我有一个.XLS扩展名,但另存为XMl电子表格2003,想读取该文件并将其转换为带有Java代码的.XLS扩展名,我的代码在下面-
公共类ExcelImport {
public boolean readStream(InputStream stream) throws InvalidFormatException {
boolean success;
try {
byte[] bytes = getBytes(stream);
InputStream wrappedStream = new ByteArrayInputStream(bytes);
Workbook workbook = WorkbookFactory.create(wrappedStream);
//XSSFWorkbook workbook = new XSSFWorkbook(new FileInputStream(wrappedStream.toString()));
for (int i = 0; i <workbook.getNumberOfSheets(); i++) {
Sheet sheet = workbook.getSheetAt(i);
for (Row row : sheet) {
IterateThroughRow(row);
}
}
success = true;
} catch (FileNotFoundException e) {
success = false;
e.printStackTrace();
} catch (IOException e) {
success = false;
e.printStackTrace();
}
return success;
}
private void IterateThroughRow(Row row) {
Iterator<Cell> cellIterator = row.cellIterator();
while (cellIterator.hasNext()) {
Cell cell = cellIterator.next();
switch (cell.getCellType()) {
//do something with the content...
case Cell.CELL_TYPE_STRING:
cell.getStringCellValue();
break;
case Cell.CELL_TYPE_NUMERIC:
cell.getNumericCellValue();
break;
case Cell.CELL_TYPE_BOOLEAN:
cell.getBooleanCellValue();
break;
default:
}
}
}
public static byte[] getBytes(InputStream is) throws IOException {
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int len;
byte[] data = new byte[100000];
while ((len = is.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, len);
}
buffer.flush();
return buffer.toByteArray();
}
public static void main(String[] args) throws InvalidFormatException, IOException {
ExcelImport excelImport = new ExcelImport();
InputStream is = new FileInputStream("C:/Users/Desktop/Test.xls");
excelImport.readStream(is);
}}
但是当我运行时,它会给出如下错误-
线程“主”中的异常java.lang.IllegalArgumentException:您的InputStream既不是OLE2流,也不是OOXML流在org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:75)
您可以尝试运行文件路径| hexdump -n 8 -e来确保文件实际上就是它所说的。从例外来看,POI似乎无法理解文件格式。
[Hi Amol已经说过它的XMl电子表格2003,但另存为.xls扩展名。 POI无法理解我所知道的格式,但是如果我打开该文件并再次将其另存为.xml,它如何工作就很好了,但是我不想手动执行它,所以我想用Java代码来实现。