Spring MVC StreamingResponseBody trả về tập tin chunked

Question

Tôi gặp sự cố khi sử dụng springMVC StreamingResponseBody để trả lại video. Video tôi nhận được từ máy chủ bị gián đoạn. Các bạn có thể gợi ý cho tôi không?

Các file video đã chunked

điều khiển của tôi:

@RestController 
    @RequestMapping("/rest/videos") 
    public class VideoController { 
     private String videoLocation = "videos"; 
     private ConcurrentHashMap<String, File> videos = new ConcurrentHashMap<String, File>(); 

     @PostConstruct 
     public void init() { 
      ClassLoader classloader = Thread.currentThread().getContextClassLoader(); 
      File dir = new File(classloader.getResource(videoLocation).getPath()); 
      System.out.println(dir); 
      videos.clear(); 
      videos.putAll(Arrays.asList(dir.listFiles()).stream() 
        .collect(Collectors.toMap((f) -> { 
         String name = ((File) f).getName(); 
         return name; 
        }, (f) -> (File) f))); 
     } 

     @RequestMapping(method = RequestMethod.GET, value = "/{video:.+}") 
     @PreAuthorize("permitAll") 
     public StreamingResponseBody stream(@PathVariable String video) 
       throws FileNotFoundException { 
      File videoFile = videos.get(video); 
      final InputStream videoFileStream = new FileInputStream(videoFile); 
      return (os) -> { 
       readAndWrite(videoFileStream, os); 
      }; 
     } 

     @RequestMapping(method = RequestMethod.GET) 
     @PreAuthorize("permitAll") 
     public Set<String> list() { 
      System.out.println(videos.keySet()); 
      return videos.keySet(); 
     } 

     private void readAndWrite(final InputStream is, OutputStream os) 
       throws IOException { 
      byte[] data = new byte[2048]; 
      int read = 0; 
      int i = 0; 
      while ((read = is.read(data)) > 0) { 
       os.write(data, 0, read); 
       System.out.println("buffer Number "+i++); 
      } 
      os.flush(); 
     } 
    } 

cấu hình của tôi:

@Configuration 
public class AsyncWebConfig extends WebMvcConfigurerAdapter { 
    @Override 
    public void configureAsyncSupport(AsyncSupportConfigurer configurer) { 
     System.out.println("My AsyncSupportConfigurer!"); 
     configurer.setDefaultTimeout(-1); 
     configurer.setTaskExecutor(asyncTaskExecutor()); 
    } 

    @Bean 
    public AsyncTaskExecutor asyncTaskExecutor() { 
     System.out.println("My AsyncSupportConfigurer!!~"); 
     return new SimpleAsyncTaskExecutor("async"); 
    } 
} 

web.xml My

 <context-param> 
      <param-name>contextConfigLocation</param-name> 
      <param-value>classpath:spring/business-config.xml</param-value> 
     </context-param> 

     <listener> 
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
     </listener> 

     <servlet> 
      <servlet-name>mvc-dispatcher</servlet-name> 
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
      <async-supported>true</async-supported> 
     </servlet> 

     <servlet-mapping> 
      <servlet-name>mvc-dispatcher</servlet-name> 
      <url-pattern>/</url-pattern> 
     </servlet-mapping> 
    </web-app> 

servlet dispatcher tôi

<context:component-scan base-package="com.BackEnd.restful.mvc"/> 

    <mvc:resources mapping="/app/**" location="/app/build/"/> 

    <mvc:annotation-driven/> 

    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 
     <property name="prefix" value="/WEB-INF/jsp/"/> 
     <property name="suffix" value=".jsp"/> 
    </bean> 
    <security:global-method-security pre-post-annotations="enabled"> 
     <security:protect-pointcut expression="execution(* com.BackEnd.restful.mvc.*.*(..))" 
            access="ROLE_DUMMY"/> 
    </security:global-method-security> 

Các bản ghi lỗi:

buffer Number 2691 
buffer Number 2692 
buffer Number 2693 
buffer Number 2694 
buffer Number 2695 
buffer Number 2696 
buffer Number 2697 
buffer Number 2698 
buffer Number 2699 
buffer Number 2700 
Aug 15, 2016 10:36:08 PM org.springframework.web.context.request.async.WebAsyncManager setConcurrentResultAndDispatch 
SEVERE: Could not complete async processing due to timeout or network error 
buffer Number 0 
buffer Number 1 
buffer Number 2 
buffer Number 3 
buffer Number 4 
buffer Number 5 
buffer Number 6 
buffer Number 7 
buffer Number 8 
buffer Number 9 
buffer Number 10 
buffer Number 11 
buffer Number 12 

Answer 1

chỉnh asynctimeout của máy chủ chứa của bạn nên giải quyết vấn đề