springbatch自學之路-02（創建第一個helloworld的job）

1.新建任務配置器 JobConfig.java

package com.springbatch._01helloworld;

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.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 helloWorldJob() {

        return jobBuilderFactory.get("helloWorldJob")
                .start(helloWorldStep())
                .build();

    }

    @Bean
    public Step helloWorldStep() {

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

    }

}

2.新建啓動器 SpringBatchConfig.java

package com.springbatch._01helloworld;

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.啓動項目，發現helloworld被打印