索引增删改
索引增删改自定义分词器
默认的分词器
standard
standard tokenizer：以单词边界进行切分
standard token filter：什么都不做
lowercase token filter：将所有字母转换为小写
stop token filer（默认被禁用）：移除停用词，比如a the it等等
修改分词器的设置
启用english停用词token filter
PUT /my_index { "settings":{ "analysis":{ "analyzer":{ "es_std":{ "type":"standard", "stopwords":"english" } } } } }
GET /my_index/_analyze { "analyzer": "standard", "text": "a dog is in the house" }
GET /my_index/_analyze { "analyzer": "es_std", "text":"a dog is in the house" }
3、定制化自己的分词器
PUT /my_index { "settings":{ "analysis":{ "char_filter":{ "&_to_and":{ "type":"mapping", "mappings":[ "&=> and" ] } }, "filter":{ "my_stopwords":{ "type":"stop", "stopwords":[ "the", "a" ] } }, "analyzer":{ "my_analyzer":{ "type":"custom", "char_filter":[ "html_strip", "&_to_and" ], "tokenizer":"standard", "filter":[ "lowercase", "my_stopwords" ] } } } } }
GET /my_index/_analyze { "text": "tom&jerry are a friend in the house, <a>, HAHA!!", "analyzer": "my_analyzer" }
PUT /my_index/_mapping/my_type { "properties": { "content": { "type": "text", "analyzer": "my_analyzer" } } }