一、效果图

1.1 拼音搜索

1.2 汉字搜索

现在需要实现输入拼音只匹配第一个汉字，处于第二位和后面的不匹配，如果有大佬知道请赐教。

二、代码实现

2.1、相关环境搭建

1、安装ES(版本：5.0.0)

2、安装elasticsearch-analysis-ik（注意：版本和ES统一）

3、安装elasticsearch-analysis-pinyin（注意：版本和ES统一）

4、搭建springboot项目（springboot版本：2.0.4.RELEASE）

2.2、具体代码

1、springboot项目pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.0.4.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.example</groupId><artifactId>demo</artifactId><version>0.0.1-SNAPSHOT</version><name>demo</name><description>Demo project for Spring Boot</description><properties><java.version>1.8</java.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope><exclusions><exclusion><groupId>org.junit.vintage</groupId><artifactId>junit-vintage-engine</artifactId></exclusion></exclusions></dependency><!-- elasticsearch启动器 (必须)--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-elasticsearch</artifactId></dependency><!--junit单元测试--><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope><version>4.12</version></dependency><dependency><groupId>net.sf.json-lib</groupId><artifactId>json-lib</artifactId><version>2.2.3</version><classifier>jdk15</classifier></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

2、创建实体类Search

package com.example.entity;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.*;@Mapping(mappingPath = "elasticsearch_mapping_search.json")//设置mapping
@Setting(settingPath = "elasticsearch_setting_search.json")//设置setting
@Document(indexName = "menusearch", type = "menu", shards = 1, replicas = 0)
public class Search {@Idprivate Long id;//id@Field(type = FieldType.Text,analyzer = "pinyin_analyzer",searchAnalyzer = "pinyin_analyzer")private String value;//菜单名称@Field(type = FieldType.Keyword)private String url;//菜单跳转地址@Field(type = FieldType.Keyword)private String type;//类型，是不是产品@Field(type = FieldType.Keyword)private String content;//public Search() {}public Search(Long id, String value, String url, String type, String content) {this.id = id;this.value = value;this.url = url;this.type = type;this.content = content;}public Long getId() {return id;}public void setId(Long id) {this.id = id;}public String getValue() {return value;}public void setValue(String value) {this.value = value;}public String getUrl() {return url;}public void setUrl(String url) {this.url = url;}public String getType() {return type;}public void setType(String type) {this.type = type;}public String getContent() {return content;}public void setContent(String content) {this.content = content;}@Overridepublic String toString() {return "Search{" +"id=" + id +", value='" + value + '\'' +", url='" + url + '\'' +", type='" + type + '\'' +", content='" + content + '\'' +'}';}
}

3、创建实体类对应的配置文件elasticsearch_mapping_search.json（放在项目resources目录下）

{"menu": {"properties": {"content": {"type": "keyword","fields": {"keyword": {"type": "keyword","ignore_above": 256}}},"type": {"type": "keyword","fields": {"keyword": {"type": "keyword","ignore_above": 256}}} ,"url": {"type": "keyword","fields": {"keyword": {"type": "keyword","ignore_above": 256}}},"value": {"type": "text","analyzer": "pinyin_analyzer","search_analyzer": "pinyin_analyzer","fields": {"keyword": {"type": "keyword","ignore_above": 256}}}}}
}

4、创建实体类对应的配置文件elasticsearch_setting_search.json（放在项目resources目录下）

{"index": {"analysis": {"analyzer": {"pinyin_analyzer": {"tokenizer": "my_pinyin"}},"tokenizer": {"my_pinyin": {"type": "pinyin",//true：支持首字母"keep_first_letter": true,"first_letter" : "prefix",//false：首字母搜索只有两个首字母相同才能命中，全拼能命中//true：任何情况全拼，首字母都能命中"keep_separate_first_letter": true,//true：支持全拼  eg: 刘德华 -> [liu,de,hua]"keep_full_pinyin": true,"keep_original": true,"keep_none_chinese": true,"keep_none_chinese_in_first_letter": true,//设置最大长度"limit_first_letter_length": 16,"lowercase": true,"trim_whitespace": true,//重复的项将被删除,eg: 德的 -> de"remove_duplicated_term": true}}}}
}

5、创建接口

package com.example.demo;
import com.example.entity.Search;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;public interface SearchReposity extends ElasticsearchRepository<Search,Long> {}

6、业务代码实现

package com.example.demo;
import com.example.entity.Search;
import net.sf.json.JSONObject;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.WildcardQueryBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;@Controller
public class HelloController {@Autowiredprivate SearchReposity searchReposity;@RequestMapping("/search")@ResponseBodypublic String searchByPinYin(HttpServletRequest request, HttpServletResponse response){String content = request.getParameter("keywords");WildcardQueryBuilder wildcardQueryBuilder = QueryBuilders.wildcardQuery("value", content+"*");Iterable<Search> iterable = searchReposity.search(wildcardQueryBuilder);JSONObject jsonObject = JSONObject.fromObject(iterable);return jsonObject.toString();}
}

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