Spring Batch Hello World

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Project Directory

Maven Dependency

 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>2.2.1.RELEASE</version>
         <relativePath/>
     </parent>

     <groupId>org.fool.springbatch</groupId>
     <artifactId>hello-springbatch</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <name>hello-springbatch</name>

     <properties>
         <java.version>1.8</java.version>
     </properties>

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

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

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

         <dependency>
             <groupId>org.projectlombok</groupId>
             <artifactId>lombok</artifactId>
         </dependency>

         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
             <exclusions>
                 <exclusion>
                     <groupId>org.junit.vintage</groupId>
                     <artifactId>junit-vintage-engine</artifactId>
                 </exclusion>
             </exclusions>
         </dependency>
         <dependency>
             <groupId>org.springframework.batch</groupId>
             <artifactId>spring-batch-test</artifactId>
             <scope>test</scope>
         </dependency>
     </dependencies>

     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
         </plugins>
     </build>

 </project>

application.properties

 spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
 spring.datasource.url=jdbc:mysql://localhost:3306/springbatch?useUnicode=true&characterEncoding=utf8&useSSL=false
 spring.datasource.username=root
 spring.datasource.password=123456
 spring.datasource.schema=classpath:/org/springframework/batch/core/schema-mysql.sql
 spring.batch.initialize-schema=always

Source Code

Application.java

 package org.fool.springbatch;

 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;

 @SpringBootApplication
 public class Application {

     public static void main(String[] args) {
         SpringApplication.run(Application.class, args);
     }

 }

JobConfiguration.java

 package org.fool.springbatch.config;

 import lombok.extern.slf4j.Slf4j;
 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.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;

 @Configuration
 @EnableBatchProcessing
 @Slf4j
 public class JobConfiguration {

     @Autowired
     private JobBuilderFactory jobBuilderFactory;

     @Autowired
     private StepBuilderFactory stepBuilderFactory;

     @Bean
     public Job helloWorldJob() {
         return jobBuilderFactory.get("helloWorldJob").start(step1()).build();
     }

     @Bean
     public Step step1() {
         return stepBuilderFactory.get("step1").tasklet(new Tasklet() {
             @Override
             public RepeatStatus execute(StepContribution stepContribution, ChunkContext chunkContext) throws Exception {
                 log.info("Hello World");
                 return RepeatStatus.FINISHED;
             }
         }).build();
     }
 }

Run

查看DB自动生成的相关Schema