Linux wget可以下载文件的链接用java下载不了

用了FileUtils工具类和HttpURLConnection httpconn = (HttpURLConnection) urlfile.openConnection();下载文件时总会提示Server returned HTTP response code: 403 for URL，我添加了User-Agent也不行

HttpClient client = HttpClients.createDefault();
HttpPost httppost = new HttpPost(url);用这个方法会有文件下载下来但是下下来的文件是损坏的，

为什么在服务器上直接用wget就能下载，是权限问题不能http下载吗

这是HttpClient 的代码

    public File downloadFile(String url) {
        File file = null;
        URL urlfile;
        InputStream inputStream = null;
        OutputStream outputStream = null;
        HttpURLConnection conn = null;
        try {
            String[] files = url.split("\\?");
            String originalFilename = files[0].substring(files[0].lastIndexOf('/') + 1);
            urlfile = new URL(url);
            HttpURLConnection httpconn = (HttpURLConnection) urlfile.openConnection();
            httpconn.setRequestProperty("User-Agent","Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36");
            httpconn.setDoInput(true);
            httpconn.setRequestMethod("GET");
            // 连接指定的资源
            httpconn.connect();
            inputStream = httpconn.getInputStream();
            file = new File(uploadPath + "/" + originalFilename);
            try {
                URL httpurl = new URL(url);
                FileUtils.copyURLToFile(httpurl, file);
            } catch (Exception e) {
                log.info("++++++下载文件异常{}",e.getMessage());
            }
                outputStream = new FileOutputStream(file);
                IOUtils.copy(inputStream,outputStream);
        } catch (Exception e) {
            log.info("++++++程序异常{}",e.getMessage());
            e.printStackTrace();
        } finally {
            IOUtils.closeQuietly(inputStream);
            IOUtils.closeQuietly(outputStream);
        }
        return file;
    }