar in this case) should be placed only in the TOMCAT_HOME/lib directory and nowhere else. If you have the same jar in WEB-INF/lib or the jre extension directory, this problem is encountered. The solution is to remove the jars from all other places and keep it only in the common/lib directory of Tomcat.


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