spring-batch

问题 I have a requirement to execute 3 different query's and combine the results and send that for processing and finally write those results to flat file. I have referred to the link CompositeReader Example and implemented my composite reader in same way. My Composite Reader class. public class FI008CreationCompositeReader implements ItemStreamReader<List<T>>, ItemReadListener<List<T>> { /** Registered ItemStreamReaders. */ private List<AbstractCursorItemReader<?>> cursorItemReaders; @Value("#

问题 Can someone please give me a technical design overview of how I should implement this scenario : I am using spring batch to import data from CSV files to different tables and once they are imported I run some validations on these tables and now I need to write all those data from 3 different tables into three different Sheets of a single Excel file. Can someone please help me how I should use ItemReaders and Itemwriters to solve this problem ? 回答1: If I'm asked I would implement as follows.

问题 I'm currently using Spring Batch and want to use remote chunking. I use chunk oriented processing that use Item Reader, Item Processor and Item Writer and want to implement skip. I read in this question that told me to create SkippableTasklet but I kinda confuse how to implement protected abstract void run(JobParameters jobParameters) throws Exception; How can I implement skip in this remote chunking implementation? 回答1: There are couple of ways to handle skippable exception. I have written

问题 Background I currently have a spring-batch job that reads a flat file. The job uses a MultiResourcePartitioner to read physical partitions of a file that has been split into N number of smaller files. This means that each physical partition of the file will result in a new slave step being executed that reads the partition. The problem If there is any issue reading any physical partition, the execution of that slave step will fail and the exception will be logged by spring batch. This does

问题 This is my FlatFileItemReader configuration <beans:bean id="myFileItemReader" class="org.springframework.batch.item.file.FlatFileItemReader" p:resource="file://tmp/my-#{jobParameters[date]}/data.txt" p:lineMapper-ref="myLineMapper" scope="step"/> I am getting this error ERROR: org.springframework.batch.core.step.AbstractStep - Encountered an error executing the step org.springframework.batch.item.ItemStreamException: Failed to initialize the reader at org.springframework.batch.item.support

问题 I have a web application written using spring boot and Spring batch job which reads from CSV and writes data to RDS ( With MySQL engine ) table using spring jdbcTemplate. I have separated the spring batch specific job meta data tables to separate database so as to avoid confusion with my business logic tables. I need to bring connection pool capability for both the databases. I am using default connection pool provided by spring boot ( Tomcat jdbc pool ). I am configuring the multiple

问题 I have three different .properties files in a Spring Batch project, and I'm trying to set which .properties file should be used as a JobParameter. I'd like to be able to run the job like so: java CommandLineJobRunner context.xml jobName region=us The region should specify which .properties file should be used. The problem is getting the context to recognize the JobParameter. I've tried the following to no avail: <context:property-placeholder location="classpath:batch.#{jobParameters['region']

问题 Could someone please take a look at this code and help me find out what is causing the error: 'beanName must not be empty. I'm using Spring Tool Suite 3.3.0. I am trying to write a small spring-batch job that does not persist the job stats or anything. I just want to use spring framework. This is not the entire job, but I'm having trouble getting past this problem. This is my simple job with one step. Where is the empty bean?? My spring-batch code: <?xml version="1.0" encoding="UTF-8"?>

问题 One of the common tasks in Spring Batch it is used for is parsing CSV files, but CSV files come in all form and shapes… and some of them are syntactically incorrect.I am currently try to parse an invalid CSV file: My CSV file data.CSV: "1;13/4/1992;16/7/2006" "2;31/5/1993;1/8/2009" "3;21/4/1990;27/4/2010" I used this code here. This works for me but I want to use a CSV of my own! any suggestion please? 回答1: As I said in the comment of the answer your linked, you can use a FlatFileItemReader

问题 I am very new to Spring batch. I have a requirement to send mail from my application after processing some records. Went through many links. But i did not find anything useful. Can somebody help me? 回答1: Hi You can try below code, I am using this javax code in my project and working cool.. public void sendMailtoMgr(final String subject, final String message, String mgrmailIds) { String mngrecipients = null; Message msg = null; InternetAddress[] mgraddress = null; boolean debug = false; try {