Question

所以我正在尝试将索引配置为具有某些映射和过滤器，但每当我尝试创建索引时，我都会收到以下错误：

"[amgindex] failed to create index]; nested: IllegalArgumentException[Custom Analyzer [amgsearch] failed to find filter under name [synonym]"

这是我用来创建索引的代码

public void newIndex() {

  var amgBasic = new CustomAnalyzer {
    Tokenizer = "edgeNGram",
    Filter = new string[] { "lowercase", "worddelimiter", "stemmerEng", "stemmerNl", "stopper", "snowball" } // 
  };

  var amgBasicText = new CustomAnalyzer {
    Tokenizer = "standard",
    Filter = new string[] { "lowercase", "worddelimiter" }
  };

  var amgSearch = new CustomAnalyzer {
    Tokenizer = "whitespace",
    Filter = new string[] { "lowercase", "synonym" }
  };

  var synonmyfilter = new SynonymTokenFilter() {
    Format = "Solr",
    SynonymsPath = "analysis/synonym.txt"
  };


  try {

    var result = client.CreateIndex("amgindex", i => i
                    .Analysis(descriptor => descriptor
                        .Analyzers(bases => bases
                            //.Add("amgBasic", amgBasic)
                            //.Add("amgBasicText", amgBasicText)
                            .Add("amgsearch", amgSearch)
                         )
                    .TokenFilters(c => c.Add("stemmereng", new StemmerTokenFilter() { Language = "english" }))
                    .TokenFilters(c => c.Add("stemmernl", new StemmerTokenFilter() { Language = "english" }))
                    .TokenFilters(c => c.Add("stopper", new StopTokenFilter() { Stopwords = new List<string>() { "_english_", "_dutch_" } }))
                    .TokenFilters(c => c.Add("snowball", new SnowballTokenFilter() { Language = "english" }))
                    .TokenFilters(c => c.Add("worddelimiter ", new WordDelimiterTokenFilter() { }))
                    .TokenFilters(c => c.Add("synonym ", synonmyfilter))

                    )
                    .AddMapping<general_document>(m => m
                        .Properties(o => o
                            .String(p => p.Name(x => x.object_name).IndexAnalyzer("amgSearch"))
                            .String(p => p.Name(x => x.title).IndexAnalyzer("amgSearch"))
                            .String(p => p.Name(x => x.Text).IndexAnalyzer("amgSearch"))
                        )
                    )
                );
    Log.Info("Index created? " + result.Acknowledged);
  } catch (Exception ex) {
    Log.Error("[index-creation] " + ex.Message);
    throw;
  }
}

每次我使用自己的过滤器时，都会弹出错误。任何线索为什么会发生这种情况？

Answer 1

花了很多时间在这之后我发现了!! ：）

在2个过滤器的名称中有一个空格，而这些空间导致了这个问题;

                                       ▼
.TokenFilters(c => c.Add("worddelimiter ", new WordDelimiterTokenFilter() { }))

                                 ▼
.TokenFilters(c => c.Add("synonym ", synonmyfilter))

Elasticsearch nest无法找到过滤器

1 个答案: