建立一个公司的网站seo关键词排名优化价格

需求：

1. 中文搜索、英文搜索、中英混搜
2. 全拼搜索、首字母搜索、中文+全拼、中文+首字母混搜
3. 简繁搜索
4. 二级搜索（对第一次搜索结果，再进行搜索）

一、ES相关插件

IK分词：

GitHub - medcl/elasticsearch-analysis-ik: The IK Analysis plugin integrates Lucene IK analyzer into elasticsearch, support customized dictionary.

拼音：

https://github.com/medcl/elasticsearch-analysis-pinyin

简繁体：

ehttps://github.com/medcl/elasticsearch-analysis-stconvert

二、什么是 analysis

        analysis分析是 Elasticsearch 在文档发送之前对文档正文执行的过程，以添加到反向索引中（inverted index）。 在将文档添加到索引之前，Elasticsearch 会为每个分析的字段执行许多步骤：

•     Character filtering (字符过滤器): 使用字符过滤器转换字符
•     Breaking text into tokens (把文字转化为标记): 将文本分成一组一个或多个标记
•     Token filtering：使用标记过滤器转换每个标记
•     Token indexing：把这些标记存于索引中

详细介绍：Elasticsearch: analyzer_Elastic 中国社区官方博客的博客-CSDN博客_elasticsearch analyzer如果大家之前看过我写的文章“开始使用Elasticsearch （3）”，在文章的最后部分写了有关于analyzer的有关介绍。在今天的文章中，我们来进一步了解analyzer。 analyzer执行将输入字符流分解为token的过程，它一般发生在两个场合：在indexing的时候，也即在建立索引的时候在searching的时候，也即在搜索时，分析需要搜索的词语什么是analysis...https://blog.csdn.net/UbuntuTouch/article/details/100392478

三、索引模板

PUT /_template/test_template
{"index_patterns": ["test-*"],"aliases": {"test_read": {}},"settings": {"index": {"max_result_window": "100000","refresh_interval": "5s","number_of_shards": "5","translog": {"flush_threshold_size": "1024mb","sync_interval": "30s","durability": "async"},"number_of_replicas": "1"},"analysis": {"char_filter": {"tsconvert": {"type": "stconvert","convert_type": "t2s"}},"analyzer": {"ik_t2s_pinyin_analyzer": {"type": "custom","char_filter": ["tsconvert"],"tokenizer": "ik_max_word","filter": ["pinyin_filter","lowercase"]},"stand_t2s_pinyin_analyzer": {"type": "custom","char_filter": ["tsconvert"],"tokenizer": "standard","filter": ["pinyin_filter","lowercase"]},"ik_t2s_analyzer": {"type": "custom","char_filter": ["tsconvert"],"tokenizer": "ik_max_word","filter": ["lowercase"]},"stand_t2s_analyzer": {"type": "custom","char_filter": ["tsconvert"],"tokenizer": "standard","filter": ["lowercase"]},"ik_pinyin_analyzer": {"type": "custom","tokenizer": "ik_max_word","filter": ["pinyin_filter","lowercase"]},"stand_pinyin_analyzer": {"type": "custom","tokenizer": "standard","filter": ["pinyin_filter","lowercase"]},"keyword_t2s_pinyin_analyzer": {"filter": ["pinyin_filter","lowercase"],"char_filter": ["tsconvert"],"type": "custom","tokenizer": "keyword"},"keyword_pinyin_analyzer": {"filter": ["pinyin_filter","lowercase"],"type": "custom","tokenizer": "keyword"}},"filter": {"pinyin_first_letter_and_full_pinyin_filter": {"type": "pinyin","keep_first_letter": true,"keep_separate_first_letter": false,"keep_full_pinyin": false,"keep_joined_full_pinyin": true,"keep_none_chinese": true,"none_chinese_pinyin_tokenize": false,"keep_none_chinese_in_joined_full_pinyin": true,"keep_original": false,"limit_first_letter_length": 1000,"lowercase": true,"trim_whitespace": true,"remove_duplicated_term": true}}}},"mappings": {"properties": {"name": {"index_phrases": true,"analyzer": "ik_max_word","index": true,"type": "text","fields": {"keyword": {"ignore_above": 256,"type": "keyword"},"stand": {"analyzer": "standard","type": "text"},"STPA": {"type": "text","analyzer": "stand_t2s_pinyin_analyzer"},"ITPA": {"type": "text","analyzer": "ik_t2s_pinyin_analyzer"}}},"desc": {"index_phrases": true,"analyzer": "ik_max_word","index": true,"type": "text","fields": {"keyword": {"ignore_above": 256,"type": "keyword"},"stand": {"analyzer": "standard","type": "text"},"STPA": {"type": "text","analyzer": "stand_t2s_pinyin_analyzer"},"ITPA": {"type": "text","analyzer": "ik_t2s_pinyin_analyzer"}}},"abstr": {"index_phrases": true,"analyzer": "ik_max_word","index": true,"type": "text","fields": {"keyword": {"ignore_above": 256,"type": "keyword"},"stand": {"analyzer": "standard","type": "text"},"STPA": {"type": "text","analyzer": "stand_t2s_pinyin_analyzer"},"ITPA": {"type": "text","analyzer": "ik_t2s_pinyin_analyzer"}}}}}
}

四、DSL语句

GET /test_read/_search
{"from": 0,"size": 10,"terminate_after": 100000,"query": {"bool": {"must": [{"query_string": {"query": "bj天安门 OR 测试","fields": ["name.ITPA"],"type": "phrase","default_operator": "and"}}],"adjust_pure_negative": true,"boost": 1}},"post_filter": {"bool": {"must": [{"match": {"name": "天安门"}}]}},"highlight": {"fragment_size": 1000,"pre_tags": ["<span style=\"color:red;background:yellow;\">"],"post_tags": ["</span>"],"fields": {"name.stand": {},"desc.stand": {},"abstr.stand": {},"name.IPA": {},"desc.IPA": {},"abstr.IPA": {},"name.ITPA": {},"desc.ITPA": {},"abstr.ITPA": {}}}
}

post_filter：后过滤器 | Elasticsearch: 权威指南 | Elastic

PS：post_filter实现二次搜索功能，post_filter无法使用es高亮功能，需要自己通过代码进行手动标记高亮；根据上面的DSL语句，可写出对应的代码啦~

拼音插件配置：

• keep_first_letter:这个参数会将词的第一个字母全部拼起来.例如:刘德华->ldh.默认为:true
• keep_separate_first_letter:这个会将第一个字母一个个分开.例如:刘德华->l,d,h.默认为:flase.如果开启,可能导致查询结果太过于模糊,准确率太低.
• limit_first_letter_length:设置最大keep_first_letter结果的长度,默认为:16
• keep_full_pinyin:如果打开,它将保存词的全拼,并按字分开保存.例如:刘德华> [liu,de,hua],默认为:true
• keep_joined_full_pinyin:如果打开将保存词的全拼.例如:刘德华> [liudehua],默认为:false
• keep_none_chinese:将非中文字母或数字保留在结果中.默认为:true
• keep_none_chinese_together:保证非中文在一起.默认为: true, 例如: DJ音乐家 -> DJ,yin,yue,jia, 如果设置为:false, 例如: DJ音乐家 -> D,J,yin,yue,jia, 注意: keep_none_chinese应该先开启.
• keep_none_chinese_in_first_letter:将非中文字母保留在首字母中.例如: 刘德华AT2016->ldhat2016, 默认为:true
• keep_none_chinese_in_joined_full_pinyin:将非中文字母保留为完整拼音. 例如: 刘德华2016->liudehua2016, 默认为: false
• none_chinese_pinyin_tokenize:如果他们是拼音,切分非中文成单独的拼音项. 默认为:true,例如: liudehuaalibaba13zhuanghan -> liu,de,hua,a,li,ba,ba,13,zhuang,han, 注意: keep_none_chinese和keep_none_chinese_together需要先开启.
• keep_original:是否保持原词.默认为:false
• lowercase:小写非中文字母.默认为:true
• trim_whitespace:去掉空格.默认为:true
• remove_duplicated_term:保存索引时删除重复的词语.例如: de的>de, 默认为: false, 注意:开启可能会影响位置相关的查询.
• ignore_pinyin_offset:在6.0之后,严格限制偏移量,不允许使用重叠的标记.使用此参数时,忽略偏移量将允许使用重叠的标记.请注意,所有与位置相关的查询或突出显示都将变为错误,您应使用多个字段并为不同的字段指定不同的设置查询目的.如果需要偏移量,请将其设置为false。默认值:true