Question

我想使用多个数据源，一个用于Spring Batch元数据，另一个用于业务数据。我的批处理作业刚刚运行，甚至没有尝试连接到secondaryDataSource。有人可以指出我的配置有什么问题吗？

@Configuration
@EnableBatchProcessing
public class BatchConfiguration extends DefaultBatchConfigurer {

    @Override
    @Autowired
    public void setDataSource(
            @Qualifier("batchDataSource") DataSource batchDataSource) {
        super.setDataSource(batchDataSource);
    }
}

public class SpringBatchConfig {

    @Autowired
    private JobBuilderFactory jobs;

    @Autowired
    private StepBuilderFactory steps;

    private static final String QUERY_FIND_STUDENTS = "select * from ...";

    @Bean
    ItemReader<DotDetailsDTO> reader(
            @Qualifier("secondaryDataSource") DataSource dataSource)
            throws SQLException {
        JdbcCursorItemReader<DotDetailsDTO> databaseReader = new JdbcCursorItemReader<>();

        databaseReader.setDataSource(dataSource);
        databaseReader.setSql(QUERY_FIND_STUDENTS);
        databaseReader.setRowMapper(new DOTRowMapper());

        return databaseReader;
    }

    @Bean
    public ItemProcessor<DotDetailsDTO, DotDetailsDTO> itemProcessor() {
        return new CustomItemProcessor();
    }

    @Bean
    public ItemWriter<DotDetailsDTO> writer() throws Exception {
        FlatFileItemWriter<DotDetailsDTO> writer = new FlatFileItemWriter<DotDetailsDTO>();
        writer.setResource(new ClassPathResource("file:test.csv"));
        DelimitedLineAggregator<DotDetailsDTO> delLineAgg = new DelimitedLineAggregator<DotDetailsDTO>();
        delLineAgg.setDelimiter(",");
        BeanWrapperFieldExtractor<DotDetailsDTO> fieldExtractor = new BeanWrapperFieldExtractor<DotDetailsDTO>();
        fieldExtractor.setNames(new String[] { "airwayBillNumber",
                "outboundDate", "orig", "dest", "lotNumber",
                "lotFlightNumber", "lotOrig", "lotDest", "lotPcs", "lotWt",
                "lotFlightDepartDate", "iataCode" });
        delLineAgg.setFieldExtractor(fieldExtractor);
        writer.setLineAggregator(delLineAgg);
        writer.afterPropertiesSet();
        return writer;
    }

    @Bean
    protected Step step1(ItemReader<DotDetailsDTO> reader,
            ItemProcessor<DotDetailsDTO, DotDetailsDTO> processor,
            ItemWriter<DotDetailsDTO> writer) throws SQLException {
        return steps.get("step1").<DotDetailsDTO, DotDetailsDTO> chunk(10)
                .reader(reader).processor(processor).writer(writer).build();
    }

    @Bean(name = "firstBatchJob")
    public Job job(@Qualifier("step1") Step step1) {
        return jobs.get("firstBatchJob").start(step1).build();
    }

}

public class DataSourceConfiguration {

    @Bean(name="batchDataSource")
    public DataSource dataSource() throws SQLException {
        BasicDataSource dataSource = new BasicDataSource();
        ...
        return dataSource;
    }

    @Bean
    public JdbcTemplate jdbcTemplate(
            @Qualifier("batchDataSource") final DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }

    @Primary
    @Bean(name="secondaryDataSource")
    public DataSource secondaryDataSource() throws SQLException {
        OracleDataSource secondaryDataSource = new OracleDataSource();
        ...
        return secondaryDataSource;
    }

    @Bean
    public JdbcTemplate secondaryJdbcTemplate(
            @Qualifier("secondaryDataSource") final DataSource secondaryDataSource) {
        return new JdbcTemplate(secondaryDataSource);
    }
}

public static void main(String[] args) {
    // Spring Java config
    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
    context.register(DataSourceConfiguration.class);
    context.register(BatchConfiguration.class);
    context.register(SpringBatchConfig.class);
    context.refresh();

    JobLauncher jobLauncher = (JobLauncher) context.getBean("jobLauncher");
    Job job = (Job) context.getBean("firstBatchJob");
    System.out.println("Starting the batch job");
    try {
        JobExecution execution = jobLauncher.run(job, new JobParameters());
        System.out.println("Job Status : " + execution.getStatus());
        System.out.println("Job completed");
    } catch (Exception e) {
        e.printStackTrace();
        System.out.println("Job failed");
    }

}

Answer 1

2天后我知道问题是什么。我没有提供新的JobParameters，因为我一遍又一遍地运行同样破旧的工作。

以下是main方法中的修复。

{{1}}

Spring Batch不从DB读取也不写入文件

1 个答案: