我正在ES 2.3.3上构建Elastic Search索引,并且已定义以下字段,以以下方式具有一个子字段
"properties": {
"content": {
"type": "string",
"index_options": "offsets",
"store": "yes",
"fields": {
"base": {
"type": "string",
"analyzer": "base_analyzer"
},
}
}
我已经在设置中定义了
base_analyzer
,以便去除HTML内容"base_analyzer":
{
"tokenizer": "standard",
"char_filter": [ "html_strip"]
}
我想做的是执行搜索,并在
content.base
(从HTML标记中剥离出的content
字段)中突出显示搜索词,然后按以下方式进行操作"query": {
{"match": {"content.base": {"query": "this is what I'm searching"}}},
},
"highlight": {
"fields": {
"content.base": {}
}
}
问题是,如果我在
_search
中使用以下查询,仍会在突出显示的字段中获得HTML标记。你知道为什么会这样吗? 最佳答案
现在,如果您想在索引和按原样存储内容之前完全去除html,则可以使用mapper附件插件-在其中定义映射时,可以将content_type归类为“html”。没有html标签,您将可以突出显示。
映射器附件在许多事情上很有用,尤其是当您处理多种文档类型时,但最值得注意的是-我相信仅使用此附件即可剥离html标签就足够了(您无法使用html_strip char过滤器来做到这一点)。
不过只是一个警告-不会存储html标记。因此,如果您确实需要这些标签,我建议您定义另一个字段来存储原始内容。另一个注意事项:您不能为映射器附件文档指定多字段,因此您需要将其存储在映射器附件文档之外。请参阅下面的工作示例。
您需要生成此映射:
{
"html5-es" : {
"aliases" : { },
"mappings" : {
"document" : {
"properties" : {
"delete" : {
"type" : "boolean"
},
"file" : {
"type" : "attachment",
"fields" : {
"content" : {
"type" : "string",
"store" : true,
"term_vector" : "with_positions_offsets",
"analyzer" : "autocomplete"
},
"author" : {
"type" : "string",
"store" : true,
"term_vector" : "with_positions_offsets"
},
"title" : {
"type" : "string",
"store" : true,
"term_vector" : "with_positions_offsets",
"analyzer" : "autocomplete"
},
"name" : {
"type" : "string"
},
"date" : {
"type" : "date",
"format" : "strict_date_optional_time||epoch_millis"
},
"keywords" : {
"type" : "string"
},
"content_type" : {
"type" : "string"
},
"content_length" : {
"type" : "integer"
},
"language" : {
"type" : "string"
}
}
},
"hash_id" : {
"type" : "string"
},
"path" : {
"type" : "string"
},
"raw_content" : {
"type" : "string",
"store" : true,
"term_vector" : "with_positions_offsets",
"analyzer" : "raw"
},
"title" : {
"type" : "string"
}
}
}
},
"settings" : { //insert your own settings here },
"warmers" : { }
}
}
这样,在NEST中,我将这样组装内容:
Attachment attachment = new Attachment();
attachment.Content = Convert.ToBase64String(File.ReadAllBytes("path/to/document"));
attachment.ContentType = "html";
Document document = new Document();
document.File = attachment;
document.RawContent = InsertRawContentFromString(originalText);
我已经在Sense中进行了测试-结果如下:
"file": {
"_content": "PGh0bWwgeG1sbnM6TWFkQ2FwPSJodHRwOi8vd3d3Lm1hZGNhcHNvZnR3YXJlLmNvbS9TY2hlbWFzL01hZENhcC54c2QiPg0KICA8aGVhZCAvPg0KICA8Ym9keT4NCiAgICA8aDE+VG9waWMxMDwvaDE+DQogICAgPHA+RGVsZXRlIHRoaXMgdGV4dCBhbmQgcmVwbGFjZSBpdCB3aXRoIHlvdXIgb3duIGNvbnRlbnQuIENoZWNrIHlvdXIgbWFpbGJveC48L3A+DQogICAgPHA+wqA8L3A+DQogICAgPHA+YXNkZjwvcD4NCiAgICA8cD7CoDwvcD4NCiAgICA8cD4xMDwvcD4NCiAgICA8cD7CoDwvcD4NCiAgICA8cD5MYXZlbmRlci48L3A+DQogICAgPHA+wqA8L3A+DQogICAgPHA+MTAvNiAxMjowMzwvcD4NCiAgICA8cD7CoDwvcD4NCiAgICA8cD41IDA5PC9wPg0KICAgIDxwPsKgPC9wPg0KICAgIDxwPjExIDQ3PC9wPg0KICAgIDxwPsKgPC9wPg0KICAgIDxwPkhhbGxvd2VlbiBpcyBpbiBPY3RvYmVyLjwvcD4NCiAgICA8cD7CoDwvcD4NCiAgICA8cD5qb2c8L3A+DQogIDwvYm9keT4NCjwvaHRtbD4=",
"_content_length": 0,
"_content_type": "html",
"_date": "0001-01-01T00:00:00",
"_title": "Topic10"
},
"delete": false,
"raw_content": "<h1>Topic10</h1><p>Delete this text and replace it with your own content. Check your mailbox.</p><p> </p><p>asdf</p><p> </p><p>10</p><p> </p><p>Lavender.</p><p> </p><p>10/6 12:03</p><p> </p><p>5 09</p><p> </p><p>11 47</p><p> </p><p>Halloween is in October.</p><p> </p><p>jog</p>"
},
"highlight": {
"file.content": [
"\n <em>Topic10</em>\n\n Delete this text and replace it with your own content. Check your mailbox.\n\n \n\n asdf\n\n \n\n 10\n\n \n\n Lavender.\n\n \n\n 10/6 12:03\n\n \n\n 5 09\n\n \n\n 11 47\n\n \n\n Halloween is in October.\n\n \n\n jog\n\n "
]
}
关于elasticsearch - 剥离HTML标签后ElasticSearch突出显示,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/38348242/