[英]Passing arguments from BatchJob to Tasklet in Spring Batch
對於所有春季發燒友來說,這是一個很好的挑戰。 希望有人可以破解!!!
我使用Spring批處理提取過程。 我有兩個類'ExtractBatchJob'和'TaskletImpl'
public class ExtractBatchJob {
/** Logger for current class */
private static Log log = LogFactory.getLog(Extractor.class);
public static void main(String[] args)
throws IOrganizationServiceRetrieveMultipleOrganizationServiceFaultFaultFaultMessage,
IOException {
ApplicationContext context = new ClassPathXmlApplicationContext(
"/META-INF/cxf/batch-context.xml");
SpringBusFactory factory = new SpringBusFactory(context);
Bus bus = factory.createBus();
SpringBusFactory.setDefaultBus(bus);
IOrganizationService service = (IOrganizationService) factory
.getApplicationContext().getBean("service");
JobLauncher jobLauncher = (JobLauncher)context.getBean("jobLauncher");
Job job = (Job) context.getBean("firstBatchJob");
try {
JobExecution execution = jobLauncher.run(job, new JobParameters());
}catch (Exception e){
e.printStackTrace();
}
}
第二類TaskletImpl實現Spring Tasklet接口。
public class TaskletImpl implements Tasklet {
/** Logger for current class */
private static Log log = LogFactory.getLog(CRMExtractor.class);
/* (non-Javadoc)
* @see org.springframework.batch.core.step.tasklet.Tasklet#execute(org.springframework.batch.core.StepContribution, org.springframework.batch.core.scope.context.ChunkContext)
*/
@Overridepublic RepeatStatus execute(StepContribution arg0, ChunkContext arg1)
throws Exception {
// TODO Auto-generated method stub
log.info("************ CRM Extraction Batch Job is executing!!! *******");
//QUESTION: To Extract Entity from third party
// web service need object reference for
//factory and service from ExtractBatchjob class
List<Entity> orderEntities = getEntities("orderQueryImpl", factory, service);
OrderDao orderDao = (OrderDao) factory.getApplicationContext()
.getBean("orderDao");
orderDao.batchInsert(orderEntities);*/
return RepeatStatus.FINISHED;
}
public static List<Entity> getEntities(String queryImpl, SpringBusFactory factory,
IOrganizationService service)
throws IOrganizationServiceRetrieveMultipleOrganizationServiceFaultFaultFaultMessage,
IOException {
QueryBuilder queryBuilder = (QueryBuilderTemplate) factory
.getApplicationContext().getBean(queryImpl);
QueryExpression queryExpr = queryBuilder.getQuery();
EntityCollection result = service
.retrieveMultiple(queryExpr);
return result.getEntities().getEntities();
}
}
以下是上下文文件的片段
`<import resource="cxf.xml" />
<bean id="firstBatch" class="com.abc.model.TaskletImpl" />
<batch:step id="firstBatchStepOne">
<batch:tasklet ref="firstBatch" />
</batch:step>
<batch:job id="firstBatchJob">
<batch:step id="stepOne" parent="firstBatchStepOne" />
</batch:job>`
我的問題很簡單,如何將兩個變量/對象“服務”和“工廠”從ExtractBatchJob類傳遞給TaskletImpl類。
最干凈的解決方案是使用彈簧注入機制在電線service
和factory
進行。 您有兩種解決方案:
SpringBusFactory
創建為Spring bean,並將其連接到tasklet ContextBean
(作為單例),創建SpringBusFactory
並將其設置為ContextBean
屬性; 將此豆連接到您的tasklet 如果要使用在Spring上下文外部創建的對象(我指的是new
對象),必須將其注入Spring上下文。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.