java.io.StreamCorruptedException：无效的流头：00000020

Question

代码始终抛出StreamCorruptedException，但我找不到任何解决方案。 这段代码有什么问题？

InputStream fileIs = null;
    ObjectInputStream objIs = null;
    UploadFileResponse resError = new UploadFileResponse();
    List<UploadFileResponse> strData = new ArrayList<UploadFileResponse>();
    UploadFileRequest fileData = null;
    try {
        File file = new File("e:/BackupAndRestore/");
        File[] fileList = file.listFiles();
        if (((null != fileList)) && (fileList.length > 0)) {
            for (File tempFile : fileList) {
                UploadFileResponse res = new UploadFileResponse();
                try {
                    fileIs = new FileInputStream(tempFile);
                   objIs = new ObjectInputStream(fileIs); //Line no 379
                    fileData = (UploadFileRequest) objIs.readObject();
                    res.setFileId(fileData.getFileId());
                    res.setFileName(fileData.getFileName());
                    res.setFilePath(fileData.getFilePath());
                    if (fileIds.equals(fileData.getFileId())) {
                        File uploadDir = new File(uploadDirectory + "/" + fileData.getFileName());
                        uploadDir.delete();
                        tempFile.delete();
                        strData.add(res);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                } 
                      finally { if (objIs != null && fileIs!=null) objIs.close(); fileIs.close(); }
            }

这是我的控制台：

java.io.StreamCorruptedException: invalid stream header: 00000020
at java.io.ObjectInputStream.readStreamHeader(Unknown Source)
at java.io.ObjectInputStream.<init>(Unknown Source)
at com.example.demo.controller.FileController.deleteFileById(FileController.java:379)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at ...

提前谢谢。