SpringBatch连接mysql

1.添加依赖

一个是SpringBatch依赖

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-batch</artifactId>
        </dependency>

一个是mysql依赖

<dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

2.添加配置文件

# web visit  port
server:
  port: 8888
# mysql application
#url的格式：jdbc:驱动名://host:port/database?条件   useSSL是是否使用加密连接来访问
#schema:指的是模式  在这里指的是当你启动项目的时候 会根据指定的sql创建或更新模式 
#schema:模式，在关系型数据库中，用于描述数据库中对象的逻辑结构和规范的集合，定义了表、视图、索引、存储过程、触发器等数据库对象的组织方式和相关属性。
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/SpringBatch?useSSL=false&serverTimezone=Asia/Shanghai
    username: root
    password: root
    hikari:
      schema: classpath:/org/springframework/batch/core/schemal-mysql.sql
    driver-class-name: com.mysql.cj.jdbc.Driver
  batch:
    jdbc:
      initialize-schema: always

3.编写启动类

package com.pjk.springBatch.demo2;

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.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.annotation.Bean;

@EnableBatchProcessing
@SpringBootApplication
public class SpringBatchMysqlDemo {
    public static void main(String[] args) {
        SpringApplication.run(SpringBatchMysqlDemo.class, args);
    }
    @Autowired
    private JobBuilderFactory jobBuilderFactory;

    @Autowired
    private StepBuilderFactory stepBuilderFactory;

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

    @Bean
    public Step step() {
        return stepBuilderFactory.get("stepOne")
                .tasklet(tasklet())
                .build();
    }

    @Bean
    public Job job() {
        return jobBuilderFactory.get("job")
                .start(step())
                .build();
    }
}