diff --git a/src/main/java/org/aohe/control/Operational.java b/src/main/java/org/aohe/control/Operational.java
index 22d4e16..6532f84 100644
--- a/src/main/java/org/aohe/control/Operational.java
+++ b/src/main/java/org/aohe/control/Operational.java
@@ -79,7 +79,7 @@ public class Operational {
             WebCamUtils.setViewSizes(param.getInteger("width"), param.getInteger("height"));
             r = R.ok();
         }else if("002007".equals(function)){
-            //打开摄像头传输流
+            //关闭摄像头传输流
             WebCamUtils.closeWebcamTransfer();
         }
 
diff --git a/src/main/java/org/aohe/result/R.java b/src/main/java/org/aohe/result/R.java
index 3621a17..fdf409f 100644
--- a/src/main/java/org/aohe/result/R.java
+++ b/src/main/java/org/aohe/result/R.java
@@ -32,6 +32,10 @@ public class R<T> {
     public static R fail(String msg) {
         return new R<>("500", msg, null, false);
     }
+
+    public static R noMean(){
+        return new R<>("201", "没有找到对应的方法", null, true);
+    }
     
     public String toJsonStr() {
         return JSONUtil.toJsonStr(this);
diff --git a/src/main/java/org/aohe/variable/TwainContainer.java b/src/main/java/org/aohe/variable/TwainContainer.java
index 27614f8..3fe67b0 100644
--- a/src/main/java/org/aohe/variable/TwainContainer.java
+++ b/src/main/java/org/aohe/variable/TwainContainer.java
@@ -54,6 +54,10 @@ public abstract class TwainContainer {
     }
 
     private int intValue(Object obj) throws TwainException {
+        if(obj == null){
+            return 0;
+        }
+
         if (obj instanceof Number) {
             return ((Number) obj).intValue();
         } else if (obj instanceof Boolean) {
diff --git a/src/main/java/org/aohe/web/SocketServer.java b/src/main/java/org/aohe/web/SocketServer.java
index c27e338..00fcabd 100644
--- a/src/main/java/org/aohe/web/SocketServer.java
+++ b/src/main/java/org/aohe/web/SocketServer.java
@@ -43,7 +43,7 @@ public class SocketServer extends WebSocketServer {
     public void onMessage(WebSocket conn, String message) {
         JSONObject json = SocketUtils.isNoPingMessage(message);
         if (json == null){
-            conn.send(R.ok().toJsonStr());
+            conn.send(R.noMean().toJsonStr());
         }else{
             conn.send(selectOperational(json));
         }
diff --git a/src/main/java/org/aohe/web/SocketUtils.java b/src/main/java/org/aohe/web/SocketUtils.java
index bdda5b4..f0775bb 100644
--- a/src/main/java/org/aohe/web/SocketUtils.java
+++ b/src/main/java/org/aohe/web/SocketUtils.java
@@ -77,11 +77,16 @@ public class SocketUtils {
      * @return
      */
     public static JSONObject isNoPingMessage(String message){
-        JSONObject json = JSONObject.parse(message);
-        String type = json.getString("type");
-        if("ping".equals(type)){
-            return json;
+        try{
+            JSONObject json = JSONObject.parse(message);
+            String type = json.getString("type");
+            if("ping".equals(type)){
+                return json;
+            }
+            return null;
+        }catch (Exception e){
+            return null;
         }
-        return null;
+
     }
 }
diff --git a/src/main/resources/logback.xml b/src/main/resources/logback.xml
index 8f31338..b3f0230 100644
--- a/src/main/resources/logback.xml
+++ b/src/main/resources/logback.xml
@@ -20,7 +20,7 @@
             <fileNamePattern>${log.path}/ScanService.%d{yyyy-MM-dd}.log</fileNamePattern>
             <!-- 日志最大的历史 60天 -->
             <maxHistory>60</maxHistory>
-            <totalSizeCap>200M</totalSizeCap>
+            <totalSizeCap>200MB</totalSizeCap>
         </rollingPolicy>
         <encoder>
             <pattern>${log.pattern}</pattern>