Question

我有一个Spring Boot + JPA + Spring批处理（+ Spring Integration）项目。还有Flyway，配置分开。我已经将spring批处理配置为使用与默认值不同的数据源＆＃34; spring.jpa.datasource＆＃34;。这可以。在我的tasklet里面，我查询两个数据源，ds1上的第一个查询正确，ds2上的第二个查询出错：

org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is java.lang.IllegalStateException: Already value [org.springframework.jdbc.datasource.ConnectionHolder@2fb082ff] for key [HikariDataSource (HikariPool-1)] bound to thread [main]

更多细节：我有一个每个数据源的配置类，用

注释

@Configuration 
@EnableTransactionManagement
@EnableJpaRepositories

在每个配置中，使用自定义名称定义DataSource，LocalContainerEntityManagerFactoryBean和JpaTransactionManager的bean。

为每个数据源定义一个服务：

 @Service @Transactional(transactionManager=JpaApsConfiguration.APS_TRANSACTION_MANAGER, propagation = Propagation.REQUIRES_NEW)

并使用右限定符自动装配实体管理器（注意：通过JpaRepository类进行查询）

有什么可能导致此行为的建议？感谢

注意：

数据库成功连接
之前我有过不同的错误（已经修复，但可能有帮助）：＆＃39; NoUniqueBeanDefinitionException＆＃39;因为春天无法识别纠正＆＃39; PlatformTransactionManager＆＃39;在我的两笔交易之间 manager bean和默认的transactionManager。

编辑：

这里是错误的完整堆栈跟踪：

2018-05-08 12:12:24 INFO o.s.batch.core.job.SimpleStepHandler - 执行步骤：[STEP＃PROCESS_SHIPMENTS] 2018-05-08 12:12:24错误o.s.batch.core.step.AbstractStep - 在作业PROCESS_APS中遇到执行步骤＃PROCESS_SHIPMENTS的错误 org.springframework.transaction.CannotCreateTransactionException：无法打开JPA EntityManager进行事务处理;嵌套异常是java.lang.IllegalStateException：绑定到线程[main]的键[HikariDataSource（HikariPool-1）]的值[org.springframework.jdbc.datasource.ConnectionHolder@351e89fc] 在org.springframework.orm.jpa.JpaTransactionManager.doBegin（JpaTransactionManager.java:450） at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction（AbstractPlatformTransactionManager.java:378）在org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary（TransactionAspectSupport.java:474） at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction（TransactionAspectSupport.java:289）在org.springframework.transaction.interceptor.TransactionInterceptor.invoke（TransactionInterceptor.java:98）在org.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:185）在org.springframework.aop.framework.CglibAopProxy $ DynamicAdvisedInterceptor.intercept（CglibAopProxy.java:689） at dkr.astreconnector.service.GespeService $$ EnhancerBySpringCGLIB $$ 73dbb368.getValueDetailByUniq（）在dkr.astreconnector.batch.worker.ShipmentProcessor.process（ShipmentProcessor.java:63）在dkr.astreconnector.batch.worker.ShipmentProcessor.process（ShipmentProcessor.java:30）在org.springframework.batch.core.step.item.SimpleChunkProcessor.doProcess（SimpleChunkProcessor.java:126）在org.springframework.batch.core.step.item.SimpleChunkProcessor.transform（SimpleChunkProcessor.java:303）在org.springframework.batch.core.step.item.SimpleChunkProcessor.process（SimpleChunkProcessor.java:202）在org.springframework.batch.core.step.item.ChunkOrientedTasklet.execute（ChunkOrientedTasklet.java:75）在org.springframework.batch.core.step.tasklet.TaskletStep $ ChunkTransactionCallback.doInTransaction（TaskletStep.java:406）在org.springframework.batch.core.step.tasklet.TaskletStep $ ChunkTransactionCallback.doInTransaction（TaskletStep.java:330）在org.springframework.transaction.support.TransactionTemplate.execute（TransactionTemplate.java:140）在org.springframework.batch.core.step.tasklet.TaskletStep $ 2.doInChunkContext（TaskletStep.java:272）在org.springframework.batch.core.scope.context.StepContextRepeatCallback.doInIteration（StepContextRepeatCallback.java:81）在org.springframework.batch.repeat.support.RepeatTemplate.getNextResult（RepeatTemplate.java:375）在org.springframework.batch.repeat.support.RepeatTemplate.executeInternal（RepeatTemplate.java:215）在org.springframework.batch.repeat.support.RepeatTemplate.iterate（RepeatTemplate.java:145）在org.springframework.batch.core.step.tasklet.TaskletStep.doExecute（TaskletStep.java:257）在org.springframework.batch.core.step.AbstractStep.execute（AbstractStep.java:200）在org.springframework.batch.core.job.SimpleStepHandler.handleStep（SimpleStepHandler.java:148）在org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep（JobFlowExecutor.java:66）在org.springframework.batch.core.job.flow.support.state.StepState.handle（StepState.java:67）在org.springframework.batch.core.job.flow.support.SimpleFlow.resume（SimpleFlow.java:169）在org.springframework.batch.core.job.flow.support.SimpleFlow.start（SimpleFlow.java:144）在org.springframework.batch.core.job.flow.FlowJob.doExecute（FlowJob.java:136）在org.springframework.batch.core.job.AbstractJob.execute（AbstractJob.java:308）在org.springframework.batch.core.launch.support.SimpleJobLauncher $ 1.run（SimpleJobLauncher.java:141）在org.springframework.core.task.SyncTaskExecutor.execute（SyncTaskExecutor.java:50）在org.springframework.batch.core.launch.support.SimpleJobLauncher.run（SimpleJobLauncher.java:134）在org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.execute（JobLauncherCommandLineRunner.java:163）在org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.executeLocalJobs（JobLauncherCommandLineRunner.java:179）在org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.launchJobFromProperties（JobLauncherCommandLineRunner.java:134）在org.springframework.boot.autoconfigure.batch.JobLauncherCommandLineRunner.run（JobLauncherCommandLineRunner.java:128）在org.springframework.boot.SpringApplication.callRunner（SpringApplication.java:790）在org.springframework.boot.SpringApplication.callRunners（SpringApplication.java:774）在org.springframework.boot.SpringApplication.run（SpringApplication.java:335）在org.springframework.boot.SpringApplication.run（SpringApplication.java:1246）在org.springframework.boot.SpringApplication.run（SpringApplication.java:1234）在dkr.astreconnector.AstreConnectorBatchApplication.main（AstreConnectorBatchApplication.java:14）引起：java.lang.IllegalStateException：绑定到线程[main]的密钥[HikariDataSource（HikariPool-1）]的值[org.springframework.jdbc.datasource.ConnectionHolder@351e89fc] at org.springframework.transaction.support.TransactionSynchronizationManager.bindResource（TransactionSynchronizationManager.java:193）在org.springframework.orm.jpa.JpaTransactionManager.doBegin（JpaTransactionManager.java:425） ...省略了43个常用帧 2018-05-08 12:12:24 INFO osbclsupport.SimpleJobLauncher - 作业：[FlowJob：[name = PROCESS_APS]]使用以下参数完成：[{run.id = 128}]并且状态如下：[FAILED]

Answer 1

有点晚了，但我想回复@mad_fox

主数据库：

@Configuration
@EnableJpaRepositories(
    entityManagerFactoryRef = JpaAppsConfiguration.APPS_ENTITY_MANAGER,
    transactionManagerRef = "transactionManager",
    basePackages = { JpaAppsConfiguration.APPS_REPOSITORIES })
@EnableAutoConfiguration
public class JpaAppsConfiguration {

public final static String APPS_PERSISTENCE_UNIT = "apps";
public final static String APPS_DATA_SOURCE = "appDs";
public final static String APPS_ENTITY_MANAGER = "appsEmf";
public final static String APPS_TRANSACTION_MANAGER = "appsTm";
protected final static String APPS_PACKAGES = ""; //my models package
protected final static String APPS_REPOSITORIES = ""; //my repos package

@Primary
@Bean(name = APPS_DATA_SOURCE)
@ConfigurationProperties(prefix = "spring.datasource")
public DataSource appsDataSource() {
    return DataSourceBuilder.create().build();
}

@Primary
@Bean(name = APPS_ENTITY_MANAGER)
@PersistenceContext(unitName = APPS_PERSISTENCE_UNIT)
public LocalContainerEntityManagerFactoryBean appsEntityManagerFactory(EntityManagerFactoryBuilder builder,
        @Qualifier(APPS_DATA_SOURCE) DataSource appsDataSource) {
    LocalContainerEntityManagerFactoryBean emf = builder
            .dataSource(appsDataSource)
            .persistenceUnit(APPS_PERSISTENCE_UNIT)
            .packages(APPS_PACKAGES)
            .build();

    // Vendor adapter
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    emf.setJpaVendorAdapter(vendorAdapter);
    return emf;
}
}

辅助数据库：

@Configuration
@EnableJpaRepositories(
    entityManagerFactoryRef = JpaGepeConfiguration.GEPE_ENTITY_MANAGER, 
    basePackages = { JpaGepeConfiguration.GEPE_REPOSITORIES })
@EnableAutoConfiguration
public class JpaGepeConfiguration {

public static final String GEPE_PERSISTENCE_UNIT = "gn1";
public static final String GEPE_DATA_SOURCE = "gn1ds";
public static final String GEPE_ENTITY_MANAGER = "gn1emf";
public static final String GEPE_TRANSACTION_MANAGER = "gn1tm";
public static final String GEPE_PACKAGES = ""; //my models package
public static final String GEPE_REPOSITORIES = ""; //my repos package

@Bean(name = GEPE_DATA_SOURCE)
@ConfigurationProperties(prefix = "gn1.datasource")
public DataSource gepeDataSource() {
    return DataSourceBuilder.create().build();
}

@Bean(name = GEPE_ENTITY_MANAGER)
@PersistenceContext(unitName = GEPE_PERSISTENCE_UNIT)
public LocalContainerEntityManagerFactoryBean gepeEntityManagerFactory(EntityManagerFactoryBuilder builder,
        @Qualifier(GEPE_DATA_SOURCE) DataSource gepeDataSource) {
    LocalContainerEntityManagerFactoryBean emf = builder
            .dataSource(gepeDataSource)
            .persistenceUnit(GEPE_PERSISTENCE_UNIT)
            .packages(GEPE_PACKAGES)
            .build();

    // Vendor adapter
    HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
    emf.setJpaVendorAdapter(vendorAdapter);
    return emf;
}
}

@Service类中用于主数据库的方法注释为：

@Transactional(transactionManager = JpaAppsConfiguration.APPS_TRANSACTION_MANAGER, readOnly = false, propagation = Propagation.REQUIRED, noRollbackFor = Exception.class)

属性文件中的参数如下：

#DATABASE CONNECTION
#Primary
spring.datasource.username=
spring.datasource.password=
spring.datasource.driverClassName=
spring.datasource.url=j
spring.datasource.jdbcUrl=
spring.datasource.name=
#Secondary
gepe.datasource.username=
gepe.datasource.password=
gepe.datasource.driverClassName=
gepe.datasource.url=
gepe.datasource.jdbcUrl=
gepe.datasource.name=

希望这会有所帮助。

Answer 2

这是批处理配置的代码片段。确保您还覆盖了 getTransactionManager 方法。（将 qualfires 的值替换为您的值）

@Configuration
public class CustomBatchConfigurer extends DefaultBatchConfigurer {
    @Autowired
    @Qualifier("primaryDataSource")
    private DataSource dataSource;

    @Autowired
    @Qualifier("primaryTransactionManager")
    private PlatformTransactionManager transactionManager;

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

    @Override
    protected JobRepository createJobRepository() throws Exception {
        JobRepositoryFactoryBean factoryBean = new JobRepositoryFactoryBean();
        factoryBean.setIsolationLevelForCreate("ISOLATION_REPEATABLE_READ");
        factoryBean.setDataSource(dataSource);
        factoryBean.setTransactionManager(transactionManager);

        factoryBean.afterPropertiesSet();
        return factoryBean.getObject();
    }
}

Spring Boot Jpa Batch - CannotCreateTransactionException

2 个答案: