diff --git a/hutool-core/src/main/java/cn/hutool/core/bean/BeanUtil.java b/hutool-core/src/main/java/cn/hutool/core/bean/BeanUtil.java
index ef9530366..0ab7401db 100755
--- a/hutool-core/src/main/java/cn/hutool/core/bean/BeanUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/bean/BeanUtil.java
@@ -573,14 +573,16 @@ public class BeanUtil {
 	 * @since 5.8.0
 	 */
 	public static Map<String, Object> beanToMap(final Object bean, final String... properties) {
+		int mapSize = 16;
 		Editor<String> keyEditor = null;
 		if(ArrayUtil.isNotEmpty(properties)){
+			mapSize = properties.length;
 			final Set<String> propertiesSet = SetUtil.of(properties);
 			keyEditor = property -> propertiesSet.contains(property) ? property : null;
 		}
 
 		// 指明了要复制的属性 所以不忽略null值
-		return beanToMap(bean, new LinkedHashMap<>(properties.length, 1), false, keyEditor);
+		return beanToMap(bean, new LinkedHashMap<>(mapSize, 1), false, keyEditor);
 	}
 
 	/**
diff --git a/hutool-core/src/main/java/cn/hutool/core/util/BooleanUtil.java b/hutool-core/src/main/java/cn/hutool/core/util/BooleanUtil.java
index de527870c..cf5e974b1 100644
--- a/hutool-core/src/main/java/cn/hutool/core/util/BooleanUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/util/BooleanUtil.java
@@ -16,6 +16,8 @@ public class BooleanUtil {
 
 	/** 表示为真的字符串 */
 	private static final Set<String> TRUE_SET = SetUtil.of("true", "yes", "y", "t", "ok", "1", "on", "是", "对", "真", "對", "√");
+	/** 表示为假的字符串 */
+	private static final Set<String> FALSE_SET = SetUtil.of("false", "no", "n", "f", "0", "off", "否", "错", "假", "錯", "×");
 
 	/**
 	 * 取相反值
@@ -86,6 +88,28 @@ public class BooleanUtil {
 		return false;
 	}
 
+	/**
+	 * 转换字符串为boolean值<br>
+	 * 如果为["true", "yes", "y", "t", "ok", "1", "on", "是", "对", "真", "對", "√"]，返回{@code true}<br>
+	 * 如果为["false", "no", "n", "f", "0", "off", "否", "错", "假", "錯", "×"]，返回{@code false}<br>
+	 * 其他情况返回{@code null}
+	 *
+	 * @param valueStr 字符串
+	 * @return boolean值
+	 * @since 5.8.1
+	 */
+	public static Boolean toBooleanObject(String valueStr) {
+		if (StrUtil.isNotBlank(valueStr)) {
+			valueStr = valueStr.trim().toLowerCase();
+			if(TRUE_SET.contains(valueStr)){
+				return true;
+			} else if(FALSE_SET.contains(valueStr)){
+				return false;
+			}
+		}
+		return null;
+	}
+
 	/**
 	 * boolean值转为int
 	 *
diff --git a/hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java
index 5814afd64..47ce77d05 100755
--- a/hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/bean/BeanUtilTest.java
@@ -191,6 +191,23 @@ public class BeanUtilTest {
 		Assert.assertFalse(map.containsKey("SUBNAME"));
 	}
 
+	@Test
+	public void beanToMapNullPropertiesTest() {
+		final SubPerson person = new SubPerson();
+		person.setAge(14);
+		person.setOpenid("11213232");
+		person.setName("测试A11");
+		person.setSubName("sub名字");
+
+		final Map<String, Object> map = BeanUtil.beanToMap(person, (String[])null);
+
+		Assert.assertEquals("测试A11", map.get("name"));
+		Assert.assertEquals(14, map.get("age"));
+		Assert.assertEquals("11213232", map.get("openid"));
+		// static属性应被忽略
+		Assert.assertFalse(map.containsKey("SUBNAME"));
+	}
+
 	@Test
 	public void beanToMapTest2() {
 		final SubPerson person = new SubPerson();