add privacy for email

src/main/java/com/dl/officialsite/common/privacy/PrivacyEncrypt.java

@@ -0,0 +1,36 @@
+package com.dl.officialsite.common.privacy;
+
+import com.fasterxml.jackson.annotation.JacksonAnnotationsInside;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target(ElementType.FIELD) // 作用在字段上
+@Retention(RetentionPolicy.RUNTIME) // class文件中保留，运行时也保留，能通过反射读取到
+@JacksonAnnotationsInside // 表示自定义自己的注解PrivacyEncrypt
+@JsonSerialize(using = PrivacySerializer.class) // 该注解使用序列化的方式
+public @interface PrivacyEncrypt {
+
+    /**
+     * 脱敏数据类型（没给默认值，所以使用时必须指定type）
+     */
+    PrivacyTypeEnum type();
+
+    /**
+     * 前置不需要打码的长度
+     */
+    int prefixNoMaskLen() default 1;
+
+    /**
+     * 后置不需要打码的长度
+     */
+    int suffixNoMaskLen() default 1;
+
+    /**
+     * 用什么打码
+     */
+    String symbol() default "*";
+}

src/main/java/com/dl/officialsite/common/privacy/PrivacySerializer.java

@@ -0,0 +1,64 @@
+package com.dl.officialsite.common.privacy;
+
+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 lombok.AllArgsConstructor;
+import lombok.NoArgsConstructor;
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.IOException;
+import java.util.Objects;
+
+@NoArgsConstructor
+@AllArgsConstructor
+public class PrivacySerializer extends JsonSerializer<String> implements ContextualSerializer {
+
+    // 脱敏类型
+    private PrivacyTypeEnum privacyTypeEnum;
+    // 前几位不脱敏
+    private Integer prefixNoMaskLen;
+    // 最后几位不脱敏
+    private Integer suffixNoMaskLen;
+    // 用什么打码
+    private String symbol;
+
+    @Override
+    public void serialize(final String origin, final JsonGenerator jsonGenerator,
+                          final SerializerProvider serializerProvider) throws IOException {
+        if (StringUtils.isNotBlank(origin) && null != privacyTypeEnum) {
+            switch (privacyTypeEnum) {
+                case CUSTOMER:
+                    jsonGenerator.writeString(PrivacyUtil.desValue(origin, prefixNoMaskLen, suffixNoMaskLen, symbol));
+                    break;
+                case EMAIL:
+                    jsonGenerator.writeString(PrivacyUtil.hideEmail(origin));
+                    break;
+                default:
+                    throw new IllegalArgumentException("unknown privacy type enum " + privacyTypeEnum);
+            }
+        }
+    }
+
+    @Override
+    public JsonSerializer<?> createContextual(final SerializerProvider serializerProvider,
+                                              final BeanProperty beanProperty) throws JsonMappingException {
+        if (beanProperty != null) {
+            if (Objects.equals(beanProperty.getType().getRawClass(), String.class)) {
+                PrivacyEncrypt privacyEncrypt = beanProperty.getAnnotation(PrivacyEncrypt.class);
+                if (privacyEncrypt == null) {
+                    privacyEncrypt = beanProperty.getContextAnnotation(PrivacyEncrypt.class);
+                }
+                if (privacyEncrypt != null) {
+                    return new PrivacySerializer(privacyEncrypt.type(), privacyEncrypt.prefixNoMaskLen(),
+                            privacyEncrypt.suffixNoMaskLen(), privacyEncrypt.symbol());
+                }
+            }
+            return serializerProvider.findValueSerializer(beanProperty.getType(), beanProperty);
+        }
+        return serializerProvider.findNullValueSerializer(null);
+    }
+}

src/main/java/com/dl/officialsite/common/privacy/PrivacyTypeEnum.java

@@ -0,0 +1,15 @@
+package com.dl.officialsite.common.privacy;
+
+
+import lombok.Getter;
+
+@Getter
+public enum PrivacyTypeEnum {
+
+    /** 自定义（此项需设置脱敏的范围）,也可以设置脱敏使用的字符*/
+    CUSTOMER,
+
+
+    /** 邮箱 */
+    EMAIL,
+}

src/main/java/com/dl/officialsite/common/privacy/PrivacyUtil.java

@@ -0,0 +1,77 @@
+package com.dl.officialsite.common.privacy;
+
+public class PrivacyUtil {
+
+    /**
+     * 隐藏手机号中间四位
+     */
+    public static String hidePhone(String phone) {
+        return phone.replaceAll("(\\d{3})\\d{4}(\\d{4})", "$1****$2");
+    }
+
+    /**
+     * 隐藏邮箱
+     */
+    public static String hideEmail(String email) {
+        return email.replaceAll("(\\w?)(\\w+)(\\w)(@\\w+\\.[a-z]+(\\.[a-z]+)?)", "$1****$3$4");
+    }
+
+    /**
+     * 隐藏身份证
+     */
+    public static String hideIDCard(String idCard) {
+        return idCard.replaceAll("(\\d{4})\\d{10}(\\w{4})", "$1*****$2");
+    }
+
+    /**
+     * 【中文姓名】只显示第一个汉字，其他隐藏为星号，比如：任**
+     */
+    public static String hideChineseName(String chineseName) {
+        if (chineseName == null) {
+            return null;
+        }
+        return desValue(chineseName, 1, 0, "*");
+    }
+
+//    /**
+//     * 【身份证号】显示前4位, 后2位
+//     */
+//    public static String hideIdCard(String idCard) {
+//        return desValue(idCard, 4, 2, "*");
+//    }
+
+//    /**
+//     * 【手机号码】前三位，后四位，其他隐藏。
+//     */
+//    public static String hidePhone(String phone) {
+//        return desValue(phone, 3, 4, "*");
+//    }
+
+    /**
+     * 对字符串进行脱敏操作
+     * @param origin          原始字符串
+     * @param prefixNoMaskLen 左侧需要保留几位明文字段
+     * @param suffixNoMaskLen 右侧需要保留几位明文字段
+     * @param maskStr         用于遮罩的字符串, 如'*'
+     * @return 脱敏后结果
+     */
+    public static String desValue(String origin, int prefixNoMaskLen, int suffixNoMaskLen, String maskStr) {
+        if (origin == null) {
+            return null;
+        }
+        StringBuilder sb = new StringBuilder();
+        for (int i = 0, n = origin.length(); i < n; i++) {
+            if (i < prefixNoMaskLen) {
+                sb.append(origin.charAt(i));
+                continue;
+            }
+            if (i > (n - suffixNoMaskLen - 1)) {
+                sb.append(origin.charAt(i));
+                continue;
+            }
+            sb.append(maskStr);
+        }
+        return sb.toString();
+    }
+
+}

src/main/java/com/dl/officialsite/member/Member.java

@@ -1,6 +1,8 @@
 package com.dl.officialsite.member;
 
 
+import com.dl.officialsite.common.privacy.PrivacyEncrypt;
+import com.dl.officialsite.common.privacy.PrivacyTypeEnum;
 import com.fasterxml.jackson.annotation.JsonIgnore;
 import lombok.*;
 import org.hibernate.annotations.DynamicUpdate;
@@ -36,6 +38,7 @@ public class Member  implements Serializable
     private String  address;
     @Column(unique=true,length = 40)
     @NotNull
+    @PrivacyEncrypt(type = PrivacyTypeEnum.EMAIL)
     private String email;
     @Column(unique=true,length = 20)
     @NotNull