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Spring Boot + Spring Data + Elasticsearch实例

baijin 2024-08-30 11:48:55 博客文章 2 ℃ 0 评论

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：

  1. Spring Boot 1.5.1.RELEASE

  2. Spring Boot Starter Data Elasticsearch 1.5.1.RELEASE

  3. Spring Data Elasticsearch 2.10.RELEASE

  4. Elasticsearch 2.4.4

  5. Maven

  6. 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-clusterelasticsearch.host = localhostelasticsearch.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;@SpringBootApplicationpublic 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 = transportcluster.name = mkyong-clustername = Baalnetwork.server = falsenode.client = truetransport.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

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