java - Aspose xlsx和pptx文件转换异常

Question

我正在使用这些 jar 文件将 excel 和 power point 文件转换为 PDF
aspose.slides-6.7.0.jar
aspose.slides-6.7.0-jdk14.jar
aspose-cells-7.3.4.jar
Aspose 正在正确转换 ppt 和 xls 文件，但它在 xlsx 和 pptx 文件上抛出异常。
现在我正在使用试用版。
这是因为试用版还是我使用的是旧版 Aspose？
这是异常(exception)

SEVERE: com.aspose.slides.UnsupportedFormatException: The file is ZIP archive. It can be Microsoft PowerPoint 2007 PPTX presentation.
    at com.aspose.slides.eQ.break(Unknown Source)
    at com.aspose.slides.eQ.<init>(Unknown Source)
    at com.aspose.slides.eS.byte(Unknown Source)
    at com.aspose.slides.eS.new(Unknown Source)
    at com.aspose.slides.eS.<init>(Unknown Source)
    at com.aspose.slides.uj.do(Unknown Source)
    at com.aspose.slides.uj.<init>(Unknown Source)
    at com.aspose.slides.Presentation.do(Unknown Source)
    at com.aspose.slides.Presentation.<init>(Unknown Source)
    at com.aspose.slides.Presentation.<init>(Unknown Source)
    at com.delta.MiDAS.commonlibs.Utility.convertPPT(Utility.java:58)
    at com.delta.MiDAS.controllers.DocumentInsertController.loadDocForPreview(DocumentInsertController.java:485)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at com.sun.el.parser.AstValue.invoke(AstValue.java:254)
    at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
    at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
    at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
    at javax.faces.component.UICommand.broadcast(UICommand.java:315)
    at javax.faces.component.UIData.broadcast(UIData.java:1093)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1259)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
    at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1542)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
    at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:77)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
    at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
    at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
    at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
    at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
    at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
    at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:849)
    at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:746)
    at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1045)
    at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:228)
    at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
    at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
    at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
    at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
    at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
    at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
    at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
    at java.lang.Thread.run(Thread.java:722)

这是我的转换代码

public void convertPPT(String Path) throws Exception{
            Presentation pres = new Presentation(Path);
            Integer index=Path.lastIndexOf(".");
            String destPath=Path.substring(0, index)+".pdf";
            pres.saveToPdf(destPath);
            System.out.println("PPT file converted to PDF");

        }

        public void convertExcel(String Path) throws Exception{

            Workbook workbook = new Workbook(Path);

            //Save the document in PDF format
            Integer index=Path.lastIndexOf(".");
            String destPath=Path.substring(0, index)+".pdf";

            workbook.save(destPath, FileFormatType.PDF);

            System.out.println("excel converted to doc");

        }

有什么建议吗？

Answer 1

不，异常不是因为使用试用版或旧版本的Aspose(虽然推荐使用的版本总是最新的，你应该使用Aspose.Cells for Java 7.4.2和Aspose.Slides for Java 7.2.0)

要处理 xlsx 和 pptx 文件，您必须按如下方式修改转换方法:

public void convertPPTToPDF(String Path) throws Exception
{
    String extension = "";
    Integer index = Path.lastIndexOf(".");
    if (index > 0) {
        extension = Path.substring(index+1);
    }

    if (extension.equals("ppt"))
    {
        Presentation pres = new Presentation(Path);
        String destPath=Path.substring(0, index)+".pdf";
        pres.saveToPdf(destPath);
    }
    else if (extension.equals("pptx"))
    {
        //Instantiate a PresentationEx object that represents a PPTX file
        PresentationEx pres = new PresentationEx(Path);
        String destPath=Path.substring(0, index)+".pdf";

        //Saving the PPTX presentation to PDF document
        pres.save(destPath, com.aspose.slides.SaveFormat.Pdf);
    }
    System.out.println("Powerpoint file converted to PDF successfully");
}

public void convertExcelToPDF(String Path) throws Exception
{
    String extension = "";
    Integer index = Path.lastIndexOf(".");
    if (index > 0) {
        extension = Path.substring(index+1);
    }

    if (extension.equals("xls"))
    {
        Workbook workbook = new Workbook(Path);

        //Save the document in PDF format
        String destPath=Path.substring(0, index)+".pdf";
        workbook.save(destPath, FileFormatType.PDF);
    }
    else if (extension.equals("xlsx"))
    {
        //Createing and XLSX LoadOptions object
        LoadOptions loadOptions = new LoadOptions(FileFormatType.XLSX);

        //Creating an Workbook object with 2007 xlsx file path and the loadOptions object
        Workbook workbook = new Workbook(Path, loadOptions);
        String destPath=Path.substring(0, index)+".pdf";
        workbook.save(destPath, FileFormatType.PDF);
    }

    System.out.println("Excel file converted to PDF successfully");
}

我已经检查更新的方法是否适用于最新版本的 Aspose.Cells 和 Aspose.Slides for Java 的 ppt、pptx、xls 和 xlsx 文件。

我是 Aspose 的开发人员布道师。