DesensitizedUtil增加清空策略

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 ### 🐣新特性
 * 【core  】      NumberUtil.nullToZero增加重载（issue#I7PPD2@Github）
+* 【core  】      DesensitizedUtil增加清空策略（issue#I7PUJ2@Github）
 
 ### 🐞Bug修复
 

hutool-core/src/main/java/cn/hutool/core/util/DesensitizedUtil.java

@@ -78,7 +78,15 @@ public class DesensitizedUtil {
 		/**
 		 * 定义了一个first_mask的规则，只显示第一个字符。
 		 */
-		FIRST_MASK
+		FIRST_MASK,
+		/**
+		 * 清空为null
+		 */
+		CLEAR_TO_NULL,
+		/**
+		 * 清空为""
+		 */
+		CLEAR_TO_EMPTY
 	}
 
 	/**
@@ -148,11 +156,37 @@ public class DesensitizedUtil {
 			case FIRST_MASK:
 				newStr = firstMask(String.valueOf(str));
 				break;
+			case CLEAR_TO_EMPTY:
+				newStr = clear();
+				break;
+			case CLEAR_TO_NULL:
+				newStr = clearToNull();
+				break;
 			default:
 		}
 		return newStr;
 	}
 
+	/**
+	 * 清空为空字符串
+	 *
+	 * @return 清空后的值
+	 * @since 5.8.22
+	 */
+	public static String clear() {
+		return StrUtil.EMPTY;
+	}
+
+	/**
+	 * 清空为{@code null}
+	 *
+	 * @return 清空后的值(null)
+	 * @since 5.8.22
+	 */
+	public static String clearToNull() {
+		return null;
+	}
+
 	/**
 	 * 【用户id】不对外提供userId
 	 *
@@ -329,7 +363,7 @@ public class DesensitizedUtil {
 		}
 
 		final int length = bankCardNo.length();
-		final int endLength= length % 4 == 0 ? 4 : length % 4;
+		final int endLength = length % 4 == 0 ? 4 : length % 4;
 		final int midLength = length - 4 - endLength;
 
 		final StringBuilder buf = new StringBuilder();

hutool-core/src/test/java/cn/hutool/core/util/DesensitizedUtilTest.java

@@ -14,6 +14,8 @@ public class DesensitizedUtilTest {
 	@Test
 	public void desensitizedTest() {
 		Assert.assertEquals("0", DesensitizedUtil.desensitized("100", DesensitizedUtil.DesensitizedType.USER_ID));
+		Assert.assertEquals("", DesensitizedUtil.desensitized("100", DesensitizedUtil.DesensitizedType.CLEAR_TO_EMPTY));
+		Assert.assertNull(DesensitizedUtil.desensitized("100", DesensitizedUtil.DesensitizedType.CLEAR_TO_NULL));
 		Assert.assertEquals("段**", DesensitizedUtil.desensitized("段正淳", DesensitizedUtil.DesensitizedType.CHINESE_NAME));
 		Assert.assertEquals("5***************1X", DesensitizedUtil.desensitized("51343620000320711X", DesensitizedUtil.DesensitizedType.ID_CARD));
 		Assert.assertEquals("0915*****79", DesensitizedUtil.desensitized("09157518479", DesensitizedUtil.DesensitizedType.FIXED_PHONE));