Apache POI XSSF读取excel文件

I just have a quick question about how to read in an xlsx file using the XSSF format from Apache.

我有一个关于如何使用Apache的XSSF格式在xlsx文件中读取的快速问题。

Right now my code looks like this:

现在我的代码是这样的:

InputStream fs = new FileInputStream(filename);   // (1)
XSSFWorkbook wb = new XSSFWorkbook(fs);           // (2)
XSSFSheet sheet = wb.getSheetAt(0);               // (3)

...with all the relevant things imported. My problem is that when I hit run, it gets stuck at line (2), in almost an infinite loop. filename is just a string.

…所有相关的东西都是导入的。我的问题是，当我点击run时，它会卡在(2)行，几乎是无限循环。文件名只是一个字符串。

If anybody could give me some sample code on how to fix this I would really appreciate it. All i want right now is to read in a single cell from an xlsx file; I was using HSSF for xls files and had no problems.

如果有人能给我一些关于如何解决这个问题的样本代码，我会非常感激。现在我只想从xlsx文件中读取一个单元格;我使用HSSF处理xls文件，没有问题。

Thanks for your help, Andrew

谢谢你的帮助，安德鲁

5 个解决方案

#1

InputStream inp = null;
        try {
            inp = new FileInputStream("E:/sample_poi.xls");

            Workbook wb = WorkbookFactory.create(inp);
            Sheet sheet = wb.getSheetAt(0);
            Header header = sheet.getHeader();

            int rowsCount = sheet.getLastRowNum();
            System.out.println("Total Number of Rows: " + (rowsCount + 1));
            for (int i = 0; i <= rowsCount; i++) {
                Row row = sheet.getRow(i);
                int colCounts = row.getLastCellNum();
                System.out.println("Total Number of Cols: " + colCounts);
                for (int j = 0; j < colCounts; j++) {
                    Cell cell = row.getCell(j);
                    System.out.println("[" + i + "," + j + "]=" + cell.getStringCellValue());
                }
            }

        } catch (Exception ex) {
            java.util.logging.Logger.getLogger(FieldController.class.getName()).log(Level.SEVERE, null, ex);
        } finally {
            try {
                inp.close();
            } catch (IOException ex) {
                java.util.logging.Logger.getLogger(FieldController.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

#2

I bealive that this will answer your questions: http://poi.apache.org/spreadsheet/quick-guide.html#ReadWriteWorkbook

这将回答您的问题:http://poi.apache.org/spreadsheet/quick-guide.html#ReadWriteWorkbook

In short, your code should look like this:

简而言之，您的代码应该如下:

InputStream inp = new FileInputStream("workbook.xlsx");
Workbook wb = WorkbookFactory.create(inp);
Sheet sheet = wb.getSheetAt(0);
Row row = sheet.getRow(2);
Cell cell = row.getCell(3);

#3

Why are you breaking the file into an InputStream? XSSFWorkbook has a constructor that simply takes the path as a String. Just hard code the path of the string in. Once you create the workbook you can create XSSFSheets from that. Then XSSFCells, which will then finally allow you to read the contents of a single cell (cells are based on x,y locations, essentially)

为什么要把文件分解成InputStream?XSSFWorkbook有一个只将路径作为字符串的构造函数。只是硬编码字符串的路径。一旦您创建了工作簿，您就可以从中创建XSSFSheets。然后XSSFCells，它将最终允许您读取单个单元的内容(基本上，单元基于x、y位置)

#4

You can try the following.

您可以尝试以下方法。

private static void readXLSX(String path) throws IOException {
    File myFile = new File(path);
    FileInputStream fis = new FileInputStream(myFile);

    // Finds the workbook instance for XLSX file
    XSSFWorkbook myWorkBook = new XSSFWorkbook (fis);

    // Return first sheet from the XLSX workbook
    XSSFSheet mySheet = myWorkBook.getSheetAt(0);

    // Get iterator to all the rows in current sheet
    Iterator<Row> rowIterator = mySheet.iterator();

    // Traversing over each row of XLSX file
    while (rowIterator.hasNext()) {
        Row row = rowIterator.next();

        // For each row, iterate through each columns
        Iterator<Cell> cellIterator = row.cellIterator();
        while (cellIterator.hasNext()) {

            Cell cell = cellIterator.next();

            switch (cell.getCellType()) {
            case Cell.CELL_TYPE_STRING:
                System.out.print(cell.getStringCellValue() + "\t");
                break;
            case Cell.CELL_TYPE_NUMERIC:
                System.out.print(cell.getNumericCellValue() + "\t");
                break;
            case Cell.CELL_TYPE_BOOLEAN:
                System.out.print(cell.getBooleanCellValue() + "\t");
                break;
            default :

            }
        }
        System.out.println("");
    }
}

#5

this works fine: try it

这招很管用:试试看

File filename = new File("E:/Test.xlsx");
FileInputStream isr= new FileInputStream(filename);

Workbook book1 = new XSSFWorkbook(isr);
Sheet sheet = book1.getSheetAt(0);  
Iterator<Row> rowItr = sheet.rowIterator();