java 脱敏处理

public enum SensitiveStrategy {
    
    ADDRESS(s -> s.replaceAll("(\S{3})\S{2}(\S*)\S{2}", "$1****$2****")),
    
    ID_CARD(s -> s.replaceAll("(\d{4})\d{10}(\w{4})", "$1****$2")),
    
    PHONE(s -> s.replaceAll("(\d{3})\d{4}(\d{4})", "$1****$2")),
    
    USERNAME(s -> s.replaceAll("(\S)\S(\S*)", "$1*$2"));



    private final Function desensitizer;

    SensitiveStrategy(Function desensitizer) {
        this.desensitizer = desensitizer;
    }

    public Function desensitizer() {
        return desensitizer;
    }
}

public class SensitiveJsonSerializer extends JsonSerializer implements ContextualSerializer {
    private SensitiveStrategy strategy;

    @Override
    public void serialize(String value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
        gen.writeString(strategy.desensitizer().apply(value));
    }

    
    @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);

    }
}

    @Sensitive(strategy = SensitiveStrategy.PHONE)
    private String mobile;
    
    
    @Sensitive(strategy = SensitiveStrategy.ID_CARD)
    private String idNo;

以上在返回的时候在json序列化的时候直接处理。