基于SpringBoot的停车场收费系统的管理员角度的功能，获取用户信息管理、车辆信息管理、缴费信息管理、车辆入库和出库、评价信息管理、充值信息管理、优惠信息管理功能中的实体类

以下是基于SpringBoot的停车场收费系统的管理员角度的功能中的实体类：

1. 用户信息管理：UserEntity

@Entity
@Table(name = "user")
public class UserEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String username;
    private String password;
    private String phone;
    private String email;
    private String plateNumber;
    // getter and setter methods
}

2. 车辆信息管理：CarEntity

@Entity
@Table(name = "car")
public class CarEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String plateNumber;
    private String brand;
    private String color;
    // getter and setter methods
}

3. 缴费信息管理：PaymentEntity

@Entity
@Table(name = "payment")
public class PaymentEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private Long userId;
    private String plateNumber;
    private double amount;
    private LocalDateTime paymentTime;
    // getter and setter methods
}

4. 车辆入库和出库：ParkingLotEntity

@Entity
@Table(name = "parking_lot")
public class ParkingLotEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String plateNumber;
    private LocalDateTime enterTime;
    private LocalDateTime exitTime;
    private double cost;
    // getter and setter methods
}

5. 评价信息管理：ReviewEntity

@Entity
@Table(name = "review")
public class ReviewEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private Long userId;
    private String plateNumber;
    private String comment;
    private LocalDateTime createTime;
    // getter and setter methods
}

6. 充值信息管理：RechargeEntity

@Entity
@Table(name = "recharge")
public class RechargeEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private Long userId;
    private double amount;
    private LocalDateTime createTime;
    // getter and setter methods
}

7. 优惠信息管理：DiscountEntity

@Entity
@Table(name = "discount")
public class DiscountEntity {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private String description;
    private double discount;
    // getter and setter methods
}

以上实体类对应数据库中的表，通过JPA可以方便地进行增删改查操作。