我在使用 Spring Batch 2.1.9 时遇到问题: 当我使用 jobExplorer.getJobExecution(jobExecutionId) 时,我发现 DAO 必须反序列化字符串时出现问题,例如:
{"map":[{"entry":{"string":"parsedComparingDate","date":"2014-03-08 23:00:00.0 UTC"}}]}
来自 BATCH_JOB_EXECUTION_CONTEXT 表,使用方法 JdbcJobExecutionDao.getJobExecution()
。
我知道 spring batch 使用 xstream 1.3,但在我的 Pom 中,我有:
- spring-batch 2.1.9;
- xstream 1.4.1(继承自smooks);
- jettison 1.3.3(继承自cxf);
另外,我读到 xstream 1.3 不能与 jettison 1.3.3 一起正常工作,但是使用 xstream 1.3(不包括 pom 中的 xstream 1.4.1)工作正常,而使用 xstream 1.4.1 或 major,我发现以下异常:
Caused by: java.lang.InstantiationError: java.util.Map$Entry
at sun.reflect.GeneratedSerializationConstructorAccessor1.newInstance(Unknown Source) [:1.6.0_23]
at java.lang.reflect.Constructor.newInstance(Constructor.java:513) [rt.jar:1.6.0_23]
at com.thoughtworks.xstream.converters.reflection.Sun14ReflectionProvider.newInstance(Sun14ReflectionProvider.java:75) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.instantiateNewInstance(AbstractReflectionConverter.java:424) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter.unmarshal(AbstractReflectionConverter.java:229) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.collections.AbstractCollectionConverter.readItem(AbstractCollectionConverter.java:71) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.collections.MapConverter.putCurrentEntryIntoMap(MapConverter.java:85) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.collections.MapConverter.populateMap(MapConverter.java:77) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.collections.MapConverter.populateMap(MapConverter.java:71) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.converters.collections.MapConverter.unmarshal(MapConverter.java:66) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(TreeUnmarshaller.java:72) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.AbstractReferenceUnmarshaller.convert(AbstractReferenceUnmarshaller.java:65) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:66) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.convertAnother(TreeUnmarshaller.java:50) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.TreeUnmarshaller.start(TreeUnmarshaller.java:134) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.core.AbstractTreeMarshallingStrategy.unmarshal(AbstractTreeMarshallingStrategy.java:32) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1035) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.XStream.unmarshal(XStream.java:1019) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:895) [xstream-1.4.1.jar:]
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:886) [xstream-1.4.1.jar:]
at org.springframework.batch.core.repository.dao.XStreamExecutionContextStringSerializer.deserialize(XStreamExecutionContextStringSerializer.java:48) [spring-batch-core-2.1.9.RELEASE.jar:]
at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:222) [spring-batch-core-2.1.9.RELEASE.jar:]
at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao$ExecutionContextRowMapper.mapRow(JdbcExecutionContextDao.java:215) [spring-batch-core-2.1.9.RELEASE.jar:]
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:92) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.RowMapperResultSetExtractor.extractData(RowMapperResultSetExtractor.java:60) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate$1.doInPreparedStatement(JdbcTemplate.java:649) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:587) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:637) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:666) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:674) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:714) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.simple.SimpleJdbcTemplate.query(SimpleJdbcTemplate.java:202) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.jdbc.core.simple.SimpleJdbcTemplate.query(SimpleJdbcTemplate.java:209) [org.springframework.jdbc-3.2.1.RELEASE.jar:3.2.1.RELEASE]
at org.springframework.batch.core.repository.dao.JdbcExecutionContextDao.getExecutionContext(JdbcExecutionContextDao.java:106) [spring-batch-core-2.1.9.RELEASE.jar:]
1) 我看过代码,我可以配置 XStreamExecutionContextStringSerializer 以设置 reflectionProvider = null(这样,它就不会使用 Provider)?
2) 还有其他解决方案可以解决我的问题吗?
谢谢
最佳答案
我不可能更改 xstream 版本和 jettison 版本,因为它们是由其他组件(如 smooks)导入的。
一个可能的解决方案是创建两个不同的 JBoss 模块 并一起使用它们。
所以,我找到了另一个解决方案:使用 spring-batch 2.2.0.RELEASE,并使用 org.springframework.batch.core.repository.dao.DefaultExecutionContextSerializer
作为序列化程序而不是 XStream。
配置下方:
<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="dataSource" />
<property name="transactionManager" ref="batchTransactionManager" />
<property name="lobHandler" ref="defaultLobHandler" />
<property name="serializer" ref="batchDefaultSerializer" />
</bean>
<bean id="jobExplorer"
class="org.springframework.batch.core.explore.support.JobExplorerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="serializer" ref="batchDefaultSerializer" />
</bean>
我测试了它,它工作正常,所以,我认为这是最好的解决方案。
关于java - Spring Batch,JdbcExecutionContextDao java.util.Map$Entry 解串器问题,xstream 1.4.1,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22306080/