diff --git a/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileReader.java b/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileReader.java
index cce78d1ed..8a21d24c8 100644
--- a/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileReader.java
+++ b/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileReader.java
@@ -13,11 +13,10 @@
 package org.dromara.hutool.core.io.file;
 
 import org.dromara.hutool.core.exceptions.UtilException;
-import org.dromara.hutool.core.io.IORuntimeException;
-import org.dromara.hutool.core.io.IoUtil;
 import org.dromara.hutool.core.func.SerConsumer;
 import org.dromara.hutool.core.func.SerFunction;
-import org.dromara.hutool.core.text.StrUtil;
+import org.dromara.hutool.core.io.IORuntimeException;
+import org.dromara.hutool.core.io.IoUtil;
 import org.dromara.hutool.core.util.CharsetUtil;
 
 import java.io.*;
@@ -53,7 +52,7 @@ public class FileReader extends FileWrapper {
 	 * @return FileReader
 	 */
 	public static FileReader of(final File file){
-		return new FileReader(FileUtil.file(file), DEFAULT_CHARSET);
+		return new FileReader(file, DEFAULT_CHARSET);
 	}
 
 	// ------------------------------------------------------- Constructor start
@@ -76,27 +75,11 @@ public class FileReader extends FileWrapper {
 	 * @throws IORuntimeException IO异常
 	 */
 	public byte[] readBytes() throws IORuntimeException {
-		final long len = this.file.length();
-		if (len >= Integer.MAX_VALUE) {
-			throw new IORuntimeException("File is larger then max array size");
-		}
-
-		final byte[] bytes = new byte[(int) len];
-		InputStream in = null;
-		final int readLength;
 		try {
-			in = FileUtil.getInputStream(this.file);
-			readLength = in.read(bytes);
-			if(readLength < len){
-				throw new IOException(StrUtil.format("File length is [{}] but read [{}]!", len, readLength));
-			}
-		} catch (final Exception e) {
+			return Files.readAllBytes(this.file.toPath());
+		} catch (final IOException e) {
 			throw new IORuntimeException(e);
-		} finally {
-			IoUtil.closeQuietly(in);
 		}
-
-		return bytes;
 	}
 
 	/**
@@ -106,6 +89,7 @@ public class FileReader extends FileWrapper {
 	 * @throws IORuntimeException IO异常
 	 */
 	public String readString() throws IORuntimeException{
+		// TODO JDK11+不再推荐使用这种方式，推荐使用Files.readString
 		return new String(readBytes(), this.charset);
 	}
 
diff --git a/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileUtil.java b/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileUtil.java
index c24356eb7..624632062 100644
--- a/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileUtil.java
+++ b/hutool-core/src/main/java/org/dromara/hutool/core/io/file/FileUtil.java
@@ -1612,7 +1612,7 @@ public class FileUtil extends PathUtil {
 	 * @throws IORuntimeException IO异常
 	 */
 	public static byte[] readBytes(final File file) throws IORuntimeException {
-		return org.dromara.hutool.core.io.file.FileReader.of(file).readBytes();
+		return readBytes(file.toPath());
 	}
 
 	/**
diff --git a/hutool-core/src/test/java/org/dromara/hutool/core/io/FileUtilTest.java b/hutool-core/src/test/java/org/dromara/hutool/core/io/FileUtilTest.java
index ba4b2ecfd..9dd631324 100644
--- a/hutool-core/src/test/java/org/dromara/hutool/core/io/FileUtilTest.java
+++ b/hutool-core/src/test/java/org/dromara/hutool/core/io/FileUtilTest.java
@@ -483,4 +483,10 @@ public class FileUtilTest {
 		path = "test\\aaa.txt";
 		Assertions.assertFalse(FileUtil.isAbsolutePath(path));
 	}
+
+	@Test
+	void readBytesTest() {
+		final byte[] bytes = FileUtil.readBytes("test.properties");
+		Assertions.assertEquals(125, bytes.length);
+	}
 }
diff --git a/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlDecoderTest.java b/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlDecoderTest.java
index 2c162d329..d7b72fdee 100644
--- a/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlDecoderTest.java
+++ b/hutool-core/src/test/java/org/dromara/hutool/core/net/UrlDecoderTest.java
@@ -51,14 +51,14 @@ class UrlDecoderTest {
 	@Test
 	void decodeCharSetIsNullToStrTest() {
 		final String hello = "你好";
-		final String decode = URLDecoder.decode(hello, null, true);
+		String decode = URLDecoder.decode(hello, null, true);
 		Assertions.assertEquals(hello, decode);
 	}
 
 	@Test
 	void decodeStrIsEmptyToStrTest() {
 		final String strEmpty = "";
-		final String decode = URLDecoder.decode(strEmpty, StandardCharsets.UTF_8, true);
+		String decode = URLDecoder.decode(strEmpty, StandardCharsets.UTF_8, true);
 		Assertions.assertEquals(strEmpty, decode);
 	}
 
@@ -66,19 +66,19 @@ class UrlDecoderTest {
 	void decodeStrWithUTF8ToStrTest() {
 		final String exceptedDecode = "你好";
 		final String encode = "%E4%BD%A0%E5%A5%BD";
-		final String s1 = URLDecoder.decode(encode);
+		String s1 = URLDecoder.decode(encode);
 		Assertions.assertEquals(exceptedDecode, s1);
 
-		final String s2 = URLDecoder.decode(encode, StandardCharsets.UTF_8);
+		String s2 = URLDecoder.decode(encode, StandardCharsets.UTF_8);
 		Assertions.assertEquals(exceptedDecode, s2);
 
-		final String s3 = URLDecoder.decode(encode, true);
+		String s3 = URLDecoder.decode(encode, true);
 		Assertions.assertEquals(exceptedDecode, s3);
 
-		final String s4 = URLDecoder.decode(encode + "+", false);
+		String s4 = URLDecoder.decode(encode + "+", false);
 		Assertions.assertEquals(exceptedDecode + "+", s4);
 
-		final String s5 = URLDecoder.decode(encode, StandardCharsets.UTF_8, false);
+		String s5 = URLDecoder.decode(encode, StandardCharsets.UTF_8, false);
 		Assertions.assertEquals(exceptedDecode, s5);
 	}
 
@@ -86,10 +86,10 @@ class UrlDecoderTest {
 	void decodeStrWithUTF8ToByteTest(){
 		final String exceptedDecode = "你好";
 		final String encode = "%E4%BD%A0%E5%A5%BD";
-		final byte[] decode = URLDecoder.decode(encode.getBytes(StandardCharsets.UTF_8));
+		byte[] decode = URLDecoder.decode(encode.getBytes(StandardCharsets.UTF_8));
 		Assertions.assertEquals(exceptedDecode, new String(decode,StandardCharsets.UTF_8));
 
-		final byte[] decode1 = URLDecoder.decode((encode + "+").getBytes(StandardCharsets.UTF_8));
+		byte[] decode1 = URLDecoder.decode((encode + "+").getBytes(StandardCharsets.UTF_8));
 		Assertions.assertEquals(exceptedDecode+" ",new String(decode1,StandardCharsets.UTF_8));
 	}
 }