diff --git a/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java b/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
index 6381187bb..91db57c57 100755
--- a/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
+++ b/hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
@@ -1810,8 +1810,21 @@ public class CharSequenceUtil extends StrChecker {
 	 * @param length    要截取的长度
 	 * @return 截取后的字符串
 	 */
-	public static String subWithLength(final String input, final int fromIndex, final int length) {
-		return sub(input, fromIndex, fromIndex + length);
+	public static String subByLength(final String input, final int fromIndex, final int length) {
+		if (isEmpty(input)) {
+			return null;
+		}
+		if (length <= 0) {
+			return EMPTY;
+		}
+
+		final int toIndex;
+		if(fromIndex < 0){
+			toIndex = fromIndex - length;
+		}else{
+			toIndex = fromIndex + length;
+		}
+		return sub(input, fromIndex, toIndex);
 	}
 
 	/**
diff --git a/hutool-core/src/main/java/cn/hutool/core/tree/TreeBuilder.java b/hutool-core/src/main/java/cn/hutool/core/tree/TreeBuilder.java
index 7d883e9e9..a9b782247 100644
--- a/hutool-core/src/main/java/cn/hutool/core/tree/TreeBuilder.java
+++ b/hutool-core/src/main/java/cn/hutool/core/tree/TreeBuilder.java
@@ -1,13 +1,12 @@
 package cn.hutool.core.tree;
 
-import cn.hutool.core.lang.builder.Builder;
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.lang.Assert;
-import cn.hutool.core.tree.parser.NodeParser;
+import cn.hutool.core.lang.builder.Builder;
 import cn.hutool.core.map.MapUtil;
+import cn.hutool.core.tree.parser.NodeParser;
 import cn.hutool.core.util.ObjUtil;
 
-import java.util.HashMap;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
@@ -56,7 +55,7 @@ public class TreeBuilder<E> implements Builder<MapTree<E>> {
 	public TreeBuilder(final E rootId, final TreeNodeConfig config) {
 		root = new MapTree<>(config);
 		root.setId(rootId);
-		this.idTreeMap = new HashMap<>();
+		this.idTreeMap = new LinkedHashMap<>();
 	}
 
 	/**
diff --git a/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
index 48a525bc2..871749645 100755
--- a/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
@@ -212,4 +212,10 @@ public class CharSequenceUtilTest {
 		final String result = StrUtil.replaceFirst(str, "YES", "", true);
 		Assert.assertEquals(result, " and yes i do");
 	}
+
+	@Test
+	public void issueI5YN49Test() {
+		final String str = "A5E6005700000000000000000000000000000000000000090D0100000000000001003830";
+		Assert.assertEquals("38", StrUtil.subByLength(str,-2,2));
+	}
 }
diff --git a/hutool-http/src/test/java/cn/hutool/http/HttpRequestTest.java b/hutool-http/src/test/java/cn/hutool/http/HttpRequestTest.java
index 3d78669cd..2c96ed6f4 100644
--- a/hutool-http/src/test/java/cn/hutool/http/HttpRequestTest.java
+++ b/hutool-http/src/test/java/cn/hutool/http/HttpRequestTest.java
@@ -240,4 +240,11 @@ public class HttpRequestTest {
 		final HttpRequest a = HttpRequest.post("https://hutool.cn/").form("a", 1);
 		Console.log(a.toString());
 	}
+
+	@Test
+	@Ignore
+	public void issueI5Y68WTest() {
+		final HttpResponse httpResponse = HttpRequest.get("http://82.157.17.173:8100/app/getAddress").execute();
+		Console.log(httpResponse.body());
+	}
 }