Problema com JSF + Tomcat + MySQL + linux

Front-end
#1

Pessoal é o seguinte:

Eu criei uma aplicação WEB utilizando J2EE 1.4, Tomcat 5.5, jsf 1.1 e MySQL 5.0.51a no Windows XP.
Porém minha aplicação precisa rodar em um servidor WEB linux que possui o tomcat 5.5.
A aplicação funciona normalmente no servidor linux exceto em nas páginas em que eu faço acesso ao banco de dados.

O erro gerado no arquivo de log do tomcat:

SEVERE: Servlet.service() for servlet Faces Servlet threw exception
javax.faces.FacesException: Error calling action method of component with id form:btnEnviar
        at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:74)
        at javax.faces.component.UICommand.broadcast(UICommand.java:106)
        at org.ajax4jsf.component.AjaxViewRoot.processEvents(AjaxViewRoot.java:184)
        at org.ajax4jsf.component.AjaxViewRoot.broadcastEvents(AjaxViewRoot.java:162)
        at org.ajax4jsf.component.AjaxViewRoot.processApplication(AjaxViewRoot.java:350)
        at org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:271)
        at org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:94)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
        at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
        at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)
Caused by: javax.faces.el.EvaluationException: Exception while invoking expression #{form.verificaDados}
        at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:153)
        at org.apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:63)
        ... 25 more
Caused by: java.lang.NoSuchMethodError: java.lang.String.isEmpty()Z
        at packageDocPG.Form.verificaDados(Form.java:274)
        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:585)
        at org.apache.myfaces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:129)
        ... 26 more

Por favor se alguém puder me ajudar agradeço muito.

#2

Lembrando que a aplicação funciona perfeitamente no tomcat 5.5 no windows XP

Meu bean é .java (Não tem managed-beans.xml).
Também uso o contex.xml.

faces-config.xml:

<?xml version='1.0' encoding='UTF-8'?>


<!DOCTYPE faces-config PUBLIC
  "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
  "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">

<!-- =========== FULL CONFIGURATION FILE ================================== -->

<faces-config>
    <managed-bean>
        <managed-bean-name>form</managed-bean-name>
        <managed-bean-class>packageDocPG.Form</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
    <navigation-rule>
        <from-view-id>/formularioDocPG.jsp</from-view-id>
        <navigation-case>
            <from-outcome>sucesso</from-outcome>
            <to-view-id>/confirmaDocPG.jsp</to-view-id>
        </navigation-case>
        <navigation-case>
            <from-outcome>erro</from-outcome>
            <to-view-id>/formularioDocPG.jsp</to-view-id>
        </navigation-case>
    </navigation-rule>
    <navigation-rule>
        <from-view-id>/confirmaDocPG.jsp</from-view-id>
        <navigation-case>
            <from-outcome>erro</from-outcome>
            <to-view-id>/erroDocPG.jsp</to-view-id>
        </navigation-case>
        <navigation-case>
            <from-outcome>sucesso</from-outcome>
            <to-view-id>/fimDocPg.jsp</to-view-id>
        </navigation-case>
    </navigation-rule>
</faces-config>

context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<Context path="/controleDocPos">
    <Resource name="jdbc/dbdocpg" auth="Container" 
        type="javax.sql.DataSource"
        driverClassName="com.mysql.jdbc.Driver" 
        maxActive="500" 
        maxIdle="40" 
        maxWait="60000" 
        password="2ddha99b"
        url="jdbc:mysql://localhost/dbdocpg" 
        username="root" 
        validationQuery="SELECT 1" 
    />
    
    <Resource name="mail/Email" auth="Container"
        type="javax.mail.Session"
        username="andrerochadeoliveira@gmail.com"
        password="2ddha99b"
        mail.debug="false"
        mail.user="andrerochadeoliveira@gmail.com"
        mail.to="andrerocha_sigma@hotmail.com"        
        mail.transport.protocol="smtp" 
        mail.mime.charset="ISO-8859-1"
        mail.smtp.host= "smtp.gmail.com"
        mail.smtp.auth= "true"
        mail.smtp.port= "25"
        mail.smtp.ssl="true"
        mail.smtp.starttls.enable="true"
    />
</Context>

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <context-param>
        <param-name>com.sun.faces.verifyObjects</param-name>
        <param-value>false</param-value>
    </context-param>
    <context-param>
        <param-name>com.sun.faces.validateXml</param-name>
        <param-value>true</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>client</param-value>
    </context-param>
    <listener>
        <listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
    </listener>
    <context-param>
        <param-name>org.richfaces.SKIN</param-name>
        <param-value>blueSky</param-value>
    </context-param>
    <filter>
        <display-name>RichFaces Filter</display-name>
        <filter-name>richfaces</filter-name>
        <filter-class>org.ajax4jsf.Filter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>richfaces</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/formularioDocPG.jsp</welcome-file>
    </welcome-file-list>
    <resource-ref>
        <res-ref-name>jdbc/dbdocpg</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>
    <resource-ref>
        <res-ref-name>mail/Email</res-ref-name>
        <res-type>javax.mail.Session</res-type>
        <res-auth>Container</res-auth>
    </resource-ref>
    </web-app>

Muito obrigado mesmo pela atenção.

#3

alguém???

#4

Posta seu : faces-config.xml e managed-beans.xml.

#5