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這篇文章主要介紹“基于序列化怎么實(shí)現(xiàn)jackson”,在日常操作中,相信很多人在基于序列化怎么實(shí)現(xiàn)jackson問(wèn)題上存在疑惑,小編查閱了各式資料,整理出簡(jiǎn)單好用的操作方法,希望對(duì)大家解答”基于序列化怎么實(shí)現(xiàn)jackson”的疑惑有所幫助!接下來(lái),請(qǐng)跟著小編一起來(lái)學(xué)習(xí)吧!
基于序列化的實(shí)現(xiàn)
Fastjson實(shí)現(xiàn)
實(shí)現(xiàn)思路:
自定義注解,可讓用戶自定義脫敏方式,用于實(shí)體類的屬性
基于ValueFilter進(jìn)行 屬性注解攔截,并多value進(jìn)行替換脫敏
使用json序列化對(duì)象是指定自定義序列化Filter
核心代碼如下
自定義注解Desensitization
@Target(ElementType.FIELD) @Retention(RetentionPolicy.RUNTIME) public @interface Desensitization { /** * 脫敏規(guī)則 * * @return */ DesensitionEnum desensitionEnum(); }
脫敏方法
/** * 脫敏的函數(shù)接口 */ public interface Desensitizer extends Function<String, String> { } @Getter public enum DesensitionEnum { /** * 用戶名脫敏 */ USERNAME("userName", "用戶名",s -> s.replaceAll("(\\S)\\S(\\S*)", "$1*$2")), /** * 身份證號(hào)碼脫敏 */ ID_CARD("idCard", "15或者18身份證號(hào)",s -> s.replaceAll("(\\d{4})\\d{10}(\\w{4})", "$1****$2")), /** * 手機(jī)號(hào)脫敏 */ PHONE("phone", "手機(jī)號(hào)",s -> s.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2")), /** * 地址脫敏 */ ADDRESS("address", "地址脫敏",s -> s.replaceAll("(\\S{8})\\S{4}(\\S*)\\S{4}", "$1****$2****")); String fieldName; String fieldDescribe; private final Desensitizer desensitizer; DesensitionEnum(String fieldName, String fieldDescribe, Desensitizer desensitizer) { this.fieldName = fieldName; this.fieldDescribe = fieldDescribe; this.desensitizer = desensitizer; } }
具體攔截
public class FastjsonDesensitizeFilter implements ValueFilter { @Override public Object process(Object object, String name, Object value) { if (null == value || !(value instanceof String) || ((String) value).length() == 0) { return value; } try { Field field = object.getClass().getDeclaredField(name); Desensitization desensitization; if (String.class != field.getType() || (desensitization = field.getAnnotation(Desensitization.class)) == null) { return value; } return desensitization.desensitionEnum().getDesensitizer().apply((String) value); } catch (Exception e) { return value; } } }
Jackson實(shí)現(xiàn)
解釋:
獲取對(duì)象屬性上的注解,根據(jù)屬性得到相應(yīng)的脫敏規(guī)則類型
按照規(guī)則類型進(jìn)行value替換
自定義注解
@Target(ElementType.FIELD) @Retention(RetentionPolicy.RUNTIME) @JsonSerialize(using = JacksonDesensitize.class) @JacksonAnnotationsInside public @interface Desensitization { /** * 脫敏規(guī)則 * * @return */ DesensitionEnum desensitionEnum(); } package com.demo.desensitization; import com.fasterxml.jackson.core.JsonGenerator; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.BeanProperty; import com.fasterxml.jackson.databind.JsonMappingException; import com.fasterxml.jackson.databind.JsonSerializer; import com.fasterxml.jackson.databind.SerializerProvider; import com.fasterxml.jackson.databind.ser.ContextualSerializer; import java.io.IOException; import java.util.Objects; public class JacksonDesensitize extends JsonSerializer<String> implements ContextualSerializer { private DesensitionEnum desensitionEnum; @Override public void serialize(String value, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException { jsonGenerator.writeString(desensitionEnum.getDesensitizer().apply((String) value)); } @Override public JsonSerializer<?> createContextual(SerializerProvider serializerProvider, BeanProperty beanProperty) throws JsonMappingException { if (beanProperty != null) { // 非 String 直接跳過(guò) if (Objects.equals(beanProperty.getType().getRawClass(), String.class)) { // 獲取注解信息 Desensitization annotation = beanProperty.getAnnotation(Desensitization.class); if (annotation == null) { annotation = beanProperty.getContextAnnotation(Desensitization.class); } if (annotation != null) { // 獲得注解上的值并賦值 this.desensitionEnum = annotation.desensitionEnum(); return this; } } return serializerProvider.findValueSerializer(beanProperty.getType(), beanProperty); } return serializerProvider.findNullValueSerializer(null); } }
執(zhí)行結(jié)果
package com.demo.desensitization; import lombok.Data; import java.io.Serializable; @Data public class UserDTO implements Serializable { @Desensitization(desensitionEnum=DesensitionEnum.ID_CARD) private String idCard; @Desensitization(desensitionEnum=DesensitionEnum.USERNAME) private String username; @Desensitization(desensitionEnum=DesensitionEnum.PHONE) private String phone; @Desensitization(desensitionEnum=DesensitionEnum.ADDRESS) private String address; } public static void testFast(){ FastJsonConfig fastJsonConfig = new FastJsonConfig(); fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat, SerializerFeature.DisableCircularReferenceDetect); fastJsonConfig.setSerializeFilters(new FastjsonDesensitizeFilter()); UserDTO userDTO=new UserDTO(); userDTO.setUsername("張三"); userDTO.setPhone("15669057552"); userDTO.setIdCard("370826198901133299"); userDTO.setAddress("浙江省杭州市江干區(qū)火車東站"); String s = JSON.toJSONString(userDTO,new FastjsonDesensitizeFilter()); System.out.println(s); } public static void testJackson() throws JsonProcessingException { UserDTO userDTO=new UserDTO(); userDTO.setUsername("張三"); userDTO.setPhone("15669057552"); userDTO.setIdCard("370826198901133299"); userDTO.setAddress("浙江省杭州市江干區(qū)火車東站"); ObjectMapper objectMapper = new ObjectMapper(); String value = objectMapper.writeValueAsString(userDTO); System.out.println(value); }
最終輸出結(jié)果
{"idCard":"3708****3299","username":"張*","phone":"156****7552","address":"浙江省杭州市江干區(qū)火車東站"}
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