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中国网站开发公司排名,微信建设网站找哪家,WordPress营销推广返佣插件,wordpress模板站如何安装01 背景 下午惬意时光#xff0c;突然产品小姐姐走到我面前#xff0c;打断我短暂的摸鱼 time#xff0c;企图与我进行深入交流#xff0c;还好我早有防备没有闪#xff0c;打开瑞 star 的点单页面#xff0c;暗示没有一杯 coffee 解决不了的需求。 需求是某些接口返回…01背景下午惬意时光突然产品小姐姐走到我面前打断我短暂的摸鱼 time企图与我进行深入交流还好我早有防备没有闪打开瑞 star 的点单页面暗示没有一杯 coffee 解决不了的需求。需求是某些接口返回的信息涉及到敏感数据的必须进行脱敏操作我思考一反表示某问题马上安排。02思路①要做成可配置多策略的脱敏操作要不然一个个接口进行脱敏操作重复的工作量太多很显然违背了“多写一行算我输”的程序员规范。思来想去定义数据脱敏注解和数据脱敏逻辑的接口 在返回类上对需要进行脱敏的属性加上并指定对应的脱敏策略操作。②接下来我只需要拦截控制器返回的数据找到带有脱敏注解的属性操作即可一开始打算用 ControllerAdvice 去实现但发现需要自己去反射类获取注解。当返回对象比较复杂需要递归去反射性能一下子就会降低于是换种思路我想到平时使用的 JsonFormat跟我现在的场景很类似通过自定义注解跟字段解析器对字段进行自定义解析tql。03实现代码①自定义数据注解并可以配置数据脱敏策略Target({ElementType.FIELD, ElementType.TYPE}) Retention(RetentionPolicy.RUNTIME) Documented public interface DataMasking { DataMaskingFunc maskFunc() default DataMaskingFunc.NO_MASK; }②自定义 Serializer参考 jackson 的 StringSerializer下面的示例只针对 String 类型进行脱敏。public interface DataMaskingOperation { String MASK_CHAR *; String mask(String content, String maskChar); } publicenum DataMaskingFunc { /** * 脱敏转换器 */ NO_MASK((str, maskChar) - { return str; }), ALL_MASK((str, maskChar) - { if (StringUtils.hasLength(str)) { StringBuilder sb new StringBuilder(); for (int i 0; i str.length(); i) { sb.append(StringUtils.hasLength(maskChar) ? maskChar : DataMaskingOperation.MASK_CHAR); } return sb.toString(); } else { return str; } }); privatefinal DataMaskingOperation operation; private DataMaskingFunc(DataMaskingOperation operation) { this.operation operation; } public DataMaskingOperation operation() { returnthis.operation; } } publicfinalclass DataMaskingSerializer extends StdScalarSerializerObject { privatefinal DataMaskingOperation operation; public DataMaskingSerializer() { super(String.class, false); this.operation null; } public DataMaskingSerializer(DataMaskingOperation operation) { super(String.class, false); this.operation operation; } public boolean isEmpty(SerializerProvider prov, Object value) { String str (String)value; return str.isEmpty(); } public void serialize(Object value, JsonGenerator gen, SerializerProvider provider) throws IOException { if (Objects.isNull(operation)) { String content DataMaskingFunc.ALL_MASK.operation().mask((String) value, null); gen.writeString(content); } else { String content operation.mask((String) value, null); gen.writeString(content); } } public final void serializeWithType(Object value, JsonGenerator gen, SerializerProvider provider, TypeSerializer typeSer) throws IOException { this.serialize(value, gen, provider); } public JsonNode getSchema(SerializerProvider provider, Type typeHint) { returnthis.createSchemaNode(string, true); } public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException { this.visitStringFormat(visitor, typeHint); } }③自定义 AnnotationIntrospector适配我们自定义注解返回相应的 Serializer。Slf4j public class DataMaskingAnnotationIntrospector extends NopAnnotationIntrospector { Override public Object findSerializer(Annotated am) { DataMasking annotation am.getAnnotation(DataMasking.class); if (annotation ! null) { return new DataMaskingSerializer(annotation.maskFunc().operation()); } return null; } }④覆盖 ObjectMapperConfiguration( proxyBeanMethods false ) publicclass DataMaskConfiguration { Configuration( proxyBeanMethods false ) ConditionalOnClass({Jackson2ObjectMapperBuilder.class}) staticclass JacksonObjectMapperConfiguration { JacksonObjectMapperConfiguration() { } Bean Primary ObjectMapper jacksonObjectMapper(Jackson2ObjectMapperBuilder builder) { ObjectMapper objectMapper builder.createXmlMapper(false).build(); AnnotationIntrospector ai objectMapper.getSerializationConfig().getAnnotationIntrospector(); AnnotationIntrospector newAi AnnotationIntrospectorPair.pair(ai, new DataMaskingAnnotationIntrospector()); objectMapper.setAnnotationIntrospector(newAi); return objectMapper; } } }⑤返回对象加上注解public class User implements Serializable { /** * 主键ID */ private Long id; /** * 姓名 */ DataMasking(maskFunc DataMaskingFunc.ALL_MASK) private String name; /** * 年龄 */ private Integer age; /** * 邮箱 */ DataMasking(maskFunc DataMaskingFunc.ALL_MASK) private String email; }