content: package com.ruoyi.common.config.serializer;
  
  import java.io.IOException;
  import java.util.Objects;
  import com.fasterxml.jackson.core.JsonGenerator;
  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 com.ruoyi.common.annotation.Sensitive;
  import com.ruoyi.common.core.domain.entity.SysUser;
  import com.ruoyi.common.enums.DesensitizedType;
  import com.ruoyi.common.utils.ShiroUtils;
  
  /**
   * 数据脱敏序列化过滤
   *
   * @author ruoyi
   */
  public class SensitiveJsonSerializer extends JsonSerializer<String> implements ContextualSerializer
  {
      private DesensitizedType desensitizedType;
  
      @Override
      public void serialize(String value, JsonGenerator gen, SerializerProvider serializers) throws IOException
      {
          if (desensitization())
          {
              gen.writeString(desensitizedType.desensitizer().apply(value));
          }
          else
          {
              gen.writeString(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.desensitizedType = annotation.desensitizedType();
              return this;
          }
          return prov.findValueSerializer(property.getType(), property);
      }
  
      /**
       * 是否需要脱敏处理
       */
      private boolean desensitization()
      {
          SysUser securityUser = ShiroUtils.getSysUser();
          if (securityUser == null)
          {
              return true;
          }
          // 管理员不脱敏
          return !securityUser.isAdmin();
      }
  }
  