From 327502a8466420532809892c9701bd2c506ba9c4 Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Mon, 15 Jun 2020 09:11:40 +0800
Subject: [PATCH] fix IoUtil bug

---
 CHANGELOG.md                                                   | 3 ++-
 hutool-core/src/main/java/cn/hutool/core/io/IoUtil.java        | 2 +-
 hutool-core/src/main/java/cn/hutool/core/lang/Validator.java   | 2 +-
 .../src/main/java/cn/hutool/core/lang/tree/TreeUtil.java       | 2 +-
 4 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1fa14e059..e3e704d8d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 
 -------------------------------------------------------------------------------------------------------------
 
-## 5.3.8 (2020-06-12)
+## 5.3.8 (2020-06-15)
 
 ### 新特性
 * 【core   】     增加ISO8601日期格式（issue#904@Github）
@@ -15,6 +15,7 @@
 * 【json   】     修复append方法导致的JSONConfig传递失效问题（issue#906@Github）
 * 【core   】     修复CollUtil.subtractToList判断错误（pr#915@Github）
 * 【poi    】     修复WordWriter写表格问题（pr#914@Github）
+* 【core   】     修复IoUtil.readBytes缓存数组长度问题（issue#I1KIUE@Github）
 
 -------------------------------------------------------------------------------------------------------------
 
diff --git a/hutool-core/src/main/java/cn/hutool/core/io/IoUtil.java b/hutool-core/src/main/java/cn/hutool/core/io/IoUtil.java
index 9d368316c..28d44cdfb 100644
--- a/hutool-core/src/main/java/cn/hutool/core/io/IoUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/io/IoUtil.java
@@ -601,7 +601,7 @@ public class IoUtil {
 			throw new IORuntimeException(e);
 		}
 		if (readLength > 0 && readLength < length) {
-			byte[] b2 = new byte[length];
+			byte[] b2 = new byte[readLength];
 			System.arraycopy(b, 0, b2, 0, readLength);
 			return b2;
 		} else {
diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/Validator.java b/hutool-core/src/main/java/cn/hutool/core/lang/Validator.java
index 2e99a4e8f..6b6946920 100644
--- a/hutool-core/src/main/java/cn/hutool/core/lang/Validator.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/Validator.java
@@ -675,7 +675,7 @@ public class Validator {
 	 * 验证是否为可用邮箱地址
 	 *
 	 * @param value 值
-	 * @return 否为可用邮箱地址
+	 * @return true为可用邮箱地址
 	 */
 	public static boolean isEmail(CharSequence value) {
 		return isMatchRegex(EMAIL, value);
diff --git a/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java b/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java
index 6432a7360..8a4d9e0e4 100644
--- a/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/lang/tree/TreeUtil.java
@@ -121,7 +121,7 @@ public class TreeUtil {
 
 	/**
 	 * 获取ID对应的节点，如果有多个ID相同的节点，只返回第一个。<br>
-	 * 此方法只查找此节点及子节点，采用广度优先遍历。
+	 * 此方法只查找此节点及子节点，采用递归深度优先遍历。
 	 *
 	 * @param <T> ID类型
 	 * @param node 节点