SpringBoot模拟员工数据库并实现增删改查的操作方法

这期内容当中小编将会给大家带来有关SpringBoot模拟员工数据库并实现增删改查的操作方法，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

1：首先创建一个pojo层在里面定义数据

Department部门：

package com.example.springbootweb.pojo;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;/** * @author ${范涛之} * @Description * @create 2021-09-19 10:25 */@Data@AllArgsConstructor@NoArgsConstructorpublic class Department {    private  Integer id;    private String department;}

Employee部门：

package com.example.springbootweb.pojo;import lombok.AllArgsConstructor;import lombok.Data;import lombok.NoArgsConstructor;/** * @author ${范涛之} * @Description * @create 2021-09-19 10:26 */@Data@AllArgsConstructor@NoArgsConstructorpublic class Employee {    private Integer id;    private  String lastname;    private  String email;    private  Integer gender; //0代表女 1代表男    private  Department department;    private Data birth;}

2：编写dao层注入数据：

部门层：

package com.example.springbootweb.dao;import com.example.springbootweb.pojo.Department;import java.util.Collection;import java.util.HashMap;import java.util.Map;/** * @author ${范涛之} * @Description * @create 2021-09-19 10:28 *///部门daopublic class DepartmentDao {    //模拟数据库中的数据    private  static Map department = null;    static {        department = new HashMap(); //创建一个部门表        department.put(101,new Department(101,"教学部"));        department.put(102,new Department(101,"教研部"));        department.put(103,new Department(101,"市场部"));        department.put(104,new Department(101,"运营部"));        department.put(105,new Department(101,"清洁部"));    }    //获得所有部门信息    public Collection getDepartment(){        return  department.values();    }    //通过id得到部门    public  Department getDepartment(Integer id){        return  department.get(id);    }}

员工层：

package com.example.springbootweb.dao;import com.example.springbootweb.pojo.Department;import com.example.springbootweb.pojo.Employee;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Repository;import java.util.Collection;import java.util.HashMap;import java.util.Map;/** * @author ${范涛之} * @Description * @create 2021-09-19 10:44 */@Repositorypublic class EmployeeDao {    //模拟数据库中的数据    private  static Map employees = null;    //员工有所属的部门    @Autowired    private  DepartmentDao departmentDao;    static {        employees = new  HashMap();        employees.put(1001,new Employee(1001,"AA","2831826106@qq.com",1,new Department(101,"教学部")));        employees.put(1002,new Employee(1002,"BB","2831826106@qq.com",1,new Department(101,"教研部")));        employees.put(1003,new Employee(1003,"CC","2831826106@qq.com",1,new Department(101,"市场部")));        employees.put(1004,new Employee(1004,"DD","2831826106@qq.com",1,new Department(101,"运营部")));        employees.put(1005,new Employee(1005,"EE","2831826106@qq.com",1,new Department(101,"清洁部")));    }        //主键自增    private  static  Integer ininID = 1006;    // 增加一个员工    public  void  save(Employee employee){        if (employee.getId()== null){            employee.setId(ininID++);        }        employee.setDepartment(departmentDao.getDepartmentByid(employee.getDepartment().getId()));                employees.put(employee.getId(),employee);            }    //查询全部员工    public Collection getAll(){        return  employees.values();    }    //通过ID查询员工    public  Employee getEmployeeByid(Integer id){        return  employees.get(id);            }    //删除员工拖过ID    public  void  delete(Integer id){        employees.remove(id);    }    }

部门层

package com.example.springbootweb.dao;import com.example.springbootweb.pojo.Department;import org.springframework.stereotype.Repository;import java.util.Collection;import java.util.HashMap;import java.util.Map;/** * @author ${范涛之} * @Description * @create 2021-09-19 10:28 *///部门dao@Repositorypublic class DepartmentDao {    //模拟数据库中的数据    private  static Map department = null;    static {        department = new HashMap(); //创建一个部门表        department.put(101,new Department(101,"教学部"));        department.put(102,new Department(101,"教研部"));        department.put(103,new Department(101,"市场部"));        department.put(104,new Department(101,"运营部"));        department.put(105,new Department(101,"清洁部"));    }    //获得所有部门信息    public Collection getDepartmentByid(){        return  department.values();    }    //通过id得到部门    public  Department getDepartmentByid(Integer id){        return  department.get(id);    }}

上述就是小编为大家分享的SpringBoot模拟员工数据库并实现增删改查的操作方法了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注行业资讯频道。