java - Jxls 错误 : Cannot load XLS transformer. 请确保 Transformer 实现在类路径中

Question

这个问题已经被问过一次了，但是没有人给出绝对的解决方案。我试图从现有模板生成一个 xls 文件，但我收到一个错误，我不知道如何面对!

我的代码:String nombre = "Manuel";

        try (InputStream templateFileName = ExportExcelServlet.class.getResourceAsStream("/segJBOSS/lib/xls/Tabla_Gestion.xlsx")) {
            try (OutputStream destFileName = new FileOutputStream("Tabla_Gestion.xls")) {
                ArrayList<String> array = new ArrayList<String>();
                array.add(nombre);
                Context context = new Context();
                context.putVar("gestion", array);
                JxlsHelper.getInstance().processTemplate(templateFileName, destFileName, context);              
                } catch (Exception e) {
                // TODO: handle exception
                System.out.println(e.getMessage());
                e.printStackTrace();                
                }

        } catch (Exception e) {
            // TODO: handle exception
            System.out.println(e.getMessage());
            e.printStackTrace();
        }
    } catch (Exception e) {
        // TODO: handle exception
        System.out.println(e.getMessage());
        e.printStackTrace();
    }

这正在被实现到 WebServlet 中。

17:08:43,472 ERROR [org.jxls.util.TransformerFactory] (default task-3) Method createTransformer of org.jxls.transform.poi.PoiTransformer class thrown an Exception: java.lang.reflect.InvocationTargetException

Caused by: java.lang.NullPointerException

17:08:43,478 INFO  [stdout] (default task-3) Cannot load XLS transformer. Please make sure a Transformer implementation is in classpath
17:08:43,479 ERROR [stderr] (default task-3) java.lang.IllegalStateException: Cannot load XLS transformer. Please make sure a Transformer implementation is in classpath

非常感谢!

Answer 1

请确保类路径中有 jxls-poi 和 Apache POI jar(如果您打算使用 Apache POI)