springbatch自學之路-05（flow的創建與使用）

1.配置類

package com.springbatch._03new_flow;

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.JobBuilderFactory;
import org.springframework.batch.core.configuration.annotation.StepBuilderFactory;
import org.springframework.batch.core.job.builder.FlowBuilder;
import org.springframework.batch.core.job.flow.Flow;
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.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * 任務配置器
 *
 * @Package: com.springbatch._01helloworld
 * @ClassName: jobConfig
 * @author: zq
 * @since: 2020/5/22 21:00
 * @version: 1.0
 * @Copyright: 2020 zq. All rights reserved.
 */
@Configuration
public class JobConfig {

    //創建 創建job的對象
    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    //創建 創建step的對象
    @Autowired
    private StepBuilderFactory stepBuilderFactory;

    @Bean
    public Job newJob() {

        return jobBuilderFactory.get("newJob")
                .start(flow1())
                .next(step4()).end()
                .build();

    }

    @Bean
    public Step step3() {
        return stepBuilderFactory.get("step03")
                .tasklet(new Tasklet() {
                    @Override
                    public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                        System.out.println("step03");
                        return RepeatStatus.FINISHED;
                    }
                }).build();
    }

    @Bean
    public Step step4() {
        return stepBuilderFactory.get("step04")
                .tasklet(new Tasklet() {
                    @Override
                    public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                        System.out.println("step04");
                        return RepeatStatus.FINISHED;
                    }
                }).build();
    }

    @Bean
    public Step step2() {
        return stepBuilderFactory.get("step02")
                .tasklet(new Tasklet() {
                    @Override
                    public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                        System.out.println("step02");
                        return RepeatStatus.FINISHED;
                    }
                }).build();
    }

    @Bean
    public Step step1() {

        return stepBuilderFactory.get("step01")
                .tasklet(new Tasklet() {
                    @Override
                    public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                        System.out.println("step01");
                        return RepeatStatus.FINISHED;
                    }
                }).build();

    }

    @Bean
    public Flow flow1() {

        return new FlowBuilder<Flow>("flow01")
                .start(step1())
                .next(step2())
                .next(step3())
                .build();

    }

}

2.啓動類

package com.springbatch._03new_flow;

import org.springframework.batch.core.configuration.annotation.EnableBatchProcessing;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * SpringBatchDemo項目啓動類
 *
 * @Package: PACKAGE_NAME
 * @ClassName: com.springbatch._01helloworld.SpringBatchConfig
 * @author: zq
 * @since: 2020/5/22 20:31
 * @version: 1.0
 * @Copyright: 2020 zq. All rights reserved.
 */
@SpringBootApplication
@EnableBatchProcessing
public class SpringBatchConfig {

    public static void main(String[] args) {

        SpringApplication.run(SpringBatchConfig.class, args);

    }

}

3.執行結果