Scan Json create and save.

src/json/ScanJson.h

@@ -0,0 +1,44 @@
+//
+// Created by Krad on 2022/5/11.
+//
+
+#ifndef GUI_SCANJSON_H
+#define GUI_SCANJSON_H
+
+#include <string>
+#include "cJSON.h"
+
+class ScanJson {
+public:
+    ~ScanJson(){
+        if(root)cJSON_Delete(root);
+    }
+    void store(cJSON* json){
+        if(root){
+            cJSON_Delete(root);
+            root = nullptr;
+        }
+        root = json;
+    }
+    void setScanID(const char * id){
+        scanID.clear();
+        scanID.append(id);
+    }
+    void setEmptyScanID(const char * id){
+        emptyScanID.clear();
+        emptyScanID.append(id);
+        setScanID(id);
+    }
+    void save();
+    static ScanJson* Current(){
+        static ScanJson instance;
+        return &instance;
+    }
+private:
+    std::string emptyScanID;
+    std::string scanID;
+    cJSON* root = nullptr;
+};
+
+
+#endif //GUI_SCANJSON_H