Question

我从db中提取俄语字符并生成一个excel表。但不幸的是，在提取的excel表中，我必须手动将字符集更改为“UNICODE（UTF-8）”，否则我无法看到俄语字符。有人知道如何通过java更新这个字符集（我不是要求转换值）？

如果我需要提供任何内容，请告诉我。

Answer 1

Apache POI是一个选项吗？ Apache POI为您管理编码。返回的所有文本都是Java Unicode格式（我认为是UTF-16，而不是UTF-8）

以下是您在POI中阅读Excel工作表的方法：

try {

    FileInputStream file = new FileInputStream(new File("C:\\test.xls"));

    //Get the workbook instance for XLS file
    HSSFWorkbook workbook = new HSSFWorkbook(file);

    //Get first sheet from the workbook
    HSSFSheet sheet = workbook.getSheetAt(0);

    //Iterate through each rows from first sheet
    Iterator<Row> rowIterator = sheet.iterator();
    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_BOOLEAN:
                    System.out.print(cell.getBooleanCellValue() + "\t\t");
                    break;
                case Cell.CELL_TYPE_NUMERIC:
                    System.out.print(cell.getNumericCellValue() + "\t\t");
                    break;
                case Cell.CELL_TYPE_STRING:
                    System.out.print(cell.getStringCellValue() + "\t\t");
                    break;
            }
        }
        System.out.println("");
    }
    file.close();
    FileOutputStream out =
        new FileOutputStream(new File("C:\\test.xls"));
    workbook.write(out);
    out.close();

} catch (FileNotFoundException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

来源：http://viralpatel.net/blogs/java-read-write-excel-file-apache-poi/

如何通过Java更新Excel工作表的字符集

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