使用@Lazy注解解决循环依赖关系。

示例代码：

@Configuration @EnableBatchProcessing public class BatchConfig {

@Autowired
private JobBuilderFactory jobBuilderFactory;

@Autowired
private StepBuilderFactory stepBuilderFactory;

@Autowired
private DataSource dataSource;

@Autowired
private LocalContainerEntityManagerFactoryBean entityManagerFactory;

@Bean
public ItemReader reader() {
    //...
}

@Bean
public ItemProcessor processor() {
    //...
}

@Bean
public ItemWriter writer() {
    //...
}

@Bean
public JobExecutionListener listener() {
    //...
}

@Bean
@Lazy
public Job someJob() {
    return jobBuilderFactory.get("someJob")
            .incrementer(new RunIdIncrementer())
            .listener(listener())
            .flow(step1())
            .end()
            .build();
}

@Bean
public Step step1() {
    return stepBuilderFactory.get("step1")
            . chunk(10)
            .reader(reader())
            .processor(processor())
            .writer(writer())
            .build();
}

@Bean
@Lazy
public BatchDataSourceInitializer batchDataSourceInitializer() {
    return new BatchDataSourceInitializer(dataSource, entityManagerFactory.getObject());
}

}

在这个示例代码中，我们使用了@Lazy注解来解决循环依赖关系。这样，在应用程序启动之后，只有第一次使用batchDataSourceInitializer和entityManagerFactory时才会创建它们。在此之前，就不会创建它们。这可以避免循环依赖关系。