diff --git a/pom.xml b/pom.xml
index 9e56093..ddc3dec 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>
-            <version>4.12</version>
+            <version>4.13.1</version>
             <scope>test</scope>
         </dependency>
         <dependency>
@@ -62,12 +62,8 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-buffer</artifactId>
-            <version>4.1.51.Final</version>
-        </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>3.11</version>
+            <version>4.1.54.Final</version>
+            <scope>provided</scope>
         </dependency>
     </dependencies>
 
diff --git a/src/main/java/io/github/yezhihao/protostar/field/BasicField.java b/src/main/java/io/github/yezhihao/protostar/field/BasicField.java
index 03fc6ee..4fd677a 100644
--- a/src/main/java/io/github/yezhihao/protostar/field/BasicField.java
+++ b/src/main/java/io/github/yezhihao/protostar/field/BasicField.java
@@ -1,8 +1,8 @@
 package io.github.yezhihao.protostar.field;
 
 import io.github.yezhihao.protostar.annotation.Field;
+import io.github.yezhihao.protostar.util.StrUtils;
 import io.netty.buffer.ByteBuf;
-import org.apache.commons.lang3.ArrayUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -44,7 +44,7 @@ public abstract class BasicField<T> implements Comparable<BasicField<T>> {
 
     public void println(int index, String desc, String hex, Object value) {
         if (value != null)
-            System.out.println(index + "\t" + "[" + hex + "] " + desc + ": " + (value.getClass().isArray() ? ArrayUtils.toString(value) : value));
+            System.out.println(index + "\t" + "[" + hex + "] " + desc + ": " + StrUtils.toString(value));
     }
 
     public int index() {
diff --git a/src/main/java/io/github/yezhihao/protostar/util/StrUtils.java b/src/main/java/io/github/yezhihao/protostar/util/StrUtils.java
new file mode 100644
index 0000000..c8408e5
--- /dev/null
+++ b/src/main/java/io/github/yezhihao/protostar/util/StrUtils.java
@@ -0,0 +1,93 @@
+package io.github.yezhihao.protostar.util;
+
+/**
+ * @author yezhihao
+ * home https://gitee.com/yezhihao/jt808-server
+ */
+public class StrUtils {
+
+    public static String toString(Object value) {
+        if (!value.getClass().isArray())
+            return value.toString();
+
+        StringBuilder root = new StringBuilder(32);
+        toString(value, root);
+        return root.toString();
+    }
+
+    public static StringBuilder toString(Object value, StringBuilder builder) {
+        if (value == null)
+            return builder;
+
+        builder.append('[');
+        int start = builder.length();
+
+        if (value instanceof long[]) {
+            long[] array = (long[]) value;
+            for (long t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof int[]) {
+            int[] array = (int[]) value;
+            for (int t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof short[]) {
+            short[] array = (short[]) value;
+            for (short t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof byte[]) {
+            byte[] array = (byte[]) value;
+            for (byte t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof char[]) {
+            char[] array = (char[]) value;
+            for (char t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof double[]) {
+            double[] array = (double[]) value;
+            for (double t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof float[]) {
+            float[] array = (float[]) value;
+            for (float t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof boolean[]) {
+            boolean[] array = (boolean[]) value;
+            for (boolean t : array)
+                builder.append(t).append(',');
+
+        } else if (value instanceof String[]) {
+            String[] array = (String[]) value;
+            for (String t : array)
+                builder.append(t).append(',');
+
+        } else if (isArray(value)) {
+            Object[] array = (Object[]) value;
+            for (Object t : array)
+                toString(t, builder).append(',');
+
+        } else if (value instanceof Object[]) {
+            Object[] array = (Object[]) value;
+            for (Object t : array)
+                builder.append(t).append(',');
+        }
+
+        int end = builder.length();
+        if (end <= start) builder.append(']');
+        else builder.setCharAt(end - 1, ']');
+        return builder;
+    }
+
+    private static boolean isArray(Object value) {
+        Class<?> componentType = value.getClass().getComponentType();
+        if (componentType == null)
+            return false;
+        return componentType.isArray();
+    }
+}
\ No newline at end of file