Question

在我的应用程序中，我尝试使用Apache TomaHawk将<h:DataTable>中的数据导出为PDF文件。在加载页面时，我遇到了异常。我已经粘贴了我的代码和下面的例外。

JSF代码

<%@ page session="false" contentType="text/html;charset=utf-8"%> 
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%> 
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
<%@ taglib uri="http://myfaces.apache.org/tomahawk" prefix="t"%>
<%@ taglib uri="http://myfaces.apache.org/sandbox" prefix="s"%>
<f:view>
<html>
    <body>
        <h:form>
            <p>
                This component allows to export the datatable contents to an excel
                or pdf file.
            </p>

            <br>
            <t:dataTable id="tbl_cars" var="car" value="#{exBean.list}"
                preserveDataModel="false">
                <t:column>
                    <f:facet name="header">
                        <h:outputText value="Id" />
                    </f:facet>
                    <h:outputText value="#{car.id}" />
                </t:column>

                <t:column>
                    <f:facet name="header">
                        <h:outputText value="Type" />
                    </f:facet>
                    <h:outputText value="#{car.type}" />
                </t:column>

                <t:column>
                    <f:facet name="header">
                        <h:outputText value="Color" />
                    </f:facet>
                    <h:outputText value="#{car.color}" />
                </t:column>

            </t:dataTable>
            <h:commandButton action="" value="Export as excel">
                <s:exporterActionListener for="tbl_cars" fileType="XLS" />
            </h:commandButton>

            <br>

            <h:commandButton action="" value="Export as pdf">
                <s:exporterActionListener for="tbl_cars" fileType="PDF" />
            </h:commandButton>


        </h:form>

    </body>

</html> 
    </f:view>

异常

java.lang.NoClassDefFoundError: Could not initialize class    org.apache.myfaces.shared_tomahawk.config.MyfacesConfig
at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.writeCodeBeforeBodyEnd(ExtensionsPhaseListener.java:130)
at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.getCodeBeforeBodyEnd(ExtensionsPhaseListener.java:104)
at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.getJavaScriptCodeAndStoreInRequest(ExtensionsPhaseListener.java:94)
at org.apache.myfaces.renderkit.html.util.ExtensionsPhaseListener.afterPhase(ExtensionsPhaseListener.java:70)
at org.apache.myfaces.lifecycle.PhaseListenerManager.informPhaseListenersAfter(PhaseListenerManager.java:92)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:142)
at org.apache.myfaces.custom.ppr.PPRLifecycleWrapper.render(PPRLifecycleWrapper.java:84)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:182)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:178)
at org.ajax4jsf.webapp.BaseFilter.handleRequest(BaseFilter.java:290)
at org.ajax4jsf.webapp.BaseFilter.processUploadsAndHandleRequest(BaseFilter.java:388)
at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:515)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
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)

Answer 1

java.lang.NoClassDefFoundError: Could not initialize class
   org.apache.myfaces.shared_tomahawk.config.MyfacesConfig

类路径是脏的（不同版本的重复JAR文件相互冲突），或者您只是忘记安装Tomahawk和/或其依赖项commons-fileupload，commons-logging ，commons-io和/或commons-el（只需将JAR文件放入/WEB-INF/lib）。

使用Tomahawk将数据导出为PDF格式？

1 个答案: