用户敏感信息脱敏展示

定义手机号和证件号的 Jackson 自定义序列化器，并在对应需要脱敏的敏感字段上指定自定义序列化器。在进行指定的需要脱敏的字段（身份证号，手机号，银行卡号等）序列化的时候，该字段自动变成脱敏json对象。

1）身份证号序列化器

import cn.hutool.core.util.DesensitizedUtil;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;

/**
 * 身份证号脱敏反序列化
 */
public class IdCardDesensitizationSerializer extends JsonSerializer<String> {

    @Override
    public void serialize(String idCard, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        String phoneDesensitization = DesensitizedUtil.idCardNum(idCard, 4, 4);
        jsonGenerator.writeString(phoneDesensitization);
    }
}

2）手机号序列化器

import cn.hutool.core.util.DesensitizedUtil;
import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;

import java.io.IOException;

/**
 * 手机号脱敏反序列化
 */
public class PhoneDesensitizationSerializer extends JsonSerializer<String> {

    @Override
    public void serialize(String phone, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
        String phoneDesensitization = DesensitizedUtil.mobilePhone(phone);
        jsonGenerator.writeString(phoneDesensitization);
    }
}

3） 敏感字段上自定义序列化器。

import com.fasterxml.jackson.annotation.JsonFormat;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import lombok.experimental.Accessors;

import java.util.Date;

/**
 * 乘车人返回参数
 */
@Data
@Accessors(chain = true)
public class PassengerRespDTO {

    /**
     * 证件号码
     */
    @JsonSerialize(using = IdCardDesensitizationSerializer.class)
    private String idCard;

    /**
     * 手机号
     */
    @JsonSerialize(using = PhoneDesensitizationSerializer.class)
    private String phone;
}