原因：java.lang.IllegalArgumentException：无法反序列化Spring Batch中的执行上下文

Question

我正在开发基于Spring Boot + Batch XML的方法。在此示例中，我创建了以下类。当我简单地加载或分类Spring Batch Job时。我收到以下错误。

我在网络上搜索Migration to Spring Boot 2 and using Spring Batch 4之类的链接，但并不能解决我的问题。

任何人都可以在这里指导需要使用的确切解决方案吗？

错误：

Caused by: java.lang.IllegalArgumentException: Unable to deserialize the execution context
    at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:325) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:309) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:93) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:60) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:667) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:605) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:657) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:688) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:700) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:756) ~[spring-jdbc-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao.getExecutionContext(JdbcExecutionContextDao.java:112) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.batch.core.explore.support.SimpleJobExplorer.getJobExecutionDependencies(SimpleJobExplorer.java:202) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.batch.core.explore.support.SimpleJobExplorer.getJobExecutions(SimpleJobExplorer.java:83) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_162]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_162]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_162]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_162]
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:197) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.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-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.0.8.RELEASE.jar:5.0.8.RELEASE]
    at com.sun.proxy.$Proxy70.getJobExecutions(Unknown Source) ~[na:na]
    at org.springframework.batch.core.JobParametersBuilder.getNextJobParameters(JobParametersBuilder.java:264) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.execute(JobLauncherCommandLineRunner.java:162) ~[spring-boot-autoconfigure-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.executeLocalJobs(JobLauncherCommandLineRunner.java:179) ~[spring-boot-autoconfigure-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.launchJobFromProperties(JobLauncherCommandLineRunner.java:134) ~[spring-boot-autoconfigure-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.run(JobLauncherCommandLineRunner.java:128) ~[spring-boot-autoconfigure-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:800) [spring-boot-2.0.4.RELEASE.jar:2.0.4.RELEASE]
    ... 5 common frames omitted
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Unexpected token (START_OBJECT), expected VALUE_STRING: need JSON String that contains type id (for subtype of java.lang.Object)
 at [Source: (ByteArrayInputStream); line: 1, column: 9] (through reference chain: java.util.HashMap["map"])
    at com.fasterxml.jackson.databind.exc.MismatchedInputException.from(MismatchedInputException.java:59) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.DeserializationContext.wrongTokenException(DeserializationContext.java:1498) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.DeserializationContext.reportWrongTokenException(DeserializationContext.java:1273) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._locateTypeId(AsArrayTypeDeserializer.java:151) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:96) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromAny(AsArrayTypeDeserializer.java:71) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.deser.std.UntypedObjectDeserializer$Vanilla.deserializeWithType(UntypedObjectDeserializer.java:712) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.deser.std.MapDeserializer._readAndBindStringKeyMap(MapDeserializer.java:529) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:364) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:29) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4013) ~[jackson-databind-2.9.6.jar:2.9.6]
    at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3077) ~[jackson-databind-2.9.6.jar:2.9.6]
    at org.springframework.batch.core.repository.dao.Jackson2ExecutionContextStringSerializer.deserialize(Jackson2ExecutionContextStringSerializer.java:70) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.batch.core.repository.dao.Jackson2ExecutionContextStringSerializer.deserialize(Jackson2ExecutionContextStringSerializer.java:50) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:322) ~[spring-batch-core-4.0.1.RELEASE.jar:4.0.1.RELEASE]
    ... 34 common frames omitted

CommonConfig.java

@Configuration
@ComponentScan("com.XXXX")
@EnableBatchProcessing
@EnableScheduling
@PropertySource("classpath:database.properties")
@ImportResource({ "classpath:jobs/XYZ.xml"})
public class CommonConfig {
    @Bean
    BatchConfigurer configurer(@Qualifier("dataSource") DataSource dataSource) {
        return new DefaultBatchConfigurer(dataSource);
    }
}

XYZ.xml

<bean id="databaseConfig" class="com.XX.config.DatabaseConfig" />

    <bean id="transactionManager" class="org.springframework.batch.support.transaction.ResourcelessTransactionManager" />

    <bean id="job_Repository" class="org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean">
        <property name="transactionManager" ref="transactionManager" />
    </bean>

    <bean id="jobLauncher" class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
        <property name="jobRepository" ref="job_Repository" />
    </bean>

    <bean id="stepScope" class="org.springframework.batch.core.scope.StepScope">
        <property name="autoProxy" value="true"/>
    </bean>

    <batch:job id="myXYZBatchJob">
        <batch:step id="XYZContextStep" >
            <batch:tasklet ref=XYZContextTasklet" />
        </batch:step>
    </batch:job>
    ......
    ........
</bean>

DatabaseConfig.java

@Configuration
@EnableTransactionManagement
@ComponentScan({ "com.XXX" })
@EnableJpaRepositories(basePackages = {"com.XX.repository", "com.XX.custom.repository"}, 
                        entityManagerFactoryRef = "entityManagerFactory", 
                        transactionManagerRef = "transactionManager")
public class DatabaseConfig {
    @Bean
    @Primary
    @ConfigurationProperties("abc.datasource")
    public DataSourceProperties dataSourceProperties() {
        return new DataSourceProperties();
    }

    @Primary
    @Bean(name = "dataSource")
    @ConfigurationProperties(prefix = "abc.datasource")
    public DataSource dataSource() {
        return dataSourceProperties().initializeDataSourceBuilder().build();
    }

    @Primary
    @Bean(name = "entityManagerFactory")
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(@Qualifier("dataSource") DataSource dataSource) {

        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource);
        em.setPackagesToScan(new String[] { "com.XX.Entity" });
        em.setPersistenceUnitName("devcloud");

        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        em.setJpaVendorAdapter(vendorAdapter);
        return em;
    }

    @Primary
    @Bean(name = "transactionManager")
    public PlatformTransactionManager transactionManager(@Qualifier("entityManagerFactory") EntityManagerFactory entityManagerFactory) {
        return new JpaTransactionManager(entityManagerFactory);
    }
}

EDIT-1： 我正在使用最新的Spring Boot Parent版本2.0.4.RELEASE。它将拉出所有Spring版本，包括5.0.8.RELEASE的Context版本。

要求您发布代码段和详细说明以支持您的答案。

编辑2：

public class BillingConfig implements BatchConfigurer{

    private PlatformTransactionManager transactionManager;
    private JobRepository jobRepository;
    private JobLauncher jobLauncher;
    private JobExplorer jobExplorer;

    @Override
    public JobRepository getJobRepository() {
        return jobRepository;
    }

    @Override
    public PlatformTransactionManager getTransactionManager() {
        return transactionManager;
    }

    @Override
    public JobLauncher getJobLauncher() throws JobExecutionAlreadyRunningException, JobRestartException, JobInstanceAlreadyCompleteException, JobParametersInvalidException {
        return jobLauncher;
    }

    @Override
    public JobExplorer getJobExplorer() {
        return jobExplorer;
    }

    @PostConstruct
    void initialize() throws Exception {
        if (this.transactionManager == null) {
            this.transactionManager = new ResourcelessTransactionManager();
        }

        // A FactoryBean that automates the creation of a SimpleJobRepository using non-persistent in-memory DAO implementations. 
        MapJobRepositoryFactoryBean jobRepositoryFactory = new MapJobRepositoryFactoryBean(this.transactionManager);
        jobRepositoryFactory.afterPropertiesSet();
        this.jobRepository = jobRepositoryFactory.getObject();

        // A FactoryBean that automates the creation of a SimpleJobRepository using non-persistent in-memory DAO implementations. 
        MapJobExplorerFactoryBean jobExplorerFactory = new MapJobExplorerFactoryBean(jobRepositoryFactory);
        jobExplorerFactory.afterPropertiesSet();
        this.jobExplorer = jobExplorerFactory.getObject();
        this.jobLauncher = createJobLauncher();
    }

    private JobLauncher createJobLauncher() throws Exception {
        SimpleJobLauncher simpleJobLauncher = new SimpleJobLauncher();
        simpleJobLauncher.setJobRepository(jobRepository);
        simpleJobLauncher.afterPropertiesSet();
        return simpleJobLauncher;
    }
}

Answer 1

当作业的执行上下文使用版本3（默认情况下使用XStream进行序列化，然后使用版本4（默认情况下使用Jackson进行反序列化时，会发生此错误。因此，要么将Spring Batch降级到版本3，要么将您的作业存储库配置为使用XStreamExecutionContextStringSerializer。

在您的情况下，您已经定义了BatchConfigurer类型的bean，因此可以覆盖createJobRepository方法并配置XStream序列化程序。例如：

@Bean
BatchConfigurer configurer(@Qualifier("dataSource") DataSource dataSource, PlatformTransactionManager transactionManager) {
    return new DefaultBatchConfigurer(dataSource) {
        @Override
        protected JobRepository createJobRepository() throws Exception {
            JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
            factory.setDataSource(dataSource);
            factory.setTransactionManager(transactionManager);
            factory.setSerializer(new XStreamExecutionContextStringSerializer());
            factory.afterPropertiesSet();
            return factory.getObject();
        }
    };
}

Answer 2

尝试清理弹簧批处理表。 使用以下链接： -清洗弹簧批表---- http://forum.spring.io/forum/spring-projects/batch/122103-clean-spring-batch-metadata-tables

Answer 3

由于XStreamExecutionContextStringSerializer在最新的Spring BATCH版本中已弃用。

如果要向Execution Context添加复杂对象，请检查您要添加的对象是否为Serializable。

例如，如果您的班级看起来像：

class Sample{
String data;
List<DataItem> dataItems;

}

确保对象中存在的DataItem也是Serializable。

这帮助我解决了问题。