Question

我编写了一个程序，它接收.pdf文件，并将pdf中的某些数据写入Excel工作表的列中。

我无法找出一个错误，当选择多个.pdf时，它会填充所有列，只选择最终的pdf。

I.E：选择3个pdf（a，b，c）：创建的excel有3列，所有列都包含来自pdf c的相应数据。

我正在寻找这个：

|column 1|column 2 |column 3|

|data a  |  data b |  data c|

我认为我的过于复杂的循环结构存在问题。

这是我的第一个程序，代码有点乱，但这里有一个片段：

String[] listString = (String[]) list.toArray(new String[0]); 
String[] ionString = (String[]) Ion.toArray(new String[0]);

FileInputStream template = new FileInputStream(new File(templatePath));

HSSFWorkbook workbook = new HSSFWorkbook(template);
HSSFSheet worksheet = workbook.getSheetAt(0);

int totalRowNum = worksheet.getPhysicalNumberOfRows();
System.out.println("Last row at: " + totalRowNum);

for (int r = 0; r < totalRowNum; r++) { // check each row
 Row rw = worksheet.getRow(r);
 System.out.println("Row Number: " + (r + 1));
 if (rw == null) {
  System.out.println("Row ERROR");
  continue;
 }
 System.out.println("No Row erros: Line 693");
 for (int x = 0; x < size; x++) { //check each cell

  Cell c = rw.getCell(x);

  if (c == null) { //if cell is null, make it Blank
   c = rw.getCell(x, Row.CREATE_NULL_AS_BLANK);
   System.out.println("Converting Null cells to Blank");
  }

  System.out.println("No Cell Erros: Line 699");

  if (c.getCellType() == Cell.CELL_TYPE_BLANK) { //if cell is blank
   System.out.println("No more Null Cells");
   for (int n = 1; n < size + 1; n++) { //fill blank cell
    int i = 0;
    System.out.println("Line 705, Should be populating");

    //fills each cell n with string from String array index i
    HSSFCell cellB1 = name.createCell((short) n);
    cellB1.setCellValue(listString[i]);
    i++;
    /**  ..... a bunch of these for each cell ..... **/
   }
  }
 }
}
FileOutputStream fileOut = new FileOutputStream(templatePath);

//在outputStream上方写入模板

System.out.println("Your file is located at: " + templatePath);
workbook.write(fileOut);
fileOut.close();
System.out.println("*************COMPLETE*************");
}

根据要求，这里是我从以下位置获取listString的地方：

首先来自JavaFX：

private List<File> showMultipleFileChooser() throws FileNotFoundException {

    FileChooser fileChooser = new FileChooser();
    fileChooser.setTitle("Select PDF files"); 

    fileChooser.getExtensionFilters().addAll( 
        new ExtensionFilter("PDF Files", "*.pdf"));
    List<File> selectedFiles = fileChooser.showOpenMultipleDialog(savedStage);
     // List of files selected


    if (selectedFiles !=null){     //if files are selected
                  for (int i = 0; i < selectedFiles.size(); i++){
                      String fPath = selectedFiles.get(i).toString(); 
                              //gets file path in String format 
                      int size = selectedFiles.size();
                      System.out.println("LOOK AT ME " + fPath);
                      PDFTest.pdfTotxt(fPath, size, templatePath);
                  }  
            }

然后转换为.csv并使用CSVParser：

List<String> list = new ArrayList<String>(); //creates ArrayList<String>
List<String> Ion = new ArrayList<String>();

FileResource csv = new FileResource ("C:\\PDFTester\\CSV.csv"); 
//pdf has already been converted to .csv named CSV.csv

CSVParser parser = csv.getCSVParser(false); //Parses CSV
for (CSVRecord record : parser) {

    a = record.get(0);
    if (a.contains("Material:")){    //if index 0 is the one i'm looking for
       System.out.println(a + " " + record.get(1));
       material = record.get(1); 
//saves the data from that line into global String named material

       Ion.add(record.get(0));
       list.add(material); //adds data i want into List<String> list
     }
  //A bunch more like this...

覆盖Excel列而不是创建新列

0 个答案: