No serializer found for class java.util.logging.ErrorManager and no properties discovered to create BeanSerializer
I think here, jackson is trying to serialize an empty object. You need to configure jackson to avoid this thing:
jackson 1.x:
myObjectMapper.configure(SerializationConfig.Feature.FAIL_ON_EMPTY_BEANS, false);
jackson 2.X
myObjectMapper.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
An example to do this thing in Spring can be found here
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rdabrowski
I am back end developer but I like to perform full-stack stuff. For this moment I have good knowledge about Java, Spring and Spring-Boot. I have basic skills in Angular 2+ and PHP (frameworks like Symphony 3 and CakePHP 3.x). My personal website is here. Greetings!
Updated on June 04, 2022Comments
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rdabrowski almost 2 years
I have a problem with serializing a response in REST application.
Here's quick snapshot of my code: ResponseWrapper.class
@JsonInclude(Include.NON_NULL) public class ResponseWrapper { private User user; private Token token; private Authentication authentication; public ResponseWrapper(){} //setters and getters }
Configuration.class
@Configuration public class BeanConfig { @Bean @Scope(value = WebApplicationContext.SCOPE_REQUEST, proxyMode = ScopedProxyMode.TARGET_CLASS) public ResponseWrapper response() { return new ResponseWrapper(); }
}
In my implementation class i got a autowired variable:
@Autowired ResponseWrapper response;
When i returning my response just like
return response;
i got a message
Failed to write HTTP message: org.springframework.http.converter.HttpMessageNotWritableException: Could not write content: No serializer found for class java.util.logging.ErrorManager and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.coig.prek.webservice.utils.wrappers.ResponseWrapper$$EnhancerBySpringCGLIB$$9e771672["targetSource"]->org.springframework.aop.target.SimpleBeanTargetSource["beanFactory"]->org.springframework.beans.factory.support.DefaultListableBeanFactory["beanClassLoader"]->org.apache.catalina.loader.ParallelWebappClassLoader["resources"]->org.apache.catalina.webresources.StandardRoot["context"]->org.apache.catalina.core.StandardContext["logger"]->org.apache.juli.logging.DirectJDKLog["logger"]->java.util.logging.Logger["parent"]->java.util.logging.Logger["parent"]->java.util.logging.Logger["parent"]->java.util.logging.Logger["handlers"]->org.apache.juli.AsyncFileHandler["errorManager"]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No serializer found for class java.util.logging.ErrorManager and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: com.coig.prek.webservice.utils.wrappers.ResponseWrapper$$EnhancerBySpringCGLIB$$9e771672["targetSource"]->org.springframework.aop.target.SimpleBeanTargetSource["beanFactory"]->org.springframework.beans.factory.support.DefaultListableBeanFactory["beanClassLoader"]->org.apache.catalina.loader.ParallelWebappClassLoader["resources"]->org.apache.catalina.webresources.StandardRoot["context"]->org.apache.catalina.core.StandardContext["logger"]->org.apache.juli.logging.DirectJDKLog["logger"]->java.util.logging.Logger["parent"]->java.util.logging.Logger["parent"]->java.util.logging.Logger["parent"]->java.util.logging.Logger["handlers"]->org.apache.juli.AsyncFileHandler["errorManager"])
And I actually have no idea what I am doing wrong. I tried to
@JsonIgnore
annotation with@JsonProperty
but it was no diffrence i working. So I am asking you, what I am doing wrong, that it won't serializable correctly?If the description is not enough, sorry, I don't know what else I could write about this problem.
@Edit I am returning response bean using ResponseEntity class
return new ResponseEntity<ResponseWrapper>(response, HttpStatus.OK);
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rdabrowski over 7 yearsThe problem is that when i am doing that i got "Infinite recursion" for some reason. In other hand that serialized object is never empty.
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Sachin Gupta over 7 yearsTry to remove
Autowired
from respone instance. -
rdabrowski over 7 yearsBut if I understand it corectly i will not be able to call a instance of that bean
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Sachin Gupta over 7 yearsI think response should be created by the code not by the container. So removing it should be good,