java - 使用提供的 json 字符串创建模型

Question

我想在 Spring Boot 中使用以下 json 字符串创建模型。

{
  "name": "inox",
  "seatInfo": {
    "A": {
      "numberOfSeats": 10,
      "aisleSeats": [
        0,
        5,
        6,
        9
      ]
    },
    "B": {
      "numberOfSeats": 15,
      "aisleSeats": [
        0,
        5,
        6,
        9
      ]
    },
    "D": {
      "numberOfSeats": 20,
      "aisleSeats": [
        0,
        5,
        6,
        9
      ]
    }
  }
}

到目前为止我已经这样做了。

 import java.util.Map;
 import javax.persistence.*;

 @Entity
 public class Screen {

     @Id
     @GeneratedValue
     private Long id;
     private String name;
     private Map<String, RowInfo> seatInfo;

     //getter and setters
 }


 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 import java.util.Arrays;

 @Entity
 public class RowInfo {

     @Id
     @GeneratedValue
     private Long id;
     private int numberOfSeats;
     private Integer aisleSeats[];

     //getters and setters
 }

应用程序启动时出现以下异常。

嵌套异常是org.hibernate.MappingException:无法确定类型:java.util.Map，表:屏幕，列:[org.hibernate.mapping.Column(seat_info)]

Answer 1

将 Map 接口(interface)更改为 HashMap 类型(或您喜欢的类型)。

@Entity
public class Screen {

     @Id
     @GeneratedValue
     private Long id;
     private String name;
     private HashMap<String, RowInfo> seatInfo;

     //getter and setters
 }


 import javax.persistence.Entity;
 import javax.persistence.GeneratedValue;
 import javax.persistence.Id;
 import java.util.Arrays;

 @Entity
 public class RowInfo {

     @Id
     @GeneratedValue
     private Long id;
     private int numberOfSeats;
     private Integer aisleSeats[];

     //getters and setters
 }