spring-batch

问题 I am working on Spring MVC+ Spring Batch example, I'm developing an application from link: https://github.com/krams915/spring-batch-tutorial and I was able to successfully deploy the application, but when I click via application I see following error comes. ## Heading ##I've uploaded my code at: https://github.com/test512/spring-batch-krams-tutorial/tree/master/spring-batch-krams-tutorial com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'spring_batch_tutorial.batch_job

问题 I read a CSV file as input using spring batch and i have 2 CSV file as output. The first file contains about 100 lines. the input file contains 5 colones id,typeProduct and price. And i have just 2 type of product i route through all these lines and i write two output files. For both files a single line containing the type of product and the sum of the prices of all these products which have the same type. So my need is before writing in the output files. i want to get all lines in a list to

问题 In some batch job, i call a method from a class, that's marked with: @Transactional(propagation = Propagation.REQUIRED, noRollbackFor = { Fault.class, AnotherFault.class }) public class ... And, when i call this method, and an exception throws i get exception: 00:29:25,765 ERROR [org.springframework.batch.core.step.AbstractStep] (executor-2) Encountered an error executing the step: org.springframework.transaction.TransactionSystemException: Could not commit JPA transaction; nested exception

问题 I already went through the below few links, but it did not solved my problem: Java Jackson: deserialize complex polymorphic object model: JsonMappingException: Unexpected token (START_OBJECT), expected VALUE_STRING Java Jackson - Unexpected token (START_ARRAY), expected VALUE_STRING In my project, we've 15 batch jobs. I am converting 15 batch jobs into 15 different micro-services. For that I have created one Spring Boot module, which has Entity classes, JPA repository layer and service layer.

问题 I have spring batch setup (remote partitioning), which reads items from files and process them. If input file do not exist, I want to copy them from remote server. So I have added a step listener in that I am trying to download files from remote server using spring integration sftp outbound gateway. public class PrepareExchangeListListener implements StepExecutionListener { private String localDir; private String remoteDir; private DirectChannel requestChannel; private PollableChannel

问题 I have a complex JSON below. I am reading it using FlatFileItemReader. How can I ignore the last line "]", with my customized ComplexJsonRecordSeparatorPolicy? [ {"firstName":"Tom", "lastName":"Cruise"}, {"firstName":"Bruce", "lastName":"Willis"}, {"firstName":"Liam", "lastName":"Neeson"} ] My ComplexJsonRecordSeparatorPolicy looks like below. This class is successfully working, when I have "]" in line no 4 but, it throws an error when the line is supplied with only "]" in line no 5, as my

问题 I am developing Spring Boot Batch Example . In this example, I have created BatchJPA core module which has Entities, JPARepository and DB configurations . This module adding into another Spring Module as dependency and in this module, I am adding code related specific batch jobs (like custom repository etc). I have total 15 batch jobs and I will be creating separate Spring Boot project with BatchJPA dependency. Now I am getting below error: 10-08-2018 20:13:10.122 [main] WARN org

问题 I'm working on an app that indexes a bunch of files in an embedded Derby(10.12.1.1) DB and then are exported as one single tabulated file. The first part is working fine since the DB is created and all records are indexed. However, when I attempt to read from the DB using JdbcPagingItemReader and write to a file I only get the number of records specified in pageSize . So if the pageSize is 10, then I get a file with 10 lines and the rest of the records seem to be ignored. So far, I haven't

问题 I have created 3 files writers that creates 3 local files. But all the information that is read goes into each file the same way. I am trying to set some logic so that only the items that are being called go into their proper file. For Example: fileA,FileB,FileC are created. When the reader hits the MONGODB it should parse through the buisness column and find the 3 different types, TypeA,TypeB, and TypeC. Once the reader has found the different types it should add it to the appropriate file,

问题 Have a requirement to read files in spring batch, process it and persist it as one feed. One feed contains 50% of the information. When i have to persist the final result from the feeds, i need combine them using a common field and persist it as if like one item. Please see example below. Feed1 fields: A|B|C|D|E Feed2 fields: A|I|J|K|L Final information that i need to persist is like: A|B|C|D|E|I|J|K|L Please suggest how i can achieve this in my spring batch job. Thanks. 回答1: If your input