fix PinyinComparator

hutool-core/src/main/java/org/dromara/hutool/core/comparator/LocaleComparator.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2023. looly(loolly@aliyun.com)
+ * Hutool is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *          https://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+
+package org.dromara.hutool.core.comparator;
+
+import java.text.Collator;
+import java.util.Locale;
+
+/**
+ * 自定义语言环境 String 比较，可为自然语言文本构建搜索和排序例程。
+ *
+ * @author looly
+ */
+public class LocaleComparator extends NullComparator<String> {
+	private static final long serialVersionUID = 1L;
+
+	/**
+	 * 构造
+	 *
+	 * @param nullGreater   是否{@code null}在后
+	 * @param desiredLocale 语言环境
+	 */
+	public LocaleComparator(final boolean nullGreater, final Locale desiredLocale) {
+		super(nullGreater, Collator.getInstance(desiredLocale));
+	}
+}

hutool-core/src/main/java/org/dromara/hutool/core/comparator/PinyinComparator.java

@@ -12,9 +12,6 @@
 
 package org.dromara.hutool.core.comparator;
 
-import java.io.Serializable;
-import java.text.Collator;
-import java.util.Comparator;
 import java.util.Locale;
 
 /**
@@ -23,21 +20,22 @@ import java.util.Locale;
  * @author looly
  * @since 4.0.8
  */
-public class PinyinComparator implements Comparator<String>, Serializable {
+public class PinyinComparator extends LocaleComparator {
 	private static final long serialVersionUID = 1L;
 
-	final Collator collator;
+	/**
+	 * 构造，{@code null}最大，排在最后
+	 */
+	public PinyinComparator() {
+		this(true);
+	}
 
 	/**
 	 * 构造
+	 *
+	 * @param nullGreater 是否{@code null}最大，排在最后
 	 */
-	public PinyinComparator() {
+	public PinyinComparator(final boolean nullGreater) {
-		collator = Collator.getInstance(Locale.CHINESE);
+		super(nullGreater, Locale.CHINESE);
 	}
-
-	@Override
-	public int compare(final String o1, final String o2) {
-		return collator.compare(o1, o2);
-	}
-
 }