java.lang.ClassNotFoundException：org.apache.xmlbeans.XmlObject错误

Question

我收到以下错误

线程“主”中的异常java.lang.NoClassDefFoundError：OrderBook.WriteToExcelSheet.CreateOutPutFile（WriteToExcelSheet.java:20）处的org
/ apache / xmlbeans /
XmlObject，OrderBook.MainMethod.main（MainMethod.java:71）

我在网上查找了此错误的原因，但找不到为什么要得到它。

我已包含以下jar文件

poi-3.9-20121203.jar, 
poi-excelant-3.9-20121203.jar,
poi-examples-3.9-20121203.jar,
poi-ooxml-3.9-20121203.jar,
poi-ooxml-schemas-3.9-20121203.jar,
poi-scratchpad-3.9-20121203.jar

码：

public class WriteToExcelSheet {
    public static Map < Integer, Object[] > data = new TreeMap < Integer, Object[] > ();
    public static void CreateOutPutFile() {
        XSSFWorkbook workbook = new XSSFWorkbook();
        XSSFSheet sheet = workbook.createSheet("Orderbook Stats");
        //This data needs to be written (Object[])
        //Iterate over data and write to sheet
        Set < Integer > keyset = data.keySet()
        int rownum = 0;
        for (Integer key: keyset) {
            Row row = sheet.createRow(rownum++);
            Object[] objArr = data.get(key);
            int cellnum = 0;
            for (Object obj: objArr) {
                Cell cell = row.createCell(cellnum++);
                if (obj instanceof String) cell.setCellValue((String) obj);
                else if (obj instanceof Integer) cell.setCellValue((Integer) obj);
            }
        }
        try {
            //Write the workbook in file system
            System.out.println("OutPutStats.xlsx writing..............................");
            FileOutputStream out = new FileOutputStream(new File("FileLocation/o.xlxs"));
            workbook.write(out);
            out.close();
            System.out.println("OutPutStats.xlsx written successfully on disk.");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Answer 1

您必须再添加一个罐子。

xmlbeans-2.3.0.jar

添加并尝试。

注意： 仅对于.xlsx格式的文件是必需的，而不仅仅是.xls格式的文件。