我使用spring上传Excel文件,但apache POI无法读取文件,因为它已损坏或格式不同。但这只发生在我上传Excel文件时。 Excel文件在上传之前就已打开。我使用POI版本3.17
这是我的代码。
HTML
<form method="post" action="/uploadExcelFile" enctype="multipart/form-data">
<div id="categoriesForMessages" class="row">
<div class="col-sm-12">
<label>Upload File</label>
<input id="form-control-9" name="file" type="file" accept=".xls,.xlsx">
<p class="help-block">
<small>Upload Excel types .xls .xlsx</small>
</p>
</div>
</form>
控制器
public class XController {
@PostMapping("/uploadExcelFile")
public String uploadFile(Model model, MultipartFile file) throws IOException {
File currDir = new File(".");
String path = currDir.getAbsolutePath();
fileLocation = path.substring(0, path.length() - 1) + file.getOriginalFilename();
System.out.println(fileLocation);
FileOutputStream f = new FileOutputStream(fileLocation);
try {
FileInputStream fis = new FileInputStream(fileLocation);
Workbook workbook = WorkbookFactory.create(fis);
fis.close();
Sheet sheet = workbook.getSheetAt(0);
Row row = sheet.getRow(0);
System.out.println(row.getCell(0).getStringCellValue());
} catch (InvalidFormatException e) {
e.printStackTrace();
}
return "redirect:/home";
}
}
答案 0 :(得分:2)
您的代码存在的问题是您正在尝试读取刚刚创建的空文件。但是您应该阅读multipart-file
来创建工作簿。
FileInputStream fis = new FileInputStream(fileLocation); // fis created with new file location
Workbook workbook = WorkbookFactory.create(fis); //creating a workbook with an empty file
如果您尝试从工作簿中读取,则可以直接使用MultipartFile
对象并完成它。无需创建新的File
。
做这样的事情。
Workbook workbook = WorkbookFactory.create(file.getInputStream());
然后继续使用该文件。如果你想在某个地方保存文件,你可以这样做,
try (FileOutputStream outputStream = new FileOutputStream("/path/to/your/file/hello.xlsx")) {
workbook.write(outputStream);
}