Java Spring boot REST应用程序的MessageConverter的自定义实现不工作

我使用SpringBoot构建了一个rest应用程序。api请求对象是一个包含字符串和ASN1OctetString的自定义对象。因此，我为消息转换器编写了一个自定义实现

但我无法将inputStream转换为包含String和Asn1OctetString的customVO对象。 如何将输入流转换为customVo对象

我尝试使用ObjectInput ois=new ObjectInputStreamis；，但它给出了一个错误，比如header无效。 请告诉我如何解决这个问题

下面给出了代码的细节。 该应用程序具有如下控制器：-

@RequestMapping(method = RequestMethod.POST, value = "/MyApp/postMessage", produces = "application/json;charset=UTF-8",consumes="ASN1OctetString/bytes;charset=UTF-8")
public DeferredResult<MyCustomVO> process(@Valid @RequestBody MyCustomVO myCustomVO, HttpServletRequest request){

    //service code
}

消息转换器的自定义实现：-

public class MyCustomVOConverter extends AbstractHttpMessageConverter<MyCustomVO> {

public MyCustomVOConverter() {
    super();
}

public MyCustomVOConverter(org.springframework.http.MediaType supportedMediaType) {
    super(supportedMediaType);
}

public MyCustomVOConverter(MediaType... supportedMediaTypes) {
    super(supportedMediaTypes);
}

@Override
protected boolean supports(Class<?> clazz) {
    return MyCustomVO.class.equals(clazz);
}

@Override
protected MyCustomVO readInternal(Class<? extends MyCustomVO> clazz, HttpInputMessage httpInputMessage) throws IOException, HttpMessageNotReadableException {
    MyCustomVO MyCustomVORequest= new MyCustomVO();

    InputStream is= httpInputMessage.getBody(); 
**//Need to convert the stream to customVO object**
}

@Override
protected void writeInternal(MyCustomVO MyCustomVOResp, HttpOutputMessage httpOutputMessage) throws IOException, HttpMessageNotWritableException {

}

---

}

您必须在messageConverter中指定一个媒体类型，否则转换器不知道他负责哪种媒体类型。 执行以下操作以注册mediatype：

public MyCustomVOConverter() {
  MediaType type = new MediaType("ASN1OctetString", "bytes", Charset.forName("UTF-8");
  setSupportedMediaTypes(Arrays.asList(type)); 
}

public MyCustomVOConverter() {
  MediaType type = new MediaType("ASN1OctetString", "bytes", Charset.forName("UTF-8");
  setSupportedMediaTypes(Arrays.asList(type)); 
}