黑名单需求实现 模板 （一） 获取黑名单列表

pojo

import lombok.AllArgsConstructor;

import lombok.Data;

import lombok.NoArgsConstructor;

@Data

@NoArgsConstructor

@AllArgsConstructor

public class BlackList extends BasePojo {

private Long id;

private Long userId;

private Long blackUserId;

}

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mapper 存 mysql

import com.baomidou.mybatisplus.core.mapper.BaseMapper;

import com.tanhua.common.pojo.BlackList;

public interface BlackListMapper extends BaseMapper<BlackList> {

}

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service 黑名单 需求 核心逻辑 获取黑名单列表

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;

import com.baomidou.mybatisplus.core.metadata.IPage;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;

import com.tanhua.common.mapper.BlackListMapper;

import com.tanhua.common.pojo.BlackList;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

@Service

public class BlackListService {

@Autowired

private BlackListMapper blackListMapper;

public IPage<BlackList> queryBlacklist(Long userId,黑名 Integer page, Integer pageSize) {

QueryWrapper<BlackList> wrapper = new QueryWrapper<BlackList>();

wrapper.eq("user_id", userId);

wrapper.orderByDesc("created");

Page<BlackList> pager = new Page<>(page, pageSize);

return this.blackListMapper.selectPage(pager, wrapper);

}

}