[英]Convert a File with .xls extension but save as xml spreadsheet 2003 to .xls File Formate
i have a file.XLS extension but save as XMl spreadsheet 2003, want to read the file and convert it into.XLS Extension with java code my code is below -我有一个 file.XLS 扩展名,但另存为 XMl 电子表格 2003,想要读取文件并将其转换为带有 java 代码的 XLS 扩展名,我的代码如下 -
public class ExcelImport {公共 class 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);
} } } }
but when i am runnign it it gives error like below -但是当我运行它时,它会给出如下错误 -
Exception in thread "main" java.lang.IllegalArgumentException: Your InputStream was neither an OLE2 stream, nor an OOXML stream at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:75) Exception in thread "main" java.lang.IllegalArgumentException: Your InputStream was neither an OLE2 stream, nor an OOXML stream at org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:75)
You can try to run file path|您可以尝试运行文件路径| hexdump -n 8 -e to make sure the file is actually what it says is. hexdump -n 8 -e以确保文件实际上是它所说的。 From the exception it seems that POI is not able to understand the file format.从异常看来,POI 似乎无法理解文件格式。
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