Question

我正在使用球衣来建造休息服务，这将上传一个文件。但我在将文件写入所需位置时遇到问题。 Java抛出一个系统找不到指定的路径错误。这是我的Web服务：

@POST
    @Path("/fileupload")
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    public Response uploadFile(@FormDataParam("file")InputStream fileUploadStream, @FormDataParam("file")FormDataContentDisposition fileDetails) throws IOException{

        StringBuilder uploadFileLocation= new StringBuilder();

          uploadFileLocation.append("c:/logparser/webfrontend/uploads");
        uploadFileLocation.append("/"+dateFormat.format(Calendar.getInstance().getTime()));
        uploadFileLocation.append("/"+fileDetails.getFileName());
        writeToFile(fileUploadStream, uploadFileLocation.toString());
        return Response.status(200).entity("File saved to " + uploadFileLocation).build();
    }

    private void writeToFile(InputStream uploadInputStream, String uploadFileLocation)
    {
        log.debug("UploadService , writeToFile method , start ()");

        try{
            int read = 0;
            byte[] bytes = new byte[uploadInputStream.available()];

            log.info("UploadService, writeToFile method , copying uploaded files.");
        OutputStream out = new FileOutputStream(new File(uploadFileLocation));
            while ((read = uploadInputStream.read(bytes)) != -1)
            {
                out.write(bytes, 0, read);
            }
            out.flush();
            out.close();
        }
        catch(Exception e)
        {
            log.error("UploadService, writeToFile method, error in writing to file "+e.getMessage());
        }
    }

Answer 1

从查看代码（包含异常和堆栈跟踪通常很有帮助），您尝试根据尚不存在的时间戳写入目录。尝试添加对File.mkdir / mkdirs的调用。看到这个问题/答案：FileNotFoundException (The system cannot find the path specified)

旁注 - 除非你有理由不这样做，否则我会考虑使用像Apache commons-io（FileUtils.copyInputStreamToFile）这样的东西进行写作。

使用Jersey休息服务上传文件时出错

1 个答案: