1. 集合数据分组处理

最新推荐文章于 2022-10-05 15:27:18 发布

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最新推荐文章于 2022-10-05 15:27:18 发布

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分类专栏：开发生涯记录文章标签：集合

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Demo01

Data
@Builder
@AllArgsConstructor
@NoArgsConstructor
public class UserEntity {

    private Integer userAge;
    private String userName;
    private Integer userMobile;
    private String userId;
    private String userPassword;

    public UserEntity(String userName, Integer userAge) {
        this.userAge = userAge;
        this.userName = userName;
    }
}

@Slf4j
public class Demo01 {

    public static void main(String[] args) {

        List<UserEntity> userList = new ArrayList<>(1000);
        userList.add(new UserEntity("zhangsan", 11));
        userList.add(new UserEntity("lisi", 12));
        userList.add(new UserEntity("wangwu", 13));
        userList.add(new UserEntity("zhaoliu", 14));
        userList.add(new UserEntity("tianqi", 15));

        // 集合数组分组数据处理
        Lists.partition(userList, 2).forEach(record -> {
            log.info("批量逻辑处理.. record：" + JSON.toJSONString(record));
            log.info("处理成功记录：" + record.stream().map(UserEntity::getUserName).collect(Collectors.joining(",")));
        });
    }
}

控制台日志：

12:17:00.909 [main] INFO com.maplefire.demo.Demo01 - 批量逻辑处理.. record：[{"userAge":11,"userName":"zhangsan"},{"userAge":12,"userName":"lisi"}]
12:17:00.917 [main] INFO com.maplefire.demo.Demo01 - 处理成功记录：zhangsan,lisi
12:17:00.917 [main] INFO com.maplefire.demo.Demo01 - 批量逻辑处理.. record：[{"userAge":13,"userName":"wangwu"},{"userAge":14,"userName":"zhaoliu"}]
12:17:00.917 [main] INFO com.maplefire.demo.Demo01 - 处理成功记录：wangwu,zhaoliu
12:17:00.917 [main] INFO com.maplefire.demo.Demo01 - 批量逻辑处理.. record：[{"userAge":15,"userName":"tainqi"}]
12:17:00.917 [main] INFO com.maplefire.demo.Demo01 - 处理成功记录：tainqi