stanford-nlp - 如何从dotnet连接Stanford Core Server

您可以通过.NET HTTPClient或其他等效的.NET调用连接到Web端点。您需要设置NLP端点，NLP服务器的属性以及要分析的文本内容。有关Stanford NLP Server page的其他信息，以及根据您要运行的NLP管道可以设置哪些属性的信息。

以下代码来自 .NET Core控制台应用程序，使用以下调用返回命名实体识别，依赖关系解析器和OpenIE结果。

仅供参考我曾经在某些情况下将我的NLP端点从睡眠模式唤醒笔记本电脑时无法正常工作（Windows 10上的Docker for Windows 17.12）。重置Docker为我做了诀窍......如果你无法浏览到http://localhost:9000网站，那么端点肯定也无法工作！


    using System.Collections.Generic;
    using System.Threading.Tasks;
    using System.Net.Http;

    // String to process
    string s = "This is the sentence to provide to NLP."

    // Set up the endpoint
    string nlpBaseAddress = "http://localhost:9000"

    // Create the query string params for NLPCore
    string jsonOptions = "{\"annotators\": \"ner, depparse, openie\", \"outputformat\": \"json\"}";
    Dictionary qstringProperties = new Dictionary();
    qstringProperties.Add("properties", jsonOptions);
    string qString = ToQueryString(qstringProperties);

    // Add the query string to the base address
    string urlPlusQuery = nlpBaseAddress + qString;

    // Create the content to submit
    var content = new StringContent(s);
    content.Headers.Clear();
    content.Headers.Add("Content-Type", "application/x-www-form-urlencoded");

    // Submit for processing
    var client = new HttpClient();

    HttpResponseMessage response;
    Task tResponse = client.PostAsync(urlPlusQuery, content);
    tResponse.Wait();
    response = tResponse.Result;

    // Check the response
    if (response.StatusCode != System.Net.HttpStatusCode.OK)
    {
       // Do something better than throwing an app exception here!
       throw new ApplicationException("Subject-Object tuple extraction returned an unexpected response from the subject-object service");
    }

    Task rString = response.Content.ReadAsStringAsync();
    rString.Wait();
    string jsonResult = rString.Result;

此调用中使用的实用程序函数用于生成QueryString：

        

    private string ToQueryString(Dictionary nvc)
            {
                System.Text.StringBuilder sb = new System.Text.StringBuilder("?");

                bool first = true;

                foreach (KeyValuePair key in nvc)
                {
                    // CHeck if this is the first value
                    if (!first)
                    {
                        sb.Append("&");
                    }

                    sb.AppendFormat("{0}={1}", Uri.EscapeDataString(key.Key), Uri.EscapeDataString(key.Value));

                    first = false;
                }

                return sb.ToString();
            }

如何从dotnet连接Stanford Core Server

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