Question

我有一个学生，有一些领域。我想为返回的JSON字段提供自定义名称。

public class Student {


    @JsonProperty("name")
    private String mName;

    @JsonProperty("DOB")
    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
    private Date mBirthDate;

    @JsonProperty("SSN")
    private String mSocialSecurityNumber;

    public Student() {
    }

    public Student(String mName, Date mBirthDate, String mSocialSecurityNumber) {
        this.mName = mName;
        this.mBirthDate = mBirthDate;
        this.mSocialSecurityNumber = mSocialSecurityNumber;
    }


    public String getName() {
        return mName;
    }

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

    public Date getBirthDate() {
        return mBirthDate;
    }

    public void setBirthDate(Date mBirthDate) {
        this.mBirthDate = mBirthDate;
    }

    public String getSocialSecurityNumber() {
        return mSocialSecurityNumber;
    }

    public void setSocialSecurityNumber(String mSocialSecurityNumber) {
        this.mSocialSecurityNumber = mSocialSecurityNumber;
    }
}

我的JSON输出包含原始字段名称（基于getter名称，例如getSocialSecurityNumber（）），以及我的@JsonProperty属性中指定的名称。

似乎我将@JsonProperty属性移动到getter，然后我没有获得字段的加倍。有没有办法只通过在田地上注释就可以做到这一点，我觉得它更干净了？

Answer 1

将ObjectMapper配置为仅考虑字段：

ObjectMapper mapper = new ObjectMapper();    
mapper.setVisibility(PropertyAccessor.ALL, Visibility.NONE);
mapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);

在Spring Boot中，您可以使用Jackson2ObjectMapperBuilder配置ObjectMapper：

@Bean
public Jackson2ObjectMapperBuilder objectMapperBuilder() {

    return new Jackson2ObjectMapperBuilder() {

        @Override
        public void configure(ObjectMapper objectMapper) {
            super.configure(objectMapper);
            objectMapper.setVisibility(PropertyAccessor.ALL, Visibility.NONE);
            objectMapper.setVisibility(PropertyAccessor.FIELD, Visibility.ANY);
        }
    };
}

类字段上的@JsonProperty - 在JSON中获取重复字段

1 个答案: