diff --git a/src/main/java/com/fanruan/api/util/IOKit.java b/src/main/java/com/fanruan/api/util/IOKit.java
index 3ec1f3d..9ee5efa 100644
--- a/src/main/java/com/fanruan/api/util/IOKit.java
+++ b/src/main/java/com/fanruan/api/util/IOKit.java
@@ -13,7 +13,7 @@ import java.io.Reader;
 import java.io.UnsupportedEncodingException;
 import java.io.Writer;
 import java.nio.channels.Channel;
-import java.nio.charset.StandardCharsets;
+import java.nio.charset.Charset;
 
 /**
  * @author richie
@@ -108,7 +108,7 @@ public class IOKit {
      * @return 读取出来的字符串
      * @throws UnsupportedEncodingException 编码类型不支持则抛出此异常
      */
-    public static String inputStream2String(InputStream is, StandardCharsets charset)
+    public static String inputStream2String(InputStream is, Charset charset)
             throws UnsupportedEncodingException {
         return CommonIOUtils.inputStream2String(is, charset.toString());
     }
@@ -196,7 +196,7 @@ public class IOKit {
      * @param encode 读取资源所用的编码
      * @return 表示资源内容的字符串
      */
-    public static String readResourceAsString(String path, StandardCharsets encode) {
+    public static String readResourceAsString(String path, Charset encode) {
         return IOUtils.readResourceAsString(path, encode.toString());
     }
 
diff --git a/src/test/java/com/fanruan/api/util/IOKitTest.java b/src/test/java/com/fanruan/api/util/IOKitTest.java
index b426b68..e9922fc 100644
--- a/src/test/java/com/fanruan/api/util/IOKitTest.java
+++ b/src/test/java/com/fanruan/api/util/IOKitTest.java
@@ -3,6 +3,7 @@ package com.fanruan.api.util;
 import com.fanruan.api.Prepare;
 import org.junit.Assert;
 import org.junit.Test;
+import sun.nio.cs.ext.GBK;
 
 import java.nio.charset.StandardCharsets;
 
@@ -17,4 +18,10 @@ public class IOKitTest extends Prepare {
     public void testEncode() {
         Assert.assertEquals("UTF-8", StandardCharsets.UTF_8.toString());
     }
+
+    @Test
+    public void testReadResourceAsString() {
+        String text = IOKit.readResourceAsString("/com/fanruan/api/util/iokit.txt");
+        Assert.assertEquals("Hello World!", text);
+    }
 }
\ No newline at end of file
diff --git a/src/test/resources/com/fanruan/api/util/iokit.txt b/src/test/resources/com/fanruan/api/util/iokit.txt
new file mode 100644
index 0000000..c57eff5
--- /dev/null
+++ b/src/test/resources/com/fanruan/api/util/iokit.txt
@@ -0,0 +1 @@
+Hello World!
\ No newline at end of file