1.如果nextStep在该JOB中还没有配置，也就是说nextStep还不存在的情况下，就会报错
<end on="EIXT WITH IMBALANCE" />
<next on="BALANCED" to="nextStep" />
<fail on="*" />
Caused by: java.lang.IllegalArgumentException: Missing state for [StateTransition: [state=bain_Job.bainToTableStep, pattern=BALANCED, next=bain_Job.trustAcctBatPayStep]]
at org.springframework.batch.core.job.flow.support.SimpleFlow.initializeTransitions(SimpleFlow.java:283) ~[spring-batch-core-3.0.0.RELEASE.jar:3.0.0.RELEASE]
at org.springframework.batch.core.job.flow.support.SimpleFlow.afterPropertiesSet(SimpleFlow.java:128) ~[spring-batch-core-3.0.0.RELEASE.jar:3.0.0.RELEASE]
at org.springframework.batch.core.configuration.xml.SimpleFlowFactoryBean.getObject(SimpleFlowFactoryBean.java:125) ~[spring-batch-core-3.0.0.RELEASE.jar:3.0.0.RELEASE]
at org.springframework.batch.core.configuration.xml.SimpleFlowFactoryBean.getObject(SimpleFlowFactoryBean.java:46) ~[spring-batch-core-3.0.0.RELEASE.jar:3.0.0.RELEASE]
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168) ~[spring-beans-4.1.5.RELEASE.jar:4.1.5.RELEASE]
... 42 common frames omitted