Spring Batch in Spring MVC

by leelight · Published January 2, 2019 · Updated January 3, 2019

Today I have implemented Spring Batch in my Spring MVC project for importing data from CSV file to database. There are plenty of tutorials on the internet but I met a lot of problems during the implementation, which were not mentioned in those tutorials. I will list here all the problems.

1. Exceptions

1-1. Problem 1

You can not use your custom autowired service inside ItemProcessor.

1-1-1. Solution

Try to use your SpringContextUtils.getBean

public class SkuDataProcessor implements ItemProcessor<CustomSku, ProductSku>
{

   private static Logger logger = Logger.getLogger( SkuDataProcessor.class );

   @Override
   public ProductSku process( final CustomSku inSku ) throws Exception
   {
      SkuImportService skuImportService = (SkuImportService) SpringContextUtils.getBean( "skuImportService" );
      skuImportService.importSkuFromCSV( inSku );

public class SkuDataProcessor implements ItemProcessor<CustomSku, ProductSku>

{

private static Logger logger = Logger.getLogger( SkuDataProcessor.class );

@Override

public ProductSku process( final CustomSku inSku ) throws Exception

{

SkuImportService skuImportService = (SkuImportService) SpringContextUtils.getBean( "skuImportService" );

skuImportService.importSkuFromCSV( inSku );

@Service("skuImportService")
public class SkuImportServiceImpl implements SkuImportService
{

   private static Logger logger = Logger.getLogger( SkuImportServiceImpl.class );


   @Autowired
   private BrandService brandService;
......

@Service("skuImportService")

public class SkuImportServiceImpl implements SkuImportService

{

private static Logger logger = Logger.getLogger( SkuImportServiceImpl.class );

@Autowired

private BrandService brandService;

......

1-2. Problem 2

I have added all the data checking and importing in ItemProcessor, so I do not need to insert new record into the database(just do nothing here), so I tried to set a readable SQL in ItemWriter like this:

@Bean
   public ItemWriter<ProductSku> csvSkuWriter()
   {
      JdbcBatchItemWriter<ProductSku> writer = new JdbcBatchItemWriter<ProductSku>();
      writer.setItemSqlParameterSourceProvider( new BeanPropertyItemSqlParameterSourceProvider<ProductSku>() );
      writer.setSql( "select :id" );
      writer.setDataSource( dataSource );
      writer.afterPropertiesSet();
      return writer;
   }


@Bean
   public Step stepImport()
   {
      return stepBuilderFactory.get( "stepImport" )
         .<CustomSku, ProductSku>chunk( 50 )
         .reader( csvSkuReader() )
         .processor( skuDataProcessor() )
         .writer( csvSkuWriter() )
         .build();
   }

@Bean

public ItemWriter<ProductSku> csvSkuWriter()

{

JdbcBatchItemWriter<ProductSku> writer = new JdbcBatchItemWriter<ProductSku>();

writer.setItemSqlParameterSourceProvider( new BeanPropertyItemSqlParameterSourceProvider<ProductSku>() );

writer.setSql( "select :id" );

writer.setDataSource( dataSource );

writer.afterPropertiesSet();

return writer;

}

@Bean

public Step stepImport()

{

return stepBuilderFactory.get( "stepImport" )

.<CustomSku, ProductSku>chunk( 50 )

.reader( csvSkuReader() )

.processor( skuDataProcessor() )

.writer( csvSkuWriter() )

.build();

}

Exception:

org.springframework.dao.DataIntegrityViolationException: 
PreparedStatementCallback; SQL [select ?Can not issue executeUpdate() for SELECTs; 
nested exception is java.sql.BatchUpdateException: 
Can not issue executeUpdate() for SELECTs

org.springframework.dao.DataIntegrityViolationException:

PreparedStatementCallback; SQL [select ?Can not issue executeUpdate() for SELECTs;

nested exception is java.sql.BatchUpdateException:

Can not issue executeUpdate() for SELECTs

1-2-1. Solution:

Create a new class implement ItemWriter:

import java.util.List;

import net.mobabel.nova.model.shop.ProductSku;
import org.springframework.batch.item.ItemWriter;

public class NoOpItemWriter implements ItemWriter<ProductSku>
{

   public void write( List<? extends ProductSku> items ) throws Exception
   {
      //do nothing
   }
}

import java.util.List;

import net.mobabel.nova.model.shop.ProductSku;

import org.springframework.batch.item.ItemWriter;

public class NoOpItemWriter implements ItemWriter<ProductSku>

{

public void write( List<? extends ProductSku> items ) throws Exception

{

//do nothing

}

Then:

@Bean
   public NoOpItemWriter noOpWriter()
   {
      return new NoOpItemWriter();
   }


   @Bean
   public Step stepImport()
   {
      return stepBuilderFactory.get( "stepImport" )
         .<CustomSku, ProductSku>chunk( 50 )
         .reader( csvSkuReader() )
         .processor( skuDataProcessor() )
         .writer( noOpWriter() )
         .build();
   }

@Bean

public NoOpItemWriter noOpWriter()

{

return new NoOpItemWriter();

}

@Bean

public Step stepImport()

{

return stepBuilderFactory.get( "stepImport" )

.<CustomSku, ProductSku>chunk( 50 )

.reader( csvSkuReader() )

.processor( skuDataProcessor() )

.writer( noOpWriter() )

.build();

}

1-3. Problem 3

javax.validation.ValidationException: HV000183: 
Unable to initialize 'javax.el.ExpressionFactory'. 
Check that you have the EL dependencies on the classpath, or use ParameterMessageInterpolator instead

javax.validation.ValidationException: HV000183:

Unable to initialize 'javax.el.ExpressionFactory'.

Check that you have the EL dependencies on the classpath, or use ParameterMessageInterpolator instead

I have imported spring-batch-core in maven, but this is not enough, you need the following two libraries.

<dependency>
            <groupId>org.springframework.batch</groupId>
            <artifactId>spring-batch-core</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.el</groupId>
            <artifactId>javax.el-api</artifactId>
        </dependency>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.el</artifactId>
        </dependency>

<groupId>org.springframework.batch</groupId>

<artifactId>spring-batch-core</artifactId>

</dependency>

<groupId>javax.el</groupId>

<artifactId>javax.el-api</artifactId>

</dependency>

<groupId>org.glassfish.web</groupId>

<artifactId>javax.el</artifactId>

</dependency>

1-4. Problem 4

org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback; 
bad SQL grammar [SELECT JOB_INSTANCE_ID, JOB_NAME from BATCH_JOB_INSTANCE where JOB_NAME = ? and JOB_KEY = ?]; 
nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: 
Table 'nova_classic_local_core.batch_job_instance' doesn't exist

org.springframework.jdbc.BadSqlGrammarException: PreparedStatementCallback;

bad SQL grammar [SELECT JOB_INSTANCE_ID, JOB_NAME from BATCH_JOB_INSTANCE where JOB_NAME = ? and JOB_KEY = ?];

nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

Table 'nova_classic_local_core.batch_job_instance' doesn't exist

1-4-1. Reason:

Spring Batch requires some tables in your database for job execution. But in Spring MVC those tables can not be generated automatically. In Spring Boot yes, if you enable spring.batch.initialize-schema=ALWAYS in your application.properties.

The meta table’s scripts are stored in the spring-batch-core.jar, you need to create it manually.

I have tried this solution from https://www.mkyong.com/spring-batch/spring-batch-metadata-tables-are-not-created-automatically/ to create tables automatically but does not work.

This is my spring-batch.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans
						http://www.springframework.org/schema/beans/spring-beans.xsd">


    <bean id="jobRepository" class="org.springframework.batch.core.repository.support.JobRepositoryFactoryBean" depends-on="dataSource">
        <property name="dataSource" ref="dataSource" />
        <property name="transactionManager" ref="transactionManager" />
        <property name="databaseType" value="mysql" />
    </bean>

    <bean id="jobLauncher" class="org.springframework.batch.core.launch.support.SimpleJobLauncher">
        <property name="jobRepository" ref="jobRepository" />
    </bean>

    <jdbc:initialize-database data-source="dataSource">
        <jdbc:script location="org/springframework/batch/core/schema-drop-mysql.sql" />
        <jdbc:script location="org/springframework/batch/core/schema-mysql.sql" />
    </jdbc:initialize-database>

</beans>

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans" xmlns:jdbc="http://www.springframework.org/schema/jdbc"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd">

</bean>

</bean>

<jdbc:initialize-database data-source="dataSource">

<jdbc:script location="org/springframework/batch/core/schema-drop-mysql.sql" />

<jdbc:script location="org/springframework/batch/core/schema-mysql.sql" />

</jdbc:initialize-database>

</beans>

Finally, I create the tables manually. Of course, you can implement this via flyway

1-5. Problem 5

When the job was executed successfully without any exceptions, and you run it again.

1-5-1. Reason:

You will get the “All steps already completed or no steps configured for this job.” message in table batch_job_execution and job quit with exit code NOOP, it might be that you are running the same job with exactly the same parameters.

Please add a timestamp in jobParameters to avoid this problem.

JobParameters jobParameters = new JobParametersBuilder()
         .addLong( "timestamp", System.currentTimeMillis() )
         .toJobParameters();
      JobExecution result = null;
      try
      {
         result = jobLauncher.run( skuToDatabaseJob, jobParameters );
      }
......

JobParameters jobParameters = new JobParametersBuilder()

.addLong( "timestamp", System.currentTimeMillis() )

.toJobParameters();

JobExecution result = null;

try

{

result = jobLauncher.run( skuToDatabaseJob, jobParameters );

}

......

ExitStatus es = result.getExitStatus();
if (es.getExitCode().equals( ExitStatus.COMPLETED.getExitCode() )){......}

1 2	ExitStatus es = result.getExitStatus(); if (es.getExitCode().equals( ExitStatus.COMPLETED.getExitCode() )){......}

Ref: https://stackoverflow.com/questions/19573646/how-to-make-my-spring-batch-step-executions-end-with-statuses-other-than-complet

2. Code:

/*
 * Copyright (c) 2016-2017 Mobabel.net
 *
 * All rights reserved.
 */

package net.mobabel.nova.service.shop.custom.batch;

import com.alibaba.druid.pool.DruidDataSource;
import net.mobabel.nova.core.util.Logger;
import net.mobabel.nova.model.shop.ProductSku;
import org.springframework.batch.core.ExitStatus;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.JobParametersInvalidException;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.batch.core.launch.support.RunIdIncrementer;
import org.springframework.batch.core.launch.support.SimpleJobLauncher;
import org.springframework.batch.core.repository.JobExecutionAlreadyRunningException;
import org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.JobRestartException;
import org.springframework.batch.core.repository.support.JobRepositoryFactoryBean;
import org.springframework.batch.item.ItemProcessor;
import org.springframework.batch.item.ItemWriter;
import org.springframework.batch.item.database.BeanPropertyItemSqlParameterSourceProvider;
import org.springframework.batch.item.database.JdbcBatchItemWriter;
import org.springframework.batch.item.file.FlatFileItemReader;
import org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper;
import org.springframework.batch.item.file.mapping.DefaultLineMapper;
import org.springframework.batch.item.file.transform.DelimitedLineTokenizer;
import org.springframework.batch.support.DatabaseType;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.core.io.FileSystemResource;
import org.springframework.stereotype.Component;
import org.springframework.transaction.PlatformTransactionManager;

@Component
@EnableBatchProcessing
public class SpringBatchProcessingImpl implements SpringBatchProcessing
{

   private static Logger logger = Logger.getLogger( SpringBatchProcessingImpl.class );

   @Value( "${ecommerce.config.csv_file}" )
   private String fetchFile;

   @Autowired
   public JobBuilderFactory jobBuilderFactory;

   @Autowired
   public StepBuilderFactory stepBuilderFactory;

   @Autowired
   public DruidDataSource dataSource;

   @Autowired
   private JobLauncher jobLauncher;

   @Autowired
   private Job skuToDatabaseJob;

   @Bean
   public JobRepository jobRepository( DruidDataSource dataSource, PlatformTransactionManager transactionManager ) throws Exception
   {

      JobRepositoryFactoryBean jobRepositoryFactoryBean = new JobRepositoryFactoryBean();
      jobRepositoryFactoryBean.setDataSource( dataSource );
      jobRepositoryFactoryBean.setTransactionManager( transactionManager );
      jobRepositoryFactoryBean.setDatabaseType( String.valueOf( DatabaseType.MYSQL ) );
      jobRepositoryFactoryBean.setIsolationLevelForCreate( "ISOLATION_SERIALIZABLE" );
      //for oracle
      //jobRepositoryFactoryBean.setIsolationLevelForCreate("ISOLATION_READ_COMMITTED");
      jobRepositoryFactoryBean.afterPropertiesSet();
      return jobRepositoryFactoryBean.getObject();
   }

   @Bean
   public SimpleJobLauncher jobLauncher( DruidDataSource dataSource, PlatformTransactionManager transactionManager ) throws Exception
   {
      SimpleJobLauncher jobLauncher = new SimpleJobLauncher();
      jobLauncher.setJobRepository( jobRepository( dataSource, transactionManager ) );
      return jobLauncher;
   }

   @Bean
   public FlatFileItemReader<CustomSku> csvSkuReader()
   {
      FlatFileItemReader<CustomSku> reader = new FlatFileItemReader<CustomSku>();
      reader.setResource( new FileSystemResource( fetchFile ) );
      reader.setLinesToSkip( 1 );
      reader.setLineMapper( new DefaultLineMapper<CustomSku>()
      {{
         setLineTokenizer( new DelimitedLineTokenizer()
         {{
            setNames( new String[] { "refFromStore", "size", "color", "stock", "BrandName", "styleCode", "officePrice", "name", "skuFromStore", "weight" } );
            setDelimiter( ";" );
         }} );
         setFieldSetMapper( new BeanWrapperFieldSetMapper<CustomSku>()
         {{
            setTargetType( CustomSku.class );
         }} );
      }} );
      return reader;
   }

   @Bean
   ItemProcessor<CustomSku, ProductSku> skuDataProcessor()
   {
      SkuDataProcessor skuDataProcessor = new SkuDataProcessor();
      return skuDataProcessor;
   }

   @Bean
   public ItemWriter<ProductSku> csvSkuWriter()
   {
      JdbcBatchItemWriter<ProductSku> writer = new JdbcBatchItemWriter<ProductSku>();
      writer.setItemSqlParameterSourceProvider( new BeanPropertyItemSqlParameterSourceProvider<ProductSku>() );
      writer.setSql( "INSERT INTO sh_product_sku (id) VALUES (:id)" );
      writer.setDataSource( dataSource );
      writer.afterPropertiesSet();
      return writer;
   }

   @Bean
   public NoOpItemWriter noOpWriter()
   {
      return new NoOpItemWriter();
   }

   // end reader, writer, and processor

   // begin job info
   @Bean
   public Step stepImport()
   {
      return stepBuilderFactory.get( "stepImport" )
         //Must be 1, otherwise every new  item will repeat adding duplicated item, because in the check list,
         //the duplication checking will be executed in every chunksize frequency
         .<CustomSku, ProductSku>chunk( 1 )
         .reader( csvSkuReader() )
         .processor( skuDataProcessor() )
         .writer( noOpWriter() )
         .build();
   }

   @Bean
   Job skuToDatabaseJob( SkuJobListener listener )
   {
      return jobBuilderFactory.get( "skuToDatabaseJob" )
         .incrementer( new RunIdIncrementer() )
         .listener( listener )
         .flow( stepImport() )
         .end()
         .build();
   }
   // end job info

   @Override
   public void run() throws Exception
   {
      JobParameters jobParameters = new JobParametersBuilder()
         .addLong( "timestamp", System.currentTimeMillis() )
         .toJobParameters();
      JobExecution result = null;
      try
      {
         result = jobLauncher.run( skuToDatabaseJob, jobParameters );
      }
      catch (JobExecutionAlreadyRunningException e)
      {
         logger.error( "", e );
      }
      catch (JobRestartException e)
      {
         logger.error( "", e );
      }
      catch (JobInstanceAlreadyCompleteException e)
      {
         logger.error( "", e );
      }
      catch (JobParametersInvalidException e)
      {
         logger.error( "", e );
      }
      ExitStatus es = result.getExitStatus();
      if (es.getExitCode().equals( ExitStatus.COMPLETED.getExitCode() ))
      {
         logger.info( "sku database refresh job finished" );
      }
      else if (es.getExitCode().equals( ExitStatus.NOOP.getExitCode() ))
      {
         logger.warn( "sku database refresh job noop" );
      }
      else
      {
         logger.error( "sku database refresh job failed" );
      }

   }

}

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package net.mobabel.nova.service.shop.custom.batch;

import com.alibaba.druid.pool.DruidDataSource;

import net.mobabel.nova.core.util.Logger;

import net.mobabel.nova.model.shop.ProductSku;

import org.springframework.batch.core.ExitStatus;

import org.springframework.batch.core.Job;

import org.springframework.batch.core.JobExecution;

import org.springframework.batch.core.JobParameters;

import org.springframework.batch.core.JobParametersBuilder;

import org.springframework.batch.core.JobParametersInvalidException;

import org.springframework.batch.core.Step;

import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;

import org.springframework.batch.core.configuration.annotation.JobBuilderFactory;

import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;

import org.springframework.batch.core.launch.JobLauncher;

import org.springframework.batch.core.launch.support.RunIdIncrementer;

import org.springframework.batch.core.launch.support.SimpleJobLauncher;

import org.springframework.batch.core.repository.JobExecutionAlreadyRunningException;

import org.springframework.batch.core.repository.JobInstanceAlreadyCompleteException;

import org.springframework.batch.core.repository.JobRepository;

import org.springframework.batch.core.repository.JobRestartException;

import org.springframework.batch.core.repository.support.JobRepositoryFactoryBean;

import org.springframework.batch.item.ItemProcessor;

import org.springframework.batch.item.ItemWriter;

import org.springframework.batch.item.database.BeanPropertyItemSqlParameterSourceProvider;

import org.springframework.batch.item.database.JdbcBatchItemWriter;

import org.springframework.batch.item.file.FlatFileItemReader;

import org.springframework.batch.item.file.mapping.BeanWrapperFieldSetMapper;

import org.springframework.batch.item.file.mapping.DefaultLineMapper;

import org.springframework.batch.item.file.transform.DelimitedLineTokenizer;

import org.springframework.batch.support.DatabaseType;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.context.annotation.Bean;

import org.springframework.core.io.FileSystemResource;

import org.springframework.stereotype.Component;

import org.springframework.transaction.PlatformTransactionManager;

@Component

@EnableBatchProcessing

public class SpringBatchProcessingImpl implements SpringBatchProcessing

{

private static Logger logger = Logger.getLogger( SpringBatchProcessingImpl.class );

@Value( "${ecommerce.config.csv_file}" )

private String fetchFile;

@Autowired

public JobBuilderFactory jobBuilderFactory;

@Autowired

public StepBuilderFactory stepBuilderFactory;

@Autowired

public DruidDataSource dataSource;

@Autowired

private JobLauncher jobLauncher;

@Autowired

private Job skuToDatabaseJob;

@Bean

public JobRepository jobRepository( DruidDataSource dataSource, PlatformTransactionManager transactionManager ) throws Exception

{

JobRepositoryFactoryBean jobRepositoryFactoryBean = new JobRepositoryFactoryBean();

jobRepositoryFactoryBean.setDataSource( dataSource );

jobRepositoryFactoryBean.setTransactionManager( transactionManager );

jobRepositoryFactoryBean.setDatabaseType( String.valueOf( DatabaseType.MYSQL ) );

jobRepositoryFactoryBean.setIsolationLevelForCreate( "ISOLATION_SERIALIZABLE" );

//for oracle

//jobRepositoryFactoryBean.setIsolationLevelForCreate("ISOLATION_READ_COMMITTED");

jobRepositoryFactoryBean.afterPropertiesSet();

return jobRepositoryFactoryBean.getObject();

}

@Bean

public SimpleJobLauncher jobLauncher( DruidDataSource dataSource, PlatformTransactionManager transactionManager ) throws Exception

{

SimpleJobLauncher jobLauncher = new SimpleJobLauncher();

jobLauncher.setJobRepository( jobRepository( dataSource, transactionManager ) );

return jobLauncher;

}

@Bean

public FlatFileItemReader<CustomSku> csvSkuReader()

{

FlatFileItemReader<CustomSku> reader = new FlatFileItemReader<CustomSku>();

reader.setResource( new FileSystemResource( fetchFile ) );

reader.setLinesToSkip( 1 );

reader.setLineMapper( new DefaultLineMapper<CustomSku>()

{{

setLineTokenizer( new DelimitedLineTokenizer()

{{

setNames( new String[] { "refFromStore", "size", "color", "stock", "BrandName", "styleCode", "officePrice", "name", "skuFromStore", "weight" } );

setDelimiter( ";" );

}} );

setFieldSetMapper( new BeanWrapperFieldSetMapper<CustomSku>()

{{

setTargetType( CustomSku.class );

}} );

return reader;

}

@Bean

ItemProcessor<CustomSku, ProductSku> skuDataProcessor()

{

SkuDataProcessor skuDataProcessor = new SkuDataProcessor();

return skuDataProcessor;

}

@Bean

public ItemWriter<ProductSku> csvSkuWriter()

{

JdbcBatchItemWriter<ProductSku> writer = new JdbcBatchItemWriter<ProductSku>();

writer.setItemSqlParameterSourceProvider( new BeanPropertyItemSqlParameterSourceProvider<ProductSku>() );

writer.setSql( "INSERT INTO sh_product_sku (id) VALUES (:id)" );

writer.setDataSource( dataSource );

writer.afterPropertiesSet();

return writer;

}

@Bean

public NoOpItemWriter noOpWriter()

{

return new NoOpItemWriter();

}

// end reader, writer, and processor

// begin job info

@Bean

public Step stepImport()

{

return stepBuilderFactory.get( "stepImport" )

//Must be 1, otherwise every new item will repeat adding duplicated item, because in the check list,

//the duplication checking will be executed in every chunksize frequency

.<CustomSku, ProductSku>chunk( 1 )

.reader( csvSkuReader() )

.processor( skuDataProcessor() )

.writer( noOpWriter() )

.build();

}

@Bean

Job skuToDatabaseJob( SkuJobListener listener )

{

return jobBuilderFactory.get( "skuToDatabaseJob" )

.incrementer( new RunIdIncrementer() )

.listener( listener )

.flow( stepImport() )

.end()

.build();

}

// end job info

@Override

public void run() throws Exception

{

JobParameters jobParameters = new JobParametersBuilder()

.addLong( "timestamp", System.currentTimeMillis() )

.toJobParameters();

JobExecution result = null;

try

{

result = jobLauncher.run( skuToDatabaseJob, jobParameters );

}

catch (JobExecutionAlreadyRunningException e)

{

logger.error( "", e );

}

catch (JobRestartException e)

{

logger.error( "", e );

}

catch (JobInstanceAlreadyCompleteException e)

{

logger.error( "", e );

}

catch (JobParametersInvalidException e)

{

logger.error( "", e );

}

ExitStatus es = result.getExitStatus();

if (es.getExitCode().equals( ExitStatus.COMPLETED.getExitCode() ))

{

logger.info( "sku database refresh job finished" );

}

else if (es.getExitCode().equals( ExitStatus.NOOP.getExitCode() ))

{

logger.warn( "sku database refresh job noop" );

}

else

{

logger.error( "sku database refresh job failed" );

}

/*
 * Copyright (c) 2016-2018 Mobabel.net
 *
 * All rights reserved.
 */
package net.mobabel.nova.service.shop.custom.batch;

import net.mobabel.nova.core.util.Logger;
import net.mobabel.nova.model.shop.ProductSku;
import net.mobabel.nova.service.shop.custom.SkuImportService;
import net.mobabel.nova.service.utils.SpringContextUtils;
import org.springframework.batch.item.ItemProcessor;

public class SkuDataProcessor implements ItemProcessor<CustomSku, ProductSku>
{

   private static Logger logger = Logger.getLogger( SkuDataProcessor.class );

   @Override
   public ProductSku process( final CustomSku inSku ) throws Exception
   {
      //This is your custom service to check and import records into database
      SkuImportService skuImportService = (SkuImportService) SpringContextUtils.getBean( "skuImportService" );
      skuImportService.importSkuFromCSV( inSku );

      //do nothing here
      final ProductSku outSku = new ProductSku();
      outSku.setName( inSku.getName() );

      logger.info( "Sku converting (" + inSku + ") into (" + outSku + ")" );

      return outSku;
   }

}

package net.mobabel.nova.service.shop.custom.batch;

import net.mobabel.nova.core.util.Logger;

import net.mobabel.nova.model.shop.ProductSku;

import net.mobabel.nova.service.shop.custom.SkuImportService;

import net.mobabel.nova.service.utils.SpringContextUtils;

import org.springframework.batch.item.ItemProcessor;

public class SkuDataProcessor implements ItemProcessor<CustomSku, ProductSku>

{

private static Logger logger = Logger.getLogger( SkuDataProcessor.class );

@Override

public ProductSku process( final CustomSku inSku ) throws Exception

{

//This is your custom service to check and import records into database

SkuImportService skuImportService = (SkuImportService) SpringContextUtils.getBean( "skuImportService" );

skuImportService.importSkuFromCSV( inSku );

//do nothing here

final ProductSku outSku = new ProductSku();

outSku.setName( inSku.getName() );

logger.info( "Sku converting (" + inSku + ") into (" + outSku + ")" );

return outSku;

}

Ref: NOST-95

Tags: Spring Batch

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Spring Batch in Spring MVC

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Spring Batch in Spring MVC

1. Exceptions

1-1. Problem 1

1-1-1. Solution

1-2. Problem 2

1-2-1. Solution:

1-3. Problem 3

1-4. Problem 4

1-4-1. Reason:

1-5. Problem 5

1-5-1. Reason:

2. Code:

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