java - 如何在Java Apache POI中修复NotOfficeXmlFileException？

我正在尝试创建一个仅包含“ hello”的新excel文件。
这是我的代码：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JFileChooser;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 *
 * @author kamal
 */
public class JavaApplication4 {
    private static String dir = "";
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try {
            // TODO code application logic here
            JFileChooser jc = new JFileChooser();
                        jc.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
            int output = jc.showOpenDialog(null);
            if(output == JFileChooser.APPROVE_OPTION){
                File f = jc.getSelectedFile();
                String directory = f.getAbsolutePath();
                setDir(directory);
            }


            FileOutputStream out = new FileOutputStream(new File(getDir()+"\\Book2.xlsx"));
            FileInputStream in = new FileInputStream(new File(getDir()+"\\Book2.xlsx"));

           org.apache.poi.ss.usermodel.Workbook workbook = new XSSFWorkbook(in);
            org.apache.poi.ss.usermodel.Sheet sheet = workbook.getSheetAt(0);

           sheet.createRow(0).createCell(0).setCellValue("hello");

            workbook.write(out);
            workbook.close();


        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            Logger.getLogger(JavaApplication4.class.getName()).log(Level.SEVERE, null, ex);
        }


    }

    /**
     * @return the dir
     */
    public static String getDir() {
        return dir;
    }

    /**
     * @param dir the dir to set
     */
    public static void setDir(String directory) {
        dir = directory;
    }

}

..当我运行它时，出现以下错误：

Exception in thread "main" org.apache.poi.openxml4j.exceptions.NotOfficeXmlFileException: No valid entries or contents found, this is not a valid OOXML (Office Open XML) file
	at org.apache.poi.openxml4j.opc.ZipPackage.getPartsImpl(ZipPackage.java:286)
	at org.apache.poi.openxml4j.opc.OPCPackage.getParts(OPCPackage.java:758)
	at org.apache.poi.openxml4j.opc.OPCPackage.open(OPCPackage.java:327)
	at org.apache.poi.util.PackageHelper.open(PackageHelper.java:37)
	at org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:291)
	at javaapplication4.JavaApplication4.main(JavaApplication4.java:46)
C:\Users\kamal\AppData\Local\NetBeans\Cache\8.2\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 7 seconds)

我在youtube上查找了此代码，但相同，但是我不确定为什么会收到错误？你能帮我吗？

最佳答案

我认为最可能的解释是该文件已损坏，或者它是XSSFWorkbook无法理解的较旧格式的电子表格文件。

如果不查看文件本身，几乎没有人可以给您明确的诊断。

关于java - 如何在Java Apache POI中修复NotOfficeXmlFileException？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/43641081/