易盾是网易推出的反垃圾云服务，最近准备试用一下，但发现api文档中只提供了Java, Python, PHP的示例代码，却没有C#的示例代码，于是参照用C#实现了一下。

Java中用HashMap构建公共参数与私有参数，C#中则可以用Dictionary：

var parameters = new Dictionary
     
      ();//公共参数parameters.Add("secretId", "{secretId}");parameters.Add("businessId", "{businessId}");parameters.Add("version", "v2");parameters.Add("timestamp", CurrentTimeMillis().ToString());parameters.Add("nonce", new Random().Next().ToString());//私有参数parameters.Add("dataId", Guid.NewGuid().ToString());parameters.Add("content", content);parameters.Add("dataOpType", "1");parameters.Add("ip", ip);
     

Java中用 System.currentTimeMillis() 生成 timestamp，C#中没有直接的对应实现，只能另外实现一个（来自）：

private long CurrentTimeMillis(){    return (long)(DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds;}

对于生成签名的操作，Java中稍显复杂，C#中用Lambda一气呵成：

private string GenerateSignature(Dictionary
     
       parameters, string secretKey){    var signatueString = string.Join(string.Empty,        parameters.OrderBy(p => p.Key).Select(p => p.Key + p.Value))        + secretKey;    return string.Join(string.Empty,        MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(signatueString)).Select(s => s.ToString("x2")));}
     

对于http请求操作，Java中有HttpClient，C#中也有：

var response = await _httpClient.PostAsync("/v2/text/check",     new FormUrlEncodedContent(parameters));

对于响应结果解析，Java中有JsonParser，C#中有Json.NET：

var responseText = await response.Content.ReadAsStringAsync();var jObject = JObject.Parse(responseText);var statusCode = jObject["code"].Value
     
      ();if (statusCode == 200){    var action = jObject["result"]["action"].Value
      
       ();    return action == 1;}else{    return false;}
      
     

完整实现代码如下：

public class YiDunCheckSpam : ICheckSpam{    private const string BASE_ADDRESS = "https://api.aq.163.com/";    private readonly HttpClient _httpClient;    public YiDunCheckSpam()    {        _httpClient = new HttpClient();        _httpClient.BaseAddress = new Uri(BASE_ADDRESS);    }    public async Task
     
       IsSpamPost(string title, string content, string author, string ip)    {        var parameters = new Dictionary
      
       ();        //公共参数        parameters.Add("secretId", "{secretId}");        parameters.Add("businessId", "{businessId}");        parameters.Add("version", "v2");        parameters.Add("timestamp", CurrentTimeMillis().ToString());        parameters.Add("nonce", new Random().Next().ToString());        //私有参数        parameters.Add("dataId", Guid.NewGuid().ToString());        parameters.Add("content", content);        parameters.Add("dataOpType", "1");        parameters.Add("ip", ip);        parameters.Add("title", title);        parameters.Add("nickname", author);        var secretKey = "{secretKey}";        var signature = GenerateSignature(parameters, secretKey);        parameters.Add("signature", signature);        var response = await _httpClient.PostAsync("/v2/text/check",            new FormUrlEncodedContent(parameters));        var responseText = await response.Content.ReadAsStringAsync();        var jObject = JObject.Parse(responseText);        var statusCode = jObject["code"].Value
       
        ();        if (statusCode == 200)        {            var action = jObject["result"]["action"].Value
        
         ();            return action > 1;        }        else        {            return false;        }    }    private string GenerateSignature(Dictionary
         
           parameters, string secretKey)    {        var signatueString = string.Join(string.Empty,            parameters.OrderBy(p => p.Key).Select(p => p.Key + p.Value))            + secretKey;        return string.Join(string.Empty,            MD5.Create().ComputeHash(Encoding.UTF8.GetBytes(signatueString)).Select(s => s.ToString("x2")));    }    private long CurrentTimeMillis()    {        return (long)(DateTime.UtcNow - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds;    }}