title: ep_自定义注解实现加解密及脱敏
date: 2020-04-28 09:44
定义自定义注解
@Documented
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Order(Ordered.HIGHEST_PRECEDENCE)
public @interface PrivateData {}
@Documented
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Order(Ordered.HIGHEST_PRECEDENCE)
public @interface PrivateDataMethod {}
首先定义两个自定义注解,privateData
和 privateDataMethod
,别离将 @Target 属性定义为FIELD 和METHOD。
结构 AOP 逻辑
-
申明一个切入点
@Pointcut("@annotation(com.max.base.services.annotation.PrivateDataMethod)") public void annotationPointCut() {}
对所有增加
@privateDataMethod
注解的办法进行切入。 -
申明告诉
@Around("annotationPointCut()") public Object around(ProceedingJoinPoint joinPoint) { Object responseObj = null; try {Object[] request = joinPoint.getArgs(); for (Object object : request) {if (object instanceof Collection) {Collection collection = (Collection) object; collection.forEach(var -> { try {handleEncrypt(var); } catch (IllegalAccessException e) {e.printStackTrace(); } }); } else {handleEncrypt(object); } } responseObj = joinPoint.proceed(); if (responseObj instanceof Collection) {Collection collection = (Collection) responseObj; collection.forEach(var -> { try {handleDecrypt(var); } catch (IllegalAccessException e) {e.printStackTrace(); } }); } else {handleDecrypt(responseObj); } } catch (Throwable throwable) {throwable.printStackTrace(); log.error("SecureFieldAop 异样{}", throwable); } return responseObj; }
申明 Aroud 告诉,对于办法输入输出的对象进行判断,如果是非汇合对象则间接进行加解密操作,否则则拆分汇合,逐个操作
- 解决加解密
/**
* 解决加密
* @param requestObj
*/
private void handleEncrypt(Object requestObj) throws IllegalAccessException {if (Objects.isNull(requestObj)) {return;}
Field[] fields = requestObj.getClass().getDeclaredFields();
for (Field field : fields) {boolean hasSecureField = field.isAnnotationPresent(PrivateData.class);
if (hasSecureField) {Boolean accessible = field.isAccessible();
if (!accessible) {field.setAccessible(true);
}
String plaintextValue = (String) field.get(requestObj);
String encryptValue = AseUtil.encrypt(plaintextValue, secretKey);
field.set(requestObj, encryptValue);
if (!accessible) {field.setAccessible(false);
}
}
}
}
通过反射获取对象的 Field 列表,对于领有 @PrivateData
注解的字段执行 encryptValue() 办法并用加密后的字符串笼罩原字段。
解密逻辑与加密相似,不做赘述。
测试
-
标识
insert()
办法为须要加密的办法public interface CmTenantMapper {int deleteByPrimaryKey(Long id); @PrivateDataMethod int insert(CmTenant record); int insertSelective(CmTenant record); CmTenant selectByPrimaryKey(Long id); int updateByPrimaryKeySelective(CmTenant record); int updateByPrimaryKey(CmTenant record); }
-
对传入对象中须要加密的字段增加注解
public class CmTenant { private Long id; private String tenantId; @PrivateData private String tenantName; private String createBy; private Date createDate; private String updateBy; private Date updateDate; private String remarks; private Byte delFlag; //set get...
-
调用 insert 办法查看数据保留后果
传入对象{ "createBy": "可乐可不乐", "delFlag": "NOTDELETE", "remarks": "测试加密", "tenantId": "996", "tenantName": "椅子团队出品", "updateBy": "可乐可不乐" }
数据库保留对象
- 解密测试不做正文,大家自行尝试
脱敏逻辑
脱敏逻辑与加解密基本一致,须要留神的一点是脱敏的注解须要增加 type
类型
@Documented
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Order(Ordered.HIGHEST_PRECEDENCE)
public @interface MaskingField {MaskingTypeEnum type();
}
在 MaskingTypeEnum
中定义脱敏的分类
public enum MaskingTypeEnum {
/* 身份证号码 */
ID_CARD,
/* 手机号码 */
PHONE,
/* 地址 */
ADDRESS,
/* 姓名 */
NAME
}
在应用是 MaskingTypeEnum
时标识字段的类型
@MaskingField(type = MaskingTypeEnum.NAME)
private String cpName;
后续 ~~bug~~
性能大家自行钻研,peace~
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