C语言借助cJSON生成和解析json数据

Posted 2021-12-16 江州益彤

一、下载cJSON

下载地址：https://github.com/DaveGamble/cJSON

二、

int main(void)

	//先创建空对象
	cJSON *json = cJSON_CreateObject();
	

	//添加数组
	cJSON *array = NULL;
	cJSON_AddItemToObject(json, "getDataFromHandler", array = cJSON_CreateArray());

	//在数组上添加对象
	cJSON *obj = NULL;
	cJSON_AddItemToArray(array, obj = cJSON_CreateObject());
	cJSON_AddItemToObject(obj, "user", cJSON_CreateString("robot"));
	cJSON_AddStringToObject(obj, "opinion", "adopt");

	//在对象上添加键值对
	cJSON_AddItemToArray(array, obj = cJSON_CreateObject());
	cJSON_AddItemToObject(obj, "user", cJSON_CreateString("infodba"));
	cJSON_AddItemToObject(obj, "opinion", cJSON_CreateString("adopt"));

	cJSON_AddItemToArray(array, obj = cJSON_CreateObject());
	cJSON_AddStringToObject(obj, "user", "test");
	cJSON_AddStringToObject(obj, "opinion", "adopt");

	

	//生成json文件
	FILE *fp = fopen("create.json", "w");
	char *buf = cJSON_Print(json);
	printf("%s\\n", buf);

	fwrite(buf, strlen(buf), 1, fp);
	fclose(fp);

	testJSONSend(buf);
	/*test1();*/
	//清理工作
	cJSON_Delete(json);
	
	return 0;