没有配置流
今天用到一个配置,我当时没有注册进入两个流,
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运行的时候,发现这个错误
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org.springframework.batch.item.WriterNotOpenException: Writer must be open before it can be written to
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Converted from a single FlatFileItemWriter to a database and flatfileitemwriter and didn't register the flatfile one as a stream.
If using a single FlatFileItemWriter it is enough to register it as an ItemWriter however when using the composite the adding it as a stream is also needed.
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所以必须配置
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<chunk reader="heterogeneousItemReader" writer="reterogeneousItemWriter"
commit-interval="1" >
<streams>
? ? ? ? ? ? ? ? ? ? ? ?<stream ref="studentwriter" />
? ? ? ? ? ? ? ? ? ? ? ?<stream ref="goodswriter" />
? ? ? ? ? ? ? ? ? ? </streams>
</chunk>
