ElasticSearch入门3: Spring Boot集成ElasticSearch
第一步：创建项目elasticsearch 编写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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.payease</groupId> <artifactId>elasticsearch</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>elasticsearch</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.9.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <elasticsearch.version>6.1.1</elasticsearch.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> </dependency> <!-- Elasticsearch核心依赖包 --> <dependency> <groupId>org.elasticsearch.client</groupId> <artifactId>transport</artifactId> <version>${elasticsearch.version}</version> </dependency> <!-- 日志依赖 --> <!-- ===================== @Getter @Setter @Slf4j @Data ======================== --> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>4.3.12.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
第二步：ElasticSearch配置的构造：创建MyConfig.java文件
package com.payease.elasticsearch; import org.elasticsearch.client.transport.TransportClient; import org.elasticsearch.common.settings.Settings; import org.elasticsearch.common.transport.TransportAddress; import org.elasticsearch.transport.client.PreBuiltTransportClient; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import java.net.InetAddress; import java.net.UnknownHostException; /** * ElasticSearch配置的构造 * @Created By liuxiaoming * @CreateTime 2017/12/27 下午4:41 **/ @Configuration public class MyConfig { @Bean public TransportClient client() throws UnknownHostException{ //es集群连接 TransportAddress node = new TransportAddress( InetAddress.getByName("localhost"), 9300 ); TransportAddress node1 = new TransportAddress( InetAddress.getByName("localhost"), 9301 ); TransportAddress node2 = new TransportAddress( InetAddress.getByName("localhost"), 9302 ); //es集群配置（自定义配置） 连接自己安装的集群名称 Settings settings = Settings.builder() .put("cluster.name","xiaoming") .build(); PreBuiltTransportClient client = new PreBuiltTransportClient(settings); client.addTransportAddress(node); client.addTransportAddress(node1); client.addTransportAddress(node2); return client; } }
第三步：配置日志文件log4j2.properties
appender.console.type = Console appender.console.name = console appender.console.layout.type = PatternLayout appender.console.layout.pattern = [%t] %-5p %c - %m%n rootLogger.level = info rootLogger.appenderRef.console.ref = console
第四步：在ElasticsearchApplication 启动类中编写
package com.payease.elasticsearch; import lombok.extern.slf4j.Slf4j; import org.elasticsearch.action.delete.DeleteResponse; import org.elasticsearch.action.get.GetResponse; import org.elasticsearch.action.index.IndexResponse; import org.elasticsearch.action.search.SearchRequestBuilder; import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.action.search.SearchType; import org.elasticsearch.action.update.UpdateRequest; import org.elasticsearch.action.update.UpdateResponse; import org.elasticsearch.client.transport.TransportClient; import org.elasticsearch.common.xcontent.XContentBuilder; import org.elasticsearch.common.xcontent.XContentFactory; import org.elasticsearch.index.query.BoolQueryBuilder; import org.elasticsearch.index.query.QueryBuilders; import org.elasticsearch.index.query.RangeQueryBuilder; import org.elasticsearch.search.SearchHit; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.format.annotation.DateTimeFormat; import org.springframework.http.HttpStatus; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.*; import java.io.IOException; import java.util.ArrayList; import java.util.Date; import java.util.List; import java.util.Map; @SpringBootApplication @RestController @Slf4j public class ElasticsearchApplication { @Autowired private TransportClient client; /*@GetMapping("/") public String index(){return "index";}*/ //单一查询 @GetMapping("/get/book/novel") @ResponseBody public ResponseEntity get(@RequestParam(name = "id",defaultValue = "") String id){ if(id.isEmpty()){ return new ResponseEntity(HttpStatus.NOT_FOUND); } GetResponse result = this.client.prepareGet("book", "novel", id).get(); if(!result.isExists()){ return new ResponseEntity(HttpStatus.NOT_FOUND); } return new ResponseEntity(result.getSource(), HttpStatus.OK); } //新增 @PostMapping("add/book/novel") @ResponseBody public ResponseEntity add( @RequestParam(name = "title") String title, @RequestParam(name = "author") String author, @RequestParam(name = "word_count") int wordCount, @RequestParam(name = "publish_date") @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss") Date publishDate){ try { XContentBuilder content = XContentFactory.jsonBuilder() .startObject() .field("title", title) .field("author", author) .field("word_count", wordCount) .field("publish_date", publishDate.getTime()) .endObject(); IndexResponse result = this.client.prepareIndex("book", "novel") .setSource(content) .get(); return new ResponseEntity(result.getId(),HttpStatus.OK); }catch (IOException e){ e.printStackTrace(); return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR); } } //删除 @DeleteMapping("delete/book/novel") @ResponseBody public ResponseEntity delete(@RequestParam(name = "id") String id){ DeleteResponse result = this.client.prepareDelete("book", "novel", id).get(); return new ResponseEntity(result.getResult().toString(),HttpStatus.OK); } public static void main(String[] args) { SpringApplication.run(ElasticsearchApplication.class, args); } //修改 @PutMapping("update/book/novel") @ResponseBody public ResponseEntity update( @RequestParam(name = "id") String id, @RequestParam(name = "title", required = false) String title, @RequestParam(name = "author", required = false) String author ){ UpdateRequest update = new UpdateRequest("book", "novel", id); try { XContentBuilder builder= XContentFactory.jsonBuilder().startObject(); if (title != null){ builder.field("title", title); } if(author != null){ builder.field("author", author); } builder.endObject(); update.doc(builder); } catch (IOException e) { e.printStackTrace(); return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR); } try { UpdateResponse result = this.client.update(update).get(); return new ResponseEntity(result.getResult().toString(), HttpStatus.OK); } catch (Exception e) { e.printStackTrace(); return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR); } } //复合查询 @PostMapping("query/book/novel") @ResponseBody public ResponseEntity query( @RequestParam(name = "author", required = false) String author, @RequestParam(name = "title", required = false) String title, @RequestParam(name = "gt_word_count", defaultValue = "0") int gtWordCount, @RequestParam(name = "lt_word_count", required = false) Integer ltWordCount ){ BoolQueryBuilder boolQuery = QueryBuilders.boolQuery(); if(author != null){ boolQuery.must(QueryBuilders.matchQuery("author", author)); } if(title != null){ boolQuery.must(QueryBuilders.matchQuery("title", title)); } RangeQueryBuilder rangeQuery = QueryBuilders.rangeQuery("word_count").from(gtWordCount); if(ltWordCount != null && ltWordCount > 0){ rangeQuery.to(ltWordCount); } boolQuery.filter(rangeQuery); SearchRequestBuilder builder = this.client.prepareSearch("book") .setTypes("novel") .setSearchType(SearchType.DFS_QUERY_THEN_FETCH) .setQuery(boolQuery) .setFrom(0) .setSize(10); log.info(String.valueOf(builder)); SearchResponse response = builder.get(); List<Map<String, Object>> result = new ArrayList<>(); for (SearchHit hit : response.getHits()){ result.add(hit.getSourceAsMap()); } return new ResponseEntity(result, HttpStatus.OK); } }
第五步：启动项目 进行postman验证
1.添加操作：
1.1 postman请求： POST localhost:8080/add/book/novel
添加参数，点击send发送请求
得到返回值：PFZZl2AB7nlxAXYrVdBg
2.单一查询操作：
2.1 postman请求： GET localhost:8080/get/book/novel?id=PFZZl2AB7nlxAXYrVdBg
点击send发送请求
得到响应数据
{
"word_count": 1000,
"author": "作者",
"title": "标题",
"publish_date": 1503590400000
}
3.删除操作：
3.1 postman请求： DELETE localhost:8080/delete/book/novel?id=PFZZl2AB7nlxAXYrVdBg
点击send发送请求
得到响应数据
DELETED
4.修改操作：
4.1 postman请求： PUT localhost:8080/update/book/novel
点击send发送请求
得到响应数据
UPDATED
4.复合查询：
4.1 postman请求： POST localhost:8080/query/book/novel
点击send发送请求
得到响应数据
[
{
"word_count": 1000,
"author": "晓明修改",
"title": "标题",
"publish_date": 1503590400000
}
]
4.2 idea控制台打印信息
{
"from": 0,
"size": 10,
"query": {
"bool": {
"must": [
{
"match": {
"author": {
"query": "晓明",
"operator": "OR",
"prefix_length": 0,
"max_expansions": 50,
"fuzzy_transpositions": true,
"lenient": false,
"zero_terms_query": "NONE",
"auto_generate_synonyms_phrase_query": true,
"boost": 1
}
}
},
{
"match": {
"title": {
"query": "标题",
"operator": "OR",
"prefix_length": 0,
"max_expansions": 50,
"fuzzy_transpositions": true,
"lenient": false,
"zero_terms_query": "NONE",
"auto_generate_synonyms_phrase_query": true,
"boost": 1
}
}
}
],
"filter": [
{
"range": {
"word_count": {
"from": 0,
"to": 2000,
"include_lower": true,
"include_upper": true,
"boost": 1
}
}
}
],
"adjust_pure_negative": true,
"boost": 1
}
}
}
