diff --git a/app/src/main/java/qianmu/container/activity/H5/WebViewActivity.java b/app/src/main/java/qianmu/container/activity/H5/WebViewActivity.java
index e05a5ca..1b52be9 100644
--- a/app/src/main/java/qianmu/container/activity/H5/WebViewActivity.java
+++ b/app/src/main/java/qianmu/container/activity/H5/WebViewActivity.java
@@ -357,8 +357,15 @@ public class WebViewActivity extends BaseActivity {
 
     @Override
     protected void onDestroy() {
-        super.onDestroy();
         LoggerUtil.e(TAG, "onDestroy()");
+        if (binding.web != null) {
+            binding.web.stopLoading();
+            binding.web.clearHistory();
+            binding.web.removeAllViews();
+            binding.web.destroy();
+        }
+        if (handler != null) handler.removeCallbacksAndMessages(null);
+        super.onDestroy();
     }
 
     private void loadH5Url(boolean loadUrl) {
diff --git a/app/src/main/java/qianmu/container/util/FileUtil.java b/app/src/main/java/qianmu/container/util/FileUtil.java
index cce080e..71cae97 100644
--- a/app/src/main/java/qianmu/container/util/FileUtil.java
+++ b/app/src/main/java/qianmu/container/util/FileUtil.java
@@ -305,23 +305,22 @@ public class FileUtil {
      * @return
      */
     public static byte[] file2byte(String filePath) {
-        byte[] buffer = null;
-        try {
-            File file = new File(filePath);
-            FileInputStream fis = new FileInputStream(file);
-            ByteArrayOutputStream bos = new ByteArrayOutputStream();
-            byte[] b = new byte[1024];
+        File file = new File(filePath);
+        if (!file.exists() || !file.isFile()) {
+            return null;
+        }
+        try (FileInputStream fis = new FileInputStream(file);
+            ByteArrayOutputStream bos = new ByteArrayOutputStream((int) file.length())) {
+            byte[] buffer = new byte[8192]; // 8KB 更合理
             int n;
-            while ((n = fis.read(b)) != -1) {
-                bos.write(b, 0, n);
+            while ((n = fis.read(buffer)) != -1) {
+                bos.write(buffer, 0, n);
             }
-            fis.close();
-            bos.close();
-            buffer = bos.toByteArray();
-        } catch (Throwable t) {
-            LoggerUtil.e("file2byte", StringUtil.getThrowableStr(t));
+            return bos.toByteArray();
+        } catch (IOException e) {
+            LoggerUtil.e("file2byte", StringUtil.getThrowableStr(e));
+            return null;
         }
-        return buffer;
     }
 
 
@@ -413,7 +412,6 @@ public class FileUtil {
             if (!file.exists()) file.createNewFile();
             FileWriter fileWriter = new FileWriter(filePath, append);
             fileWriter.write(content);
-            if (fileWriter == null) return;
             fileWriter.flush();
             fileWriter.close();
         } catch (Throwable t) {
@@ -579,21 +577,24 @@ public class FileUtil {
     /**
      * 读取本地JSON,显示汉字正确，txt文件设置时UTF-8，UNIX
      * */
-    public static String readLocalJsonForStorage(Context context, String fileName){
-
-        String resultString="";
-
-        try {
-            File file = new File(fileName);
-            InputStream inputStream=new FileInputStream(file);
-            byte[] buffer=new byte[inputStream.available()];
-            inputStream.read(buffer);
-            resultString=new String(buffer,"GB2312");
-            inputStream.close();
+    public static String readLocalJsonForStorage(Context context, String fileName) {
+        File file = new File(fileName);
+        if (!file.exists()) {
+            return null;
+        }
+        StringBuilder sb = new StringBuilder();
+        try (InputStream is = new FileInputStream(file);
+            InputStreamReader isr = new InputStreamReader(is, "UTF-8");
+            BufferedReader br = new BufferedReader(isr)) {
+            String line;
+            while ((line = br.readLine()) != null) {
+                sb.append(line);
+            }
         } catch (Exception e) {
-            // TODO: handle exception
+            e.printStackTrace(); // 至少打日志
+            return null;
         }
-        return resultString;
-
+        return sb.toString();
     }
+
 }