Question

当我尝试从服务器流式传输视频文件时，我正面临servlet的这个问题。服务文件的代码

    if (contentType == null) {
        contentType = "application/octet-stream";
    }

    response.reset();
    response.setBufferSize(ServerConfiguration.DEFAULT_BUFFER_SIZE);
    response.setContentType(contentType);
    response.setHeader("Content-Length", String.valueOf(file.length()));
    response.setHeader("Content-Disposition", "inline; filename=\"" + file.getName() + "\"");
    response.setHeader("Cache-Control", "public") ;


     BufferedInputStream input = null;
     BufferedOutputStream output = null;

        try {
            // Open streams.
            input = new BufferedInputStream(new FileInputStream(file), ServerConfiguration.DEFAULT_BUFFER_SIZE);
            output = new BufferedOutputStream(response.getOutputStream(), ServerConfiguration.DEFAULT_BUFFER_SIZE);

            // Write file contents to response.
            byte[] buffer = new byte[ServerConfiguration.DEFAULT_BUFFER_SIZE];
            int length;
            while ((length = input.read(buffer)) > 0) {
                output.write(buffer, 0, length);
            }
        }
        catch (Exception e) {
            log(e);
        }
            finally {
            // Gently close streams.
            close(output);
            close(input);
        }

我已将内容处置设置为'inline'，当我调试时，我可以看到请求以无限循环进入服务器，每次都会抛出此错误：

ClientAbortException:  java.io.IOException
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:369)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:327)
at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:392)
at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:381)
at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:93)
at java.io.BufferedOutputStream.write(Unknown Source)
at com.venividi.ResourceManager.UploadFileManager.getMediaFiles(UploadFileManager.java:118)
at com.venividi.Servlet.VenividiServlet.doGet(VenividiServlet.java:182)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.venividi.Servlet.CharacterEncodingFilter.doFilter(CharacterEncodingFilter.java:29)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:399)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:306)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:322)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1732)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Caused by: java.io.IOException
at org.apache.coyote.http11.InternalAprOutputBuffer.flushBuffer(InternalAprOutputBuffer.java:208)
at org.apache.coyote.http11.InternalAprOutputBuffer$SocketOutputBuffer.doWrite(InternalAprOutputBuffer.java:238)
at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:84)
at org.apache.coyote.http11.AbstractOutputBuffer.doWrite(AbstractOutputBuffer.java:190)
at org.apache.coyote.Response.doWrite(Response.java:533)
at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:364)
... 28 more

如果我将内容处理类型更改为附件 - 我可以下载文件并从localsytem播放文件（这意味着数据正确）但无法播放此视频文件（通过网址）使用VLC播放器（网络流选项）或我的自定义iPhone媒体播放器。

我想做一些类似服务器的事情 - http://www.yo-yo.org/mp4/yu.mp4 ..我可以通过将URL提供给VLC或我的Iphone app ..网站来播放此文件（http：//www.yo-yo .org / mp4 /）..

溜溜球mp4文件的响应标题是

接受-范围：字节连接：保持活动内容长度：7846115 内容类型：text / plain的;字符集= UTF-8 日期：2011年8月15日星期一18:01:12 GMT ETag的： “32a000f-77b8e3-3bd314df3c340” 保持活动：超时= 2 最后修改时间：2003年5月9日星期五01:39:49 GMT 服务器：Apache / 2.2.8（Fedora）

虽然我的服务器的响应头是

缓存控制：公共内容处置：内联;文件名= “3648ef48-71bf-4393-9c0e-89fda68a683c.mp4” 内容长度：7846115 内容类型：视频/ MP4 日期：2011年8月15日星期一18:10:07 GMT 服务器：Apache-狼/ 1.1

请提供一些建议。我真的很感激任何帮助

此致苏里亚

Answer 1

我得到了上述问题的解决方案。 chrome发送字节范围请求，服务器应处理此类请求，而不是在单个请求中写入完整文件。

此链接很有用：Servlet Supporting Resume

servlet +视频流+ ClientAbortException

1 个答案: