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solr+IK分词器学习笔记

solr安装

 1.下载安装solr

 http://archive.apache.org/dist/lucene/solr/

 2.运行solr

 在solr文件根目录执行命令:

//solr根目录下
//运行solr
bin/solr start -force
//停止运行
bin/solr stop
//重启solr
bin/solr restart
//指定端口号启动(默认端口号为8983)
bin/solr start -p 8888

 浏览器输入网址查看
 例:192.168.120.3:8983/solr
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 3.测试

在这里插入图片描述
 查看结果
在这里插入图片描述

 4.创建core实例

  1)命令行创建
//solr根目录下
//执行命令
bin/solr create -c name
//默认创建位置为: server/solr
  2)使用AdminUI页面创建

在这里插入图片描述

//步骤:
//1.输入内容 
//2.创建core目录 
mkdir server/solr/test_code
//3.复制conf目录到core目录 
cp -r server/solr/configsets/_default/conf
server/solr/test_core
4.页面点击"Add Core"

IK分词器安装

 1.安装配置步骤

  1) 下载IK分词器jar包

项目地址:https://github.com/EugenePig/ik-analyzer-solr5
可以通过maven将项目打包
或者直接在网上搜索"IK分词器的jar包"进行下载

  2) jar包放到solr项目的lib文件夹下
  3) 在WEB-INF文件夹内创建classes目录
//solr根目录下
mkdir server/solr-webapp/webapp/WEB-INF/classes
  4) 将项目地址中的IKAnalyzer.cfg.xml、stopword.dic、ext.dic复制到classes目录下
  5) 添加配置
//solr根目录下
vi server/solr/test_core/conf/managed-schema
//添加内容:
<fieldType name ="text_ik" class ="solr.TextField">
<!-- 索引时候的分词器-->
<analyzer type ="index" isMaxWordLength ="false" class ="org.wltea.analyzer.lucene.IKAnalyzer"/>
<!--查询时候的分词器-->
<analyzer type ="query" isMaxWordLength ="true" class ="org.wltea.analyzer.lucene.IKAnalyzer"/>
</fieldType>
//重启
  6) 测试

在这里插入图片描述

 2.自定义词库

  1)修改IKAnalyzer.cfg.xm
vi server/solr-webapp/webapp/WEB-INF/classes/IKAnalyzer.cfg.xml
<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">ext.dic;</entry>
        <!--用户可以在这里配置自己的扩展停止词字典-->
        <entry key="ext_stopwords">stopword.dic;</entry>
</properties>
  2)配置扩展词
vi ext.dic
//添加 是个好天气
//重启

在这里插入图片描述

  3)配置停止词
vi stopword.dic
//添加 好天
//重启

在这里插入图片描述

Java操作solr

 1.导入坐标

<dependency>
    <groupId>org.apache.solr</groupId>
    <artifactId>solr-solrj</artifactId>
    <version>7.2.1</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.7</version>
</dependency>
<dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.1.3</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
</dependency>

 2.创建实体类

public class Person {
    @Field(value = "id")
    private String id;
    
    @Field(value = "name")
    private String name;
    
    @Field(value = "description")
    private String description;
    
    public String getId() {
        return id;
    }
    
    public void setId(String id) {
        this.id = id;
    }
    
    public String getName() {
        return name;
    }
    
    public void setName(String name) {
        this.name = name;
    }
    
    public String getDescription() {
        return description;
    }
    
    public void setDescription(String description) {
        this.description = description;
    }
}

 3.创建SolrInfo配置项类

public class SolrInfo {
    private String q;//solr查询参数
    private String[] fq;//给query增加过滤查询条件
    private String df;//设置默认搜索域，从哪个字段上查找
    private Integer startRow;//设置分页参数 开始页
    private Integer endRow;//设置分页参数 结束页
    private Sort sort;
    private boolean isHightlight;
    private Hightlight hightlight = new Hightlight();

    public SolrInfo(String q, String[] fq, String df, Integer startRow, Integer endRow,
                    Sort sort, boolean isHightlight, Hightlight hightlight) {
        this.q = q;
        this.fq = fq;
        this.df = df;
        this.startRow = startRow;
        this.endRow = endRow;
        this.sort = sort;
        this.isHightlight = isHightlight;
        this.hightlight = hightlight;
    }
    public SolrInfo() {
    }
    public String getQ() {
        return q;
    }
    public void setQ(String q) {
        this.q = q;
    }
    public String[] getFq() {
        return fq;
    }
    public void setFq(String[] fq) {
        this.fq = fq;
    }
    public String getDf() {
        return df;
    }
    public void setDf(String df) {
        this.df = df;
    }
    public Integer getStartRow() {
        return startRow;
    }
    public void setStartRow(Integer startRow) {
        this.startRow = startRow;
    }
    public Integer getEndRow() {
        return endRow;
    }
    public void setEndRow(Integer endRow) {
        this.endRow = endRow;
    }
    public Sort getSort() {
        return sort;
    }
    public void setSort(Sort sort) {
        this.sort = sort;
    }
    public boolean isHightlight() {
        return isHightlight;
    }
    public Hightlight getHightlight() {
        return hightlight;
    }
    public void setHightlight(Hightlight hightlight) {
        this.hightlight = hightlight;
    }
    //设置高亮显示以及结果的样式
    static class Hightlight{
        private String HighlightField = "name";
        private String HighlightSimplePre = "<font color='red'>";
        private String HighlightSimplePost = "</font>";
        
        public Hightlight() {
        }
        public Hightlight(String highlightField,
                          String highlightSimplePre, String highlightSimplePost) {
            HighlightField = highlightField;
            HighlightSimplePre = highlightSimplePre;
            HighlightSimplePost = highlightSimplePost;
        }
        public String getHighlightField() {
            return HighlightField;
        }
        public void setHighlightField(String highlightField) {
            HighlightField = highlightField;
        }
        public String getHighlightSimplePre() {
            return HighlightSimplePre;
        }
        public void setHighlightSimplePre(String highlightSimplePre) {
            HighlightSimplePre = highlightSimplePre;
        }
        public String getHighlightSimplePost() {
            return HighlightSimplePost;
        }
        public void setHighlightSimplePost(String highlightSimplePost) {
            HighlightSimplePost = highlightSimplePost;
        }
    }
    //设置返回结果的排序规则
    static class Sort{
        private String sortName;
        private SolrQuery.ORDER sortOrder;

        public Sort(String sortName, SolrQuery.ORDER sortOrder) {
            this.sortName = sortName;
            this.sortOrder = sortOrder;
        }
        public Sort(){
        }
        public String getSortName() {
            return sortName;
        }
        public void setSortName(String sortName) {
            this.sortName = sortName;
        }
        public SolrQuery.ORDER getSortOrder() {
            return sortOrder;
        }
        public void setSortOrder(SolrQuery.ORDER sortOrder) {
            this.sortOrder = sortOrder;
        }
    }
}

 4. 创建SolrUtil工具类

public class SolrUtil {
    //solr服务器所在的地址，test_core为自己创建的文档库目录
    private final static String SOLR_URL = "http://192.168.120.3:8983/solr/test_core";

    /**
     * 获取客户端的连接
     *
     * @return
     */
    public HttpSolrClient createSolrServer() {
        HttpSolrClient solr = new HttpSolrClient.Builder(SOLR_URL).withConnectionTimeout(10000)
                .withSocketTimeout(60000).build();
        return solr;
    }
    /**
     * 往索引库添加文档
     *
     * @throws SolrServerException
     * @throws IOException
     */
    public void addDoc(SolrInputDocument document) throws SolrServerException, IOException {
        HttpSolrClient solr = this.createSolrServer();
        solr.add(document);
        solr.commit();
        solr.close();
        System.out.println("添加成功: " + document.toString());
    }
    /**
     * 往索引库添加文档
     *
     * @throws SolrServerException
     * @throws IOException
     */
    public void addDoc(Object obj) throws SolrServerException, IOException {
        SolrInputDocument document = new SolrInputDocument();
        Map<String, Object> map;
        if (!(obj instanceof java.util.Map)){
            //hutool的BeanUtil
            map = BeanUtil.beanToMap(obj);

        }else {
            map = (Map<String, Object>) obj;
        }
        Iterator<Map.Entry<String, Object>> iterator = map.entrySet().iterator();
        while (iterator.hasNext()){
            Map.Entry<String, Object> next = iterator.next();
            document.addField(next.getKey(),next.getValue());
        }
        HttpSolrClient solr = this.createSolrServer();
        solr.add(document);
        solr.commit();
        solr.close();
        System.out.println("添加成功: " + document.toString());
    }
    /**
     * 往索引库添加文档
     *
     * @throws SolrServerException
     * @throws IOException
     */
    public void addDoc(List<Object> lists) throws SolrServerException, IOException {
        for (Object o:lists){
           this.addDoc(o);
        }
        System.out.println("添加成功: " + lists.toString());
    }
    /**
     * 根据ID从索引库删除文档
     *
     * @throws SolrServerException
     * @throws IOException
     */
    public void deleteDocById(String id) throws SolrServerException, IOException {
        HttpSolrClient server = this.createSolrServer();
        server.deleteById(id);
        server.commit();
        server.close();
        System.out.println("删除成功: " + id);
    }
    /**
     * 根据多个ID从索引库删除文档
     *
     * @throws SolrServerException
     * @throws IOException
     */
    public void deleteDocByIds(List<String> ids) throws SolrServerException, IOException {
        HttpSolrClient server = this.createSolrServer();
        server.deleteById(ids);
        server.commit();
        server.close();
        System.out.println("删除成功: " + ids.toString());
    }
    /**
     * 根据查询条件从索引库删除文档
     *
     * @throws SolrServerException
     * @throws IOException
     */
    public void deleteDocByQuery(String query) throws SolrServerException, IOException {
        HttpSolrClient server = this.createSolrServer();
        server.deleteByQuery(query);
        server.commit();
        server.close();
        System.out.println("删除成功: " + query);
    }
    /**
     * 根据设定的查询条件进行文档字段的高亮查询
     *
     * @throws Exception
     */
    public Map<String,Object> queryDoc(SolrInfo solrInfo) throws Exception {
        HttpSolrClient server = this.createSolrServer();
        SolrQuery query = new SolrQuery();
        //下面设置solr查询参数
        if(!StringUtils.isEmpty(solrInfo.getQ())){
            query.set("q", solrInfo.getQ());//相关查询，比如某条数据某个字段含有周、星、驰三个字  将会查询出来 ，这个作用适用于联想查询
        }
        //参数fq, 给query增加过滤查询条件
        if (solrInfo.getFq()!=null){
            query.addFilterQuery(solrInfo.getFq());
        }
        //参数df,给query设置默认搜索域，从哪个字段上查找
        if (!StringUtils.isEmpty(solrInfo.getDf())){
            query.set("df", solrInfo.getDf());
        }
        //参数sort,设置返回结果的排序规则
        if (solrInfo.getSort() != null) {
            query.setSort(solrInfo.getSort().getSortName(), solrInfo.getSort().getSortOrder());
        }
        //设置分页参数
        if (!StringUtils.isEmpty(String.valueOf(solrInfo.getStartRow()))){
            query.setStart(solrInfo.getStartRow());
        }
        if (!StringUtils.isEmpty(String.valueOf(solrInfo.getEndRow()))){
            query.setRows(solrInfo.getEndRow());
        }
        //设置高亮显示以及结果的样式
        if (solrInfo.isHightlight()) {
            query.addHighlightField(solrInfo.getHightlight().getHighlightField());
            query.setHighlightSimplePre(solrInfo.getHightlight().getHighlightSimplePre());
            query.setHighlightSimplePost(solrInfo.getHightlight().getHighlightSimplePost());
        }
        //执行查询
        QueryResponse response = server.query(query);
        //获取返回结果
        Map<String,Object> map = new HashMap<>();
        SolrDocumentList resultList = response.getResults();
        for (SolrDocument document : resultList) {
            Collection<String> fieldNames = document.getFieldNames();
            for (String fieldName : fieldNames) {
                //判断是否高亮
                if (solrInfo.isHightlight()){
                    Map<String, Map<String, List<String>>> hl = response.getHighlighting();
                    map.put("HLField",hl);
                    Map<String, List<String>> hlField = hl.get(document.getFieldValue("id"));
                    if(hlField.get(fieldName)!=null){
                        System.out.println(fieldName + ": " + hlField.get(fieldName).get(0));
                    }else{
                        System.out.println(fieldName + ": " + document.getFieldValue(fieldName));
                    }
                }else{
                    System.out.println(fieldName + ": " + document.getFieldValue(fieldName));
                }
            }
        }
        //获取实体对象形式
        List<Person> persons = response.getBeans(Person.class);
        map.put("objList",persons);
        return map;
    }
}

 5.修改关键字类型

<fieldType name="text_ik" class="solr.TextField">
    <analyzer type="index" class="org.wltea.analyzer.lucene.IKAnalyzer" luceneMatchVersion="8.7.0"/>
    <analyzer type="query" class="org.wltea.analyzer.lucene.IKAnalyzer" luceneMatchVersion="8.7.0"/>
</fieldType>
------------------------------
<field name="description" type="text_ik"/><!-- 设置为IK分词器类型 -->
<field name="id" type="string" multiValued="false" indexed="true" required="true" stored="true"/>
<field name="name" type="text_ik"/>
<field name="title" type="text_general"/>

注:如果存储的字段值为数组形式
    如:“id”:[“10”]
    将配置文件对应字段的multiValued设置为false
    最后记得重启solr

 6.用户查询流程

  1. 用户设置条件进行查询
  2. solr会将查询内容根据分词器进行拆分后再查找
  3. 返回匹配的内容(包括按分词查找的结果)
  4. 如果设置了停止词, 返回结果不包括

悦读

道可道，非常道；名可名，非常名。 无名，天地之始，有名，万物之母。 故常无欲，以观其妙，常有欲，以观其徼。 此两者，同出而异名，同谓之玄，玄之又玄，众妙之门。

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