2018-06-21 22:30:30.528 ERROR 6992 --- [  restartedMain] o.s.batch.core.step.AbstractStep         : Encountered an error executing step step1 in job importUserJob
org.springframework.batch.item.file.FlatFileParseException: Parsing error at line: 1 in resource=[class path resource [sample-data.csv]], input=[Jill,Doe] at org.springframework.batch.item.file.FlatFileItemReader.doRead(FlatFileItemReader.java:184) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.item.support.AbstractItemCountingItemStreamItemReader.read(AbstractItemCountingItemStreamItemReader.java:89) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProvider.doRead(SimpleChunkProvider.java:91) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProvider.read(SimpleChunkProvider.java:157) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProvider$1.doInIteration(SimpleChunkProvider.java:116) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:375) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:145) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.item.SimpleChunkProvider.provide(SimpleChunkProvider.java:110) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute(ChunkOrientedTasklet.java:69) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:406) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep$ChunkTransactionCallback.doInTransaction(TaskletStep.java:330) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:140) ~[spring-tx-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep$2.doInChunkContext(TaskletStep.java:272) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration(StepContextRepeatCallback.java:81) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.getNextResult(RepeatTemplate.java:375) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.executeInternal(RepeatTemplate.java:215) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.repeat.support.RepeatTemplate.iterate(RepeatTemplate.java:145) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.tasklet.TaskletStep.doExecute(TaskletStep.java:257) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:200) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:66) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:169) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:136) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:308) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:141) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:134) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343) [spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:197) [spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) [spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration$PassthruAdvice.invoke(SimpleBatchConfiguration.java:127) [spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) [spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) [spring-aop-5.0.7.RELEASE.jar:5.0.7.RELEASE] at com.sun.proxy.$Proxy71.run(Unknown Source) [na:na] at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.execute(JobLauncherCommandLineRunner.java:163) [spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.executeLocalJobs(JobLauncherCommandLineRunner.java:179) [spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.launchJobFromProperties(JobLauncherCommandLineRunner.java:134) [spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.run(JobLauncherCommandLineRunner.java:128) [spring-boot-autoconfigure-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:797) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:781) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:335) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.3.RELEASE.jar:2.0.3.RELEASE] at com.restful.restfuldemo.RestfuldemoApplication.main(RestfuldemoApplication.java:10) [classes/:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171] at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171] at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.3.RELEASE.jar:2.0.3.RELEASE]
Caused by: java.lang.reflect.UndeclaredThrowableException: null at org.springframework.util.ReflectionUtils.handleReflectionException(ReflectionUtils.java:295) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE] at org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper.getBean(BeanWrapperFieldSetMapper.java:250) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper.mapFieldSet(BeanWrapperFieldSetMapper.java:196) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.item.file.mapping.DefaultLineMapper.mapLine(DefaultLineMapper.java:43) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] at org.springframework.batch.item.file.FlatFileItemReader.doRead(FlatFileItemReader.java:180) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] ... 55 common frames omitted
Caused by: java.lang.InstantiationException: com.restful.restfuldemo.hello.Person at java.lang.Class.newInstance(Class.java:427) ~[na:1.8.0_171] at org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper.getBean(BeanWrapperFieldSetMapper.java:247) ~[spring-batch-infrastructure-4.0.1.RELEASE.jar:4.0.1.RELEASE] ... 58 common frames omitted
Caused by: java.lang.NoSuchMethodException: com.restful.restfuldemo.hello.Person.<init>() at java.lang.Class.getConstructor0(Class.java:3082) ~[na:1.8.0_171] at java.lang.Class.newInstance(Class.java:412) ~[na:1.8.0_171]

... 59 common frames omitted

出错的原因是Person类中缺少无参构造函数

public class Person {
    private String lastName;
    private String firstName;
    public String getLastName() {
        return lastName;
    public void setLastName(String lastName) {
        this.lastName = lastName;
    public String getFirstName() {
        return firstName;
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    public Person(String lastName, String firstName) {
        this.lastName = lastName;
        this.firstName = firstName;
    public Person() {
        super();
    @Override
    public String toString() {
        return "Person{" +
                "lastName='" + lastName + '\'' +
                ", firstName='" + firstName + '\'' +
                '}';
}

补上红色部分就好了 2018-06-21 22:30:30.528 ERROR 6992 --- [  restartedMain] o.s.batch.core.step.AbstractStep         : Encountered an error executing step step1 in job importUserJoborg.springframework.batch.item.file.Fl...