如何使用Spring Batch进行批处理任务管理
import org.springframework.batch.item.ItemProcessor;
import org.springframework.batch.item.ItemReader;
import org.springframework.batch.item.ItemWriter;
import org.springframework.context.annotation.Bean;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import javax.sql.DataSource;
import java.util.List;
@Configuration
public class BatchConfiguration {
@Bean
public DataSource dataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.hsqldb.jdbc.JDBCDriver");
dataSource.setUrl("jdbc:hsqldb:mem:testdb");
dataSource.setUsername("sa");
dataSource.setPassword("");
return dataSource;
}
@Bean
public JdbcTemplate jdbcTemplate(DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
@Bean
public ItemReader
return () -> {
List
return data.iterator().hasNext() ? data.iterator().next() : null;
};
}
@Bean
public ItemProcessor
return item -> item.toUpperCase();
}
@Bean
public ItemWriter
return items -> {
for (String item : items) {
jdbcTemplate.update("INSERT INTO processed_people (name) VALUES (?)", item);
}
};
}
@Bean
public Job job(JobBuilderFactory jobBuilderFactory, StepBuilderFactory stepBuilderFactory) {
Step step = stepBuilderFactory.get("step1")
.
.reader(reader(null))
.processor(processor())
.writer(writer(null))
.build();
return jobBuilderFactory.get("job")
.incrementer(new RunIdIncrementer())
.start(step)
.build();
}
}