CODEWITHSUNDEEP
javaspringspring-bootresttemplate
yasik
yasik

Reputation: 21

to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS)

I am trying to route HttpServletRequest to another microservice where request may contain multi-part request or any normal request. but while sending I am getting the below error.

Note: I dont want to modify the request as I am trying to write some generic method. 

public Object doPostCall(HttpServletRequest request, String requestURL, String rootURL)
            throws URISyntaxException, IOException, ServletException {

        RestTemplate restTemplate = new RestTemplate();
        final String url = rootURL + requestURL;
        uri = new URI(url);

        try {
            result2 = restTemplate.postForEntity(uri, request, Object.class);
            System.out.println("after service call" + result2);
        } catch (RestClientException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result2;
    }

com.fasterxml.jackson.databind.exc.InvalidDefinitionException: 

No serializer found for class java.util.Collections$3 and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: org.springframework.web.multipart.support.StandardMultipartHttpServletRequest["request"]->org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper["request"]->org.apache.catalina.connector.RequestFacade["attributeNames"])

Even I have tried setting this in property file. spring.jackson.serialization.FAIL_ON_EMPTY_BEANS=false, but it didn't work

My Consume controller is like below:

@PostMapping(value = "/v1/upload/{moduleName}/{fileType}", produces = "application/json")
    public ResponseEntity<Object> uploadFiles(@RequestPart("file") List<MultipartFile> inputFileList,
            @RequestParam(value = "createdBy", required = false) String createdBy, @PathVariable String moduleName,
            @RequestParam(value = "catalogId", required = false) String catalogId,
            @RequestParam(value = "catalogName", required = false) String catalogName, @PathVariable String fileType) {

Upvotes: 2

Views: 9551

Answers (1)

Terrence Munyunguma
Terrence Munyunguma

Reputation: 156

Try annotating your entity class with @JsonIgnoreProperties("hibernateLazyInitializer")

Upvotes: 3

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