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update 优化灵活脱敏方法
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@@ -34,21 +34,13 @@ public class DesensitizedUtils extends DesensitizedUtil {
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return StrUtil.repeat('*', len);
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}
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// 可用长度 = 总长度 - 前后可见长度
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int available = len - prefixVisible - suffixVisible;
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// 中间掩码长度不能超过可用长度
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int actualMaskLength = Math.min(maskLength, available);
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// 剩余字符尽量显示在中间掩码旁
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int remaining = available - actualMaskLength;
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String middleChars = remaining > 0 ? value.substring(prefixVisible, prefixVisible + remaining) : "";
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String middleMask = StrUtil.repeat('*', actualMaskLength);
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String prefix = value.substring(0, prefixVisible);
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String suffix = value.substring(len - suffixVisible);
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return prefix + middleChars + middleMask + suffix;
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// 中间可用于脱敏的最大长度
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int middleLen = len - prefixVisible - suffixVisible;
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// 实际掩码长度 至少脱敏 1 位
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int actualMaskLen = Math.max(1, Math.min(maskLength, middleLen));
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return prefix + StrUtil.repeat('*', actualMaskLen) + suffix;
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}
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}
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