dianshang-houduan/src/main/java/com/sztzjy/linkCommerce/service/impl/UserInfoServiceImpl.java

package com.sztzjy.linkCommerce.service.impl;

import com.sztzjy.linkCommerce.entity.Userinfo;
import com.sztzjy.linkCommerce.entity.UserinfoExample;
import com.sztzjy.linkCommerce.mapper.*;

import com.sztzjy.linkCommerce.service.UserInfoService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;


@Service
public class UserInfoServiceImpl implements UserInfoService {
    @Autowired
    UserinfoMapper userInfoMapper;
    @Autowired
    SchoolMapper schoolMapper;
    @Autowired
    SchoolFacultyMapper schoolFacultyMapper;
    @Autowired
    SchoolMajorMapper schoolMajorMapper;
    @Autowired
    SchoolClassMapper schoolClassMapper;

    @Override
    public boolean existsByUserName(String userName) {
        UserinfoExample userInfoExample = new UserinfoExample();
        userInfoExample.createCriteria().andUsernameEqualTo(userName);
        List<Userinfo> userInfos = userInfoMapper.selectByExample(userInfoExample);
        if(userInfos.isEmpty() || userInfos==null){
            return false;
        }else {
            return true;
        }
    }
}