Getting com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException when using JsonItemReader with JacksonJsonObjectReader - jackson

Question

I am facing an issue with spring batch JsonItemReader, getting the above error when trying to read from json file.
JsonItemReader configuration
#Autowired
private ObjectMapper objectMapper;
#StepScope
#Bean
public JsonItemReader<CustomerDTO> customerItemReader(){
return new JsonItemReaderBuilder<CustomerDTO>()
.jsonObjectReader(new JacksonJsonObjectReader<>(objectMapper,CustomerDTO.class))
.resource(new FileSystemResource(customerFilePath))
.name("jsonCustomerItemReader")
.build();
}
DTO
#Data
public class CustomerDTO {
private int id;
private String firstName;
private String lastName;
private String gender;
private String contactNo;
private String country;
private String dob;
}
Json Sample
[
{
"id": 372,
"firstName": "Jessie",
"lastName": "Campos",
"gender": "female",
"contactNo": "[phone]",
"country": "Poland",
"dob": "2017-04-03T11:15:53 -08:00"
}
]
Stacktrace
As seen here, the error states that the id is not found in the CustomerDTO object. Not sure why I am getting the error.
org.springframework.batch.item.ParseException: Unable to read next
JSON object at
org.springframework.batch.item.json.JacksonJsonObjectReader.read(JacksonJsonObjectReader.java:90)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.item.json.JsonItemReader.doRead(JsonItemReader.java:110)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader.read(AbstractItemCountingItemStreamItemReader.java:93)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader$$FastClassBySpringCGLIB$$ebb633d0.invoke()
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
~[spring-core-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:137)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:124)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.batch.item.json.JsonItemReader$$EnhancerBySpringCGLIB$$299546ea.read()
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.item.SimpleChunkProvider.doRead(SimpleChunkProvider.java:99)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.item.SimpleChunkProvider.read(SimpleChunkProvider.java:180)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.item.SimpleChunkProvider$1.doInIteration(SimpleChunkProvider.java:126)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:375)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:145)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.item.SimpleChunkProvider.provide(SimpleChunkProvider.java:118)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:71)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:407)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:331)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140)
~[spring-tx-5.3.23.jar:5.3.23] at
org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:273)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:82)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:375)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:145)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:258)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:208)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:152)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.job.AbstractJob.handleStep(AbstractJob.java:413)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.job.SimpleJob.doExecute(SimpleJob.java:136)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:320)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:149)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
~[spring-core-5.3.23.jar:5.3.23] at
org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:140)
~[spring-batch-core-4.3.7.jar:4.3.7] at
java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
~[na:na] at
java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:344)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:198)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:128)
~[spring-batch-core-4.3.7.jar:4.3.7] at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
~[spring-aop-5.3.23.jar:5.3.23] at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215)
~[spring-aop-5.3.23.jar:5.3.23] at
jdk.proxy2/jdk.proxy2.$Proxy93.run(Unknown Source) ~[na:na] at
org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.execute(JobLauncherApplicationRunner.java:199)
~[spring-boot-autoconfigure-2.7.4.jar:2.7.4] at
org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.executeLocalJobs(JobLauncherApplicationRunner.java:173)
~[spring-boot-autoconfigure-2.7.4.jar:2.7.4] at
org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.launchJobFromProperties(JobLauncherApplicationRunner.java:160)
~[spring-boot-autoconfigure-2.7.4.jar:2.7.4] at
org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.run(JobLauncherApplicationRunner.java:155)
~[spring-boot-autoconfigure-2.7.4.jar:2.7.4] at
org.springframework.boot.autoconfigure.batch.JobLauncherApplicationRunner.run(JobLauncherApplicationRunner.java:150)
~[spring-boot-autoconfigure-2.7.4.jar:2.7.4] at
org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:762)
~[spring-boot-2.7.4.jar:2.7.4] at
org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:752)
~[spring-boot-2.7.4.jar:2.7.4] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
~[spring-boot-2.7.4.jar:2.7.4] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
~[spring-boot-2.7.4.jar:2.7.4] at
org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
~[spring-boot-2.7.4.jar:2.7.4] at
com.example.BatchApplication.main(BatchApplication.java:11)
~[classes/:na] Caused by:
com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException:
Unrecognized field "id" (class com.example.batch.dto.CustomerDTO), not
marked as ignorable (0 known properties: ]) at [Source:
(sun.nio.ch.ChannelInputStream); line: 3, column: 14] (through
reference chain: com.example.batch.dto.CustomerDTO["id"]) at
com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:61)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.DeserializationContext.handleUnknownProperty(DeserializationContext.java:1127)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:2023)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1700)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownVanilla(BeanDeserializerBase.java:1678)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:320)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:177)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:323)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.ObjectMapper._readValue(ObjectMapper.java:4650)
~[jackson-databind-2.13.4.jar:2.13.4] at
com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2831)
~[jackson-databind-2.13.4.jar:2.13.4] at
org.springframework.batch.item.json.JacksonJsonObjectReader.read(JacksonJsonObjectReader.java:87)
~[spring-batch-infrastructure-4.3.7.jar:4.3.7] ... 58 common frames
omitted
UPDATE (Workaround)
After a few hours of debugging, It seems that if I don't use lombok #Data annotation and generate the getters and setters its working. Also if I annotate my DTO with #JsonProperty("") its also able to work. Is there a configuration for jackson which I am missing?

Answer 1

Seems that I was missing annotationProcessorPath for lombok in my maven compiler plugin. After updating it to below was able to use the JacksonJsonObjectReader with #Data annotation from lombok.
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>19</source>
<target>19</target>
<annotationProcessorPaths>
<path>
<groupId>org.mapstruct</groupId>
<artifactId>mapstruct-processor</artifactId>
<version>${version.mapstruct}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>${version.lombok}</version>
</path>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok-mapstruct-binding</artifactId>
<version>${version.mapstruct-lombok}</version>
</path>
</annotationProcessorPaths>
</configuration>