spring-batch

问题 After reading this answer (by Michael Minella) Spring batch chunk processing , how does the reader work ?if the result set changes? I assume with JdbcPagingItemReader, the query is run again for each page. In this case, when reading a new page it is possible a new record had been inserted in a position before this page starts, causing the last record of previous page to be processed again. This means in order to prevent a record to be reprocessed I must always set a "processed already" flag

问题 I am using Spring Batch in my project with oracle and created 2-3 jobs, which is working fine and inserting into jobs meta data tables. Now I would like to track jobs running information. I read about Spring Batch Admin JSON API. Do not want to use HTML UI. How we can use JSON API to get data from batch tables. 来源： https://stackoverflow.com/questions/36354695/how-to-configure-spring-batch-admin-to-use-its-json-api

问题 I have a requirement to split my input file which contains records of different length and type some beans. I am able to map each record to different bean using CompositeItemReader. But there is some parent-child relation exists between these records. I want to form a bean which contains child beans. Any help is appreciated. This is my sample input file. AB,01,05,HHGFG,05 CD,452,63,FDD,07,54,76,EQWED PT,GGG,76,YYY CD,08,06,ASW,97,55,66,BT AB,96,87,KKK,03 PT,TIPWQ,19,YEQ PT,ROPRG,39,PRVM CD,08

问题 Situation: I read url of file on internet from db. In itemProcessor I download this file and I want to save each row to database. Then processing continue and I want to create some new class "summary" which I want to save to db too. How should configure my job in spring batch ? 回答1: For your use-case job can be defined using this step sequence (in this way this job is also restartable): Download file from URL to HDD using a Tasklet: a Tasklet is the strategy to process a single step; in your

问题 I have created a Spring boot batch maven project using Spring Initializr. When i imported the downloaded zip as maven project on my STS, i faced the following problem, Failure to transfer org.springframework.batch:spring-batch-infrastructure:jar:3.0.7.RELEASE from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org

问题 Does anyone know if there is a way to start over in Spring batch? I want it to first start at Step1, then Step2, Step3, then back to Step1, Step2, Step3, and so forth until a condition is met. I tried googling, but failed to fin any concrete examples. Code so far: @Bean Job job(JobBuilderFactory factory) { return factory.get(JOB_NAME) .start(stagingStep) .next(analyzeStep) .next(reportingStep) .preventRestart() .build(); } 回答1: I think this can be done in multiple ways.. 1.Intercept the job

问题 I have SP with only 4 output params and no input params, and my StoredProcedureItemReader conf look like this <bean id="spItemReader"> class="org.springframework.batch.item.database.StoredProcedureItemReader" > <property name="dataSource" ref="dataSource"/> <property name="procedureName" value="mynamespace.spname"/> <property name="refCursorPosition" value="1"></property> <property name="rowMapper"> <bean class="MyRowMapper"/> </property> <property name="parameters"> <list> <bean class="org

问题 I am trying to setup a DMLC so that it picks up a certain amount of messages from a JMS broker (ActiveMQ) within the same transaction and should any error occur, the transaction is rolled back so that all message contained within that transaction end up in DLQ, or better yet, do not leave the broker. I found an implementation for a BatchMessageListenerContainer using spring-batch under the spring-batch-infrastucture-tests repo (https://github.com/spring-projects/spring-batch/tree/master

问题 I've got a Job description: <job id="importJob" job-repository="jobRepository"> <step id="importStep1" next="importStep2" parent="abstractImportStep"> <tasklet ref="importJobBean" /> </step> <step id="importStep2" next="importStep3" parent="abstractImportStep"> <tasklet ref="importJobBean" /> </step> <step id="importStep3" next="importStep4" parent="abstractImportStep"> <tasklet ref="importJobBean" /> </step> <step id="importStep4" next="importStepFinish" parent="abstractImportStep"> <tasklet

问题 It seems like the Spring Batch 3.0.6 release points to the 2.2 schema by default. In the spring.schemas file there is this definition http\://www.springframework.org/schema/batch/spring-batch.xsd=/org/springframework/batch/core/configuration/xml/spring-batch-2.2.xsd And when I add this namespace to my spring file, I then get the scope="step" option (in my IDE, although IntelliJ has been pretty reliable matching runtime issues) ... xmlns:batch="http://www.springframework.org/schema/batch" ...