elasticsearch中文分词插件IK使用

[attach]334[/attach] ES支持中文的前提是安装正确的分词组件,比如elasticsearch-analysis-ik。 版本支持如下: [attach]335[/attach]

安装

# git clone https://github.com/medcl/elasticsearch-analysis-ik.git --depth 1
# cd elasticsearch-analysis-ik/
# mvn package
# unzip ./target/releases/elasticsearch-analysis-ik-1.2.9.zip
OR
# git clone https://github.com/medcl/elasticsearch-analysis-ik
# cd elasticsearch-analysis-ik
# mvn compile
# mvn package
# plugin --install analysis-ik --url file:///#{project_path}/elasticsearch-analysis-ik/target/releases/elasticsearch-analysis-ik-1.3.0.zip
zip解压得到5个jar包:
    []- elasticsearch-analysis-ik-1.2.9.jar[/][]- httpclient-4.3.5.jar[/][]- httpcore-4.3.2.jar[/][]- commons-logging-1.1.3.jar[/][]- commons-codec-1.6.jar[/]
  返回ES目录,新建路径./plugins/analysis-ik并把上述jar包全部移进去。 第二步,把elasticsearch-analysis-ik/config/ik文件夹(IK自带的词典)复制到ES目录的./config路径下。 第三步,在./config/elasticsearch.yml文件的最后加上:
index:
  analysis:
    analyzer:
      ik:
          alias: [news_analyzer_ik,ik_analyzer]
          type: org.elasticsearch.index.analysis.IkAnalyzerProvider

index.analysis.analyzer.default.type : "ik"
OR
[b]index.analysis.analyzer.ik.type : "ik"[/b]
注意配置分词组件必须在创建索引之前,否则是无效的。

Example

1.create a index
# curl -XPUT http://localhost:9200/index
2.create a mapping
# curl -XPUT http://localhost:9200/index
create a mapping
curl -XPOST http://localhost:9200/index/fulltext/_mapping -d'
{
    "fulltext": {
             "_all": {
            "indexAnalyzer": "ik",
            "searchAnalyzer": "ik",
            "term_vector": "no",
            "store": "false"
        },
        "properties": {
            "content": {
                "type": "string",
                "store": "no",
                "term_vector": "with_positions_offsets",
                "indexAnalyzer": "ik",
                "searchAnalyzer": "ik",
                "include_in_all": "true",
                "boost": 8
            }
        }
    }
}'
3.index some docs
# curl -XPOST http://localhost:9200/index/fulltext/1 -d'
{"content":"美国留给伊拉克的是个烂摊子吗"}
'
# curl -XPOST http://localhost:9200/index/fulltext/2 -d'
{"content":"公安部:各地校车将享最高路权"}
'
# curl -XPOST http://localhost:9200/index/fulltext/3 -d'
{"content":"中韩渔警冲突调查:韩警平均每天扣1艘中国渔船"}
' 
# curl -XPOST http://localhost:9200/index/fulltext/4 -d'
{"content":"中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"}
'
4.query with highlighting
# curl -XPOST http://localhost:9200/index/fulltext/_search  -d'
{
    "query" : { "term" : { "content" : "中国" }},
    "highlight" : {
        "pre_tags" : ["", ""],
        "post_tags" : ["", ""],
        "fields" : {
            "content" : {}
        }
    }
}
'
Result
{
    "took": 14,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "failed": 0
    },
    "hits": {
        "total": 2,
        "max_score": 2,
        "hits": [
            {
                "_index": "index",
                "_type": "fulltext",
                "_id": "4",
                "_score": 2,
                "_source": {
                    "content": "中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"
                },
                "highlight": {
                    "content": [
                        "中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首 "
                    ]
                }
            },
            {
                "_index": "index",
                "_type": "fulltext",
                "_id": "3",
                "_score": 2,
                "_source": {
                    "content": "中韩渔警冲突调查:韩警平均每天扣1艘中国渔船"
                },
                "highlight": {
                    "content": [
                        "均每天扣1艘中国渔船 "
                    ]
                }
            }
        ]
    }
}

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