使用cJSON产生json字串

• 下载

https://github.com/DaveGamble/cJSON

• 范例

#define BUFFER_SIZE 512

void sendCommand(const char* command, char* function)
{
    cJSON* root = cJSON_CreateObject();
    cJSON_AddItemToObject(root, "command", cJSON_CreateString("function"));

    cJSON* temp = cJSON_CreateObject();
    cJSON_AddItemToObject(root, "content", temp);
    cJSON_AddStringToObject(temp, "name", function);

    char itemName[BUFFER_SIZE] = {0};
    int i = 0;

    memset(itemName, 0, BUFFER_SIZE);
    sprintf(itemName, "bool%d", i);
    cJSON_AddBoolToObject(temp, itemName, true);
    i++;

    memset(itemName, 0, BUFFER_SIZE);
    sprintf(itemName, "int%d", i);
    cJSON_AddNumberToObject(temp, itemName, 1);
    i++;

    memset(itemName, 0, BUFFER_SIZE);
    sprintf(itemName, "double%d", i);
    cJSON_AddBoolToObject(temp, itemName, 1.5);
    i++;

    memset(itemName, 0, BUFFER_SIZE);
    sprintf(itemName, "string%d", i);
    cJSON_AddStringToObject(temp, itemName, urlstr);
    i++;

    memset(itemName, 0, BUFFER_SIZE);
    sprintf(itemName, "null%d", i);
    cJSON_AddStringToObject(temp, itemName, "");
    i++;

    //输出
    DEBUG_TEXT(cJSON_Print(root));

    cJSON_Delete(root);
}

• 结果

{
	"command":	"function",
	"content":	{
		"name":	"openDocument",
		"bool0":	false,
        "int1":	1,
        "double2":	2.5,
		"string3":	"",
        "null4": ""
	}
}