Question

我使用Spring启动构建了一个rest应用程序。 api请求对象是包含String和ASN1OctetString的自定义对象。所以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 ObjectInputStream(is);，但它提供了一个错误，例如标头无效。请告诉我如何解决这个问题。

代码的细节如下。该应用程序有一个控制器如下： -

@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
}

Request bean如下： -

import com.unboundid.asn1.ASN1OctetString;

public class MyCustomVO {

    protected String actionDesc;
    protected ASN1OctetString transId;

    //setter getter methods
}

邮件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 {

}

}

Answer 1

您必须在messageConverter中指定MediaType，否则转换器不知道他负责的媒体类型。做这样的事情来注册mediatype：

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

MessageConverter for Spring启动REST应用程序的自定义实现无法正常工作

1 个答案: