使用c#接入华为云-内容审核

背景

内容审核（Content Moderation），是基于图像、文本、音视频的检测技术，可自动检测涉黄、涉政涉暴、涉政敏感人物、图文违规等内容，对用户上传的图片、文字、音视频进行内容审核，以满足上传要求，帮助客户降低业务违规风险。

一般涉及到TO C的很多业务都会涉及到。

内容审核-图像

图像内容审核，利用深度神经网络模型对图片内容进行检测，准确识别图像中的涉政敏感人物、暴恐元素、涉黄内容等，帮助业务规避违规风险。

内容审核-文本

文本内容审核，采用人工智能文本检测技术有效识别涉黄、涉政、广告、辱骂、违禁品和灌水文本内容，提供定制化的文本敏感内容审核方案。

需求

最近因为项目中需要接入该功能，因为公司是使用华为云，所以特地找了华为云的内容审核服务。本来想着有sdk应该是三下五乘二的事情，结果看了文档

没错人家不和你玩.net,没办法只能是退而求其次，使用它的http api。

主要代码实现

获取token

/// <summary>
 /// 
 /// </summary>
 /// <param name="username"></param>
 /// <param name="password"></param>
 /// <param name="domainName"></param>
 /// <param name="projectName"></param>
 /// <returns></returns>
 private static String getToken(String username, String password, String domainName, String projectName)
 {
 var client = new RestClient("https://iam.myhuaweicloud.com/v3/auth/tokens");
 client.Timeout = -1;
 var request = new RestRequest(Method.POST);
 request.AddHeader("Content-Type", "application/json");
 var body = "{\"auth\":{\"identity\":{\"methods\":[\"password\"],\"password\":{\"user\":{\"name\":\"" + username + "\",\"password\":\"" + password + "\",\"domain\":{\"name\":\"" + domainName + "\"}}}},\"scope\":{\"project\":{\"name\":\"" + projectName + "\"}}}}";
 request.AddParameter("application/json", body, ParameterType.RequestBody);
 ServicePointManager.ServerCertificateValidationCallback = ((a1, b1, c1, d1) => { return true; });
 ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12 | (SecurityProtocolType)3072;
 IRestResponse response = client.Execute(request);
if (response.StatusCode == HttpStatusCode.Created)
 {
return response.Headers.FirstOrDefault(o => o.Name == "X-Subject-Token")?.Value.ToString()??;
 }
else
 {
 Console.WriteLine("err:" + response.Content);
 }
return ;
 }
           

内容审核

private static bool requestModerationTextContentBase64(String token, String textModeration, String projectName)
 {
 var client = new RestClient("https://moderation."+ projectName + ".myhuaweicloud.com/v1.0/moderation/text");
 client.Timeout = -1;
 var request = new RestRequest(Method.POST);
 request.AddHeader("X-Auth-Token", token);
 request.AddHeader("Content-Type", "application/json");

 ModerationTextContentBody model = new ModerationTextContentBody();
 List<string> list = new List<string>
 {
"ad",
"politics",
"abuse",
"porn",
"contraband",
"flood"
 };
 model.categories.AddRange(list);
 model.items.Add(new ItemsItem() { type= "content", text= textModeration });

 var body = JsonConvert.SerializeObject(model);
 //"{\"categories\":[\"ad\",\"politics\",\"abuse\",\"porn\",\"contraband\",\"flood\"],\"items\":[{\"text\":\""+ textModeration + "\",\"type\":\"content\"}]}";




 request.AddParameter("application/json", body, ParameterType.RequestBody);
 IRestResponse response = client.Execute(request);
 Console.WriteLine(response.Content);
if (response.StatusCode == HttpStatusCode.OK)
 {
 var r= JsonConvert.DeserializeObject<ResponseModerationTextContent>(response.Content); 
if(r.result.suggestion== "pass")
 {
return true;
 }
 }
else
 {
 Console.WriteLine("err:" + response.Content);
 }
return false;
 }
           

调用

String token = getToken(username, password, domainName, projectName);
 // Console.WriteLine(token);
 string textModeration = @"呜呜呜呜呜";


 var result= requestModerationTextContentBase64(token, textModeration, projectName);