diff --git a/server/WebApi.cpp b/server/WebApi.cpp
index 39ecb6b1..640c7428 100755
--- a/server/WebApi.cpp
+++ b/server/WebApi.cpp
@@ -644,12 +644,12 @@ void installWebApi() {
                        allArgs["enable_hls"],/* 是否hls转发 */
                        allArgs["enable_mp4"],/* 是否MP4录制 */
                        allArgs["rtp_type"],
-                       [invoker,val,headerOut](const SockException &ex,const string &key){
-                           if(ex){
-                               const_cast<Value &>(val)["code"] = API::OtherFailed;
-                               const_cast<Value &>(val)["msg"] = ex.what();
-                           }else{
-                               const_cast<Value &>(val)["data"]["key"] = key;
+                       [invoker,val,headerOut](const SockException &ex,const string &key) mutable{
+                           if (ex) {
+                               val["code"] = API::OtherFailed;
+                               val["msg"] = ex.what();
+                           } else {
+                               val["data"]["key"] = key;
                            }
                            invoker(200, headerOut, val.toStyledString());
                        });
@@ -708,12 +708,12 @@ void installWebApi() {
         auto enable_mp4 = allArgs["enable_mp4"].as<int>();
 
         addFFmpegSource(allArgs["ffmpeg_cmd_key"], src_url, dst_url, timeout_ms, enable_hls, enable_mp4,
-                        [invoker, val, headerOut](const SockException &ex, const string &key) {
+                        [invoker, val, headerOut](const SockException &ex, const string &key) mutable{
             if (ex) {
-                const_cast<Value &>(val)["code"] = API::OtherFailed;
-                const_cast<Value &>(val)["msg"] = ex.what();
+                val["code"] = API::OtherFailed;
+                val["msg"] = ex.what();
             } else {
-                const_cast<Value &>(val)["data"]["key"] = key;
+                val["data"]["key"] = key;
             }
             invoker(200, headerOut, val.toStyledString());
         });
@@ -815,12 +815,12 @@ void installWebApi() {
         }
 
         //src_port为空时，则随机本地端口
-        src->startSendRtp(allArgs["dst_url"], allArgs["dst_port"], allArgs["ssrc"], allArgs["is_udp"], allArgs["src_port"], [val, headerOut, invoker](uint16_t local_port, const SockException &ex){
+        src->startSendRtp(allArgs["dst_url"], allArgs["dst_port"], allArgs["ssrc"], allArgs["is_udp"], allArgs["src_port"], [val, headerOut, invoker](uint16_t local_port, const SockException &ex) mutable{
             if (ex) {
-                const_cast<Value &>(val)["code"] = API::OtherFailed;
-                const_cast<Value &>(val)["msg"] = ex.what();
+                val["code"] = API::OtherFailed;
+                val["msg"] = ex.what();
             }
-            const_cast<Value &>(val)["local_port"] = local_port;
+            val["local_port"] = local_port;
             invoker(200, headerOut, val.toStyledString());
         });
     });
@@ -1116,12 +1116,12 @@ void installWebApi() {
                         (1000 * timeout_sec) - 500,
                         false,
                         false,
-                        [invoker,val,headerOut](const SockException &ex,const string &key){
+                        [invoker,val,headerOut](const SockException &ex,const string &key) mutable{
                             if(ex){
-                                const_cast<Value &>(val)["code"] = API::OtherFailed;
-                                const_cast<Value &>(val)["msg"] = ex.what();
+                                val["code"] = API::OtherFailed;
+                                val["msg"] = ex.what();
                             }else{
-                                const_cast<Value &>(val)["data"]["key"] = key;
+                                val["data"]["key"] = key;
                             }
                             invoker(200, headerOut, val.toStyledString());
                         });
@@ -1141,12 +1141,12 @@ void installWebApi() {
                        true,/* 开启hls转发 */
                        false,/* 禁用MP4录制 */
                        0,//rtp over tcp方式拉流
-                       [invoker,val,headerOut](const SockException &ex,const string &key){
+                       [invoker,val,headerOut](const SockException &ex,const string &key) mutable{
                            if(ex){
-                               const_cast<Value &>(val)["code"] = API::OtherFailed;
-                               const_cast<Value &>(val)["msg"] = ex.what();
+                               val["code"] = API::OtherFailed;
+                               val["msg"] = ex.what();
                            }else{
-                               const_cast<Value &>(val)["data"]["key"] = key;
+                               val["data"]["key"] = key;
                            }
                            invoker(200, headerOut, val.toStyledString());
                        });
diff --git a/server/WebHook.cpp b/server/WebHook.cpp
index 8da8c2dc..16f8ddf3 100755
--- a/server/WebHook.cpp
+++ b/server/WebHook.cpp
@@ -126,9 +126,9 @@ void do_http_hook(const string &url,const ArgsType &body,const function<void(con
     requester->startRequester(url, [url, func, bodyStr, requester, pTicker](const SockException &ex,
                                                                             const string &status,
                                                                             const HttpClient::HttpHeader &header,
-                                                                            const string &strRecvBody) {
-        onceToken token(nullptr, [&]() {
-            const_cast<HttpRequester::Ptr &>(requester).reset();
+                                                                            const string &strRecvBody) mutable{
+        onceToken token(nullptr, [&]() mutable{
+            requester.reset();
         });
         parse_http_response(ex,status,header,strRecvBody,[&](const Value &obj,const string &err){
             if (func) {
diff --git a/src/Http/HttpFileManager.cpp b/src/Http/HttpFileManager.cpp
index d99a1f5c..735c053c 100644
--- a/src/Http/HttpFileManager.cpp
+++ b/src/Http/HttpFileManager.cpp
@@ -494,9 +494,9 @@ void HttpFileManager::onAccessPath(TcpSession &sender, Parser &parser, const Htt
             return;
         }
         //判断是否有权限访问该目录
-        canAccessPath(sender, parser, mediaInfo, true, [strMenu, cb](const string &errMsg, const HttpServerCookie::Ptr &cookie) {
+        canAccessPath(sender, parser, mediaInfo, true, [strMenu, cb](const string &errMsg, const HttpServerCookie::Ptr &cookie) mutable{
             if (!errMsg.empty()) {
-                const_cast<string &>(strMenu) = errMsg;
+                strMenu = errMsg;
             }
             StrCaseMap headerOut;
             if (cookie) {
diff --git a/src/Record/MP4Recorder.cpp b/src/Record/MP4Recorder.cpp
index 6b33cd7b..19cbb783 100644
--- a/src/Record/MP4Recorder.cpp
+++ b/src/Record/MP4Recorder.cpp
@@ -76,16 +76,16 @@ void MP4Recorder::asyncClose() {
     auto strFileTmp = _strFileTmp;
     auto strFile = _strFile;
     auto info = _info;
-    WorkThreadPool::Instance().getExecutor()->async([muxer,strFileTmp,strFile,info]() {
+    WorkThreadPool::Instance().getExecutor()->async([muxer,strFileTmp,strFile,info]() mutable{
         //获取文件录制时间，放在关闭mp4之前是为了忽略关闭mp4执行时间
-        const_cast<RecordInfo&>(info).time_len = (float)(::time(NULL) - info.start_time);
+        info.time_len = (float)(::time(NULL) - info.start_time);
         //关闭mp4非常耗时，所以要放在后台线程执行
         muxer->closeMP4();
 
         //获取文件大小
         struct stat fileData;
         stat(strFileTmp.data(), &fileData);
-        const_cast<RecordInfo &>(info).file_size = fileData.st_size;
+        info.file_size = fileData.st_size;
         if (fileData.st_size < 1024) {
             //录像文件太小，删除之
             File::delete_file(strFileTmp.data());