修复修复Convert不能转换Optional和Opt问题

hutool-core/src/main/java/cn/hutool/core/convert/ConverterRegistry.java

@@ -193,6 +193,20 @@ public class ConverterRegistry implements Serializable {
 			type = defaultValue.getClass();
 		}
 
+		// issue#I7WJHH，Opt和Optional处理
+		if (value instanceof Opt) {
+			value = ((Opt<T>) value).get();
+			if (ObjUtil.isNull(value)) {
+				return defaultValue;
+			}
+		}
+		if (value instanceof Optional) {
+			value = ((Optional<T>) value).orElse(null);
+			if (ObjUtil.isNull(value)) {
+				return defaultValue;
+			}
+		}
+
 		if (type instanceof TypeReference) {
 			type = ((TypeReference<?>) type).getType();
 		}

hutool-core/src/test/java/cn/hutool/core/convert/IssueI7WJHHTest.java

@@ -0,0 +1,38 @@
+/*
+ * 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:
+ *          http://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 cn.hutool.core.convert;
+
+import cn.hutool.core.lang.Opt;
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.Optional;
+
+public class IssueI7WJHHTest {
+
+	@Test
+	public void toIntTest() {
+		final Optional<Integer> optional = Optional.of(1);
+		final Integer integer = Convert.toInt(optional);
+
+		Assert.assertEquals(Integer.valueOf(1), integer);
+	}
+
+	@Test
+	public void toIntTest2() {
+		final Opt<Integer> optional = Opt.of(1);
+		final Integer integer = Convert.toInt(optional);
+
+		Assert.assertEquals(Integer.valueOf(1), integer);
+	}
+}