I am using Spring Batch to write multiple reports. Requirement is i will get records with BranchId and name. I need to create one file for each branchId and write respective data into that file along with some header and footer. Example: In this case it should create total 3 files . I am using ClassifierCompo…
Tag: spring-batch
Spring Batch avoid launch Reader and Writer before tasklet
I’m working with spring batch and have a job with two steps the first step (tasklet) validation the header CSV and the second step reads an CSV file and Write to another CSV file like this: I used a FlatFileItemReader (in ClassitemReader) and a FlatFileItemWriter (in ClassiItemWriter), before reading CS…
Spring Batch Wildcard ItemWriter
I have one dummy question. To explain my use-case, I have different type of DAOs; say Users, Beers… etc. I wanted to use one generic ItemWriter for all of them. I created a CommonComponentConfiguration where I defined; The writer class goes like this; So far everything is okay. Where things gets complic…
Publishing Spring Batch metrics using Micrometer
I have an app that contains 2 dozen of spring batch cron jobs.There is no rest controller as it is an analytics app and it runs daily and read data from db, process it, and then store aggregated data in another db.I want to have spring inbuilt metrics on the jobs using micrometer and push them to Prometheus .…
Access execution context from StaxWriterCallback
I’m implementing a job that will load data from a database and write the result to xml files. The xml files will have a header that is based on some attributes that are stored in the execution context. Therefore, I want to acces the execution context. I’ve done this in other beans in this job, but…
how to configure FlatFileItemWriter to output the file to a ByteArrayRecource?
I have a situation in which the deployment server doesn’t allow the application to output files to its file system … so what i’m trying to do is to configure the FlatFileItemWriter to output the result file to a static Resource property (multi Threading is not an issue here ) . the current c…
How to get ID fields from table using spring batch
I´m trying to get all fields from a table using spring batch. I got all fields, except the ID fields (primary key e foreign key) Below is my reader: Below is my writer: The others fields comes with success, but the ID fields like transactionId and deposit comes null. I think there is some kind of protection t…
How can I specify dynamically the ItemProcessor for a JSON Job?
I have different JSON files and need to read, process and write the containing JSON objects of a JSON array. The output format (more specific: the output class) is for all files the same. Lets call it OutputClass. Hence the item processor is something like ItemProcessor<X, OutPutClass>. Where X is the c…
Using LocalDate in Spring context and avoid CGLib issue
I have a small job written with Spring Boot Batch 2.2.2. It takes a date as a parameter, and since several components need that date, I place it as a bean in the Spring context : It works well, no issue. Now I am doing some refactoring, and thought I should use LocalDate instead of Date, as it is now
How to use DefaultJobParametersValidator in Java-configured Spring Batch application?
How can I use DefaultJobParametersValidator in a Java-based Spring Batch Application? Should I call it manually in a Tasklet? I cannot find any examples that does not used an xml configuration. Answer A JobParametersValidator is used to validate job parameters before every job execution. You do not call it ma…