/**
* 下载文件的时候会使用的方法，把硬盘里的数据读取出来，然后再解析成 byte[]数组，以便下面再往客户端去写数据
*
* @return
* @throws IOException
*/
public byte[] getFileContent(String filePath) throws IOException {
StringBuilder builder = new StringBuilder();
FileReader fr = new FileReader(filePath);
BufferedReader br = new BufferedReader(fr);
String readLineStr = null;
while ((readLineStr = br.readLine()) != null) {
builder.append(readLineStr);
}
String fileContent = builder.toString();
return Base64.decode(fileContent);
}
/**
* 返回FileRepositoryDTO类
*
* @return
* @throws IOException s
* @see FileRepositoryDTO
*/
public FileRepositoryDTO getFileContentWithFileRepository(
String filePath, FileRepository fileRepository) throws IOException {
StringBuilder builder = new StringBuilder();
filePath = Config.UPLOAD_FILE_PATH + "/" + filePath + "/" + fileRepository.getId() + ".xzsoft";
FileReader fr = new FileReader(filePath);
BufferedReader br = new BufferedReader(fr);
String readLineStr = null;
while ((readLineStr = br.readLine()) != null) {
builder.append(readLineStr);
}
String fileContent = builder.toString();
FileRepositoryDTO dto = new FileRepositoryDTO();
BeanMapper.copy(fileRepository, dto);
dto.setContent(Base64.decode(fileContent));
return dto;
}
/**
* 文件的上传服务
*
* @param request
* @return
* @throws FileUploadException
* @throws IOException
*/
public FileRepository uploadFile(HttpServletRequest request)
throws FileUploadException, IOException {
boolean isMultipartContent = ServletFileUpload.isMultipartContent(request);
FileRepository fileRepository = null;
if (isMultipartContent) {
FileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload upload = new ServletFileUpload(factory);
List<FileItem> items = upload.parseRequest(request);
for (Iterator<FileItem> iterator = items.iterator(); iterator.hasNext(); ) {
FileItem item = iterator.next();
InputStream inputStream = item.getInputStream();
// 获得文件名
String fileName = item.getName();
String fileExtension = FileUtil.getFileExtension(fileName);
// 获得文件的Extension类型
MimeTypeExtension mimeTypeExtension =
mimeTypeExtensionService.findByMimeTypeExtensionName(fileExtension);
fileRepository = new FileRepository();
FixEntityUtil.fixEntity(fileRepository);
String fileRepoId = fileRepository.getId();
fileRepository.setMimeTypeExtensionName(fileExtension);
if (mimeTypeExtension.getMimeType() != null) {
fileRepository.setMimeTypeName(mimeTypeExtension.getMimeType().getMimeTypeName());
}
fileRepository.setFileName(fileName);
String datePath = new SimpleDateFormat("yyyy/MM/dd").format(new Date());
String saveFilePath = Config.UPLOAD_FILE_PATH + "/" + datePath + "/";
File file = new File(saveFilePath);
if (!file.exists()) {
file.mkdirs();
}
file = new File(saveFilePath + fileRepoId + ".xzsoft");
ByteArrayOutputStream out = new ByteArrayOutputStream();
int byteRead = 0;
byte[] buffer = new byte[8192];
while ((byteRead = inputStream.read(buffer, 0, 8192)) != -1) {
out.write(buffer, 0, byteRead);
}
inputStream.close();
// 将上传的文件变Base64加密过的字符串
String content = Base64.encode(out.toByteArray());
out.close();
// 将加密过后的数据存储到硬盘中
FileWriter fileWriter = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fileWriter);
bw.write(content);
bw.flush();
fileWriter.flush();
bw.close();
fileWriter.close();
}
} else {
throw new NotMultipartRequestException("上传的文件里面没有Multipart内容");
}
return fileRepository;
}