新增数据脱敏过滤注解

ruoyi-common/src/main/java/com/ruoyi/common/annotation/Sensitive.java

+package com.ruoyi.common.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import com.fasterxml.jackson.annotation.JacksonAnnotationsInside;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import com.ruoyi.common.config.serializer.SensitiveJsonSerializer;
+import com.ruoyi.common.enums.DesensitizedType;
+
+/**
+ * 数据脱敏注解
+ *
+ * @author ruoyi
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+@JacksonAnnotationsInside
+@JsonSerialize(using = SensitiveJsonSerializer.class)
+public @interface Sensitive
+{
+    DesensitizedType desensitizedType();
+}

ruoyi-common/src/main/java/com/ruoyi/common/config/serializer/SensitiveJsonSerializer.java

+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.model.LoginUser;
+import com.ruoyi.common.enums.DesensitizedType;
+import com.ruoyi.common.utils.SecurityUtils;
+
+/**
+ * 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()
+    {
+        try
+        {
+            LoginUser securityUser = SecurityUtils.getLoginUser();
+            // 管理员不脱敏
+            return !securityUser.getUser().isAdmin();
+        }
+        catch (Exception e)
+        {
+            return true;
+        }
+    }
+}

ruoyi-common/src/main/java/com/ruoyi/common/enums/DesensitizedType.java

+package com.ruoyi.common.enums;
+
+import java.util.function.Function;
+import com.ruoyi.common.utils.DesensitizedUtil;
+
+/**
+ * 脱敏类型
+ *
+ * @author ruoyi
+ */
+public enum DesensitizedType
+{
+    /**
+     * 姓名，第2位星号替换
+     */
+    USERNAME(s -> s.replaceAll("(\\S)\\S(\\S*)", "$1*$2")),
+
+    /**
+     * 密码，全部字符都用*代替
+     */
+    PASSWORD(DesensitizedUtil::password),
+
+    /**
+     * 身份证，中间10位星号替换
+     */
+    ID_CARD(s -> s.replaceAll("(\\d{4})\\d{10}(\\d{4})", "$1** **** ****$2")),
+
+    /**
+     * 手机号，中间4位星号替换
+     */
+    PHONE(s -> s.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2")),
+
+    /**
+     * 电子邮箱，仅显示第一个字母和@后面的地址显示，其他星号替换
+     */
+    EMAIL(s -> s.replaceAll("(^.)[^@]*(@.*$)", "$1****$2")),
+
+    /**
+     * 银行卡号，保留最后4位，其他星号替换
+     */
+    BANK_CARD(s -> s.replaceAll("\\d{15}(\\d{3})", "**** **** **** **** $1")),
+
+    /**
+     * 车牌号码，包含普通车辆、新能源车辆
+     */
+    CAR_LICENSE(DesensitizedUtil::carLicense);
+
+    private final Function<String, String> desensitizer;
+
+    DesensitizedType(Function<String, String> desensitizer)
+    {
+        this.desensitizer = desensitizer;
+    }
+
+    public Function<String, String> desensitizer()
+    {
+        return desensitizer;
+    }
+}

ruoyi-common/src/main/java/com/ruoyi/common/utils/DesensitizedUtil.java

+package com.ruoyi.common.utils;
+
+/**
+ * 脱敏工具类
+ *
+ * @author ruoyi
+ */
+public class DesensitizedUtil
+{
+    /**
+     * 密码的全部字符都用*代替，比如：******
+     *
+     * @param password 密码
+     * @return 脱敏后的密码
+     */
+    public static String password(String password)
+    {
+        if (StringUtils.isBlank(password))
+        {
+            return StringUtils.EMPTY;
+        }
+        return StringUtils.repeat('*', password.length());
+    }
+
+    /**
+     * 车牌中间用*代替，如果是错误的车牌，不处理
+     *
+     * @param carLicense 完整的车牌号
+     * @return 脱敏后的车牌
+     */
+    public static String carLicense(String carLicense)
+    {
+        if (StringUtils.isBlank(carLicense))
+        {
+            return StringUtils.EMPTY;
+        }
+        // 普通车牌
+        if (carLicense.length() == 7)
+        {
+            carLicense = StringUtils.hide(carLicense, 3, 6);
+        }
+        else if (carLicense.length() == 8)
+        {
+            // 新能源车牌
+            carLicense = StringUtils.hide(carLicense, 3, 7);
+        }
+        return carLicense;
+    }
+}

ruoyi-common/src/main/java/com/ruoyi/common/utils/StringUtils.java

@@ -23,6 +23,9 @@ public class StringUtils extends org.apache.commons.lang3.StringUtils
     /** 下划线 */
     private static final char SEPARATOR = '_';
 
+    /** 星号 */
+    private static final char ASTERISK = '*';
+
     /**
      * 获取参数不为空值
      * 
@@ -163,6 +166,49 @@ public class StringUtils extends org.apache.commons.lang3.StringUtils
         return (str == null ? "" : str.trim());
     }
 
+    /**
+     * 替换指定字符串的指定区间内字符为"*"
+     *
+     * @param str 字符串
+     * @param startInclude 开始位置（包含）
+     * @param endExclude 结束位置（不包含）
+     * @return 替换后的字符串
+     */
+    public static String hide(CharSequence str, int startInclude, int endExclude)
+    {
+        if (isEmpty(str))
+        {
+            return NULLSTR;
+        }
+        final int strLength = str.length();
+        if (startInclude > strLength)
+        {
+            return NULLSTR;
+        }
+        if (endExclude > strLength)
+        {
+            endExclude = strLength;
+        }
+        if (startInclude > endExclude)
+        {
+            // 如果起始位置大于结束位置，不替换
+            return NULLSTR;
+        }
+        final char[] chars = new char[strLength];
+        for (int i = 0; i < strLength; i++)
+        {
+            if (i >= startInclude && i < endExclude)
+            {
+                chars[i] = ASTERISK;
+            }
+            else
+            {
+                chars[i] = str.charAt(i);
+            }
+        }
+        return new String(chars);
+    }
+
     /**
      * 截取字符串
      *