我正在制作一個簡單的 Javacom.sun.net.httpserver.HttpServer來提供靜態視頻文件。如果我返回狀態代碼 206，部分內容，當我嘗試通過瀏覽器訪問它時，視頻無法播放（狀態代碼為 200 的視頻播放正常，但我希望能夠搜索和循環播放視頻），這是我的HttpHandler：final String path = StaticHandler.toPathSafe(httpExchange.getRequestURI().getPath());System.out.println(path);final File file = new File(path);if (file.isFile()){ int code = 200; long position = 0L; long end = file.length(); if (httpExchange.getRequestHeaders().containsKey("Range")) { try { long[] range = StaticHandler.parseRange(httpExchange.getRequestHeaders().get("Range").get(0)); position = range[0]; if (range[1] != -1) end = range[1]; // the video loads fine when code = 200; code = 206; httpExchange.getResponseHeaders().set("Content-Range", "bytes " + position + "-" + end + "/" + file.length()); } catch (Exception e) { e.printStackTrace(); } } httpExchange.getResponseHeaders().set("Accept-Range", "bytes"); httpExchange.getResponseHeaders().set("Content-Type", "video/mp4"); httpExchange.getResponseHeaders().set("Content-Length", String.valueOf(end - position)); System.out.println("Response: " + position + ", " + end); httpExchange.sendResponseHeaders(code, 0L); final FileChannel fileChannel = new FileInputStream(file).getChannel(); final WritableByteChannel responseChannel = Channels.newChannel(response.getOutputStream()); fileChannel.transferTo(position, end - position, responseChannel); responseChannel.close(); fileChannel.close();}else{ System.out.println("404"); httpExchange.sendResponseHeaders(404, -1);}上面的代碼無法在 chrome 上加載，但在 firefox 中工作正常，這是我在 Chrome 中獲得的標頭：Response Headers:Accept-range: bytesContent-length: 31491166Content-range: bytes 0-31491166/31491166Content-type: video/mp4Date: Sat, 27 Jul 2019 14:32:55 GMTTransfer-encoding: chunked我是否遺漏了什么和/或我的代碼有什么問題？
2 回答
楊魅力
TA貢獻1811條經驗 獲得超6個贊
范圍包括開始到結束。不是起始長度
例如：
Content-range: bytes 0-0/31491166
返回 1 個字節（從字節零到字節零）
您的代碼不起作用，因為瀏覽器正在等待一個從未發送過的字節。
嚕嚕噠
TA貢獻1784條經驗 獲得超7個贊
使用下面的代碼片段。它在所有瀏覽器Safari、Firefox 和 Chrome上運行和測試。
protected byte[] prepareContent(final HttpHeaders headers, byte[] media,
String range) throws IOException {
long rangeStart = 0;
long rangeEnd;
long fileSize = media.length;
String[] ranges = range.split("-");
rangeStart = Long.parseLong(ranges[0].substring(6));
if (ranges.length > 1) {
rangeEnd = Long.parseLong(ranges[1]);
} else {
rangeEnd = fileSize - 1;
}
if (fileSize < rangeEnd) {
rangeEnd = fileSize - 1;
}
String contentLength = String.valueOf((rangeEnd - rangeStart) + 1);
headers.add("Content-Length", contentLength);
headers.add("Content-Range", "bytes " + rangeStart + "-" + rangeEnd + "/" + fileSize);
headers.add("Content-Type", "video/mp4");
headers.add("Accept-Ranges","bytes");
return readByteRange(media, rangeStart, rangeEnd);
}
private byte[] readByteRange(byte[] media, long start, long end) throws IOException {
try (InputStream inputStream = new ByteArrayInputStream(media);
ByteArrayOutputStream bufferedOutputStream = new ByteArrayOutputStream()) {
int nRead;
while ((nRead = inputStream.read(media, 0, media.length)) != -1) {
bufferedOutputStream.write(media, 0, nRead);
}
bufferedOutputStream.flush();
byte[] result = new byte[(int) (end - start) + 1];
System.arraycopy(bufferedOutputStream.toByteArray(), (int) start, result, 0, result.length);
return result;
}
}
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