问题描述

Spring Boot API 定义 GET 请求 API ， 返回视频流。前端通过 <video> 标签加载并播放视频，效果是必须等整个视频资源全部加载到浏览器才能播放，而且 <video> 标签默认的进度条无法控制视频的播放。最终希望的效果是视频流边加载边播放，且播放器的控制正常使用。

解决方法

Spring Framework 文件请求处理

import org.springframework.core.io.FileSystemResource;import org.springframework.core.io.Resource;import org.springframework.stereotype.Component;import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;import javax.servlet.http.HttpServletRequest;import java.nio.file.Path;@Componentpublic class NonStaticResourceHttpRequestHandler extends ResourceHttpRequestHandler { public final static String ATTR_FILE = "NON-STATIC-FILE"; @Override protected Resource getResource(HttpServletRequest request) { final Path filePath = (Path) request.getAttribute(ATTR_FILE); return new FileSystemResource(filePath); }}

Controller 层

@RestController@AllArgsConstructorpublic class FileRestController { private final NonStaticResourceHttpRequestHandler nonStaticResourceHttpRequestHandler; /** * 预览视频文件, 支持 byte-range 请求 */ @GetMapping("/video") public void videoPreview(HttpServletRequest request, HttpServletResponse response) throws Exception { String path = request.getParameter("path"); Path filePath = Paths.get(path); if (Files.exists(filePath)) { String mimeType = Files.probeContentType(filePath); if (!StringUtils.isEmpty(mimeType)) { response.setContentType(mimeType); } request.setAttribute(NonStaticResourceHttpRequestHandler.ATTR_FILE, filePath); nonStaticResourceHttpRequestHandler.handleRequest(request, response); } else { response.setStatus(HttpServletResponse.SC_NOT_FOUND); response.setCharacterEncoding(StandardCharsets.UTF_8.toString()); } }}

相关资料

How do I return a video with Spring MVC so that it can be navigated using the html5 tag?

https://stackoverflow.com/questions/3303029/http-range-header

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