Question

每当我上传带有部分数据的Excel时，上传的文件都会损坏，我无法在aspose工作簿中使用此上传的文件（在某些情况下，它也有效，我不知道为什么）。即便如此，我打开它，excel显示损坏的文件消息。这里是片段

InputStream stream = file.getInputStream();


OutputStream os = new FileOutputStream("path_to_xlsFile.xls");
BufferedOutputStream bos = new BufferedOutputStream(os);
int bytesRead;
byte[] buffer = new byte[8192];

while ((bytesRead = stream.read(buffer, 0, 8192)) != -1) {
       bos.write(buffer, 0, bytesRead);
 }
bos.flush();
bos.close();
os.close();
stream.close();

我通过aspose库打开工作簿时遇到的错误，对于相同的上传文件是

java.lang.IllegalStateException: The FAT in the structured storage document seems to be corrupted.
at com.aspose.cells.py.b(Unknown Source)
at com.aspose.cells.py.b(Unknown Source)
at com.aspose.cells.py.<init>(Unknown Source)
at com.aspose.cells.Workbook.a(Unknown Source)
at com.aspose.cells.Workbook.open(Unknown Source)

或

java.lang.IllegalStateException: The structured storage seems to be corrupt.
at com.aspose.cells.mm.<init>(Unknown Source)
at com.aspose.cells.py.c(Unknown Source)
at com.aspose.cells.py.b(Unknown Source)
at com.aspose.cells.py.<init>(Unknown Source)
at com.aspose.cells.Workbook.a(Unknown Source)
at com.aspose.cells.Workbook.open(Unknown Source)

或

java.lang.IllegalArgumentException: length
at com.aspose.cells.b.a.d.h.b(Unknown Source)
at com.aspose.cells.py.c(Unknown Source)
at com.aspose.cells.py.b(Unknown Source)
at com.aspose.cells.py.<init>(Unknown Source)
at com.aspose.cells.Workbook.a(Unknown Source)
at com.aspose.cells.Workbook.open(Unknown Source)

修改

如果我使用file.transferTo（outputFile），那么对于少数文件我也会遇到此异常

java.lang.IllegalStateException: The FAT in the structured storage document seems to be corrupted.
at com.aspose.cells.py.b(Unknown Source)
at com.aspose.cells.py.b(Unknown Source)
at com.aspose.cells.py.<init>(Unknown Source)
at com.aspose.cells.Workbook.a(Unknown Source)
at com.aspose.cells.Workbook.open(Unknown Source)

Answer 1

好吧，您似乎从模板XLS文件中获取了部分数据，这可能会否定/恶化整个Excel文件格式规范或标准。因此，以字节数组（或流）提取的文件不会遵循MS Excel文件格式结构或规则。简而言之，文件将被破坏，MS Excel也会在您提到的文件打开时显示错误消息。这可能不是Aspose.Cells API的问题。如果工作正常，您可以尝试以下示例代码段（两者中的任何一个）：例如示例代码：

1)
Path path = Paths.get("path_to_xlsFile.xls"); 
ByteArrayInputStream stream = new ByteArrayInputStream(Files.readAllBytes(path)); 

Workbook workbook = new Workbook(stream); 
.........

2)
String testFileTemplate = "path_to_xlsFile.xls"; 
FileInputStream fis = new FileInputStream(new File(testFileTemplate)); 
Workbook workbook = new Workbook(fis);

我是Aspose的支持开发人员/传播者。

使用outputstream上传时文件已损坏

修改

1 个答案: