苹果浏览器支持java

Question

同样的问题 我复制了相关代码 改为数据流的方式 为什么就不行了呢？
long contentLength = fileLength;
String range = request.getHeader("Range");
int start = 0, end = 0;
if (range != null && range.startsWith("bytes=")) {
String[] values = range.split("=")[1].split("-");
start = Integer.parseInt(values[0]);
if (values.length > 1) {
end = Integer.parseInt(values[1]);
}
}
int requestSize = 0;
if (end != 0 && end > start) {
requestSize = end - start + 1;
} else {
requestSize = Integer.MAX_VALUE;
}

    byte[] buffer = new byte[4096];
    response.setContentType("video/mp4");
    response.setHeader("Accept-Ranges", "bytes");
    response.setHeader("ETag",  URLEncoder.encode(fileManage.getFileName(), "UTF-8"));
    response.setHeader("Last-Modified", new Date().toString());
    //第一次请求只返回content length来让客户端请求多次实际数据
    if (range == null) {
        response.setHeader("Content-length", contentLength + "");
    } else {
        //以后的多次以断点续传的方式来返回视频数据
        response.setStatus(HttpServletResponse.SC_PARTIAL_CONTENT);//206
        long requestStart = 0, requestEnd = 0;
        String[] ranges = range.split("=");
        if (ranges.length > 1) {
            String[] rangeDatas = ranges[1].split("-");
            requestStart = Integer.parseInt(rangeDatas[0]);
            if (rangeDatas.length > 1) {
                requestEnd = Integer.parseInt(rangeDatas[1]);
            }
        }
        long length = 0;
        if (requestEnd > 0) {
            length = requestEnd - requestStart + 1;
            response.setHeader("Content-length", "" + length);
            response.setHeader("Content-Range", "bytes " + requestStart + "-" + requestEnd + "/" + contentLength);
        } else {
            length = contentLength - requestStart;
            response.setHeader("Content-length", "" + length);
            response.setHeader("Content-Range", "bytes " + requestStart + "-" + (contentLength - 1) + "/" + contentLength);
        }
    }
    out = response.getOutputStream();
    int needSize = requestSize;
    is.skip(start);
    br = new BufferedInputStream(is);
    while (needSize > 0) {
        int len = br.read(buffer);
        if (needSize < buffer.length) {
            out.write(buffer, 0, needSize);
        } else {
            out.write(buffer, 0, len);
            if (len < buffer.length) {
                break;
            }
        }
        needSize -= buffer.length;
        out.flush();
    }

运行结果及报错内容

本地没有报错。，IOS上报错了
[VERBOSE-2:ui_dart_state.cc(198)] Unhandled Exception: PlatformException(VideoError, Failed to load video: The request timed out., null, null)