1.场景描述
服务端上传MP4视频文件，iOS客户端通过URL播放该视频文件。提供视频接口，可以进行视频下载或者直接播放，但是iOS手机无法播放，且PC端safari浏览器也无法播放。
2.问题描述
安卓手机可以正常播放视频，iOS手机无法播放，且PC段safari浏览器也无法播放。
3.问题分析
（1）safari不支持整个文件流，服务器必须支持分段请求。
（2）safari对于文件流的请求需要包含一个请求头Range， 和一个响应头Content-Range

4.针对问题分析，进行文件分段传输，以下代码已经验证，可行，代码如下：

package com.example.yonyou.dyp.com;import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;/*** @description: iOS手机无法播放，且PC端safari浏览器也无法播放问题修复* @author Lancy* @date: 2023/12/8 17:11*/
@RestController
@RequestMapping("/videos")
public class VideoController {@GetMapping("/{videoFileName}")public ResponseEntity<byte[]> streamVideo(@RequestHeader(value = "Range", required = false) String rangeHeader,HttpServletRequest request) throws IOException {String filePath = "D:/video/20230801_093526.mp4";// 获取视频文件的Resource对象（假设convertToLocalResource提供了这个方法）Resource videoResource = convertToLocalResource(filePath);// 处理Range请求if (rangeHeader != null && rangeHeader.startsWith("bytes=")) {return handleRangeRequest(videoResource, rangeHeader);} else {return handleFullRequest(videoResource);}}private ResponseEntity<byte[]> handleRangeRequest(Resource videoResource, String rangeHeader) throws IOException {// 解析Range请求头long[] range = parseRange(rangeHeader, videoResource.contentLength());// 获取视频的部分数据byte[] videoBytes = getPartialVideo(videoResource, range[0], range[1]);// 设置Content-Range头部HttpHeaders headers = createRangeHeaders(videoBytes.length, range[0], range[1], videoResource.contentLength());return new ResponseEntity<>(videoBytes, headers, HttpStatus.PARTIAL_CONTENT);}private ResponseEntity<byte[]> handleFullRequest(Resource videoResource) throws IOException {// 获取完整视频的数据byte[] videoBytes = getFullVideo(videoResource);// 设置Content-Range头部HttpHeaders headers = createFullHeaders(videoBytes.length, videoResource.contentLength());return new ResponseEntity<>(videoBytes, headers, HttpStatus.OK);}private long[] parseRange(String rangeHeader, long contentLength) {// 解析Range请求头String[] range = rangeHeader.substring(6).split("-");long start = Long.parseLong(range[0]);long end = range.length==1 || range[1].isEmpty() ? contentLength - 1 : Long.parseLong(range[1]);return new long[]{start, end};}private byte[] getPartialVideo(Resource videoResource, long start, long end) throws IOException {// 获取部分视频数据try (InputStream videoStream = videoResource.getInputStream()) {long length = end - start + 1;byte[] videoBytes = new byte[(int) length];videoStream.skip(start);videoStream.read(videoBytes, 0, (int) length);return videoBytes;}}private HttpHeaders createRangeHeaders(long contentLength, long start, long end, long totalLength) {// 设置Content-Range头部HttpHeaders headers = new HttpHeaders();headers.setContentType(MediaType.parseMediaType("video/mp4"));headers.setContentLength(contentLength);headers.add("Content-Range", "bytes " + start + "-" + end + "/" + totalLength);return headers;}private byte[] getFullVideo(Resource videoResource) throws IOException {// 获取完整视频的数据try (InputStream videoStream = videoResource.getInputStream()) {byte[] videoBytes = new byte[(int) videoResource.contentLength()];videoStream.read(videoBytes, 0, videoBytes.length);return videoBytes;}}private HttpHeaders createFullHeaders(long contentLength, long totalLength) {// 设置Content-Range头部HttpHeaders headers = new HttpHeaders();headers.setContentType(MediaType.parseMediaType("video/mp4"));headers.setContentLength(contentLength);headers.add("Content-Range", "bytes 0-" + (contentLength - 1) + "/" + totalLength);return headers;}public  Resource convertToLocalResource(String filePath) {File file = new File(filePath);if (file.exists() && file.isFile()) {return new FileSystemResource(file);} else {throw new IllegalArgumentException("File does not exist or is not a regular file: " + filePath);}}}

5.使用上述方案可以实现各环境的视频嵌套播放，已经验证过，可以直接用，各位根据自己的代码稍作调整即可。