Spring Boot集成Spring Batch快速入门Demo

import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;
import org.springframework.batch.core.StepContribution;
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.scope.context.ChunkContext;
import org.springframework.batch.core.step.tasklet.Tasklet;
import org.springframework.batch.repeat.RepeatStatus;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
 
@SpringBootApplication
@EnableBatchProcessing
public class SpringBatchQuickstartApplication {
 
    @Autowired
    private JobBuilderFactory jobs;
 
    @Autowired
    private StepBuilderFactory steps;
 
    @Autowired
    private JobLauncher jobLauncher;
 
    // 创建Tasklet作为步骤中的操作
    public Tasklet helloWorldTasklet() {
        return (StepContribution contribution, ChunkContext chunkContext) -> {
            System.out.println("Hello World!");
            return RepeatStatus.FINISHED;
        };
    }
 
    // 定义一个简单的步骤
    public Step helloWorldStep() {
        return steps.get("helloWorldStep")
                .tasklet(helloWorldTasklet())
                .build();
    }
 
    // 定义一个简单的作业，并将步骤包含进去
    public Job helloWorldJob() {
        return jobs.get("helloWorldJob")
                .start(helloWorldStep())
                .build();
    }
 
    // 应用启动时运行作业
    public void runJob(ApplicationContext context) throws Exception {
        Job job = context.getBean(Job.class);
        jobLauncher.run(job, new JobParameters());
    }
 
    public static void main(String[] args) {
        SpringApplication.run(SpringBatchQuickstartApplication.class, args);
    }
}

这段代码展示了如何在Spring Boot应用程序中创建一个简单的Spring Batch作业，并在启动时运行它。代码中定义了一个Tasklet，一个步骤，以及一个作业，并且展示了如何使用@EnableBatchProcessing注解来启用Spring Batch的自动配置。最后，在主方法中，我们调用SpringApplication.run()来启动Spri