Dfyjkt

I am trying to store a JsonNode to my spring jdbc session,

while when the data is set and ready to insert to database by spring, ConversionFailedException was throw.

I tried the same as mentioned in below, but is not working though.

No converter found capable of converting from type java.lang.Object to type byte in JdbcOperationsSessionRepository .

I also look into the JdbcHttpSessionConfiguration , and seem the same code is already there.

@EnableJdbcHttpSession(maxInactiveIntervalInSeconds = 1800)
public class MyConfiguration extends WebMvcConfigurerAdapter 


// session class
@Component
@Scope(value = SCOPE_SESSION, proxyMode = TARGET_CLASS)
public class SessionForm implements Serializable 
 private String someOtherFeild;
 private JsonNode custom;
 ....


org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.Object] to type [byte] for value 'com.rakuten.payment.step.app.step.model.session.SessionForm@e943f2d'; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to serialize object using DefaultSerializer; nested exception is java.io.NotSerializableException: com.fasterxml.jackson.databind.node.ObjectNode
 at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:43)
 at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:203)
 at org.springframework.session.jdbc.JdbcOperationsSessionRepository.serialize(JdbcOperationsSessionRepository.java:627)
 at org.springframework.session.jdbc.JdbcOperationsSessionRepository.access$400(JdbcOperationsSessionRepository.java:129)
 at org.springframework.session.jdbc.JdbcOperationsSessionRepository$1$2.setValues(JdbcOperationsSessionRepository.java:403)
 at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:960)
 at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:950)
 at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:633)
 at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:662)
 at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:950)
 at org.springframework.session.jdbc.JdbcOperationsSessionRepository$1.doInTransactionWithoutResult(JdbcOperationsSessionRepository.java:395)
 at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:34)
 at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133)
 at org.springframework.session.jdbc.JdbcOperationsSessionRepository.save(JdbcOperationsSessionRepository.java:377)
 at org.springframework.session.jdbc.JdbcOperationsSessionRepository.save(JdbcOperationsSessionRepository.java:129)
 at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.commitSession(SessionRepositoryFilter.java:245)
 at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.access$100(SessionRepositoryFilter.java:217)
 at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:170)
 at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:80)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:106)
 at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
 at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
 at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
 at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
 at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
 at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455)
 at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
 at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
 at java.lang.Thread.run(Thread.java:748)

Try changing your component to:

@Component
@Scope(value = SCOPE_SESSION, proxyMode = TARGET_CLASS)
public class SessionForm implements Serializable 
 private String someOtherFeild;
 private JsonNode custom;

 private void writeObject(ObjectOutputStream out) throws IOException 
 out.defaultWriteObject();
 if(custom== null)
 out.writeBoolean(false);
 else 
 out.writeBoolean(true);
 new ObjectMapper().configure(JsonGenerator.Feature.AUTO_CLOSE_TARGET, false).writeValue(out, custom);
 
 

 private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException 
 in.defaultReadObject();
 if(in.readBoolean())
 this.custom = new ObjectMapper().configure(JsonParser.Feature.AUTO_CLOSE_SOURCE, false).readValue(in, JsonNode.class);
 
 

This will change the default serialization, allowing you to override the default behaviour and work around this error

Reference