java - 分块发送大图像

Question

我正在将图像从我的 android 客户端发送到 java jersey restful 服务，我成功地做到了这一点。但我的问题是当我尝试发送大图像时说 > 1MB 它消耗更多时间所以我喜欢发送图像 CHUNKS 谁能帮我做这件事。如何将 CHUNKS 中的图像流发送(POST)到服务器

Answer 1

引用文献:

• server code & client call

• server function name

  /*** SERVER SIDE CODE****/
  
   @POST
   @Path("/upload/{attachmentName}")
   @Consumes(MediaType.APPLICATION_OCTET_STREAM)
      public void uploadAttachment(
              @PathParam("attachmentName") String attachmentName, 
              @FormParam("input") InputStream attachmentInputStream) {               
      InputStream content = request.getInputStream();
  
  // do something better than this
  OutputStream out = new FileOutputStream("content.txt");
  byte[] buffer = new byte[1024];
  int len;
  while ((len = in.read(buffer)) != -1) {
      // whatever processing you want here
      out.write(buffer, 0, len);
  }
   out.close();
  
   return Response.status(201).build();
  }
  
  
        /**********************************************/
  
  
   /** 
     CLIENT SIDE CODE
   **/
      // .....
    client.setChunkedEncodingSize(1024);
    WebResource rootResource = client.resource("your-server-base-url");
      File file = new File("your-file-path");
     InputStream fileInStream = new FileInputStream(file);
      String contentDisposition = "attachment; filename=\"" + file.getName() + "\"";
      ClientResponse response = rootResource.path("attachment").path("upload").path("your-file-name")
            .type(MediaType.APPLICATION_OCTET_STREAM).header("Content-Disposition", contentDisposition)
           .post(ClientResponse.class, fileInStream);
  

你应该在客户端拆分文件，在服务器端恢复部分文件。 然后你应该将文件合并在一起。看看split /merge file on coderanch

尽情享受吧! :)