如何使用jetty正确支持html5 源

我的Java / jetty应用程序上有一个简单的ResourceHandler，jetty提供2个简单文件，一个是html5页面，另一个是我的video.mp4video文件。

问题是……当我第一次打开html页面时，video被下载并缓存，并在第一次播放后停止播放并且保持冻结，如果我刷新页面，循环播放就像我预期的那样（永远连续）回放）。

java / jetty代码如下

 ResourceHandler om = new ResourceHandler(); om.setDirectoriesListed(true); om.setResourceBase(BASE_PATH); handlers.setHandlers(new Handler[] { om }); 

问题是，任何人都知道为什么由jetty 9.2.3提供的html5video只播放第一个循环然后在chrome 3.7.0上冻结…或者提供一些指导以避免在第一次播放后由docker服务时video冻结？

Answer 1

这适用于Jetty 9.2.3.v20140905

 package org.eclipse.jetty.demo; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.net.URLEncoder; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.eclipse.jetty.server.Server; import org.eclipse.jetty.servlet.DefaultServlet; import org.eclipse.jetty.servlet.ServletContextHandler; import org.eclipse.jetty.servlet.ServletHolder; public class VideoServerMain { @SuppressWarnings("serial") public class IndexerServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setContentType("text/html"); PrintWriter out = resp.getWriter(); out.println(""); out.println(""); out.println(""); for (File file : baseDir.listFiles()) { if (file.isFile() && file.getName().endsWith(".mp4")) { String encodedFilename = URLEncoder.encode(file.getName(), "UTF-8"); out.println(""); out.printf("
%s
%n",file.getName()); out.println("
"); } } out.println(""); out.println(""); } } public static void main(String[] args) { if (args.length != 1) { System.err.printf("ERROR: Usage %s [videos-dir]%n",VideoServerMain.class.getName()); System.exit(-1); } File baseDir = new File(args[0]); if (!baseDir.exists() || !baseDir.isDirectory()) { System.err.printf("ERROR: not a valid directory: %s%n",baseDir); System.exit(-1); } try { new VideoServerMain(baseDir).start(); } catch (Throwable t) { t.printStackTrace(System.err); } } private final File baseDir; public VideoServerMain(File baseDir) { this.baseDir = baseDir; } public void start() throws Exception { Server server = new Server(8080); // Establish Scratch directory for the servlet context (used by JSP compilation) File tempDir = new File(System.getProperty("java.io.tmpdir")); File scratchDir = new File(tempDir.toString(),"embedded-jetty-html5-vide-server"); if (!scratchDir.exists()) { if (!scratchDir.mkdirs()) { throw new IOException("Unable to create scratch directory: " + scratchDir); } } // Setup the basic application "context" for this application at "/" // This is also known as the handler tree (in jetty speak) ServletContextHandler context = new ServletContextHandler(ServletContextHandler.SESSIONS); context.setContextPath("/"); context.setAttribute("javax.servlet.context.tempdir",scratchDir); context.setResourceBase(baseDir.toURI().toASCIIString()); // Add servlet to present html for found videos ServletHolder holderIndexer = new ServletHolder(new IndexerServlet()); context.addServlet(holderIndexer,"/indexer"); // Make sure that our welcome-file is the indexer servlet context.setWelcomeFiles(new String[]{ "indexer" }); // Allow static file serving of videos themselves, via DefaultServlet // Add Default Servlet (must be named "default") ServletHolder holderDefault = new ServletHolder("default",DefaultServlet.class); holderDefault.setInitParameter("resourceBase",baseDir.getAbsolutePath()); holderDefault.setInitParameter("dirAllowed","true"); holderDefault.setInitParameter("welcomeServlets","true"); holderDefault.setInitParameter("redirectWelcome","true"); context.addServlet(holderDefault,"/"); server.setHandler(context); server.start(); server.join(); } } 

你似乎有2个问题。

1. ResourceHandler太简单了，无法满足浏览器对它的要求。

   浏览器似乎会在需要时执行大量部分请求，长时间请求和恢复。 这些类型的请求最好使用DefaultServlet完成

2. 您用于video标记的HTML无法正常工作，但当我将其更改为以下内容时，它工作正常。

然后铬似乎又开心了。