利用cJSON库将查询结果转换为JSON格式,假设我们已经从数据库中获取了用户ID和姓名,现在将其转换为JSON对象数组: #include <cjson/cJSON.h> void convertToJson(MYSQL_RES *res) { MYSQL_ROW row; MYSQL_FIELD *field; int num_fields; int i; cJSON *jsonArray = cJSON_CreateArray(); num_fields = m...
26 cJSON_AddItemToObject(pJsonRoot, "subobj", pSubJson); 27 28 char * p = cJSON_Print(pJsonRoot); 29 // else use : 30 // char * p = cJSON_PrintUnformatted(pJsonRoot); 31 if(NULL == p) 32 { 33 //convert json list to string faild, exit 34 //because sub json pSubJson...
16. /// 17. /// <returns></returns> 18. public static ObjType JsonStringToObj<ObjType>(string JsonString) where ObjType : class 19. { 20. ObjType s = JsonConvert.DeserializeObject<ObjType>(JsonString); 21. return s; 22. } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12....
/* cJSON Types: */#definecJSON_Invalid (0)#definecJSON_False (1 << 0)#definecJSON_True (1 << 1)#definecJSON_NULL (1 << 2)#definecJSON_Number (1 << 3)#definecJSON_String (1 << 4)#definecJSON_Array (1 << 5)#definecJSON_Object (1 << 6)#definecJSON_Raw (1 << 7...
importcom.google.gson.Gson;importcom.google.gson.JsonArray; 1. 2. 3. 创建一个方法来转换String为JsonArray 我们可以创建一个方法,接收一个String类型的参数,并将其转换为JsonArray类型。以下是一个示例方法: publicJsonArrayconvertStringToJsonArray(StringjsonString){// 使用Gson库创建一个Gson对象Gsongson=...
How to convert from JSON to C# using the online converter ? Step 1 : Copy the JSON body inside the first code editor Make sure that the JSON string is well formatted. The JSON object should be wrapped with curly braces and should not be escaped by backslashes. ...
出现这个错误一般是操作数的类型与操作符所要求的不匹配,比如(string类型需要<string>头文件): 1.使用系统的类时出错,或者尝试对不正确的类型进行运算符操作 比如: string a="abc"; cout<<3+a; //将一个整数与一个string类型的变量相加,这是+运算不允许的 2.在使用自己定义的类时,尝试使用系统默认的运算符...
How to convert from JSON to C# using the online converter ? Step 1 : Copy the JSON body inside the first code editor Make sure that the JSON string is well formatted. The JSON object should be wrapped with curly braces and should not be escaped by backslashes. ...
Here are the steps to convert Json to Dart classes: 1. Create a Class for each Json Root Node Let's take the below JSON string as example and work with it during the steps: { "Test": { "id":4, "userid":"user_id_value", "users":[ { "id":"2", "name":"Test" }, { ...
std::string到System::String我没有直接的转换,直接使用cstring做中转 System::String到std::string或者std::wstring,可以使用marshal_context进行转换 参考文献: How to: Convert Standard String to System::String - Microsoft Docs c++ - convert a char* to std::string - Stack Overflow ...