将文本作为字符串从公式类型的excel单元格获取到Java（数据格式化程序不起作用）

Question

如何获得用Java使用Apache POI读取的“ Book1.xls”中的公式类型单元格中存储的文本？

这是我的在单元格中设置公式的代码：

     JTextArea test = new javax.swing.JTextArea();
    InputStream fis = new FileInputStream("D:\\StudyWell\\Book1.xls");
    POIFSFileSystem fs = new POIFSFileSystem( fis );
    HSSFWorkbook wb = new HSSFWorkbook(fs);
    HSSFSheet sheet = wb.getSheetAt(0);
    int count = sheet.getLastRowNum();

        for(int j =0; j<=count; j++){
            HSSFRow row=sheet.getRow(j);  
            HSSFCell cell=row.getCell(0);
            HSSFRichTextString rts=cell.getRichStringCellValue();
            String text = rts.toString();
            an.append("\n");
            an.setEditable(false);
            a2.append(",");
            a2.setEditable(false);
                    String otext = "A"+String.valueOf(j+1);
                    String atext = "E"+String.valueOf(j+1);
                    String formula = "SUBSTITUTE"+"("+otext+","+atext+","+"\"______________\""+")";
                    System.out.println(formula);
                    HSSFCell cell_temp = row.createCell(2);
                    cell_temp.setCellFormula(formula);


            for (int i=1; i<rts.length(); i++) {
                    HSSFFont font = wb.getFontAt(rts.getFontAtIndex(i));

                        if(font.getUnderline()==1){
                            String s = "";

                                s = s + String.valueOf(text.charAt(i));
                                    test.setText(s);
                                    a2.append(test.getText());
                                    an.append(test.getText());    
                    }
            }         
    }
        String aforprint = a2.getText();
        for(int a=0; a<=count; a++){
         HSSFRow row=sheet.getRow(a);  
         HSSFCell cell_temp2 = row.createCell(4);


         String[] temp3 = aforprint.split(",");
         List<String> fixedlen = Arrays.asList(temp3);
         ArrayList<String> alist = new ArrayList<String>(fixedlen);

                if(alist.get(0).equals("")){
                   alist.remove(0);
                   }
             String celltext = String.valueOf(alist.get(a));
             cell_temp2.setCellValue(celltext);

        }

        try {
             FileOutputStream out =  new FileOutputStream(new File("D:\\StudyWell\\Book1.xls"));
             wb.write(out);
             out.close();
             }
             catch (FileNotFoundException e) {
                e.printStackTrace();
             }
             catch (IOException e) {
                e.printStackTrace();
             }

} catch(Exception e) { e.printStackTrace(); } } 

您可以看到，单元格Substitute(A1, E1)中有一个公式C1，]。>

现在，我想获取以Java字符串形式存储在C1中的文本。

这是我尝试过的：

     JTextArea test = new javax.swing.JTextArea();
    InputStream fis = new FileInputStream("D:\\StudyWell\\Book1.xls");
    POIFSFileSystem fs = new POIFSFileSystem( fis );
    HSSFWorkbook wb = new HSSFWorkbook(fs);
    DataFormatter formatter = new DataFormatter(); 

    HSSFSheet sheet = wb.getSheetAt(0);
    int count = sheet.getLastRowNum();

        for(int j =0; j<=count; j++){
            HSSFRow row=sheet.getRow(j);  
            HSSFCell cellatc=row.getCell(2);       
            //String rts = cellatc.getStringCellValue();
            //HSSFRichTextString rts = cellatc.getRichStringCellValue();
            //String text = rts.toString();
            String rts = formatter.formatCellValue(cellatc);
            HSSFCell cellata = row.getCell(0);
            cellata.setCellValue(rts);
            cellatc.setCellValue("");
        }

        try {
             FileOutputStream out =  new FileOutputStream(new File("D:\\StudyWell\\Book1.xls"));
             wb.write(out);
             out.close();
             }
             catch (FileNotFoundException e) {
                e.printStackTrace();
             }
             catch (IOException e) {
                e.printStackTrace();
             }
     }

catch(Exception e) { e.printStackTrace(); } 
这样做得到OutOfMemory: Insufficient Java Heap Size error，我将Java堆大小增加到3024MB。即使这样做，问题仍然存在。

还有其他方法可以完成此任务吗？请帮助，TIA！

我如何使用Apache POI在Java读取的“ Book1.xls”中的公式类型单元格中存储文本？这是在单元格中设置公式的代码：JTextArea test = new javax.swing.JTextArea（）; ...

Answer 1

您需要使用ExcelExtractor类，例如