[英]ElasticSearch file mapping using fscrawler and searching doc by NEST in C#
我使用 fscrawler 2.3-SNAPSHOT 索引了文件夾“/tmp/es”中的文檔。 它將它們映射為:
{
"properties" : {
"attachment" : {
"type" : "binary",
"doc_values": false
},
"attributes" : {
"properties" : {
"group" : {
"type" : "keyword"
},
"owner" : {
"type" : "keyword"
}
}
},
"content" : {
"type" : "text"
},
"file" : {
"properties" : {
"content_type" : {
"type" : "keyword"
},
"filename" : {
"type" : "keyword"
},
"extension" : {
"type" : "keyword"
},
"filesize" : {
"type" : "long"
},
"indexed_chars" : {
"type" : "long"
},
"indexing_date" : {
"type" : "date",
"format" : "dateOptionalTime"
},
"last_modified" : {
"type" : "date",
"format" : "dateOptionalTime"
},
"checksum": {
"type": "keyword"
},
"url" : {
"type" : "keyword",
"index" : true
}
}
},
"object" : {
"type" : "object"
},
"meta" : {
"properties" : {
"author" : {
"type" : "text"
},
"date" : {
"type" : "date",
"format" : "dateOptionalTime"
},
"keywords" : {
"type" : "text"
},
"title" : {
"type" : "text"
},
"language" : {
"type" : "keyword"
}
}
},
"path" : {
"properties" : {
"encoded" : {
"type" : "keyword"
},
"real" : {
"type" : "keyword",
"fields": {
"tree": {
"type" : "text",
"analyzer": "fscrawler_path",
"fielddata": true
}
}
},
"root" : {
"type" : "keyword"
},
"virtual" : {
"type" : "keyword",
"fields": {
"tree": {
"type" : "text",
"analyzer": "fscrawler_path",
"fielddata": true
}
}
}
}
}
}
}
現在,我想在我的 C# 應用程序中使用 NEST 搜索它們,我能夠通過hit.source.content
獲取內容,但無法通過hit.source.filename
獲取文件名...
代碼 :
var response = elasticClient.Search<documents>(s => s
.Index("tanks")
.Type("doc")
.Query(q => q.QueryString(qs => qs.Query(query))));
if (rtxSearchResult.Text != " ")
{
rtxSearchResult.Text = " ";
foreach (var hit in response.Hits)
{
rtxSearchResult.Text = rtxSearchResult.Text + ("Name: " + hit.Source.fileName.ToString()
+ Environment.NewLine
+ "Content: " + hit.Source.content.ToString()
+ Environment.NewLine
+ "URL: " + hit.Source.url.ToString()
+ Environment.NewLine
+ Environment.NewLine);
}
}
以上拋出 NULLException 但在我用hit.Source.url
和hit.Source.filename
注釋行時運行。
Kibana 將文件名字段顯示為file.filename
,將 url 顯示為file.url
,將 content 顯示為content
。
由於文件名嵌套在文件下,我無法檢索它......請幫助卡在這里幾天......
發現錯誤:
我的文檔類是:
Class documents
{
Public string filename { get; set; }
Public string content { get; set; }
Public string url { get; set; }
}
由於 filename 和 url 與file.filename
和file.url
,我們需要另一個帶有 filename 和 url 的類文件。
Class documents
{
Public File file { get; set; }
Public string content { get; set; }
}
Class File
{
Public string filename { get; set; }
Public string url { get; set; }
}
因此我能夠通過hit.Source.file.filename
和hit.Source.file.url
訪問它們。
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