数据动态脱敏
业务背景
- 某些敏感数据不能展示在前台
解决方案
- 增加注解Sensitive，设置对应的脱敏策略，使用自定义的序列化器
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
@JacksonAnnotationsInside
@JsonSerialize(using = SensitiveJsonSerializer.class)
public @interface Sensitive {
//脱敏策略
SensitiveStrategy strategy();
}
- 添加对应的脱敏策略
public enum SensitiveStrategy {
/**
* 用户名
*/
USERNAME(s -> s.replaceAll("(\S)\S(\S*)", "$1*$2")),
/**
* 身份证
*/
ID_CARD(s -> s.replaceAll("(\d{4})\d{10}(\w{4})", "$1****$2")),
/**
* 手机号
*/
PHONE(s -> s.replaceAll("(\d{3})\d{4}(\d{4})", "$1****$2")),
/**
* 地址
*/
ADDRESS(s -> s.replaceAll("(\S{3})\S{2}(\S*)\S{2}", "$1****$2****"));
private final Function<String, String> desensitizer;
SensitiveStrategy(Function<String, String> desensitizer) {
this.desensitizer = desensitizer;
}
public Function<String, String> desensitizer() {
return desensitizer;
}
}
- 添加自定义序列化器
public class SensitiveJsonSerializer extends JsonSerializer<String> implements ContextualSerializer {
private SensitiveStrategy strategy;
@Override
public void serialize(String value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
gen.writeString(strategy.desensitizer().apply(value));
}
/**
* 获取属性上的注解属性
*/
@Override
public JsonSerializer<?> createContextual(SerializerProvider prov, BeanProperty property) throws JsonMappingException {
Sensitive annotation = property.getAnnotation(Sensitive.class);
if (Objects.nonNull(annotation) && Objects.equals(String.class, property.getType().getRawClass())) {
this.strategy = annotation.strategy();
return this;
}
return prov.findValueSerializer(property.getType(), property);
}
}
- 在想要数据脱敏的实体类上添加注解
@Data
public class Person {
/**
* 真实姓名
*/
@Sensitive(strategy = SensitiveStrategy.USERNAME)
private String realName;
/**
* 地址
*/
@Sensitive(strategy = SensitiveStrategy.ADDRESS)
private String address;
/**
* 电话号码
*/
@Sensitive(strategy = SensitiveStrategy.PHONE)
private String phoneNumber;
/**
* 身份证号码
*/
@Sensitive(strategy = SensitiveStrategy.ID_CARD)
private String idCard;
}
- 效果
Person person = new Person();
person.setRealName("张三");
person.setAddress("上海市天天向上路391号");
person.setIdCard("112233445500001111");
person.setPhoneNumber("15611114444");
{
"realName":"张*","address":"上海市****向上路39****","phoneNumber":"156****4444","idCard":"1122****1111"}
源码参考
应用仓库：https://gitee.com/charles_ruan/SpringBootDemo（2022/demo-tools）
