Spring Batch - Could not @Autowired SimpleJobLauncher

问题

I face the below issue though I have correctly defined SimpleJobLauncher

Description:

Field jobLauncher in com.abcplusd.application.BatchConfig required a bean of type 'org.springframework.batch.core.launch.support.SimpleJobLauncher' that could not be found.

Action:

Consider defining a bean of type 'org.springframework.batch.core.launch.support.SimpleJobLauncher' in your configuration.

The following are my source code..

package com.abcplusd.application;

import org.springframework.batch.core.launch.support.SimpleJobLauncher;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean;
import org.springframework.batch.support.transaction.ResourcelessTransactionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;

@Configuration
@EnableScheduling
public class BatchScheduler {
    @Bean
    public ResourcelessTransactionManager transactionManager() {
        return new ResourcelessTransactionManager();
    }

    @Bean
    public MapJobRepositoryFactoryBean mapJobRepositoryFactoryBean(ResourcelessTransactionManager resourcelessTransactionManager) throws Exception {
        MapJobRepositoryFactoryBean factoryBean = new MapJobRepositoryFactoryBean(resourcelessTransactionManager);
        factoryBean.afterPropertiesSet();
        return factoryBean;
    }

    @Bean
    public JobRepository jobRepository(MapJobRepositoryFactoryBean factoryBean) throws Exception{
        return (JobRepository) factoryBean.getObject();
    }

    @Bean
    public SimpleJobLauncher jobLauncher(JobRepository jobRepository) {
        SimpleJobLauncher launcher = new SimpleJobLauncher();
        launcher.setJobRepository(jobRepository);
        return launcher;
    }

}

and

package com.abcplusd.application;

import com.abcplusd.application.batch.Process;
import com.abcplusd.application.batch.Reader;
import com.abcplusd.application.batch.Writer;
import org.springframework.batch.core.*;
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.support.RunIdIncrementer;
import org.springframework.batch.core.launch.support.SimpleJobLauncher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.scheduling.annotation.Scheduled;

import java.util.Date;

@Configuration
@EnableBatchProcessing
@Import({BatchScheduler.class})
public class BatchConfig {
    @Autowired
    public JobBuilderFactory jobBuilderFactory;

    @Autowired
    public StepBuilderFactory stepBuilderFactory;

    @Autowired
    public SimpleJobLauncher jobLauncher;

    @Scheduled(cron = "0 0/1 * 1/1 * ?")
    public void sendSMSForBookMark() throws Exception {
        System.out.println(" Job Started at :"+ new Date());
        JobParameters param = new JobParametersBuilder().addString("JobID",
            String.valueOf(System.currentTimeMillis())).toJobParameters();
        JobExecution execution = jobLauncher.run(job(), param);
        System.out.println("Job finished with status :" + execution.getStatus());
    }
    public Job job() {
        return jobBuilderFactory.get("job")
            .incrementer(new RunIdIncrementer())
            .flow(step1())
            .end()
            .build();
    }

    public Step step1() {
        return stepBuilderFactory.get("step1")
            .<String, String> chunk(1)
            .reader(new Reader())
            .processor(new Process())
            .writer(new Writer())
            .build();
    }
}

Help me to solve this issue.

回答1:

It works fine when removed @Configuration from BatchScheduler class.

So answer is

package com.abcplusd.application;

import org.springframework.batch.core.launch.support.SimpleJobLauncher;
import org.springframework.batch.core.repository.JobRepository;
import org.springframework.batch.core.repository.support.MapJobRepositoryFactoryBean;
import org.springframework.batch.support.transaction.ResourcelessTransactionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.scheduling.annotation.EnableScheduling;

@EnableScheduling
public class BatchScheduler {
    @Bean
    public ResourcelessTransactionManager transactionManager() {
        return new ResourcelessTransactionManager();
    }

    @Bean
    public MapJobRepositoryFactoryBean mapJobRepositoryFactoryBean(ResourcelessTransactionManager resourcelessTransactionManager) throws Exception {
        MapJobRepositoryFactoryBean factoryBean = new MapJobRepositoryFactoryBean(resourcelessTransactionManager);
        factoryBean.afterPropertiesSet();
        return factoryBean;
    }

    @Bean
    public JobRepository jobRepository(MapJobRepositoryFactoryBean factoryBean) throws Exception{
        return (JobRepository) factoryBean.getObject();
    }

    @Bean
    public SimpleJobLauncher jobLauncher(JobRepository jobRepository) {
        SimpleJobLauncher launcher = new SimpleJobLauncher();
        launcher.setJobRepository(jobRepository);
        return launcher;
    }

}

来源：https://stackoverflow.com/questions/51436301/spring-batch-could-not-autowired-simplejoblauncher