From 3894bc88c3ad92a4f9266f43cd2a55dcd188c045 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E5=85=B6=E6=B7=87?= <chen.qiqi@139.com>
Date: Tue, 16 Nov 2021 12:11:42 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0clone=E7=9A=84=E9=BB=98?=
 =?UTF-8?q?=E8=AE=A4=E6=8E=A5=E5=8F=A3=E7=B1=BB?=
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---
 .../cn/hutool/core/clone/DefaultClone.java    | 29 +++++++
 .../hutool/core/clone/DefaultCloneTest.java   | 86 +++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 hutool-core/src/main/java/cn/hutool/core/clone/DefaultClone.java
 create mode 100644 hutool-core/src/test/java/cn/hutool/core/clone/DefaultCloneTest.java

diff --git a/hutool-core/src/main/java/cn/hutool/core/clone/DefaultClone.java b/hutool-core/src/main/java/cn/hutool/core/clone/DefaultClone.java
new file mode 100644
index 000000000..acfb5f6c4
--- /dev/null
+++ b/hutool-core/src/main/java/cn/hutool/core/clone/DefaultClone.java
@@ -0,0 +1,29 @@
+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);
+		}
+	}
+}
+
+
diff --git a/hutool-core/src/test/java/cn/hutool/core/clone/DefaultCloneTest.java b/hutool-core/src/test/java/cn/hutool/core/clone/DefaultCloneTest.java
new file mode 100644
index 000000000..c2c45285a
--- /dev/null
+++ b/hutool-core/src/test/java/cn/hutool/core/clone/DefaultCloneTest.java
@@ -0,0 +1,86 @@
+package cn.hutool.core.clone;
+
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class DefaultCloneTest {
+
+	@Test
+	public void clone0() {
+		Car oldCar = new Car();
+		oldCar.setId(1);
+		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());
+
+		newCar.setId(2);
+		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;
+	}
+
+	public void setId(Integer id) {
+		this.id = id;
+	}
+
+	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 + '\'' +
+				'}';
+	}
+}
+
+