From 7393f66d0641676aa7951e3bdeb0ea2453a602bd Mon Sep 17 00:00:00 2001
From: Looly <loolly@aliyun.com>
Date: Wed, 26 Nov 2025 17:35:20 +0800
Subject: [PATCH] =?UTF-8?q?=E6=8F=90=E4=BE=9B=20core=20=E6=A8=A1=E5=9D=97?=
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---
 .../hutool/v7/core/text/bloom/FuncFilter.java | 27 ++++++++++---------
 .../text/bloom/BitMapBloomFilterTest.java     |  8 +++---
 2 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/hutool-core/src/main/java/cn/hutool/v7/core/text/bloom/FuncFilter.java b/hutool-core/src/main/java/cn/hutool/v7/core/text/bloom/FuncFilter.java
index f764468387..5eb936cb18 100644
--- a/hutool-core/src/main/java/cn/hutool/v7/core/text/bloom/FuncFilter.java
+++ b/hutool-core/src/main/java/cn/hutool/v7/core/text/bloom/FuncFilter.java
@@ -22,7 +22,7 @@ import java.io.Serial;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
-import java.util.function.Function;
+import java.util.function.ToIntFunction;
 
 /**
  * 基于Hash函数方法的{@link BloomFilter}
@@ -37,31 +37,31 @@ public class FuncFilter extends AbstractFilter {
 	/**
 	 * 创建FuncFilter
 	 *
-	 * @param size     最大值
+	 * @param size      最大值
 	 * @param hashFuncs Hash函数
 	 * @return FuncFilter
 	 */
 	@SafeVarargs
-	public static FuncFilter of(final int size, final Function<String, Number>... hashFuncs) {
+	public static FuncFilter of(final int size, final ToIntFunction<String>... hashFuncs) {
 		return new FuncFilter(size, hashFuncs);
 	}
 
 	// 允许接收多个哈希函数
-	private final List<Function<String, Number>> hashFuncs;
+	private final List<ToIntFunction<String>> hashFuncs;
 
 	/**
-	 * @param size     最大值
+	 * @param size      最大值
 	 * @param hashFuncs Hash函数
 	 */
 	@SafeVarargs
-	public FuncFilter(final int size, final Function<String, Number>... hashFuncs) {
+	public FuncFilter(final int size, final ToIntFunction<String>... hashFuncs) {
 		super(size);
 		Assert.notEmpty(hashFuncs, "Hash functions must not be empty");
 		this.hashFuncs = Collections.unmodifiableList(Arrays.asList(hashFuncs));
 	}
 
 	/**
-	 *兼容父类，如果存在多个哈希函数，就使用第一个
+	 * 兼容父类，如果存在多个哈希函数，就使用第一个
 	 *
 	 * @param str 字符串
 	 */
@@ -72,18 +72,18 @@ public class FuncFilter extends AbstractFilter {
 
 	/**
 	 *
-	 * @param str 字符串
+	 * @param str      字符串
 	 * @param hashFunc 哈希函数
 	 * @return HashCode 指定哈希函数的计算结果
 	 */
-	public int hash(final String str, final Function<String, Number> hashFunc) {
+	public int hash(final String str, final ToIntFunction<String> hashFunc) {
 		// 通过位运算获取正数
-		return (hashFunc.apply(str).intValue() & 0x7FFFFFFF) % size;
+		return (hashFunc.applyAsInt(str) & 0x7FFFFFFF) % size;
 	}
 
 	@Override
 	public boolean contains(final String str) {
-		for (final Function<String, Number> hashFunc : hashFuncs) {
+		for (final ToIntFunction<String> hashFunc : hashFuncs) {
 			if (!bitSet.get(hash(str, hashFunc))) {
 				return false;
 			}
@@ -94,8 +94,9 @@ public class FuncFilter extends AbstractFilter {
 	@Override
 	public boolean add(final String str) {
 		boolean add = false;
-		for (final Function<String, Number> hashFunc : hashFuncs) {
-			int hash = hash(str,  hashFunc);
+		int hash;
+		for (final ToIntFunction<String> hashFunc : hashFuncs) {
+			hash = hash(str, hashFunc);
 			if (!bitSet.get(hash)) {
 				bitSet.set(hash);
 				add = true;
diff --git a/hutool-core/src/test/java/cn/hutool/v7/core/text/bloom/BitMapBloomFilterTest.java b/hutool-core/src/test/java/cn/hutool/v7/core/text/bloom/BitMapBloomFilterTest.java
index a6851654f3..8988e0719f 100644
--- a/hutool-core/src/test/java/cn/hutool/v7/core/text/bloom/BitMapBloomFilterTest.java
+++ b/hutool-core/src/test/java/cn/hutool/v7/core/text/bloom/BitMapBloomFilterTest.java
@@ -65,7 +65,7 @@ public class BitMapBloomFilterTest {
 
 	@Test
 	public void combinedMultiHashTest() {
-		FuncFilter multiHashFuncFilter = FuncFilter.of(SIZE,
+		final FuncFilter multiHashFuncFilter = FuncFilter.of(SIZE,
 			HashUtil::bkdrHash,
 			HashUtil::apHash,
 			HashUtil::djbHash
@@ -84,9 +84,9 @@ public class BitMapBloomFilterTest {
 			HashUtil::djbHash
 		);
 
-		String s1 = "你好世界";
-		String s2 = "双亲委派";
-		String s3 = "测试工程师";
+		final String s1 = "你好世界";
+		final String s2 = "双亲委派";
+		final String s3 = "测试工程师";
 
 		filter.add(s1);
 		filter.add(s2);