[feature] add mobile encryption

src/main/java/com/tosan/tools/tostring/JsonToStringBuilderImpl.java

@@ -123,6 +123,12 @@ public final ToStringBuilder rightEncryptedAppend(String key, Object obj) {
         return this;
     }
 
+    @Override
+    public ToStringBuilder mobileEncryptedAppend(String key, Object obj) {
+        this.text.put(key, EncryptStringUtil.mobileEncrypt(obj));
+        return this;
+    }
+
     @Override
     public final ToStringBuilder encryptedAppend(String key, Object obj) {
         this.text.put(key, EncryptStringUtil.encrypt(obj));

src/main/java/com/tosan/tools/tostring/SimpleToStringBuilderImpl.java

@@ -206,6 +206,21 @@ public ToStringBuilder panEncryptedAppend(String key, Object obj) {
         return this;
     }
 
+    @Override
+    public ToStringBuilder mobileEncryptedAppend(String key, Object obj) {
+        this.text.append(SPACE);
+        this.text.append(key);
+        this.text.append(EQUAL);
+        if (obj != null) {
+            this.text.append(EncryptStringUtil.mobileEncrypt(obj));
+            this.text.append(ENTER);
+        } else {
+            this.text.append(NULL_TEXT);
+        }
+        this.text.append(ENTER);
+        return this;
+    }
+
     @Override
     public ToStringBuilder semiEncryptedAppend(String key, Object obj) {
         return semiEncryptedAppend(key, obj, 5);

src/main/java/com/tosan/tools/tostring/ToStringBuilder.java

@@ -25,6 +25,11 @@ public interface ToStringBuilder {
      */
     ToStringBuilder rightEncryptedAppend(String name, Object value);
 
+    /**
+     * calling this method leads to showing mobile number and only shows begin and end of mobile number value
+     */
+    ToStringBuilder mobileEncryptedAppend(String name,Object value);
+
     /**
      * this method will remove value
      * use this for fields such as account balance and password

src/main/java/com/tosan/tools/tostring/ToStringBuilderImpl.java

@@ -59,6 +59,11 @@ public ToStringBuilder rightEncryptedAppend(String key, Object obj) {
         return builder.rightEncryptedAppend(key, obj);
     }
 
+    @Override
+    public ToStringBuilder mobileEncryptedAppend(String key, Object obj) {
+        return builder.mobileEncryptedAppend(key, obj);
+    }
+
     @Override
     public ToStringBuilder encryptedAppend(String key, Object obj) {
         return builder.encryptedAppend(key, obj);

src/main/java/com/tosan/tools/util/EncryptStringUtil.java

@@ -115,6 +115,24 @@ public static String panEncrypt(Object obj) {
         return str;
     }
 
+    public static String mobileEncrypt(Object obj) {
+        String str;
+        try {
+            str = objToString(obj);
+            if (str == null || str.isEmpty()) {
+                return str;
+            } else if (str.length() < 7) {
+                return ENCRYPTED;
+            } else {
+                return str.substring(0, str.length() - 7) + "***" +
+                        str.substring(str.length() - 4);
+            }
+        } catch (Exception e) {
+            str = ERROR_TEXT;
+        }
+        return str;
+    }
+
     public static String middleEncrypt(Object obj) {
         String str;
         try {