spring-batch

问题 Following the solution of my prev question at: cant import resources I managed finally to overcome the properties configuration after trying to integrate spring-batch-admin However now I get different error: .. java.lang.NoClassDefFoundError: org/springframework/integration/MessagingException at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2615) This is my gradle script: dependencies { compile('org.springframework.batch:spring

问题 I have a Job configuration like this, JOB ( Step 1: Read from DB (JDBC Item Reader + Writer) Keep the list of items in Job Execution Context Step 2 Take Items (list) from Step 1 (from Job Context) and execute this Step 2 in multiple parallel processes ) Here is the code looks like, <bean id="webServiceReader" class="org.springframework.batch.item.adapter.ItemReaderAdapter" scope="step"> <property name="targetObject" ref="individualXXXXService"/> <property name="targetMethod" value="execute"/>

问题 I am trying to create a spring batch application using annotation based approach with partitioner, which will be triggered by quartz scheduler, but getting following issues. When the job is triggered each partition is executed sequentially instead of parallelly i.e if I have 10 partitions instead of all 10 getting triggered/processed together it process one by one. When more than one instance of job(this is needed as per my requirement) gets triggered it's not getting synchronized properly i

问题 For a Spring batch job, we have 2 different queries on the same table. The requirement is to have a reader that execute two queries to read data from the same table. One way could be : <batch:step id="firstStep" next="secondStep"> <batch:tasklet> <batch:chunk reader="firstReader" writer="firstWriter" commit- interval="2"> </batch:chunk> </batch:tasklet> </batch:step> <batch:step id="secondStep" next="thirdStep"> <batch:tasklet> <batch:chunk reader="secondReader" writer="secondWriter" commit

问题 I'm trying to wrap my head around Spring Batch, and while many tutorials show great examples of code, i feel like i'm missing how the "spring batch engine" works. Scenario 1 - On user creation, create user at external service. Web request CreateLocalUser() launch job CreateExternalUser() CreateExternalUser() can fail because of many reasons, so we want to be able to retry and log errors, which Spring Batch can do for us. Also it's a decoupled process that has nothing to do with the creation

问题 I have been using Xml configuration for Spring Batch for a while, and feel it is simpler and concise. However, nowadays, people are suggesting to use javaconfig over xml. I googled this topic. This site tells us why javaconfig is better https://blog.codecentric.de/en/2013/06/spring-batch-2-2-javaconfig-part-1-a-comparison-to-xml/ Top reasons to choose javaconfig over xml : We want to do some basic configurations in the framework. People add a dependency to our framework library and import

问题 I am using Spring Batch in Spring Boot application. The Spring Boot version is 1.3.5.RELEASE . I am trying to use CompositeItemWriter so that the list of items will first be compressed/zipped by WriterOne and then be passed to WriterTwo where they will be written in the database. Here is my writer 1: @Component public class Writer1 implements org.springframework.batch.item.ItemWriter<SimpleObject> { @Override public void write(List<? extends SimpleObject> list) throws Exception { for

问题 I have a spring batch quartz set up. I have two jobs configured and running in parallel. The jobs are reading a file and then writing some data to the db. Here is the tricky part, the file names are calculated within the beforeJob() method of my execution listener. After each job finishes, the afterJob() would then calculate the next fileName. File names have the following pattern xxxxxx.nnnn where nn.. are numbers and sometimes the sequence can have numbers missing, therefore I am attempting

问题 I'm looking best way to measure execution time of Spring Batch read, procced and write action. In Meta-data there are information about whole step but not about each action. I'm thinking about listeners but is it proper solution ? Thank you for all of Yours answers! 回答1: The beforeXXX and afterXXX methods of ItemReadListener, ItemProcessListener and ItemWriteListener interfaces are the correct way to measure in-step performance. Just initialize your timer at beforeXXX() and output the result

问题 I have created jobParameter bean definition like below : <bean id="executionContext" class="com.test.ExecutionContextImpl" scope="step" > <property name="toDate" value="#{jobParameters['toDate']}" /> <property name="fromDate" value="#{jobParameters['fromDate']}" /> </bean> and I am using the bean while defining reader like: <bean id="fileDownloadReader" class="com.test.FileDownloadReader" scope="step" > <property name="execCtx" ref="executionContext" /> </bean> While invoking the job from