MySQL источник данных не работает, когда приложение развернуто на wildfly

Question

Веб-приложение работает нормально при работе с Eclipse IDE

Но после его развертывания на сервере wildfly не происходит связывание для доступа к базе данных.На приведенной ниже странице jsf имеются данные ниже ДОБАВИТЬ Новые данные и при отправке ДОБАВИТЬ Новые данные появится диалоговое окно для добавления данных, но оно не отображается после развертывания на wildfly.И получение исключения нулевого указателя для страниц, обращающихся к базе данных.

    Context Path:/STCMedicalSystem
Servlet Path:/secure/MedVoucUpdate.jsf
Path Info:null
Query String:null
Stack Trace:
javax.servlet.ServletException
    at javax.faces.webapp.FacesServlet.executeLifecyle(FacesServlet.java:725)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:451)
    at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:74)
    at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
    at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68)
    at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
    at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:132)
    at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
    at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
    at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
    at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
    at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
    at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:68)
    at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
    at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
    at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
    at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
    at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
    at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
    at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
    at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1502)
    at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
    at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
    at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
    at io.undertow.server.Connectors.executeRootHandler(Connectors.java:364)
    at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:830)
    at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
    at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
    at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.NullPointerException
    at com.stc.medical.dao.ConnectionPool.getConnection(ConnectionPool.java:47)
    at com.stc.medical.service.RegMedicalVoucherService.getAllMedicalNos(RegMedicalVoucherService.java:21)
    at com.stc.medical.upload.RegMedicalVoucherAction.<init>(RegMedicalVoucherAction.java:32)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at java.lang.Class.newInstance(Class.java:442)
    at com.sun.faces.mgbean.BeanBuilder.newBeanInstance(BeanBuilder.java:162)
    at com.sun.faces.mgbean.BeanBuilder.build(BeanBuilder.java:76)
    at com.sun.faces.mgbean.BeanManager.createAndPush(BeanManager.java:387)
    at com.sun.faces.mgbean.BeanManager.create(BeanManager.java:247)
    at com.sun.faces.el.ManagedBeanELResolver.resolveBean(ManagedBeanELResolver.java:200)
    at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:55)
    at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:156)
    at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:184)
    at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:92)
    at com.sun.el.parser.AstValue.getBase(AstValue.java:126)
    at com.sun.el.parser.AstValue.getValue(AstValue.java:175)
    at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:202)
    at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:73)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:170)
    at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:157)
    at javax.faces.component.UIData.getValue(UIData.java:736)
    at javax.faces.component.UIData.getDataModel(UIData.java:1849)
    at javax.faces.component.UIData.getRowCount(UIData.java:347)
    at org.primefaces.component.datatable.DataTable.calculatePage(DataTable.java:769)
    at org.primefaces.component.datatable.DataTableRenderer.encodeMarkup(DataTableRenderer.java:160)
    at org.primefaces.component.datatable.DataTableRenderer.encodeEnd(DataTableRenderer.java:85)
    at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:595)
    at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:286)
    at com.sun.faces.renderkit.html_basic.GroupRenderer.encodeChildren(GroupRenderer.java:90)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:566)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1647)
    at javax.faces.render.Renderer.encodeChildren(Renderer.java:152)
    at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:566)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1647)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1650)
    at javax.faces.component.UIComponent.encodeAll(UIComponent.java:1650)
    at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:468)
    at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:170)
    at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:132)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:102)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:76)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:199)
    at javax.faces.webapp.FacesServlet.executeLifecyle(FacesServlet.java:708)
    ... 42 more

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>STCMedicalSystem</display-name>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  <resource-ref>
    <description>My DataSource Reference</description>
    <res-ref-name>jdbc/stc_medical</res-ref-name>
    <res-type>javax.sql.DataSource</res-type>
    <res-auth>Container</res-auth>
  </resource-ref>
<servlet>
        <servlet-name>FacesServlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>FacesServlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>
    <context-param>
        <description>State saving method: 'client' or 'server' (=default). See JSF Specification 2.5.2</description>
        <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
        <param-value>client</param-value>
    </context-param>
    <context-param>
        <param-name>javax.faces.CONFIG_FILES</param-name>
        <param-value>/WEB-INF/faces-config.xml</param-value>
    </context-param>
    <listener>
        <listener-class>com.sun.faces.config.ConfigureListener</listener-class>
    </listener>
    <context-param>
        <param-name>primefaces.THEME</param-name>
        <param-value>start</param-value>
    </context-param>
</web-app>

page.xhtml:

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:p="http://primefaces.prime.com.tr/ui">
<h:head>
    <title>STC Medical system</title>
    <link rel="shortcut icon" type="image/x-icon"
        href="../resources/images/favicon.ico" />
    <link href="../resources/css/style1.css" rel="stylesheet"
        type="text/css" />
    <link rel="stylesheet" type="text/css"
        href="../resources/css/sdmenu.css" />
    <script type="text/javascript" src="../resources/js/sdmenu.js"></script>
<h:body>
<h:form id="dbform">
                                                            <p:growl id="growl" />
                                                            <h:panelGrid>
                                                                <p:outputPanel>
                                                                    <h:outputText value="Filter by Flag(E, R, S, D, N): " />
                                                                    <h:selectOneMenu immediate="true"
                                                                        value="#{allMedVocAction.selectedFlag}"
                                                                        onchange="submit()"
                                                                        valueChangeListener="#{allMedVocAction.flagFilter}"
                                                                        render="true">
                                                                        <f:selectItem itemLabel="Select One" itemValue="all" />
                                                                        <f:selectItems id="options"
                                                                            value="#{allMedVocAction.flagNames}" />
                                                                    </h:selectOneMenu>
                                                                </p:outputPanel>
                                                            </h:panelGrid>
                                                            <h:panelGroup id="dbpanelgrid">
                                                                <p:dataTable style="width:800px;" id="tbl" var="med"
                                                                    value="#{allMedVocAction.searchResults}"
                                                                    paginator="true"
                                                                    paginatorTemplate="{CurrentPageReport}  {FirstPageLink} {PreviousPageLink} {PageLinks} {NextPageLink} {LastPageLink} {RowsPerPageDropdown}"
                                                                    rowsPerPageTemplate="5,10,15" rowKey="med.file"
                                                                    selection="med.selectedMedNo"
                                                                    columnClasses="text,number,number,number,text,text"
                                                                    rowClasses="table-evenRow,table-oddRow"
                                                                    update="excelPdfPanelGroup" rows="5"
                                                                    selectionMode="single"
                                                                    rowSelectListener="#{allMedVocAction.onDataSelect}">
    <p:column sortBy="#{med.brno}" filterBy="#{med.brno}"
                                                                        filterMatchMode="contains">
                                                                        <f:facet name="header">
                                                                            <h:outputText value="BRNO" />
                                                                        </f:facet>
                                                                        <h:outputText value="#{med.brno}" />
                                                                    </p:column>
<p:column style="text-align:center;">
                                                                        <f:facet name="header">
                                                                            <h:outputText value="EDIT" />
                                                                        </f:facet>
                                                                        <p:commandButton title="EDIT" onclick="dlg2.show();"
                                                                            render="tbl"
                                                                            action="#{allMedVocAction.editMcodeDetails}"
                                                                            image="ui-icon ui-icon-pencil"
                                                                            update="editfrom:editdevice,display" immediate="true">
                                                                            <f:setPropertyActionListener value="#{med}"
                                                                                target="#{allMedVocAction.selectedMedNo}" />
                                                                        </p:commandButton>
                                                                    </p:column>
                                                                </p:dataTable>
                                                                <!-- Delete Dialog box -->
                                                                <!-- Preview Dialog box -->
                                                            </h:panelGroup>
                                                        </h:form>
</h:body>
</html>

Получение кода ответа 500 в журнале доступа tomcat для страниц jsf после развертывания на сервере tomcat.context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xml>
<Context path="/stc_medical">
<Resource name="jdbc/stc_medical" 
              auth="Container"
              type="javax.sql.DataSource" 
              username="root" 
              password="root"
              driverClassName="com.mysql.jdbc.Driver"
              url="jdbc:mysql://localhost:3306/stc_medical?autoReconnect=true"
              validationQuery="select 1"
              maxActive="10" 
              maxIdle="4"/>
</Context>

Класс ConnectionPool:

    public class ConnectionPool {
    private static ConnectionPool pool = null;
    private static DataSource dataSource = null;

    private ConnectionPool() {
        try {
            InitialContext ic = new InitialContext();
            dataSource = (DataSource) ic
                    .lookup("java:/comp/env/jdbc/stc_medical");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * Get an instance of the connection pool
     * 
     * @return ConnectionPool
     */
    public static ConnectionPool getInstance() {
        if (pool == null) {
            pool = new ConnectionPool();
        }
        return pool;
    }

    /**
     * Get a connection
     * 
     * @return Connection
     */
    public Connection getConnection() {
        try {
            return dataSource.getConnection();
        } catch (SQLException sqle) {
            sqle.printStackTrace();
            return null;
        }
    }

    /**
     * Free a connection
     * 
     * @param c
     */
    public void freeConnection(Connection c) {
        try {
            c.close();
        } catch (SQLException sqle) {
            sqle.printStackTrace();
        }
    }
}

Я поместил mysql-connector-java-5.1.23-bin в каталог lib tomcat при развертывании файла war, ноне может получить доступ к базе данных.Я пробовал много способов, но не смог найти решение.