--- title: DBがデフォルトで不要になったSpring Batch 6 / Spring Boot 4でHello Worldジョブを試す summary: Spring Batch 6 / Spring Boot 4ではデフォルトでDBが不要になりました。この記事ではHello Worldジョブを作成し、GraalVMネイティブイメージで実行する方法を紹介します。 tags: ["Spring Batch", "Spring Boot", "Java", "Spring"] categories: ["Programming", "Java", "org", "springframework", "batch"] date: 2026-01-24T01:41:45.203Z updated: 2026-01-24T01:41:45.203Z --- [以前の記事](/entries/847)でSpring Batch 5 / Spring Boot 3系でDBを使わないSpring Batchジョブの起動方法について説明しましたが、[Spring Batch 6 / Spring Boot 4では**デフォルトでDB不要**](https://docs.spring.io/spring-batch/reference/6.0/whatsnew.html#_resourceless_batch_infrastructure_by_default)になっています。 この記事では、[以前の記事](/entries/847)で実装したHello Worldジョブを再実装してみます。 > [!NOTE] > この記事はSpring Batch 6.0.2 / Spring Boot 4.0.2で検証しました。 ### Spring Bootプロジェクトの作成 Spring Batch のプロジェクトを次のコマンドで作成します。 ```bash curl https://start.spring.io/starter.tgz \ -d type=maven-project \ -d artifactId=hello-spring-batch \ -d baseDir=hello-spring-batch \ -d packageName=com.example.hello \ -d dependencies=batch,native \ -d applicationName=HelloSpringBatchApplication | tar -xzvf - cd hello-spring-batch ``` ### Jobの定義 次のようにJobを定義します。Tasklet 指定時に `PlatformTransactionManager` を設定しない場合、`ResourcelessTransactionManager` が使われるようになりました。 ```java cat < src/main/java/com/example/hello/JobConfig.java package com.example.hello; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.batch.core.configuration.annotation.StepScope; import org.springframework.batch.core.job.Job; import org.springframework.batch.core.job.builder.JobBuilder; import org.springframework.batch.core.repository.JobRepository; import org.springframework.batch.core.step.Step; import org.springframework.batch.core.step.builder.StepBuilder; import org.springframework.batch.core.step.tasklet.Tasklet; import org.springframework.batch.infrastructure.repeat.RepeatStatus; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration(proxyBeanMethods = false) public class JobConfig { private final Logger log = LoggerFactory.getLogger(JobConfig.class); private final JobRepository jobRepository; public JobConfig(JobRepository jobRepository) { this.jobRepository = jobRepository; } @Bean @StepScope public Tasklet helloTasklet() { return (contribution, chunkContext) -> { log.info("Hello World!"); return RepeatStatus.FINISHED; }; } @Bean public Step step1(Tasklet helloTasklet) { return new StepBuilder("step1", jobRepository).tasklet(helloTasklet) .build(); } @Bean public Job job1(Step step1) { return new JobBuilder("job1", jobRepository).start(step1).build(); } } EOF ``` ### 実行 次のコマンドでビルドと実行を行います。 ```bash ./mvnw clean package -DskipTests java -jar target/hello-spring-batch-0.0.1-SNAPSHOT.jar ``` ``` . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v4.0.2) 2026-01-24T10:32:48.592+09:00 INFO 98071 --- [demo] [ main] c.e.hello.HelloSpringBatchApplication : Starting HelloSpringBatchApplication v0.0.1-SNAPSHOT using Java 25.0.1 with PID 98071 (/private/tmp/hello-spring-batch/target/hello-spring-batch-0.0.1-SNAPSHOT.jar started by toshiaki in /private/tmp/hello-spring-batch) 2026-01-24T10:32:48.594+09:00 INFO 98071 --- [demo] [ main] c.e.hello.HelloSpringBatchApplication : No active profile set, falling back to 1 default profile: "default" 2026-01-24T10:32:48.811+09:00 INFO 98071 --- [demo] [ main] c.e.hello.HelloSpringBatchApplication : Started HelloSpringBatchApplication in 0.359 seconds (process running for 0.532) 2026-01-24T10:32:48.813+09:00 INFO 98071 --- [demo] [ main] o.s.b.b.a.JobLauncherApplicationRunner : Running default command line with: [] 2026-01-24T10:32:48.835+09:00 INFO 98071 --- [demo] [ main] o.s.b.c.l.s.TaskExecutorJobLauncher : Job: [SimpleJob: [name=job1]] launched with the following parameters: [{}] 2026-01-24T10:32:48.837+09:00 INFO 98071 --- [demo] [ main] o.s.batch.core.job.SimpleStepHandler : Executing step: [step1] 2026-01-24T10:32:48.840+09:00 DEBUG 98071 --- [demo] [ main] s.b.i.s.t.ResourcelessTransactionManager : Creating new transaction with name [null]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT 2026-01-24T10:32:48.841+09:00 INFO 98071 --- [demo] [ main] com.example.hello.JobConfig : Hello World! 2026-01-24T10:32:48.841+09:00 DEBUG 98071 --- [demo] [ main] s.b.i.s.t.ResourcelessTransactionManager : Initiating transaction commit 2026-01-24T10:32:48.842+09:00 DEBUG 98071 --- [demo] [ main] s.b.i.s.t.ResourcelessTransactionManager : Committing resourceless transaction on [org.springframework.batch.infrastructure.support.transaction.ResourcelessTransactionManager$ResourcelessTransaction@58b71ceb] 2026-01-24T10:32:48.842+09:00 INFO 98071 --- [demo] [ main] o.s.batch.core.step.AbstractStep : Step: [step1] executed in 4ms 2026-01-24T10:32:48.843+09:00 INFO 98071 --- [demo] [ main] o.s.b.c.l.s.TaskExecutorJobLauncher : Job: [SimpleJob: [name=job1]] completed with the following parameters: [{}] and the following status: [COMPLETED] in 5ms ``` 無事に起動できました。 ### GraalVM Native Imageでの実行 Native Image化も簡単です。GraalVM Native Imageで実行する場合は、次のコマンドでビルドと実行を行います。私の手元の環境(Mac M4 Max, 128GB RAM)では20秒くらいでビルドが終わりました。 ```bash ./mvnw native:compile -Pnative -DskipTests ./target/hello-spring-batch ``` ``` . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v4.0.2) 2026-01-24T10:35:01.048+09:00 INFO 98324 --- [demo] [ main] c.e.hello.HelloSpringBatchApplication : Starting AOT-processed HelloSpringBatchApplication using Java 25.0.1 with PID 98324 (/private/tmp/hello-spring-batch/target/hello-spring-batch started by toshiaki in /private/tmp/hello-spring-batch) 2026-01-24T10:35:01.048+09:00 INFO 98324 --- [demo] [ main] c.e.hello.HelloSpringBatchApplication : No active profile set, falling back to 1 default profile: "default" 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] c.e.hello.HelloSpringBatchApplication : Started HelloSpringBatchApplication in 0.01 seconds (process running for 0.019) 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] o.s.b.b.a.JobLauncherApplicationRunner : Running default command line with: [] 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] o.s.b.c.l.s.TaskExecutorJobLauncher : Job: [SimpleJob: [name=job1]] launched with the following parameters: [{}] 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] o.s.batch.core.job.SimpleStepHandler : Executing step: [step1] 2026-01-24T10:35:01.052+09:00 DEBUG 98324 --- [demo] [ main] s.b.i.s.t.ResourcelessTransactionManager : Creating new transaction with name [null]: PROPAGATION_REQUIRED,ISOLATION_DEFAULT 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] com.example.hello.JobConfig : Hello World! 2026-01-24T10:35:01.052+09:00 DEBUG 98324 --- [demo] [ main] s.b.i.s.t.ResourcelessTransactionManager : Initiating transaction commit 2026-01-24T10:35:01.052+09:00 DEBUG 98324 --- [demo] [ main] s.b.i.s.t.ResourcelessTransactionManager : Committing resourceless transaction on [org.springframework.batch.infrastructure.support.transaction.ResourcelessTransactionManager$ResourcelessTransaction@7eb43831] 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] o.s.batch.core.step.AbstractStep : Step: [step1] executed in 2026-01-24T10:35:01.052+09:00 INFO 98324 --- [demo] [ main] o.s.b.c.l.s.TaskExecutorJobLauncher : Job: [SimpleJob: [name=job1]] completed with the following parameters: [{}] and the following status: [COMPLETED] in ``` こちらも問題なく実行できました。 --- Spring Batch 6 / Spring Boot 4でデータベースを使わずにJobを作成・実行する方法を紹介しました。 今までSpring Batchのフレームワークは使いたかったけれど、メタデータDBの扱いがいやで、CommandLineRunnerなどでバッチ処理を実装していた方は多いのではないでしょうか？そういう方には朗報です。Spring Batch 6でインフラストラクチャの大きな改善がありました（Breaking Changesも多数ありますが…）。