问题
We are facing following exception while executing spring batch job from command line. Spring Batch Version - 3.0.2.RELEASE Spring Version - 4.0.0.RELEASE xStream version - 1.4.7 Data Base - mysql (I am connecting to new DB schema.) While executing a job using following command, I am getting below exception...
java %JAVA_OPTS% org.springframework.batch.core.launch.support.CommandLineJobRunner config/spring-config.xml partitionJdbcJob
Exception
----------
INFO: Loaded JDBC driver: com.mysql.jdbc.Driver
Feb 20, 2015 3:22:28 PM org.springframework.batch.core.launch.support.SimpleJobLauncher afterPropertiesSet
INFO: No TaskExecutor has been set, defaulting to synchronous executor.
Feb 20, 2015 3:22:29 PM org.springframework.batch.core.launch.support.SimpleJobLauncher run
INFO: Job: [FlowJob: [name=partitionJdbcJob]] launched with the following parameters: [{}]
Feb 20, 2015 3:22:29 PM org.springframework.batch.core.job.AbstractJob execute
SEVERE: Encountered fatal error executing job
org.springframework.batch.core.JobExecutionException: Flow execution ended unexpectedly
at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:140)
at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:304)
at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135)
at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50)
at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128)
at org.springframework.batch.core.launch.support.CommandLineJobRunner.start(CommandLineJobRunner.java:362)
at org.springframework.batch.core.launch.support.CommandLineJobRunner.main(CommandLineJobRunner.java:590)
Caused by: org.springframework.batch.core.job.flow.FlowExecutionException: Ended flow=partitionJdbcJob at state=partitionJdbcJob.step with exception
at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:174)
at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144)
at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:134)
... 6 more
Caused by: com.thoughtworks.xstream.converters.ConversionException: Cannot construct java.util.Map$Entry : java.util.Map$Entry : Cannot construct java.util.Map$
Entry : java.util.Map$Entry
---- Debugging information ----
message : Cannot construct java.util.Map$Entry : java.util.Map$Entry
cause-exception : com.thoughtworks.xstream.converters.reflection.ObjectAccessException
cause-message : Cannot construct java.util.Map$Entry : java.util.Map$Entry
class : java.util.Map$Entry
required-type : java.util.Map$Entry
converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter
path : /map/map/entry
line number : -1
class[1] : java.util.HashMap
converter-type[1] : com.thoughtworks.xstream.converters.collections.MapConverter
version : 1.4.7
-------------------------------
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:79)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71)
at com.thoughtworks.xstream.converters.collections.MapConverter.putCurrentEntryIntoMap(MapConverter.java:106)
at com.thoughtworks.xstream.converters.collections.MapConverter.populateMap(MapConverter.java:98)
at com.thoughtworks.xstream.converters.collections.MapConverter.populateMap(MapConverter.java:92)
at com.thoughtworks.xstream.converters.collections.MapConverter.unmarshal(MapConverter.java:87)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50)
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134)
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1185)
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1169)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1040)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:1031)
at org.springframework.batch.core.repository.dao.XStreamExecutionContextStringSerializer.deserialize(XStreamExecutionContextStringSerializer.java:112)
at org.springframework.batch.core.repository.dao.XStreamExecutionContextStringSerializer.deserialize(XStreamExecutionContextStringSerializer.java:45)
at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:322)
at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:309)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:93)
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:60)
at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:706)
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:642)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:693)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:725)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:735)
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:790)
at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao.getExecutionContext(JdbcExecutionContextDao.java:127)
at org.springframework.batch.core.repository.support.SimpleJobRepository.getLastStepExecution(SimpleJobRepository.java:238)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:262)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:95)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:207)
at $Proxy7.getLastStepExecution(Unknown Source)
at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:115)
at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64)
at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67)
at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:165)
... 8 more
Caused by: com.thoughtworks.xstream.converters.reflection.ObjectAccessException: Cannot construct java.util.Map$Entry : java.util.Map$Entry
at com.thoughtworks.xstream.converters.reflection.SunLimitedUnsafeReflectionProvider.newInstance(SunLimitedUnsafeReflectionProvider.java:80)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:553)
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:256)
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72)
... 57 more
Caused by: java.lang.InstantiationException: java.util.Map$Entry
at sun.misc.Unsafe.allocateInstance(Native Method)
at com.thoughtworks.xstream.converters.reflection.SunLimitedUnsafeReflectionProvider.newInstance(SunLimitedUnsafeReflectionProvider.java:76)
... 60 more
Spring Config
----------------
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:task="http://www.springframework.org/schema/task"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/batch http://www.springframework.org/schema/batch/spring-batch.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task-3.2.xsd">
<context:annotation-config />
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/newspringbatch?useServerPrepStmts=false&rewriteBatchedStatements=true" />
<property name="username" value="uid" />
<property name="password" value="pwd" />
</bean>
<bean id="transactionManager"
class="org.springframework.batch.support.transaction.ResourcelessTransactionManager" />
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<constructor-arg ref="pooledDS" />
</bean>
<!-- DB Pooling -->
<bean id="pool" class="org.apache.commons.pool.impl.GenericObjectPool">
<property name="minEvictableIdleTimeMillis"><value>300000</value></property>
<property name="timeBetweenEvictionRunsMillis"><value>60000</value></property>
</bean>
<bean id="dsConnectionFactory" class="org.apache.commons.dbcp.DataSourceConnectionFactory">
<constructor-arg><ref bean="dataSource"/></constructor-arg>
</bean>
<bean id="poolableConnectionFactory" class="org.apache.commons.dbcp.PoolableConnectionFactory">
<constructor-arg index="0"><ref bean="dsConnectionFactory"/></constructor-arg>
<constructor-arg index="1"><ref bean="pool"/></constructor-arg>
<constructor-arg index="2"><null/></constructor-arg>
<constructor-arg index="3"><null/></constructor-arg>
<constructor-arg index="4"><value>false</value></constructor-arg>
<constructor-arg index="5"><value>true</value></constructor-arg>
</bean>
<bean id="pooledDS" class="org.apache.commons.dbcp.PoolingDataSource" depends-on="poolableConnectionFactory">
<constructor-arg><ref bean="pool"/></constructor-arg>
</bean>
<!-- stored job-meta in database -->
<bean id="batchDefaultSerializer" class="org.springframework.batch.core.repository.dao.DefaultExecutionContextSerializer" />
<bean id="jobRepository"
class="org.springframework.batch.core.repository.support.JobRepositoryFactoryBean">
<property name="dataSource" ref="pooledDS" />
<property name="transactionManager" ref="transactionManager" />
<property name="databaseType" value="mysql" />
</bean>
<bean id="jobLauncher"
class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
<property name="jobRepository" ref="jobRepository" />
</bean>
<bean id="castorMarshaller" class="org.springframework.oxm.castor.CastorMarshaller"></bean>
<bean id="userUnmarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller"></bean>
<job id="partitionJdbcJob" restartable="true" xmlns="http://www.springframework.org/schema/batch">
<step id="step" >
<partition step="createFiles" partitioner="partitioner">
<handler grid-size="50" task-executor="taskExecutor" />
</partition>
</step>
<listeners>
<listener ref="jobDurationListener" />
</listeners>
</job>
<step id="createFiles" xmlns="http://www.springframework.org/schema/batch">
<tasklet>
<chunk reader="pagingItemReader" processor="filesItemProcessor"
writer="filesItemWriter" commit-interval="200" />
</tasklet>
</step>
<!-- PagingItemReader will be used for big records only -->
<bean id="pagingItemReader" class="org.springframework.batch.item.database.JdbcPagingItemReader"
scope="step" autowire-candidate="false">
<property name="dataSource" ref="pooledDS" />
<property name="rowMapper" ref="reconRowMapper" />
<!-- Query Provider -->
<property name="queryProvider">
<bean
class="org.springframework.batch.item.database.support.SqlPagingQueryProviderFactoryBean">
<property name="dataSource" ref="pooledDS" />
<property name="fromClause" value="from sample" />
<property name="selectClause" value="id,name" />
<property name="sortKey" value="id" />
</bean>
</property>
<!-- Inject via the ExecutionContext in partitioner -->
<property name="parameterValues">
<map>
<entry key="minId" value="#{stepExecutionContext[minValue]}" />
<entry key="maxId" value="#{stepExecutionContext[maxValue]}" />
</map>
</property>
</bean>
<bean id="filesItemProcessor" class="com.batch.job.ResultProcessor" />
<bean id="filesItemWriter" class="org.springframework.batch.item.file.FlatFileItemWriter"
scope="step">
<property name="resource" value="#{stepExecutionContext[outputFile]}" />
<property name="shouldDeleteIfExists" value="true" />
<property name="lineAggregator">
<bean
class="org.springframework.batch.item.file.transform.DelimitedLineAggregator">
<property name="delimiter" value="," />
<property name="fieldExtractor">
<bean
class="org.springframework.batch.item.file.transform.BeanWrapperFieldExtractor">
<property name="names" value="id,name" />
</bean>
</property>
</bean>
</property>
</bean>
</beans>
Feb 20, 2015 3:22:29 PM org.springframework.batch.core.launch.support.SimpleJobLauncher run
INFO: Job: [FlowJob: [name=partitionJdbcJob]] completed with the following parameters: [{}] and the following status: [FAILED]
Feb 20, 2015 3:22:29 PM org.springframework.context.support.ClassPathXmlApplicationContext doClose
INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext
@d37d44: startup date [Fri Feb 20 15:22:27 IST 2015]; root of context hierarchy
回答1:
Had same issue when running Spring Batch Job. At:
Set<JobExecution> runningJobExecutions = jobExplorer.findRunningJobExecutions(jobName);
Solved by using jettison 1.1 instead of 1.3.2
回答2:
While changing the version of the Jettison jar got rid of the error for me as well, that didn't solve the underlying problem.
In my case the ultimate cause was having two steps with the same name. Once I fixed that, the reported exception went away.
回答3:
Error message though confusing points to duplicate jobs/steps. Creating unique jobs/steps helped fix the issue for me. No other change needed.
来源：https://stackoverflow.com/questions/28627206/spring-batch-exception-cannot-construct-java-util-mapentry