Unity Post请求

/// <summary>
    /// Post请求
    /// </summary>
    /// <param name="requestBody"></param>
    /// <param name="url"></param>
    /// <returns></returns>
    public static IEnumerator PostHttpRequest(object requestBody,string url)
    {
        string body = JsonMapper.ToJson(requestBody);
        byte[] rawData = Encoding.UTF8.GetBytes(body);
        WWWForm form = new WWWForm();
        System.Collections.Hashtable headers = new System.Collections.Hashtable();
        headers["Content-Type"] = "application/json";
        headers["Accept"] = "application/json";
        WWW www = new WWW(url, rawData, headers);
        yield return www;
        Debug.Log("返回值：" + www.text);
    }