Question

我的项目中定义了以下批处理项编写器，我想添加计数器和日期。你是怎么做到的？

@Bean
public JdbcBatchItemWriter<Employee> writer(DataSource dataSource) {
    return new JdbcBatchItemWriterBuilder<Employee>()
        .itemSqlParameterSourceProvider(new BeanPropertyItemSqlParameterSourceProvider<>())
        .sql("INSERT INTO t(counter, firstname, lastname, loaddate) VALUES (<HOW TO ADD COUNTER HERE>, :firstName, :lastName, <HOW TO ADD A DATE>)")
        .dataSource(dataSource)
        .build();
}

Answer 1

在bean中包含计数器和日期字段，并在ItemProcessor中设置计数器和日期的值。一旦你这样做，下面就可以了。

@Bean
public JdbcBatchItemWriter<Employee> writer(DataSource dataSource) {
    return new JdbcBatchItemWriterBuilder<Employee>()
        .itemSqlParameterSourceProvider(new BeanPropertyItemSqlParameterSourceProvider<>())
        .sql("INSERT INTO t(counter, firstname, lastname, loaddate) VALUES (**:counter**, :firstName, :lastName, **:loadDate**)")
        .dataSource(dataSource)
        .build();
}

如何在Spring Batch JdbcBatchItemWriter中包含一个计数器

1 个答案: