Android排除圖像上傳請求不起作用

Question

我一直在試圖發送請求上傳圖像從Android應用程序到REST服務API，我不知道如何做到這一點，任何人都可以幫助我，這裏是代碼我試圖使用，但它說服務器端錯誤（500），並在服務器端異常是「請求不是多部分請求」，請幫助我我卡...：

Android代碼是

  Drawable multipartBody = imageView.getDrawable(); 
     Bitmap bitmap = ((BitmapDrawable)multipartBody).getBitmap(); 

     ByteArrayOutputStream stream = new ByteArrayOutputStream(); 
     bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream); 
     byte[] bitMapData = stream.toByteArray(); 

     MultipartRequest multipartRequest = 
    new MultipartRequest(
    APIEndpoints.getURI("UPLOAD_QUESTION_IMG") + newQuestionId[0], 
    null, 
    "image/jpeg", 
    bitMapData, 
    new Response.Listener<NetworkResponse>() { 
      @Override 
      public void onResponse(NetworkResponse response) { 
      Log.d("Image Upload Was successful!", ""); Toast.makeText(getApplicationContext(), "Upload successfully!", Toast.LENGTH_SHORT).show(); 
      } 
    }, 
    new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
Toast.makeText(getApplicationContext(), "Upload failed!" + error.toString(), Toast.LENGTH_SHORT).show(); 
      } 
    } 
    ); 
requestQueue.add(multipartRequest); 

服務器端API是：

@RequestMapping(method=RequestMethod.POST,value="/uploadQuestionImg/{searchId}") 
    public ResponseEntity<FileMetadata> uploadFile(@PathVariable String searchId, 
                @RequestParam("file") MultipartFile file) {} 

服務器端的堆棧跟蹤是：

org.springframework.web.multipart.MultipartException: The current request is not a multipart request 
    at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.assertIsMultipartRequest(RequestParamMethodArgumentResolver.java:216) 
    at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.resolveName(RequestParamMethodArgumentResolver.java:167) 
    at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:88) 
    at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:77) 
    at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:162) 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:129) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705) 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:646) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Thread.java:745) 

Answer 1

希望這個答案可以幫助，

Working POST Multipart Request with Volley and without HttpEntity

MIME類型的第一個變化可能 幫幫我。