前言

前面使用授權部分完成後，就可以開始 API 抓取動作。Oauth2 最難部分已經完成剩下如何使用 Youtube API，API 可以透過 Youtube Data API測試結果在執行 Code部分。

備註 : 這篇主要目的做做看，之後依據情況製作下一章介紹。

Search 搜尋

  • API : https://youtube.googleapis.com/youtube/v3/search
    備註 : method 是 Request parameters 使用下方範例需要把他串成string 才能成功執行。
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    [Authorize]
    [HttpGet("search")]
    public async Task<string> SearchAsync()
    {
        var users = User.Claims.Select(x => new { type = x.Type, value = x.Value });
        string access_token = users.Where(x => x.type == "access_token").Select(x => x.value).FirstOrDefault();
        //取得當前 html 字串
        HttpClient client = new();
        client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", access_token);
        client
            .DefaultRequestHeaders
            .Accept
            .Add(new MediaTypeWithQualityHeaderValue("text/json"));

        string reqUrl = "https://youtube.googleapis.com/youtube/v3/search";
        var request = new HttpRequestMessage(HttpMethod.Get, reqUrl);
        request.Content = new StringContent("", Encoding.UTF8, "text/json");
        var response = await client.SendAsync(request);

        if (response.StatusCode != HttpStatusCode.OK)
        {
            return JsonConvert.SerializeObject(new
            {
                Success = false,
                Message = ""
            });
        }
        var content = await response.Content.ReadAsStringAsync();
        var result = JsonConvert.DeserializeObject(content);
        return JsonConvert.SerializeObject(new
        {
            Success = true,
            Message = result
        });
    }

Subscriptions 訂閱

訂閱部分需要傳入相關參數與 Search 不同於需要使用JSON Request 才能達到效果。

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[Authorize]
[HttpGet("VaildTestInsert")]
public async Task<string> VaildTestInsertAsync()
{
    var users = User.Claims.Select(x => new { type = x.Type, value = x.Value });
    string access_token = users.Where(x => x.type == "access_token").Select(x => x.value).FirstOrDefault();
    //取得當前 html 字串
    HttpClient client = new();
    client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", access_token);
    client
        .DefaultRequestHeaders
        .Accept
        .Add(new MediaTypeWithQualityHeaderValue("application/json"));

    string reqUrl = "https://youtube.googleapis.com/youtube/v3/subscriptions?part=snippet";
    var request = new HttpRequestMessage(HttpMethod.Post, reqUrl);
    var data = new
    {
        snippet = new
        {
            resourceId = new
            {
                kind = "youtube#channel",
                channelId = "UC8vYGLZz142UOeopDvOBmAg"
            }
        }
    };
    request.Content = new StringContent(JsonConvert.SerializeObject(data), Encoding.UTF8, "text/json");
    var response = await client.SendAsync(request);
    var content = await response.Content.ReadAsStringAsync();

    if (response.StatusCode != HttpStatusCode.OK)
    {
        return JsonConvert.SerializeObject(new
        {
            Success = false,
            Message = content.ToString()
        });
    }
    var result = JsonConvert.DeserializeObject(content);
    return JsonConvert.SerializeObject(new
    {
        Success = true,
        Message = result
    });
}

參考文件