探讨一个 Jackson 反序列化的问题

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能否将如下 json 在反序列化时去掉中间的子属性得到期望的对象结果？？

{
    "name": "John",
    "address": {
        "street": "123 Main St",
        "city": "Anytown"
    }
}

期望对象

@Data
public class Address {

    private String name;

    private String street;
    
    private String city;
}

Jackson

反序列化

子属性

11 条回复 • 2025-05-23 18:34:47 +08:00

shubiao

14 天前

这题我会
有个注解, 这样写, 具体忘了, 你问下 gpt 就行

@xxxx(address.street)
private String street;

shubiao

14 天前

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.ObjectMapper;

public class Main {
public static void main(String[] args) throws Exception {
String json = "{ \"name\": \"John\", \"address\": { \"street\": \"123 Main St\", \"city\": \"Anytown\" } }";

ObjectMapper mapper = new ObjectMapper();
Person person = mapper.readValue(json, Person.class);

System.out.println(person.getName());
System.out.println(person.getStreet());
System.out.println(person.getCity());
}
}

class Person {
private String name;

@JsonProperty("address.street")
private String street;

@JsonProperty("address.city")
private String city;

// Getters and setters
public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getStreet() {
return street;
}

public void setStreet(String street) {
this.street = street;
}

public String getCity() {
return city;
}

public void setCity(String city) {
this.city = city;
}
}