[英]IllegalTransactionStateException Pre-bound JDBC Connection found when configuring multiple datasources
I have a spring batch project wherein I read data from a datasource , process the data and write into another primary data source. 我有一个Spring Batch项目,其中我从一个数据源读取数据,处理该数据并写入另一个主数据源。 I am extending
CrudRepository
for dao operations. 我正在将
CrudRepository
扩展到dao操作。
I am trying to configure multiple datasources for my springbatch + spring boot application below is the package structure : 我正在尝试为我的springbatch + spring boot应用程序配置多个数据源,以下是软件包结构:
myproject
---com
---batch
---config
---firstDsConfig.java
---secondDsConfig.java
---firstrepository
---firstCrudRepository.java
---secondRepository
---SecondCrudRepository.java
---firstEntity
---firstDBEntity.java
---secondEntity
---secondDBEntity.java
----main
---MyMainClass.java
Code for firstDsConfig.java: firstDsConfig.java的代码:
@Configuration
@EnableJpaRepositories(
entityManagerFactoryRef = "firstEntityManagerFactory",
transactionManagerRef = "firstTransactionManager",
basePackages = "com.batch.firstrepository"
)
@EnableTransactionManagement
public class FirstDbConfig {
@Primary
@Bean(name = "firstEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean firstEntityManagerFactory(final EntityManagerFactoryBuilder builder,
final @Qualifier("firstDs") DataSource dataSource) {
return builder
.dataSource(dataSource)
.packages("com.batch.firstEntity")
.persistenceUnit("abc")
.build();
}
@Primary
@Bean(name = "firstTransactionManager")
public PlatformTransactionManager firstTransactionManager(@Qualifier("firstEntityManagerFactory")
EntityManagerFactory firstEntityManagerFactory) {
return new JpaTransactionManager(firstEntityManagerFactory);
}
@Primary
@Bean(name = "firstDs")
@ConfigurationProperties(prefix = "spring.datasource.first")
public DataSource firstDataSource() {
return DataSourceBuilder.create().build();
}
}
Code for secondDsConfig: secondDsConfig的代码:
@Configuration
@EnableJpaRepositories(
entityManagerFactoryRef = "secondEntityManagerFactory",
transactionManagerRef = "secondTransactionManager",
basePackages = "com.batch.secondrepository"
)
@EnableTransactionManagement
public class FirstDbConfig {
@Primary
@Bean(name = "secondEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean secondEntityManagerFactory(final EntityManagerFactoryBuilder builder,
final @Qualifier("secondDs") DataSource dataSource) {
return builder
.dataSource(dataSource)
.packages("com.batch.secondEntity")
.persistenceUnit("xyz")
.build();
}
@Primary
@Bean(name = "secondTransactionManager")
public PlatformTransactionManager secondTransactionManager(@Qualifier("secondEntityManagerFactory")
EntityManagerFactory firstEntityManagerFactory) {
return new JpaTransactionManager(secondEntityManagerFactory);
}
@Primary
@Bean(name = "secondDs")
@ConfigurationProperties(prefix = "spring.datasource.second")
public DataSource secondDataSource() {
return DataSourceBuilder.create().build();
}
}
Here is my main class 这是我的主班
@EnableScheduling
@EnableBatchProcessing
@SpringBootApplication(scanBasePackages = { "com.batch" })
public class MyMainClass {
@Autowired
private JobLauncher jobLauncher;
@Autowired
private JobRepository jobRepository;
@Autowired
@Qualifier(firstDs)
private DataSource dataSource;
@Autowired
@Qualifier("myJob")
private Job job;
public static void main(String[] args) throws Exception {
SpringApplication.run(MyMainClass.class, args);
}
@EventListener(ApplicationReadyEvent.class)
private void start() throws Exception {
jobLauncher.run(job, new JobParameters());
}
@Bean(name="jobService")
public JobService jobService() throws Exception {
SimpleJobServiceFactoryBean factoryBean = new SimpleJobServiceFactoryBean();
factoryBean.setDataSource(dataSource);
factoryBean.setJobRepository(jobRepository);
factoryBean.setJobLocator(new MapJobRegistry());
factoryBean.setJobLauncher(jobLauncher);
factoryBean.afterPropertiesSet();
return factoryBean.getObject();
}
}
Here are the crud repo: 这是原始回购协议:
First curd repo 第一凝乳回购
public interface FirstCrudRepository extends CrudRepository<FirstDbEntity, Integer> {
List<FirstDbEntity> findByOId(String oId);
}
Second curd repo 第二个凝乳回购
public interface SecondCrudRepository extends CrudRepository<SecondDbEntity, Integer> {
List<SecondDbEntity> findByPid(String pid);
}
When I run my application I see following error while saving record using FirstCrudRepository: 当我运行应用程序时,使用FirstCrudRepository保存记录时看到以下错误:
org.springframework.transaction.IllegalTransactionStateException: Pre-bound JDBC Connection found! JpaTransactionManager does not support running within DataSourceTransactionManager if told to manage the DataSource itself. It is recommended to use a single JpaTransactionManager for all transactions on a single DataSource, no matter whether JPA or JDBC access.
Note: I am able to fetch details successfully from SecondCrudRepository 注意:我能够从SecondCrudRepository成功获取详细信息
By default, if you provide a DataSource
, Spring Batch will use a DataSourceTransactionManager
which knows nothing about your JPA configuration. 默认情况下,如果您提供
DataSource
,Spring Batch将使用DataSourceTransactionManager
,它对您的JPA配置一无所知。 You need to tell Spring Batch to use your JpaTransactionManager
. 您需要告诉Spring Batch使用您的
JpaTransactionManager
。 This is explained in the: 对此进行了解释:
@EnableBatchProcessing
: https://docs.spring.io/spring-batch/4.1.x/api/org/springframework/batch/core/configuration/annotation/EnableBatchProcessing.html @EnableBatchProcessing
Javadoc: https : @EnableBatchProcessing
I suspect there are 2 different transaction managers present which would be causing issue. 我怀疑有2个不同的事务管理器会引起问题。 Annotate with @Transactional and specifying the transaction manager would help
用@Transactional注释并指定事务管理器将有所帮助
Source: 资源:
Spring - Is it possible to use multiple transaction managers in the same application? 春季-是否可以在同一应用程序中使用多个事务管理器?
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