Sample project throwing NoClassDefFoundError: com/fasterxml/jackson/databind/ObjectMapper - spring-batch

Question

I have implemented the project as per https://spring.io/guides/gs/batch-processing/
But i am getting :
Error creating bean with name 'batchConfigurer': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ObjectMapper
I am new to spring-batch
Can anyone please help

Answer 1

The following is working as expected:
$>git clone https://github.com/spring-guides/gs-batch-processing.git
$>cd gs-batch-processing/complete
$>./mvnw clean install
$>./mvnw spring-boot:run
The output is the following:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.1.4.RELEASE)
2019-05-30 12:23:12.642 INFO 90644 --- [ main] hello.Application : Starting Application on localhost with PID 90644 (/private/tmp/gs-batch-processing/complete/target/classes started by mbenhassine in /private/tmp/gs-batch-processing/complete)
2019-05-30 12:23:12.646 INFO 90644 --- [ main] hello.Application : No active profile set, falling back to default profiles: default
2019-05-30 12:23:13.333 INFO 90644 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2019-05-30 12:23:13.338 WARN 90644 --- [ main] com.zaxxer.hikari.util.DriverDataSource : Registered driver with driverClassName=org.hsqldb.jdbcDriver was not found, trying direct instantiation.
2019-05-30 12:23:13.683 INFO 90644 --- [ main] com.zaxxer.hikari.pool.PoolBase : HikariPool-1 - Driver does not support get/set network timeout for connections. (feature not supported)
2019-05-30 12:23:13.687 INFO 90644 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2019-05-30 12:23:14.091 INFO 90644 --- [ main] o.s.b.c.r.s.JobRepositoryFactoryBean : No database type set, using meta data indicating: HSQL
2019-05-30 12:23:14.277 INFO 90644 --- [ main] o.s.b.c.l.support.SimpleJobLauncher : No TaskExecutor has been set, defaulting to synchronous executor.
2019-05-30 12:23:14.437 INFO 90644 --- [ main] hello.Application : Started Application in 2.114 seconds (JVM running for 5.2)
2019-05-30 12:23:14.438 INFO 90644 --- [ main] o.s.b.a.b.JobLauncherCommandLineRunner : Running default command line with: []
2019-05-30 12:23:14.503 INFO 90644 --- [ main] o.s.b.c.l.support.SimpleJobLauncher : Job: [FlowJob: [name=importUserJob]] launched with the following parameters: [{run.id=1}]
2019-05-30 12:23:14.530 INFO 90644 --- [ main] o.s.batch.core.job.SimpleStepHandler : Executing step: [step1]
2019-05-30 12:23:14.590 INFO 90644 --- [ main] hello.PersonItemProcessor : Converting (firstName: Jill, lastName: Doe) into (firstName: JILL, lastName: DOE)
2019-05-30 12:23:14.590 INFO 90644 --- [ main] hello.PersonItemProcessor : Converting (firstName: Joe, lastName: Doe) into (firstName: JOE, lastName: DOE)
2019-05-30 12:23:14.590 INFO 90644 --- [ main] hello.PersonItemProcessor : Converting (firstName: Justin, lastName: Doe) into (firstName: JUSTIN, lastName: DOE)
2019-05-30 12:23:14.590 INFO 90644 --- [ main] hello.PersonItemProcessor : Converting (firstName: Jane, lastName: Doe) into (firstName: JANE, lastName: DOE)
2019-05-30 12:23:14.590 INFO 90644 --- [ main] hello.PersonItemProcessor : Converting (firstName: John, lastName: Doe) into (firstName: JOHN, lastName: DOE)
2019-05-30 12:23:14.604 INFO 90644 --- [ main] hello.JobCompletionNotificationListener : !!! JOB FINISHED! Time to verify the results
2019-05-30 12:23:14.607 INFO 90644 --- [ main] hello.JobCompletionNotificationListener : Found <firstName: JILL, lastName: DOE> in the database.
2019-05-30 12:23:14.607 INFO 90644 --- [ main] hello.JobCompletionNotificationListener : Found <firstName: JOE, lastName: DOE> in the database.
2019-05-30 12:23:14.607 INFO 90644 --- [ main] hello.JobCompletionNotificationListener : Found <firstName: JUSTIN, lastName: DOE> in the database.
2019-05-30 12:23:14.607 INFO 90644 --- [ main] hello.JobCompletionNotificationListener : Found <firstName: JANE, lastName: DOE> in the database.
2019-05-30 12:23:14.607 INFO 90644 --- [ main] hello.JobCompletionNotificationListener : Found <firstName: JOHN, lastName: DOE> in the database.
2019-05-30 12:23:14.610 INFO 90644 --- [ main] o.s.b.c.l.support.SimpleJobLauncher : Job: [FlowJob: [name=importUserJob]] completed with the following parameters: [{run.id=1}] and the following status: [COMPLETED]
As you can see, there is no NoClassDefFoundError.

Answer 2

2 jars were corrupted , jackson-data bind and log4 .
While mvn clean install error was (invalid LOC header bad signature) in the logs but build was getting successfull hence i missed the logs.
i had to delete the folder from .m2 and then run mvn clean install this resolved the issue