Json中的json在spring boot中不起作用

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

implementation 'com.fasterxml.jackson.core:jackson-databind'

public class User {
    private String name;
    private Address address;

    // getter 和 setter 方法
}

public class Address {
    private String street;
    private String city;

    // getter 和 setter 方法
}

public class User {
    @JsonSerialize(using = CustomDateSerializer.class)
    @JsonDeserialize(using = CustomDateDeserializer.class)
    private Date birthDate;

    // getter 和 setter 方法
}

try {
    // 解析 JSON 数据
} catch (JsonProcessingException e) {
    // 处理异常
}