如何安装elasticsearch中文切词插件hanlp

这篇文章主要介绍如何安装elasticsearch中文切词插件hanlp，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

hanlp好处的,就是它的data字典比较齐全.

github上有国人写hanlp支持es的插件

https://github.com/pengcong90/elasticsearch-analysis-hanlp

下载它的安装 release 包

下载发现解压按它的安装要求总找不到hanlp.properties文件

将源码git下来,发现路径有问题.

package org.elasticsearch.index.analysis;import com.hankcs.hanlp.HanLP;import com.hankcs.hanlp.utility.Predefine;import com.hankcs.lucene4.HanLPIndexAnalyzer;import org.elasticsearch.common.inject.Inject;import org.elasticsearch.common.inject.assistedinject.Assisted;import org.elasticsearch.common.settings.Settings;import org.elasticsearch.env.Environment;import org.elasticsearch.index.IndexSettings;/** */public class HanLPAnalyzerProvider extends AbstractIndexAnalyzerProvider {    private final HanLPIndexAnalyzer analyzer;    private static String sysPath = String.valueOf(System.getProperties().get("user.dir"));    @Inject    public HanLPAnalyzerProvider(IndexSettings indexSettings, Environment env, @Assisted String name, @Assisted Settings settings) {        super(indexSettings, name, settings);        //原来路径        //Predefine.HANLP_PROPERTIES_PATH = sysPath.substring(0, sysPath.length()-4) + "/plugins/analysis-hanlp/hanlp.properties";        //修改后正确路径        Predefine.HANLP_PROPERTIES_PATH = sysPath + "/plugins/analysis-hanlp/hanlp.properties";        analyzer = new HanLPIndexAnalyzer(true);    }    public static HanLPAnalyzerProvider getIndexAnalyzerProvider(IndexSettings indexSettings, Environment env, String name, Settings settings) {        return new HanLPAnalyzerProvider(indexSettings, env, name, settings);    }    public static HanLPAnalyzerProvider getSmartAnalyzerProvider(IndexSettings indexSettings, Environment env, String name, Settings settings) {        return new HanLPAnalyzerProvider(indexSettings, env, name, settings);    }    @Override    public HanLPIndexAnalyzer get() {        return this.analyzer;    }}

因为它的hanlp版本是1.2.8,最新版本是1.5.4
修改pom.xml为

                       com.hankcs                hanlp                portable-1.5.4                                

打包编译

在$ES_HOME下/plugins建立analysis-hanlp文件
目录下结构为

hanlp.properties属性(可以直接从 https://github.com/hankcs/HanLP 的realease下载修改root路径就行了)

#本配置文件中的路径的根目录，根目录+其他路径=完整路径（支持相对路径，请参考：https://github.com/hankcs/HanLP/pull/254）#Windows用户请注意，路径分隔符统一使用/root=/opt/elasticsearch-5.5.1/plugins/analysis-hanlp#核心词典路径CoreDictionaryPath=data/dictionary/CoreNatureDictionary.txt#2元语法词典路径BiGramDictionaryPath=data/dictionary/CoreNatureDictionary.ngram.txt#停用词词典路径CoreStopWordDictionaryPath=data/dictionary/stopwords.txt#同义词词典路径CoreSynonymDictionaryDictionaryPath=data/dictionary/synonym/CoreSynonym.txt#人名词典路径PersonDictionaryPath=data/dictionary/person/nr.txt#人名词典转移矩阵路径PersonDictionaryTrPath=data/dictionary/person/nr.tr.txt#繁简词典根目录tcDictionaryRoot=data/dictionary/tc#自定义词典路径，用;隔开多个自定义词典，空格开头表示在同一个目录，使用"文件名 词性"形式则表示这个词典的词性默认是该词性。优先级递减。#另外data/dictionary/custom/CustomDictionary.txt是个高质量的词库，请不要删除。所有词典统一使用UTF-8编码。CustomDictionaryPath=data/dictionary/custom/CustomDictionary.txt; 现代汉语补充词库.txt; 全国地名大全.txt ns; 人名词典.txt; 机构名词典.txt; 上海地名.txt ns;data/dictionary/person/nrf.txt nrf;#CRF分词模型路径CRFSegmentModelPath=data/model/segment/CRFSegmentModel.txt#HMM分词模型HMMSegmentModelPath=data/model/segment/HMMSegmentModel.bin#分词结果是否展示词性ShowTermNature=true#IO适配器，实现com.hankcs.hanlp.corpus.io.IIOAdapter接口以在不同的平台（Hadoop、Redis等）上运行HanLP#默认的IO适配器如下，该适配器是基于普通文件系统的。#IOAdapter=com.hankcs.hanlp.corpus.io.FileIOAdapter

plugin-descriptor.properties和plugin-security.policy属性按 elasticsearch-analysis-hanlp 的release包属性修改.

修改ES启动,并启动

vim /opt/elasticsearch-5.5.1config/jvm.options #新增-Djava.security.policy=/opt/elasticsearch-5.5.1/plugins/analysis-hanlp/plugin-security.policy

测试安装成功否命令

GET /_analyze?analyzer=hanlp-index&pretty=true { "text":"公安部：各地校车将享最高路权" }

data字典文件从 https://github.com/hankcs/HanLP/releases 下载,解压就行了.

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