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<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.0</version>
</dependency>

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import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Data;
import java.io.Serializable;
import java.util.Date;
@Data
@JsonIgnoreProperties(value = { "address", "score" })
public class Student implements Serializable {
@JsonProperty(value = "sName", required = true)
private String name;
@JsonIgnore
private int age;
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GTM+8")
private Date birthday;
private String address;
private String score;
}

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public class TestMain {
public static void main(String[] args) throws JsonProcessingException {
Student student = new Student();
student.setName("张三");
student.setAge(20);
student.setBirthday(new Date());
student.setAddress("上海市");
student.setScore("90");
// 使用writeValuesAsString把对象转化成json字符串。
String stuJson = new ObjectMapper().writeValueAsString(student);
System.out.println(stuJson);
//使用readValue把字符串转化为对象
Student stu = new ObjectMapper().readValue(stuJson, Student.class);
System.out.println(stu.toString());
System.out.println("==============================");
String json1 = "{"age":20,"birthday":"2022-04-18 09:38:47","address":"上海市","score":"90","sName":"张三"}";
Student stu1 = new ObjectMapper().readValue(json1, Student.class);
System.out.println(stu1.toString());
}
}

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{"birthday":"2022-04-18 09:42:58","sName":"张三"}
Student(name=张三, age=0, birthday=Mon Apr 18 17:42:58 CST 2022, address=null, score=null)
==============================
Student(name=张三, age=0, birthday=Mon Apr 18 17:38:47 CST 2022, address=null, score=null)