Spring batch -配置线程数

@Bean
public TaskExecutor taskExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(10);
    executor.setMaxPoolSize(20);
    executor.setQueueCapacity(30);
    return executor;
}

@Bean
public Step myStep(TaskExecutor taskExecutor) {
    return stepBuilderFactory.get("myStep")
            .<Input, Output>chunk(100)
            .reader(reader())
            .processor(processor())
            .writer(writer())
            .taskExecutor(taskExecutor)
            .build();
}

<bean id="taskExecutor" class="org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor">
    <property name="corePoolSize" value="10" />
    <property name="maxPoolSize" value="20" />
    <property name="queueCapacity" value="30" />
</bean>

<batch:step id="myStep">
    <batch:tasklet task-executor="taskExecutor">
        <batch:chunk reader="reader" processor="processor" writer="writer" commit-interval="100" />
    </batch:tasklet>
</batch:step>