springbatch自学之路-02（创建第一个helloworld的job）

冷不防 2023-02-11 10:13 25阅读 0赞

1.新建任务配置器 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;
    
    /**
     * 任务配置器
     *
     * @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 {
    
        //创建 创建job的对象
        @Autowired
        private JobBuilderFactory jobBuilderFactory;
    
        //创建 创建step的对象
        @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.新建启动器 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项目启动类
     *
     * @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.启动项目，发现helloworld被打印

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTIwNDUwNDU_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTIwNDUwNDU_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2020052221073868.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTIwNDUwNDU=,size_16,color_FFFFFF,t_70