如何从dotnet连接Stanford Core Server

1 回答

• 0

  您可以通过.NET HTTPClient或其他等效的.NET调用连接到Web endpoints . 您需要设置NLP endpoints ，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 console application ，使用以下调用返回命名实体识别，依赖性分析器和OpenIE结果 .

  当我从睡眠模式唤醒笔记本电脑时（在Win10上使用Docker for Windows 17.12之前），我可以正常工作 . 重置Docker为我做了诀窍......如果你无法浏览到你的http://localhost:9000网站，那么 endpoints 肯定也无法正常工作！

  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;
  

  在此调用中使用的实用程序函数生成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();
              }
  

  回复于 2024-05-02T13:14:20+08:00