基于spring batch通过mybatis plus将itemreader读出来的person，进行itemwriter的DB写入

好的，针对你的问题，我可以给出以下基本的代码实现：

1. 首先，在Spring Batch的配置文件中配置MyBatis Plus的SqlSessionFactoryBean，如下所示：

@Configuration
@EnableBatchProcessing
public class BatchConfiguration {
 
    // 省略其他配置
 
    @Bean
    public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource) throws Exception {
        SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource);
        return sessionFactory;
    }
 
    // 省略其他配置
}

2. 接下来，我们定义一个ItemReader，从数据源中读取Person对象：

@Component
public class PersonItemReader implements ItemReader<Person> {
 
    private final PersonMapper personMapper;
    private int nextPersonIndex;
    private List<Person> persons;
 
    public PersonItemReader(PersonMapper personMapper) {
        this.personMapper = personMapper;
    }
 
    @Override
    public Person read() throws Exception {
        if (persons == null) {
            persons = personMapper.selectList(null);
        }
        if (nextPersonIndex < persons.size()) {
            return persons.get(nextPersonIndex++);
        } else {
            return null;
        }
    }
}

3. 然后，我们定义一个ItemWriter，将读取到的Person对象写入到数据库中：

@Component
public class PersonItemWriter implements ItemWriter<Person> {
 
    private final PersonMapper personMapper;
 
    public PersonItemWriter(PersonMapper personMapper) {
        this.personMapper = personMapper;
    }
 
    @Override
    public void write(List<? extends Person> persons) throws Exception {
        for (Person person : persons) {
            personMapper.insert(person);
        }
    }
}

4. 最后，在Job的配置文件中，使用上述的ItemReader和ItemWriter：

@Configuration
public class JobConfiguration {
 
    @Autowired
    private JobBuilderFactory jobBuilderFactory;
 
    @Autowired
    private StepBuilderFactory stepBuilderFactory;
 
    @Autowired
    private PersonItemReader personItemReader;
 
    @Autowired
    private PersonItemWriter personItemWriter;
 
    @Bean
    public Step step() {
        return stepBuilderFactory.get("step")
                .<Person, Person>chunk(10)
                .reader(personItemReader)
                .writer(personItemWriter)
                .build();
    }
 
    @Bean
    public Job job() {
        return jobBuilderFactory.get("job")
                .start(step())
                .build();
    }
}

以上就是基于Spring Batch和MyBatis Plus实现将ItemReader读出的Person对象写入数据库的基本代码实现。