add DefaultCloneable

CHANGELOG.md

@@ -16,6 +16,7 @@
 * 【core   】     IdCardUtil.isValidCard不再自动trim（issue#I4I04O@Gitee）
 * 【core   】     改进TextFinder，支持限制结束位置及反向查找模式
 * 【core   】     Opt增加部分方法（pr#459@Gitee）
+* 【core   】     增加DefaultCloneable（pr#459@Gitee）
 * 
 ### 🐞Bug修复
 * 【core   】     修复FileResource构造fileName参数无效问题（issue#1942@Github）

hutool-core/src/main/java/cn/hutool/core/clone/DefaultClone.java

@@ -1,29 +0,0 @@
-package cn.hutool.core.clone;
-
-
-import java.lang.reflect.Method;
-
-public interface DefaultClone extends java.lang.Cloneable {
-
-	/**
-	 * 浅拷贝
-	 * 功能与 {@link CloneSupport#clone()} 类似, 是一种接口版的实现
-	 * 一个类，一般只能继承一个类,但是可以实现多个接口,所以该接口会有一定程度的灵活性
-	 *
-	 * @param <T> T
-	 * @return obj
-	 */
-	@SuppressWarnings({"unchecked"})
-	default <T> T clone0() {
-		try {
-			final Class<Object> objectClass = Object.class;
-			final Method clone = objectClass.getDeclaredMethod("clone");
-			clone.setAccessible(true);
-			return (T) clone.invoke(this);
-		} catch (Exception e) {
-			throw new CloneRuntimeException(e);
-		}
-	}
-}
-
-

hutool-core/src/main/java/cn/hutool/core/clone/DefaultCloneable.java

@@ -0,0 +1,28 @@
+package cn.hutool.core.clone;
+
+
+import cn.hutool.core.util.ReflectUtil;
+
+/**
+ * 克隆默认实现接口，用于实现返回指定泛型类型的克隆方法
+ *
+ * @param <T> 泛型类型
+ * @since 5.7.17
+ */
+public interface DefaultCloneable<T> extends java.lang.Cloneable {
+
+	/**
+	 * 浅拷贝，提供默认的泛型返回值的clone方法。
+	 *
+	 * @return obj
+	 */
+	default T clone0() {
+		try {
+			return ReflectUtil.invoke(this, "clone");
+		} catch (Exception e) {
+			throw new CloneRuntimeException(e);
+		}
+	}
+}
+
+

hutool-core/src/test/java/cn/hutool/core/clone/DefaultCloneTest.java

@@ -1,6 +1,8 @@
 package cn.hutool.core.clone;
 
 
+import lombok.AllArgsConstructor;
+import lombok.Data;
 import org.junit.Assert;
 import org.junit.Test;
 
@@ -17,70 +19,29 @@ public class DefaultCloneTest {
 		oldCar.setWheelList(Stream.of(new Wheel("h")).collect(Collectors.toList()));
 
 		Car newCar = oldCar.clone0();
-		Assert.assertEquals(oldCar.getId(),newCar.getId());
-		Assert.assertEquals(oldCar.getWheelList(),newCar.getWheelList());
+		Assert.assertEquals(oldCar.getId(), newCar.getId());
+		Assert.assertEquals(oldCar.getWheelList(), newCar.getWheelList());
 
 		newCar.setId(2);
-		Assert.assertNotEquals(oldCar.getId(),newCar.getId());
+		Assert.assertNotEquals(oldCar.getId(), newCar.getId());
 		newCar.getWheelList().add(new Wheel("s"));
 
 		Assert.assertNotSame(oldCar, newCar);
 
 	}
 
-}
-
-class Car implements DefaultClone {
-	private Integer id;
-	private List<Wheel> wheelList;
-
-	public Integer getId() {
-		return id;
+	@Data
+	static class Car implements DefaultCloneable<Car> {
+		private Integer id;
+		private List<Wheel> wheelList;
 	}
 
-	public void setId(Integer id) {
-		this.id = id;
+	@Data
+	@AllArgsConstructor
+	static class Wheel {
+		private String direction;
 	}
 
-	public List<Wheel> getWheelList() {
-		return wheelList;
-	}
-
-	public void setWheelList(List<Wheel> wheelList) {
-		this.wheelList = wheelList;
-	}
-
-	@Override
-	public String toString() {
-		return "Car{" +
-				"id=" + id +
-				", wheelList=" + wheelList +
-				'}';
-	}
-}
-
-
-class Wheel {
-	private String direction;
-
-	public Wheel(String direction) {
-		this.direction = direction;
-	}
-
-	public String getDirection() {
-		return direction;
-	}
-
-	public void setDirection(String direction) {
-		this.direction = direction;
-	}
-
-	@Override
-	public String toString() {
-		return "Wheel{" +
-				"direction='" + direction + '\'' +
-				'}';
-	}
 }