员工管理（条件分页查询）
1.建表
点击查看代码
-- 员工表
create table emp(
id int unsigned primary key auto_increment comment 'ID,主键',
username varchar(20) not null unique comment '用户名',
password varchar(32) default '123456' comment '密码',
name varchar(10) not null comment '姓名',
gender tinyint unsigned not null comment '性别, 1:男, 2:女',
phone char(11) not null unique comment '手机号',
job tinyint unsigned comment '职位, 1 班主任, 2 讲师 , 3 学工主管, 4 教研主管, 5 咨询师',
salary int unsigned comment '薪资',
image varchar(255) comment '头像',
entry_date date comment '入职日期',
dept_id int unsigned comment '部门ID',
create_time datetime comment '创建时间',
update_time datetime comment '修改时间'
) comment '员工表';
INSERT INTO emp VALUES
(1,'shinaian','123456','施耐庵',1,'13309090001',4,15000,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2000-01-01',2,'2023-10-20 16:35:33','2023-11-16 16:11:26'),
(2,'songjiang','123456','宋江',1,'13309090002',2,8600,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2015-01-01',2,'2023-10-20 16:35:33','2023-10-20 16:35:37'),
(3,'lujunyi','123456','卢俊义',1,'13309090003',2,8900,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2008-05-01',2,'2023-10-20 16:35:33','2023-10-20 16:35:39'),
(4,'wuyong','123456','吴用',1,'13309090004',2,9200,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2007-01-01',2,'2023-10-20 16:35:33','2023-10-20 16:35:41'),
(5,'gongsunsheng','123456','公孙胜',1,'13309090005',2,9500,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2012-12-05',2,'2023-10-20 16:35:33','2023-10-20 16:35:43'),
(6,'huosanniang','123456','扈三娘',2,'13309090006',3,6500,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2013-09-05',1,'2023-10-20 16:35:33','2023-10-20 16:35:45'),
(7,'chaijin','123456','柴进',1,'13309090007',1,4700,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2005-08-01',1,'2023-10-20 16:35:33','2023-10-20 16:35:47'),
(8,'likui','123456','李逵',1,'13309090008',1,4800,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2014-11-09',1,'2023-10-20 16:35:33','2023-10-20 16:35:49'),
(9,'wusong','123456','武松',1,'13309090009',1,4900,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2011-03-11',1,'2023-10-20 16:35:33','2023-10-20 16:35:51'),
(10,'linchong','123456','林冲',1,'13309090010',1,5000,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2013-09-05',1,'2023-10-20 16:35:33','2023-10-20 16:35:53'),
(11,'huyanzhuo','123456','呼延灼',1,'13309090011',2,9700,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2007-02-01',2,'2023-10-20 16:35:33','2023-10-20 16:35:55'),
(12,'xiaoliguang','123456','小李广',1,'13309090012',2,10000,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2008-08-18',2,'2023-10-20 16:35:33','2023-10-20 16:35:57'),
(13,'yangzhi','123456','杨志',1,'13309090013',1,5300,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2012-11-01',1,'2023-10-20 16:35:33','2023-10-20 16:35:59'),
(14,'shijin','123456','史进',1,'13309090014',2,10600,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2002-08-01',2,'2023-10-20 16:35:33','2023-10-20 16:36:01'),
(15,'sunerniang','123456','孙二娘',2,'13309090015',2,10900,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2011-05-01',2,'2023-10-20 16:35:33','2023-10-20 16:36:03'),
(16,'luzhishen','123456','鲁智深',1,'13309090016',2,9600,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2010-01-01',2,'2023-10-20 16:35:33','2023-10-20 16:36:05'),
(17,'liying','12345678','李应',1,'13309090017',1,5800,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2015-03-21',1,'2023-10-20 16:35:33','2023-10-20 16:36:07'),
(18,'shiqian','123456','时迁',1,'13309090018',2,10200,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2015-01-01',2,'2023-10-20 16:35:33','2023-10-20 16:36:09'),
(19,'gudasao','123456','顾大嫂',2,'13309090019',2,10500,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2008-01-01',2,'2023-10-20 16:35:33','2023-10-20 16:36:11'),
(20,'ruanxiaoer','123456','阮小二',1,'13309090020',2,10800,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2018-01-01',2,'2023-10-20 16:35:33','2023-10-20 16:36:13'),
(21,'ruanxiaowu','123456','阮小五',1,'13309090021',5,5200,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2015-01-01',3,'2023-10-20 16:35:33','2023-10-20 16:36:15'),
(22,'ruanxiaoqi','123456','阮小七',1,'13309090022',5,5500,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2016-01-01',3,'2023-10-20 16:35:33','2023-10-20 16:36:17'),
(23,'ruanji','123456','阮籍',1,'13309090023',5,5800,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2012-01-01',3,'2023-10-20 16:35:33','2023-10-20 16:36:19'),
(24,'tongwei','123456','童威',1,'13309090024',5,5000,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2006-01-01',3,'2023-10-20 16:35:33','2023-10-20 16:36:21'),
(25,'tongmeng','123456','童猛',1,'13309090025',5,4800,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2002-01-01',3,'2023-10-20 16:35:33','2023-10-20 16:36:23'),
(26,'yanshun','123456','燕顺',1,'13309090026',5,5400,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2011-01-01',3,'2023-10-20 16:35:33','2023-11-08 22:12:46'),
(27,'lijun','123456','李俊',1,'13309090027',2,6600,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2004-01-01',2,'2023-10-20 16:35:33','2023-11-16 17:56:59'),
(28,'lizhong','123456','李忠',1,'13309090028',5,5000,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2007-01-01',3,'2023-10-20 16:35:33','2023-11-17 16:34:22'),
(30,'liyun','123456','李云',1,'13309090030',NULL,NULL,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2020-03-01',NULL,'2023-10-20 16:35:33','2023-10-20 16:36:31'),
(36,'linghuchong','123456','令狐冲',1,'18809091212',2,6800,'https://web-framework.oss-cn-hangzhou.aliyuncs.com/2023/1.jpg','2023-10-19',2,'2023-10-20 20:44:54','2023-11-09 09:41:04');
-- 员工工作经历信息
create table emp_expr(
id int unsigned primary key auto_increment comment 'ID, 主键',
emp_id int unsigned comment '员工ID',
begin date comment '开始时间',
end date comment '结束时间',
company varchar(50) comment '公司名称',
job varchar(50) comment '职位'
)comment '工作经历';
2.创建实体类Emp
点击查看代码
package com.itheima.pojo;
import lombok.Data;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;
@Data
public class Emp {
private Integer id; //ID,主键
private String username; //用户名
private String password; //密码
private String name; //姓名
private Integer gender; //性别, 1:男, 2:女
private String phone; //手机号
private Integer job; //职位, 1:班主任,2:讲师,3:学工主管,4:教研主管,5:咨询师
private Integer salary; //薪资
private String image; //头像
private LocalDate entryDate; //入职日期
private Integer deptId; //关联的部门ID
private LocalDateTime createTime; //创建时间
private LocalDateTime updateTime; //修改时间
//封装部门名称
private String deptName;
public Emp(String username, String password, Integer id, String name, Integer gender, String phone, Integer job, Integer salary, String image, LocalDate entryDate, Integer deptId, LocalDateTime createTime, LocalDateTime updateTime, String deptName) {
this.username = username;
this.password = password;
this.id = id;
this.name = name;
this.gender = gender;
this.phone = phone;
this.job = job;
this.salary = salary;
this.image = image;
this.entryDate = entryDate;
this.deptId = deptId;
this.createTime = createTime;
this.updateTime = updateTime;
this.deptName = deptName;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public Integer getJob() {
return job;
}
public void setJob(Integer job) {
this.job = job;
}
public Integer getSalary() {
return salary;
}
public void setSalary(Integer salary) {
this.salary = salary;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public LocalDate getEntryDate() {
return entryDate;
}
public void setEntryDate(LocalDate entryDate) {
this.entryDate = entryDate;
}
public Integer getDeptId() {
return deptId;
}
public void setDeptId(Integer deptId) {
this.deptId = deptId;
}
public LocalDateTime getCreateTime() {
return createTime;
}
public void setCreateTime(LocalDateTime createTime) {
this.createTime = createTime;
}
public LocalDateTime getUpdateTime() {
return updateTime;
}
public void setUpdateTime(LocalDateTime updateTime) {
this.updateTime = updateTime;
}
public String getDeptName() {
return deptName;
}
public void setDeptName(String deptName) {
this.deptName = deptName;
}
@Override
public String toString() {
return "Emp{" +
"id=" + id +
", username='" + username + '\'' +
", password='" + password + '\'' +
", name='" + name + '\'' +
", gender=" + gender +
", phone='" + phone + '\'' +
", job=" + job +
", salary=" + salary +
", image='" + image + '\'' +
", entryDate=" + entryDate +
", deptId=" + deptId +
", createTime=" + createTime +
", updateTime=" + updateTime +
", deptName='" + deptName + '\'' +
'}';
}
}
3.创建实体类EmpExpr
点击查看代码
package com.itheima.pojo;
import lombok.Data;
import java.time.LocalDate;
/**
* 工作经历
*/
@Data
public class EmpExpr {
private Integer id; //ID
private Integer empId; //员工ID
private LocalDate begin; //开始时间
private LocalDate end; //结束时间
private String company; //公司名称
private String job; //职位
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public Integer getEmpId() {
return empId;
}
public void setEmpId(Integer empId) {
this.empId = empId;
}
public LocalDate getBegin() {
return begin;
}
public void setBegin(LocalDate begin) {
this.begin = begin;
}
public LocalDate getEnd() {
return end;
}
public void setEnd(LocalDate end) {
this.end = end;
}
public String getCompany() {
return company;
}
public void setCompany(String company) {
this.company = company;
}
public String getJob() {
return job;
}
public void setJob(String job) {
this.job = job;
}
}
4.创建分页结果封装类
点击查看代码
package com.itheima.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.List;
/**
* 分页结果封装类
*/
@Data
@NoArgsConstructor
@AllArgsConstructor
public class PageResult<T> {
private Long total;
private List<T> rows;
}
6.EmpQueryParam
点击查看代码
package com.itheima.pojo;
import org.springframework.format.annotation.DateTimeFormat;
import java.time.LocalDate;
public class EmpQueryParam {
private Integer page=1;//页码
private Integer pageSize=10;//每页记录数
private String name;
private Integer gender;
@DateTimeFormat(pattern = "yyyy-MM-dd")
private LocalDate begin;//入职开始时间
@DateTimeFormat(pattern = "yyyy-MM-dd")
private LocalDate end;
public Integer getPage() {
return page;
}
public void setPage(Integer page) {
this.page = page;
}
public Integer getPageSize() {
return pageSize;
}
public void setPageSize(Integer pageSize) {
this.pageSize = pageSize;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getGender() {
return gender;
}
public void setGender(Integer gender) {
this.gender = gender;
}
public LocalDate getBegin() {
return begin;
}
public void setBegin(LocalDate begin) {
this.begin = begin;
}
public LocalDate getEnd() {
return end;
}
public void setEnd(LocalDate end) {
this.end = end;
}
}
- EmpController
点击查看代码
package com.itheima.controller;
import com.itheima.pojo.Emp;
import com.itheima.pojo.EmpQueryParam;
import com.itheima.pojo.PageResult;
import com.itheima.pojo.Result;
import com.itheima.service.EmpService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.time.LocalDate;
/**
* 员工管理Controller
*/
@Slf4j
@RequestMapping("/emps")
@RestController
public class EmpController {
@Autowired
private EmpService empService;
/**
* 分页查询
*/
@GetMapping
public Result page(EmpQueryParam empQueryParam){
log.info("分页查询: {}", empQueryParam);
PageResult<Emp> pageResult = empService.page(empQueryParam);
return Result.success(pageResult);
}
}
8.EmpMapper
点击查看代码
package com.itheima.mapper;
import com.itheima.pojo.Emp;
import com.itheima.pojo.EmpQueryParam;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;
import java.time.LocalDate;
import java.util.List;
/**
* 员工信息
*/
@Mapper
public interface EmpMapper {
// ---------------------------------- 原始分页查询实现 -------------------
/**
* 查询总记录数
*/
//@Select("select count(*) from emp e left join dept d on e.dept_id = d.id")
//public Long count();
/**
* 分页查询
*/
//@Select("select e.*, d.name deptName from emp e left join dept d on e.dept_id = d.id " +
// "order by e.update_time desc limit #{start},#{pageSize}")
//public List<Emp> list(Integer start, Integer pageSize);
//@Select("select e.*, d.name deptName from emp e left join dept d on e.dept_id = d.id order by e.update_time desc")
//public List<Emp> list(String name, Integer gender, LocalDate begin, LocalDate end);
/**
* 条件查询员工信息
*/
public List<Emp> list(EmpQueryParam empQueryParam);
}
9.EmpServiceImpl
点击查看代码
package com.itheima.service.impl;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.mapper.EmpMapper;
import com.itheima.pojo.Emp;
import com.itheima.pojo.EmpQueryParam;
import com.itheima.pojo.PageResult;
import com.itheima.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class EmpServiceImpl implements EmpService {
@Autowired
private EmpMapper empMapper;
@Override
public PageResult<Emp> page(EmpQueryParam empQueryParam) {
//1. 设置分页参数(PageHelper)
PageHelper.startPage(empQueryParam.getPage(), empQueryParam.getPageSize());
//2. 执行查询
List<Emp> empList = empMapper.list(empQueryParam);
//3. 解析查询结果, 并封装
Page<Emp> p = (Page<Emp>) empList;
return new PageResult<Emp>(p.getTotal(), p.getResult());
}
}
10.EmpService
点击查看代码
package com.itheima.service;
import com.itheima.pojo.Emp;
import com.itheima.pojo.EmpQueryParam;
import com.itheima.pojo.PageResult;
import org.springframework.format.annotation.DateTimeFormat;
import java.time.LocalDate;
public interface EmpService {
/**
* 分页查询
*/
PageResult<Emp> page(EmpQueryParam empQueryParam);
}
11.EmpMapper.xml
点击查看代码
<!--定义Mapper映射文件的约束和基本结构-->
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.itheima.mapper.EmpMapper">
<select id="list" resultType="com.itheima.pojo.Emp">
select e.*, d.name deptName from emp as e left join dept as d on e.dept_id = d.id
<where>
<if test="name != null and name != ''">
e.name like concat('%',#{name},'%')
</if>
<if test="gender != null">
and e.gender = #{gender}
</if>
<if test="begin != null and end != null">
and e.entry_date between #{begin} and #{end}
</if>
</where>
</select>
</mapper>
实现结果
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