src/main/java/com/zgn/hospital/service/Impl/DeptServiceImpl.java

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package com.zgn.hospital.service.Impl;

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.zgn.hospital.entity.dept;
import com.zgn.hospital.entity.doctor;
import com.zgn.hospital.mapper.DeptMapper;
import com.zgn.hospital.service.DeptService;
import com.zgn.hospital.utils.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;

/**
 * @program: hospital_info
 * @description:
 * @author: ZGN
 * @create: 2023-03-14 20:27
 */
@Service
public class DeptServiceImpl implements DeptService {
    @Autowired
    DeptMapper deptMapper;

    /**
     * 分页查找
     *
     * @param currentPage
     * @param size
     * @param dept
     * @return
     */
    @Override
    public R selectByPage(int currentPage, int size, dept dept) {

        IPage<dept> page=new Page(currentPage,size);
        QueryWrapper<dept> userQueryWrapper=new QueryWrapper<>();
        IPage<dept> deptIPage=null;
        if(!dept.getDeptname().equals("")){
            userQueryWrapper.eq("deptname",dept.getDeptname());
            deptIPage=deptMapper.selectPage(page,userQueryWrapper);
        }else{
            deptIPage=deptMapper.selectPage(page,null);
        }
        return R.ok(deptIPage);
    }

    /**
     * 更新部门
     *
     * @param dept
     * @return
     */
    @Override
    public R update(dept dept) {
        deptMapper.updateById(dept);
        return R.ok("修改成功");