diff --git a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/Mvc.java b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/Mvc.java
index a9c1815a0..2da42bd0c 100644
--- a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/Mvc.java
+++ b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/Mvc.java
@@ -186,7 +186,7 @@ public void callMethod(MvcContext context, MvcRequest request, MvcResponse respo
         Safe.run(() -> {
             Object[] params = new Object[]{null};
             //If there is only one parameter and it is a String, no further parsing is necessary; it can be used directly.
-            if (isSingleStringParameterMethod(method)) {
+            if (isSingleStringParameterMethod(method) && request.getMethod().toUpperCase().equals("POST")) {
                 params[0] = new String(request.getBody());
             } else {
                 JsonElement args = getArgs(method, request.getMethod().toLowerCase(Locale.ROOT), request, context);
diff --git a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcContext.java b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcContext.java
index acd896819..d3acec10a 100644
--- a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcContext.java
+++ b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcContext.java
@@ -63,6 +63,8 @@ public class MvcContext {
 
     private Object response;
 
+    private String contentType;
+
     /**
      * rate limited or exceeded quota
      */
diff --git a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcResponse.java b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcResponse.java
index aed8d0b30..1b7409746 100644
--- a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcResponse.java
+++ b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcResponse.java
@@ -42,6 +42,9 @@ public void writeAndFlush(MvcContext context, HttpResponseStatus status, String
         } else {
             FullHttpResponse response = HttpResponseUtils.create(new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, status, Unpooled.wrappedBuffer(message.getBytes())));
             response.headers().set(HttpHeaderNames.CONTENT_LENGTH, message.getBytes().length);
+            if (StringUtils.isNotEmpty(context.getContentType())) {
+                response.headers().set(HttpHeaderNames.CONTENT_TYPE, context.getContentType());
+            }
             context.getResHeaders().forEach((k, v) -> response.headers().set(k, v));
             if (context.isAllowCross()) {
                 response.headers().set(HttpHeaderNames.ACCESS_CONTROL_ALLOW_ORIGIN, "*");
@@ -53,7 +56,7 @@ public void writeAndFlush(MvcContext context, HttpResponseStatus status, String
                 HttpSessionManager.setSessionId(context, HttpSessionManager.isHasSessionId(context.getHeaders()), response);
             }
             if (StringUtils.isNotEmpty(context.getRequest().headers().get(HttpHeaderNames.CONNECTION))) {
-                response.headers().add(HttpHeaderNames.CONNECTION,context.getRequest().headers().get(HttpHeaderNames.CONNECTION));
+                response.headers().add(HttpHeaderNames.CONNECTION, context.getRequest().headers().get(HttpHeaderNames.CONNECTION));
             }
             ctx.writeAndFlush(response);
         }
diff --git a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcRunnable.java b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcRunnable.java
index ab2bd9867..56af4e867 100644
--- a/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcRunnable.java
+++ b/jcommon/docean/src/main/java/com/xiaomi/youpin/docean/mvc/MvcRunnable.java
@@ -104,7 +104,7 @@ public void run() {
 
     private void call() {
         if (context.isWebsocket()) {
-            WsRequest req = new Gson().fromJson(new String(request.getBody()), WsRequest.class);
+            WsRequest req = GsonUtils.gson.fromJson(new String(request.getBody()), WsRequest.class);
             request.setPath(req.getPath());
             request.setBody(GsonUtils.gson.toJson(req.getParams()).getBytes());
         }
@@ -122,6 +122,9 @@ private void call() {
                 sendNotFoundResponse();
                 return;
             }
+            if(path.endsWith(".html")) {
+                context.setContentType("text/html; charset=utf-8");
+            }
             response.writeAndFlush(context, content);
             return;
         }
diff --git a/jcommon/docean/src/test/java/com/xiaomi/youpin/docean/test/demo/DemoController.java b/jcommon/docean/src/test/java/com/xiaomi/youpin/docean/test/demo/DemoController.java
index fe68c91b7..e2322945e 100644
--- a/jcommon/docean/src/test/java/com/xiaomi/youpin/docean/test/demo/DemoController.java
+++ b/jcommon/docean/src/test/java/com/xiaomi/youpin/docean/test/demo/DemoController.java
@@ -157,6 +157,12 @@ public String testGet(@RequestParam("a") int a, @RequestParam("b") int b) {
         return String.valueOf(a + b);
     }
 
+    @TAnno
+    @RequestMapping(path = "/testv", method = "get")
+    public String testV(@RequestParam("a") String a) {
+        return a;
+    }
+
     @RequestMapping(path = "/testpost")
     public String testPost(String b) {
         log.info("b={}", b);