修改打开文件的方式为累加写入。

log/jfx_log.cpp

@@ -73,9 +73,9 @@ int AddLogFileSys(const char* file, int& fileIdx)
             std::string dir = name;
             LOG(INFO) << "AddLogFileSys save file = " << dir;
     #ifdef _WIN32
-            if (fopen_s(&g_file, dir.c_str(), "wt+") != 0)
+            if (fopen_s(&g_file, dir.c_str(), "at+") != 0)
     #else
-            if (nullptr == (g_file = fopen(dir.c_str(), "wt+")))
+            if (nullptr == (g_file = fopen(dir.c_str(), "at+")))
     #endif
             {
                 g_file = nullptr;