从AS3发送bytearray到Spring MVC servlet

  • Z时代
  • 2024-01-10
  • 分类：问答

我需要从Flex发送一个ByteArray到Spring MVC servlet，但它不起作用。我记录了一个音频样本，在AS3中转换为bytearray并发送给SpringMVC servlet，但接收Java的数据为null。从AS3发送bytearray到Spring MVC servlet

AS3代码：

var flacCodec:Object; 
     flacCodec = (new cmodule.flac.CLibInit).init(); 
     bytes.position = 0; 
     var rawData: ByteArray = new ByteArray(); 
     var flacData : ByteArray = new ByteArray(); 
     rawData = convert32to16(bytes); 
     flacData.endian = Endian.LITTLE_ENDIAN; 
     flacCodec.encode( encodingCompleteHandler, 
      encodingProgressHandler, 
      rawData, 
      flacData, 
      rawData.length, 
      30);    
     function encodingCompleteHandler(event:*):void {    
      var PATH:String = "http://localhost:8080/myproject/speechRecognition/"; 
      var urlRequest:URLRequest = new URLRequest(PATH); 
      var urlLoader:URLLoader = new URLLoader(); 
      urlRequest.contentType = "audio/x-flac; rate=44000"; 
      var variables:URLVariables = new URLVariables(); 
      variables.contents = flacData; 
      variables.filename = "test"; 
      urlRequest.data = variables; 
      urlRequest.method = URLRequestMethod.POST; 
      urlLoader.dataFormat = URLLoaderDataFormat.TEXT; // default 
      urlLoader.addEventListener(Event.COMPLETE, urlLoader_complete); 
      urlLoader.addEventListener(ErrorEvent.ERROR, urlLoader_error); 
      urlLoader.load(urlRequest);

Java代码：

@RequestMapping(value = "/",method = RequestMethod.POST) 
public String getSpeechRecognition(ServletRequest req) { 
    String filename = req.getParameter("filename"); 
    byte[] contents = req.getParameter("contents").getBytes(); 
    request= new SpeechRecognitionRequestVO(); 
    request.setData(contents); 
    try { 
     response=((SpeechRecognitionResponseVO) getSpeechRecognitionService().getSpeechRecognition(request)); 
    } catch (Exception e){ 
     logger.error(e.toString()); 
    } 
    return "views/sequence"; 
}

我收到空在这个参数：

req.getParameter("contents")

任何人知道发生了什么事？

回答：

这将发送您的数据为二进制：

 var header : URLRequestHeader = new URLRequestHeader("Content-type", "application/octet-stream"); 
     var url_request : URLRequest = new URLRequest(); 
     url_request.url = _url; 
     url_request.contentType = "binary/octet-stream"; 
     url_request.method = URLRequestMethod.POST; 
     url_request.data = byteArray; 
     url_request.requestHeaders.push(header); 
     var loader : URLLoader = new URLLoader(); 
     loader.addEventListener(Event.COMPLETE, loaderCompleteHandler, false, 0, true); 
     loader.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler, false, 0, true); 
     loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler, false, 0, true); 
     loader.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler, false, 0, true); 
     loader.load(url_request);

设置loader.dataFormat到URLLoaderDataFormat.BINARY，则TEXT，变量是您在Event.COMPLETE

以上是 从AS3发送bytearray到Spring MVC servlet 的全部内容， 来源链接： utcz.com/qa/257841.html

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