Spring Boot + Spring Data + Elasticsearch实例
2018-01-07 09:28
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Spring Boot + Spring Data + Elasticsearch实例
在本文中，我们将讨论“如何创建Spring Boot + Spring Data + Elasticsearch范例”。本文中使用的工具：
Spring Boot 1.5.1.RELEASE
Spring Boot Starter Data Elasticsearch 1.5.1.RELEASE
Spring Data Elasticsearch 2.10.RELEASE
Elasticsearch 2.4.4
Maven
Java 8
注意
SpringBoot 1.5.1.RELEASE和Spring Data Elasticsearch 2.10.RELEASE仅支持ElasticSearch 2.4.0。他们不支持最新版本的ElasticSearch 5.x版本。
另附：目前spring boot借助spring data可以操作es。但是版本上有严格的要求。（此句非原文，减少踩坑）
1.项目结构
一个标准的Maven项目结构。
2.项目依赖
为Spring Data ElasticSearch application配置spring-boot-starter-data-elasticsearch。
pom.xml
<?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> <artifactId>springboot-springdata-elasticsearch-example</artifactId> <packaging>jar</packaging> <url>https://www.mkyong.com</url> <version>1.0</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.1.RELEASE</version> </parent> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!-- Runtime, for Embedded Elasticsearch, comment this if connect to external elastic search server--> <dependency> <groupId>net.java.dev.jna</groupId> <artifactId>jna</artifactId> <scope>runtime</scope> </dependency> </dependencies> <build> <plugins> <!-- Package as an executable jar/war --> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
检查项目依赖关系：
$ mvn dependency:tree [INFO] Scanning for projects... [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Building springboot-springdata-elasticsearch-example 1.0 [INFO] ------------------------------------------------------------------------ [INFO] [INFO] --- maven-dependency-plugin:2.10:tree (default-cli) @ springboot-springdata-elasticsearch-example --- [INFO] org.springframework.boot:springboot-springdata-elasticsearch-example:jar:1.0 [INFO] +- org.springframework.boot:spring-boot-starter-data-elasticsearch:jar:1.5.1.RELEASE:compile [INFO] | +- org.springframework.boot:spring-boot-starter:jar:1.5.1.RELEASE:compile [INFO] | | +- org.springframework.boot:spring-boot:jar:1.5.1.RELEASE:compile [INFO] | | +- org.springframework.boot:spring-boot-autoconfigure:jar:1.5.1.RELEASE:compile [INFO] | | +- org.springframework.boot:spring-boot-starter-logging:jar:1.5.1.RELEASE:compile [INFO] | | | +- ch.qos.logback:logback-classic:jar:1.1.9:compile [INFO] | | | | \- ch.qos.logback:logback-core:jar:1.1.9:compile [INFO] | | | +- org.slf4j:jul-to-slf4j:jar:1.7.22:compile [INFO] | | | \- org.slf4j:log4j-over-slf4j:jar:1.7.22:compile [INFO] | | \- org.yaml:snakeyaml:jar:1.17:compile [INFO] | \- org.springframework.data:spring-data-elasticsearch:jar:2.1.0.RELEASE:compile [INFO] | +- org.springframework:spring-context:jar:4.3.6.RELEASE:compile [INFO] | | +- org.springframework:spring-aop:jar:4.3.6.RELEASE:compile [INFO] | | +- org.springframework:spring-beans:jar:4.3.6.RELEASE:compile [INFO] | | \- org.springframework:spring-expression:jar:4.3.6.RELEASE:compile [INFO] | +- org.springframework:spring-tx:jar:4.3.6.RELEASE:compile [INFO] | +- org.springframework.data:spring-data-commons:jar:1.13.0.RELEASE:compile [INFO] | +- commons-lang:commons-lang:jar:2.6:compile [INFO] | +- joda-time:joda-time:jar:2.9.7:compile [INFO] | +- org.elasticsearch:elasticsearch:jar:2.4.4:compile [INFO] | | +- org.apache.lucene:lucene-core:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-backward-codecs:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-analyzers-common:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-queries:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-memory:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-highlighter:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-queryparser:jar:5.5.2:compile [INFO] | | | \- org.apache.lucene:lucene-sandbox:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-suggest:jar:5.5.2:compile [INFO] | | | \- org.apache.lucene:lucene-misc:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-join:jar:5.5.2:compile [INFO] | | | \- org.apache.lucene:lucene-grouping:jar:5.5.2:compile [INFO] | | +- org.apache.lucene:lucene-spatial:jar:5.5.2:compile [INFO] | | | +- org.apache.lucene:lucene-spatial3d:jar:5.5.2:compile [INFO] | | | \- com.spatial4j:spatial4j:jar:0.5:compile [INFO] | | +- com.google.guava:guava:jar:18.0:compile [INFO] | | +- org.elasticsearch:securesm:jar:1.0:compile [INFO] | | +- com.carrotsearch:hppc:jar:0.7.1:compile [INFO] | | +- com.fasterxml.jackson.dataformat:jackson-dataformat-smile:jar:2.8.6:compile [INFO] | | +- com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:jar:2.8.6:compile [INFO] | | +- com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:jar:2.8.6:compile [INFO] | | +- io.netty:netty:jar:3.10.6.Final:compile [INFO] | | +- com.ning:compress-lzf:jar:1.0.2:compile [INFO] | | +- com.tdunning:t-digest:jar:3.0:compile [INFO] | | +- org.hdrhistogram:HdrHistogram:jar:2.1.6:compile [INFO] | | +- commons-cli:commons-cli:jar:1.3.1:compile [INFO] | | \- com.twitter:jsr166e:jar:1.1.0:compile [INFO] | +- com.fasterxml.jackson.core:jackson-core:jar:2.8.6:compile [INFO] | +- com.fasterxml.jackson.core:jackson-databind:jar:2.8.6:compile [INFO] | | \- com.fasterxml.jackson.core:jackson-annotations:jar:2.8.0:compile [INFO] | +- org.slf4j:slf4j-api:jar:1.7.22:compile [INFO] | \- org.slf4j:jcl-over-slf4j:jar:1.7.22:compile [INFO] +- org.springframework.boot:spring-boot-starter-test:jar:1.5.1.RELEASE:test [INFO] | +- org.springframework.boot:spring-boot-test:jar:1.5.1.RELEASE:test [INFO] | +- org.springframework.boot:spring-boot-test-autoconfigure:jar:1.5.1.RELEASE:test [INFO] | +- com.jayway.jsonpath:json-path:jar:2.2.0:test [INFO] | | \- net.minidev:json-smart:jar:2.2.1:test [INFO] | | \- net.minidev:accessors-smart:jar:1.1:test [INFO] | | \- org.ow2.asm:asm:jar:5.0.3:test [INFO] | +- junit:junit:jar:4.12:test [INFO] | +- org.assertj:assertj-core:jar:2.6.0:test [INFO] | +- org.mockito:mockito-core:jar:1.10.19:test [INFO] | | \- org.objenesis:objenesis:jar:2.1:test [INFO] | +- org.hamcrest:hamcrest-core:jar:1.3:test [INFO] | +- org.hamcrest:hamcrest-library:jar:1.3:test [INFO] | +- org.skyscreamer:jsonassert:jar:1.4.0:test [INFO] | | \- com.vaadin.external.google:android-json:jar:0.0.20131108.vaadin1:test [INFO] | +- org.springframework:spring-core:jar:4.3.6.RELEASE:compile [INFO] | \- org.springframework:spring-test:jar:4.3.6.RELEASE:test [INFO] \- net.java.dev.jna:jna:jar:4.2.2:runtime [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 1.867 s [INFO] Finished at: 2017-03-14T19:55:41+08:00 [INFO] Final Memory: 27M/437M [INFO] ------------------------------------------------------------------------
3. Spring Data ElasticSearch应用程序
现在开始我们的Spring Boot + Spring Data + Elasticsearch实例：
3.1，为我们的项目开发model类
Book.java
package com.mkyong.book.model;
import org.springframework.data.annotation.Id;
import org.springframework.data.elasticsearch.annotations.Document;
@Document(indexName = "mkyong", type = "books")
public class Book {
@Id
private String id;
private String title;
private String author;
private String releaseDate;
public Book() {
}
public Book(String id, String title, String author, String releaseDate) {
this.id = id;
this.title = title;
this.author = author;
this.releaseDate = releaseDate;
}
//getters and setters
@Override
public String toString() {
return "Book{" +
"id='" + id + '\'' +
", title='" + title + '\'' +
", author='" + author + '\'' +
", releaseDate='" + releaseDate + '\'' +
'}';
}
}3.2，为我们的项目开发Elasticsearch存储库
BookRepository.java
package com.mkyong.book.repository;
import com.mkyong.book.model.Book;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
import java.util.List;
public interface BookRepository extends ElasticsearchRepository<Book, String> {
Page<Book> findByAuthor(String author, Pageable pageable);
List<Book> findByTitle(String title);
}3.3，为我们的项目开发service层
BookService.java
package com.mkyong.book.service;
import com.mkyong.book.model.Book;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import java.util.List;
public interface BookService {
Book save(Book book);
void delete(Book book);
Book findOne(String id);
Iterable<Book> findAll();
Page<Book> findByAuthor(String author, PageRequest pageRequest);
List<Book> findByTitle(String title);
}BookServiceImpl.java
package com.mkyong.book.service;
import com.mkyong.book.model.Book;
import com.mkyong.book.repository.BookRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class BookServiceImpl implements BookService {
private BookRepository bookRepository;
@Autowired
public void setBookRepository(BookRepository bookRepository) {
this.bookRepository = bookRepository;
}
public Book save(Book book) {
return bookRepository.save(book);
}
public void delete(Book book) {
bookRepository.delete(book);
}
public Book findOne(String id) {
return bookRepository.findOne(id);
}
public Iterable<Book> findAll() {
return bookRepository.findAll();
}
public Page<Book> findByAuthor(String author, PageRequest pageRequest) {
return bookRepository.findByAuthor(author, pageRequest);
}
public List<Book> findByTitle(String title) {
return bookRepository.findByTitle(title);
}
}3.4，在application.properties中配置Elasticsearch属性
application.properties
elasticsearch.clustername = mkyong-cluster elasticsearch.host = localhost elasticsearch.port = 9300 # # Home directory of the embedded Elasticsearch instance. Default to the # current working directory. # #spring.data.elasticsearch.properties.path.home=target/elastic-embedded #spring.data.elasticsearch.properties.transport.tcp.connect_timeout=60s
3.5，为SpringBoot配置。TransportClient连接ElasticSearch
MkyongElasticsearchConfiguration.java
package com.mkyong;
import org.elasticsearch.client.Client;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.core.ElasticsearchOperations;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.data.elasticsearch.repository.config.EnableElasticsearchRepositories;
import java.net.InetAddress;
@Configuration
@EnableElasticsearchRepositories(basePackages = "com.mkyong.book.repository")
public class EsConfig {
@Value("${elasticsearch.host}")
private String EsHost;
@Value("${elasticsearch.port}")
private int EsPort;
@Value("${elasticsearch.clustername}")
private String EsClusterName;
@Bean
public Client client() throws Exception {
Settings esSettings = Settings.settingsBuilder()
.put("cluster.name", EsClusterName)
.build();
//https://www.elastic.co/guide/en/elasticsearch/guide/current/_transport_client_versus_node_client.html
return TransportClient.builder()
.settings(esSettings)
.build()
.addTransportAddress(
new InetSocketTransportAddress(InetAddress.getByName(EsHost), EsPort));
}
@Bean
public ElasticsearchOperations elasticsearchTemplate() throws Exception {
return new ElasticsearchTemplate(client());
}
//Embedded Elasticsearch Server
/*@Bean
public ElasticsearchOperations elasticsearchTemplate() {
return new ElasticsearchTemplate(nodeBuilder().local(true).node().client());
}*/
}4.开发测试应用程序
让我们开发一个测试应用程序来测试我们的代码。
BookServiceTest.java
package com.mkyong;
import com.mkyong.book.model.Book;
import com.mkyong.book.service.BookService;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.elasticsearch.core.ElasticsearchTemplate;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.ArrayList;
import java.util.List;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.Assert.*;
@RunWith(SpringRunner.class)
@SpringBootTest(classes = Application.class)
public class BookServiceTest {
@Autowired
private BookService bookService;
@Autowired
private ElasticsearchTemplate esTemplate;
@Before
public void before() {
esTemplate.deleteIndex(Book.class);
esTemplate.createIndex(Book.class);
esTemplate.putMapping(Book.class);
esTemplate.refresh(Book.class);
}
@Test
public void testSave() {
Book book = new Book("1001", "Elasticsearch Basics", "Rambabu Posa", "23-FEB-2017");
Book testBook = bookService.save(book);
assertNotNull(testBook.getId());
assertEquals(testBook.getTitle(), book.getTitle());
assertEquals(testBook.getAuthor(), book.getAuthor());
assertEquals(testBook.getReleaseDate(), book.getReleaseDate());
}
@Test
public void testFindOne() {
Book book = new Book("1001", "Elasticsearch Basics", "Rambabu Posa", "23-FEB-2017");
bookService.save(book);
Book testBook = bookService.findOne(book.getId());
assertNotNull(testBook.getId());
assertEquals(testBook.getTitle(), book.getTitle());
assertEquals(testBook.getAuthor(), book.getAuthor());
assertEquals(testBook.getReleaseDate(), book.getReleaseDate());
}
@Test
public void testFindByTitle() {
Book book = new Book("1001", "Elasticsearch Basics", "Rambabu Posa", "23-FEB-2017");
bookService.save(book);
List<Book> byTitle = bookService.findByTitle(book.getTitle());
assertThat(byTitle.size(), is(1));
}
@Test
public void testFindByAuthor() {
List<Book> bookList = new ArrayList<>();
bookList.add(new Book("1001", "Elasticsearch Basics", "Rambabu Posa", "23-FEB-2017"));
bookList.add(new Book("1002", "Apache Lucene Basics", "Rambabu Posa", "13-MAR-2017"));
bookList.add(new Book("1003", "Apache Solr Basics", "Rambabu Posa", "21-MAR-2017"));
bookList.add(new Book("1007", "Spring Data + ElasticSearch", "Rambabu Posa", "01-APR-2017"));
bookList.add(new Book("1008", "Spring Boot + MongoDB", "Mkyong", "25-FEB-2017"));
for (Book book : bookList) {
bookService.save(book);
}
Page<Book> byAuthor = bookService.findByAuthor("Rambabu Posa", new PageRequest(0, 10));
assertThat(byAuthor.getTotalElements(), is(4L));
Page<Book> byAuthor2 = bookService.findByAuthor("Mkyong", new PageRequest(0, 10));
assertThat(byAuthor2.getTotalElements(), is(1L));
}
@Test
public void testDelete() {
Book book = new Book("1001", "Elasticsearch Basics", "Rambabu Posa", "23-FEB-2017");
bookService.save(book);
bookService.delete(book);
Book testBook = bookService.findOne(book.getId());
assertNull(testBook);
}
}5.运行Spring Boot Application
5.1要运行这个演示，我们应该按照以下这些步骤：
1、安装Java并设置JAVA_HOME和PATH变量。
2、安装Maven。
3、安装Elasticsearch 2.4.0
这里做一个假设路径：ELASTICSEARCH_HOME = C：\ elasticsearch-2.4.0
4、配置ElasticSearch
打开$ {ELASTICSEARCH_HOME} \ config \ elasticsearch.yml并添加以下配置
cluster.name: mkyong-cluster
5、启动Elasticsearch实例
5.2运行Spring Boot Application，它会将3个book对象插入到Elastic Server中。
Application.java
package com.mkyong;
import com.mkyong.book.model.Book;
import com.mkyong.book.service.BookService;
import org.elasticsearch.client.Client;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.elasticsearch.core.ElasticsearchOperations;
import java.util.Map;
@SpringBootApplication
public class Application implements CommandLineRunner {
@Autowired
private ElasticsearchOperations es;
@Autowired
private BookService bookService;
public static void main(String args[]) {
SpringApplication.run(Application.class, args);
}
@Override
public void run(String... args) throws Exception {
printElasticSearchInfo();
bookService.save(new Book("1001", "Elasticsearch Basics", "Rambabu Posa", "23-FEB-2017"));
bookService.save(new Book("1002", "Apache Lucene Basics", "Rambabu Posa", "13-MAR-2017"));
bookService.save(new Book("1003", "Apache Solr Basics", "Rambabu Posa", "21-MAR-2017"));
//fuzzey search
Page<Book> books = bookService.findByAuthor("Rambabu", new PageRequest(0, 10));
//List<Book> books = bookService.findByTitle("Elasticsearch Basics");
books.forEach(x -> System.out.println(x));
}
//useful for debug, print elastic search details
private void printElasticSearchInfo() {
System.out.println("--ElasticSearch--");
Client client = es.getClient();
Map<String, String> asMap = client.settings().getAsMap();
asMap.forEach((k, v) -> {
System.out.println(k + " = " + v);
});
System.out.println("--ElasticSearch--");
}
}输出结果：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.1.RELEASE)
//...
--ElasticSearch--
client.type = transport
cluster.name = mkyong-cluster
name = Baal
network.server = false
node.client = true
transport.ping_schedule = 5s
--ElasticSearch--
Book{id='1001', title='Elasticsearch Basics', author='Rambabu Posa', releaseDate='23-FEB-2017'}
Book{id='1002', title='Apache Lucene Basics', author='Rambabu Posa', releaseDate='13-MAR-2017'}
Book{id='1003', title='Apache Solr Basics', author='Rambabu Posa', releaseDate='21-MAR-2017'}
//...当我们运行应用程序时，我们的数据存储在$ {ELASTICSEARCH_HOME} \ data \ mkyong-cluster中了。
5.3 Maven打包一下并且运行它。
运行结果：
$ mvn package $ java -jar target/springboot-springdata-elasticsearch-example-1.0.jar
5.4用cURL工具测试一下。
运行结果：
C:\curl-7.53.1\bin>curl "http://localhost:9200/mkyong/books/_search?pretty=true"
{
"took" : 3,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
"total" : 3,
"max_score" : 1.0,
"hits" : [ {
"_index" : "mkyong",
"_type" : "books",
"_id" : "1001",
"_score" : 1.0,
"_source" : {
"id" : "1001",
"title" : "Elasticsearch Basics",
"author" : "Rambabu Posa",
"releaseDate" : "23-FEB-2017"
}
}, {
"_index" : "mkyong",
"_type" : "books",
"_id" : "1002",
"_score" : 1.0,
"_source" : {
"id" : "1002",
"title" : "Apache Lucene Basics",
"author" : "Rambabu Posa",
"releaseDate" : "13-MAR-2017"
}
}, {
"_index" : "mkyong",
"_type" : "books",
"_id" : "1003",
"_score" : 1.0,
"_source" : {
"id" : "1003",
"title" : "Apache Solr Basics",
"author" : "Rambabu Posa",
"releaseDate" : "21-MAR-2017"
}
} ]
}
}运行结果：
C:\curl-7.53.1\bin>curl "http://localhost:9200/mkyong/books/_search?q=_id:1003&pretty=true"
{
"took" : 3,
"timed_out" : false,
"_shards" : {
"total" : 5,
"successful" : 5,
"failed" : 0
},
"hits" : {
"total" : 1,
"max_score" : 1.0,
"hits" : [ {
"_index" : "mkyong",
"_type" : "books",
"_id" : "1003",
"_score" : 1.0,
"_source" : {
"id" : "1003",
"title" : "Apache Solr Basics",
"author" : "Rambabu Posa",
"releaseDate" : "21-MAR-2017"
}
} ]
}
}相关链接
官网：
https://github.com/spring-projects/spring-data-elasticsearch
版本约束相关：
https://github.com/spring-projects/spring-data-elasticsearch/wiki/Spring-Data-Elasticsearch---Spring-Boot---version-matrix
来源：mkyong.com
链接：https://www.mkyong.com
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