From cc6a3d4964b8dfc78dd40d62d8b4540821fb82bb Mon Sep 17 00:00:00 2001
From: Looly <loolly@gmail.com>
Date: Sun, 12 Mar 2023 16:01:07 +0800
Subject: [PATCH] fix bug

---
 .../java/cn/hutool/core/io/file/FileMagicNumber.java | 12 ++++++++----
 .../java/cn/hutool/core/io/FileTypeUtilTest.java     |  2 +-
 hutool-core/src/test/resources/1.txt                 |  1 +
 3 files changed, 10 insertions(+), 5 deletions(-)
 create mode 100644 hutool-core/src/test/resources/1.txt

diff --git a/hutool-core/src/main/java/cn/hutool/core/io/file/FileMagicNumber.java b/hutool-core/src/main/java/cn/hutool/core/io/file/FileMagicNumber.java
index 01c22a49a..bb7a1d02c 100644
--- a/hutool-core/src/main/java/cn/hutool/core/io/file/FileMagicNumber.java
+++ b/hutool-core/src/main/java/cn/hutool/core/io/file/FileMagicNumber.java
@@ -394,6 +394,9 @@ public enum FileMagicNumber {
 	WOFF("font/woff", "woff") {
 		@Override
 		public boolean match(final byte[] bytes) {
+			if(bytes.length < 8){
+				return false;
+			}
 			final boolean flag1 = Objects.equals(bytes[0], (byte) 0x77)
 					&& Objects.equals(bytes[1], (byte) 0x4f)
 					&& Objects.equals(bytes[2], (byte) 0x46)
@@ -410,8 +413,7 @@ public enum FileMagicNumber {
 					&& Objects.equals(bytes[5], (byte) 0x72)
 					&& Objects.equals(bytes[6], (byte) 0x75)
 					&& Objects.equals(bytes[7], (byte) 0x65);
-			return bytes.length > 7
-					&& (flag1 && (flag2 || flag3 || flag4));
+			return flag1 && (flag2 || flag3 || flag4);
 		}
 	},
 	/**
@@ -420,6 +422,9 @@ public enum FileMagicNumber {
 	WOFF2("font/woff2", "woff2") {
 		@Override
 		public boolean match(final byte[] bytes) {
+			if(bytes.length < 8){
+				return false;
+			}
 			final boolean flag1 = Objects.equals(bytes[0], (byte) 0x77)
 					&& Objects.equals(bytes[1], (byte) 0x4f)
 					&& Objects.equals(bytes[2], (byte) 0x46)
@@ -436,8 +441,7 @@ public enum FileMagicNumber {
 					&& Objects.equals(bytes[5], (byte) 0x72)
 					&& Objects.equals(bytes[6], (byte) 0x75)
 					&& Objects.equals(bytes[7], (byte) 0x65);
-			return bytes.length > 7
-					&& (flag1 && (flag2 || flag3 || flag4));
+			return flag1 && (flag2 || flag3 || flag4);
 		}
 	},
 	/**
diff --git a/hutool-core/src/test/java/cn/hutool/core/io/FileTypeUtilTest.java b/hutool-core/src/test/java/cn/hutool/core/io/FileTypeUtilTest.java
index e7d865f5f..3c6da37ff 100755
--- a/hutool-core/src/test/java/cn/hutool/core/io/FileTypeUtilTest.java
+++ b/hutool-core/src/test/java/cn/hutool/core/io/FileTypeUtilTest.java
@@ -90,7 +90,7 @@ public class FileTypeUtilTest {
 
 	@Test
 	public void issueI6MACITest() {
-		final File file = FileUtil.file("text.txt");
+		final File file = FileUtil.file("1.txt");
 		final String type = FileTypeUtil.getType(file);
 		Assert.assertEquals("txt", type);
 	}
diff --git a/hutool-core/src/test/resources/1.txt b/hutool-core/src/test/resources/1.txt
new file mode 100644
index 000000000..d00491fd7
--- /dev/null
+++ b/hutool-core/src/test/resources/1.txt
@@ -0,0 +1 @@
+1