JSON.toJSONString过程中出现实体类的属性与转换之前的顺序不一致
public static void main(String[] args) {
Person person = new Person();
person.setName("Tom");
person.setAge(20);
person.setGender("Male");
person.setHeight(180.5);
person.setWeight(80.5);
System.out.println(JSON.toJSONString(person));
}
使用注解指定属性的输出顺序
第一种：通过在实体类添加@JSONType(orders={"name","age","gender","height","weight"})
@JSONType(orders={"name","age","gender","height","weight"})
public class Person {
private String name;
private Integer age;
private String gender;
private Double height;
private Double weight;
}
第二种：在属性上添加@JSONField(ordinal = 1)
public class Person {
@JSONField(ordinal = 1)
private String name;
@JSONField(ordinal = 2)
private Integer age;
@JSONField(ordinal = 3)
private String gender;
@JSONField(ordinal = 4)
private Double height;
@JSONField(ordinal = 5)
private Double weight;
}