• Kafka:ZK+Kafka+Spark Streaming集群环境搭建(十九)ES6.2.2 安装Ik中文分词器


    注: elasticsearch 版本6.2.2

    • 1)集群模式,则每个节点都需要安装ik分词,安装插件完毕后需要重启服务,创建mapping前如果有机器未安装分词,则可能该索引可能为RED,需要删除后重建。
      •   
        域名            ip
        master         192.168.0.120
        slave1         192.168.0.121
        slave2         192.168.0.122
    • 2)Elasticsearch 内置的分词器对中文不友好,会把中文分成单个字来进行全文检索,不能达到想要的结果,在全文检索及新词发展如此快的互联网时代,IK可以进行友好的分词及自定义分词。
    • 3)IK Analyzer是一个开源的,基于java语言开发的轻量级的中文分词工具包。从2006年12月推出1.0版,目前支持最新版本的ES6.X版本。
    • 4)IK 带有两个分词器:
      •   ik_max_word :会将文本做最细粒度的拆分;尽可能多的拆分出词语
      •   ik_smart:会做最粗粒度的拆分;已被分出的词语将不会再次被其它词语占有
    • 5)本篇采用下载IK中文分词器源码后,使用eclipse编译源码方式得到IK分词器安装包,因为以后如果要进行修改IK分词器可以修改完源码自己进行打包安装。

    第一步:下载IK中文分词器源代码

    在github中搜索ik,找到"medcl/elasticsearch-analysis-ik",并找到https://github.com/medcl/elasticsearch-analysis-ik/releases,选择自己需要的版本:

    或者


    如上图所示,选择和elsticsearch 匹配的版本,并下载zip包。

    第二步:解压下载的zip包并使用ecplise打开

    ①解压elasticsearch-analysis-ik-6.2.2.zip

    ②打开eclispe导入 maven项目

    下一步

    ③导入后,使用maven build...编译jar包

    弹出编辑框:

    点击“Run”执行

    完成后,在target文件夹上右键 选择 Refresh,如图所示:

    第三步:分别上传到ES的服务器并分别解压安装

    把编译好的jar包上传到master服务器上,

    执行命令安装:

    [spark@master ~]$ cd /opt/
    [spark@master opt]$ unzip elasticsearch-analysis-ik-6.2.2.zip -d /opt/elasticsearch-6.2.2/plugins/
    Archive:  elasticsearch-analysis-ik-6.2.2.zip
       creating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/plugin-descriptor.properties  
       creating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/extra_main.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/extra_single_word.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/extra_single_word_full.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/extra_single_word_low_freq.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/extra_stopword.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/IKAnalyzer.cfg.xml  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/main.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/preposition.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/quantifier.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/stopword.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/suffix.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/config/surname.dic  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/elasticsearch-analysis-ik-6.2.2.jar  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/httpclient-4.5.2.jar  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/httpcore-4.4.4.jar  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/commons-logging-1.2.jar  
      inflating: /opt/elasticsearch-6.2.2/plugins/elasticsearch/commons-codec-1.9.jar  
    [spark@master opt]$ cd /opt/elasticsearch-6.2.2/plugins/
    [spark@master plugins]$ mv elasticsearch/ ik/

    slave1,slave2同样安装,这里省略。。

    master,slave1,slave2三台服务器安装完成后,重启elasticsearch 即可加载ik分词器。

    第四步:测试

    1) 删除、创建索引:

    curl -Xdelete "http://192.168.0.120:9200/index"
    
    curl -Xput "http://192.168.0.120:9200/index"

    2)使用index索引创建mapping(对字段‘content’进行中文分词):

    curl -XPOST "http://192.168.0.120:9200/index/fulltext/_mapping" -H 'Content-Type: application/json' -d'
    {
            "properties": {
                "content": {
                    "type": "text",
                    "analyzer": "ik_max_word",
                    "search_analyzer": "ik_max_word"
                }
            }
        
    }'

    3)先添加4条记录:

    curl -XPOST "http://192.168.0.120:9200/index/fulltext/1" -H 'Content-Type: application/json' -d'
    {"content":"美国留给伊拉克的是个烂摊子吗"}'
    
    curl -XPOST "http://192.168.0.120:9200/index/fulltext/2" -H 'Content-Type: application/json' -d'
    {"content":"公安部:各地校车将享最高路权"}'
    
    curl -XPOST "http://192.168.0.120:9200/index/fulltext/3" -H 'Content-Type: application/json' -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://192.168.0.120:9200/index/fulltext/4" -H 'Content-Type: application/json' -d'
    {"content":"中国驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"}'

    4)执行统计:

    curl -XPOST "http://192.168.0.120:9200/index/fulltext/_search" -H 'Content-Type: application/json' -d'
    {
        "query" : { "match" : { "content" : "中国" }},
        "highlight" : {
            "pre_tags" : ["<tag1>", "<tag2>"],
            "post_tags" : ["</tag1>", "</tag2>"],
            "fields" : {
                "content" : {}
            }
        }
    }'

    返回结果:

    {
      "took": 133,
      "timed_out": false,
      "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
      },
      "hits": {
        "total": 2,
        "max_score": 0.6489038,
        "hits": [
          {
            "_index": "index",
            "_type": "fulltext",
            "_id": "4",
            "_score": 0.6489038,
            "_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": [
                "<tag1>中国</tag1>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": 0.2876821,
            "_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": [
                "中韩渔警冲突调查:韩警平均每天扣1艘<tag1>中国</tag1>渔船"
              ]
            }
          }
        ]
      }
    }

    5)再添加3条记录:

    curl -XPOST "http://192.168.0.120:9200/index/fulltext/5" -H 'Content-Type: application/json' -d'
    {"content":"俄侦委:俄一辆卡车渡河时翻车 致2名中国游客遇难"}'
     
    curl -XPOST "http://192.168.0.120:9200/index/fulltext/6" -H 'Content-Type: application/json' -d'
    {"content":"韩国银行面向中国留学生推出微信支付服务"}'
    
    curl -XPOST "http://192.168.0.120:9200/index/fulltext/7" -H 'Content-Type: application/json' -d'
    {"content":"印媒:中国东北“锈带”在困境中反击"}'

    6)重新执行统计:

    curl -XPOST "http://192.168.0.120:9200/index/fulltext/_search" -H 'Content-Type: application/json' -d'
    {
        "query" : { "match" : { "content" : "中国" }},
        "highlight" : {
            "pre_tags" : ["<tag1>", "<tag2>"],
            "post_tags" : ["</tag1>", "</tag2>"],
            "fields" : {
                "content" : {}
            }
        }
    }'

    返回结果:

    {
      "took": 41,
      "timed_out": false,
      "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
      },
      "hits": {
        "total": 5,
        "max_score": 0.6785375,
        "hits": [
          {
            "_index": "index",
            "_type": "fulltext",
            "_id": "7",
            "_score": 0.6785375,
            "_source": {
              "content": "印媒:中国东北“锈带”在困境中反击"
            },
            "highlight": {
              "content": [
                "印媒:<tag1>中国</tag1>东北“锈带”在困境中反击"
              ]
            }
          },
          {
            "_index": "index",
            "_type": "fulltext",
            "_id": "6",
            "_score": 0.47000363,
            "_source": {
              "content": "韩国银行面向中国留学生推出微信支付服务"
            },
            "highlight": {
              "content": [
                "韩国银行面向<tag1>中国</tag1>留学生推出微信支付服务"
              ]
            }
          },
          {
            "_index": "index",
            "_type": "fulltext",
            "_id": "4",
            "_score": 0.44000342,
            "_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": [
                "<tag1>中国</tag1>驻洛杉矶领事馆遭亚裔男子枪击 嫌犯已自首"
              ]
            }
          },
          {
            "_index": "index",
            "_type": "fulltext",
            "_id": "5",
            "_score": 0.2876821,
            "_source": {
              "content": "俄侦委:俄一辆卡车渡河时翻车 致2名中国游客遇难"
            },
            "highlight": {
              "content": [
                "俄侦委:俄一辆卡车渡河时翻车 致2名<tag1>中国</tag1>游客遇难"
              ]
            }
          },
          {
            "_index": "index",
            "_type": "fulltext",
            "_id": "3",
            "_score": 0.2876821,
            "_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": [
                "中韩渔警冲突调查:韩警平均每天扣1艘<tag1>中国</tag1>渔船"
              ]
            }
          }
        ]
      }
    }

    IK支持自定义配置词库,配置文件在config文件夹下的analysis-ik/IKAnalyzer.cfg.xml,字典文件也在同级目录下,可以支持多个选项的配置,ext_dict-自定义词库,ext_stopwords-屏蔽词库。

    同时还支持热更新配置,配置remote_ext_dict为http地址,输入一行一个词语,注意文档格式要为UTF8无BOM格式,如果词库发生更新,只需要更新response header中任意一个字段Last-Modified或ETag即可。

    [spark@master config]$ pwd
    /opt/elasticsearch-6.2.2/plugins/ik/config
    [spark@master config]$ more IKAnalyzer.cfg.xml 
    <?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
    <properties>
            <comment>IK Analyzer 扩展配置</comment>
            <!--用户可以在这里配置自己的扩展字典 -->
            <entry key="ext_dict"></entry>
             <!--用户可以在这里配置自己的扩展停止词字典-->
            <entry key="ext_stopwords"></entry>
            <!--用户可以在这里配置远程扩展字典 -->
            <!-- <entry key="remote_ext_dict">words_location</entry> -->
            <!--用户可以在这里配置远程扩展停止词字典-->
            <!-- <entry key="remote_ext_stopwords">words_location</entry> -->
    </properties>
    [spark@master config]$ 

    参考:

    《https://blog.csdn.net/moxiong3212/article/details/79338586》

    《https://www.cnblogs.com/gaoxu387/p/7889626.html》

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  • 原文地址:https://www.cnblogs.com/yy3b2007com/p/9344703.html
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