[英]Spring data elasticsearch unable to connect to elasticsearch instance
How to understand a spring-doc ? 如何理解spring-doc ? The example provided doesn't work. 提供的示例不起作用。
I am unable to bind together the pieces to form a basic example of saving and querying elasticsearch using Spring-Data-Elastic search. 我无法将各个部分绑定在一起,形成使用Spring-Data-Elastic搜索保存和查询elasticsearch的基本示例。 Can someone, point to some resource which actually works? 有人可以指出一些实际有效的资源吗?
All classes are in the package elasticsearch
. 所有类都在包elasticsearch
。 Anyhow here is my code: 无论如何,这是我的代码:
@SpringBootApplication
public class Application {
@Autowired
private MovieRepository repository;
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
public void run(String... args) throws Exception {
// save a couple of movies
repository.save(new Movie("tt1979320", "Rush", 2013, Arrays.asList("Action", "Biography", "Drama")));
repository.save(new Movie("tt0111161", "The Shawshank Redemption", 1994, Arrays.asList("Crime", "Drama")));
}
}
Pojo 波乔
@Document(indexName = "moviedb", type = "movie")
public class Movie {
@Id
private String id;
private String name;
private Integer year;
private List<String> genre;
public Movie() {
}
public Movie(String id, String name, Integer year, List<String> genre) {
super();
this.id = id;
this.name = name;
this.year = year;
this.genre = genre;
}
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 Integer getYear() {
return year;
}
public void setYear(Integer year) {
this.year = year;
}
public List<String> getGenre() {
return genre;
}
public void setGenre(List<String> genre) {
this.genre = genre;
}
@Override
public String toString() {
return "Movie [id=" + id + ", name=" + name + ", year=" + year + ", genre=" + genre + "]";
}
}
Spring Data repo for ElasticSearch 用于ElasticSearch的Spring数据仓库
@Repository
public interface MovieRepository extends ElasticsearchRepository<Movie, String>{
List<Movie> findByName(String name);
List<Movie> findByYear(Integer year);
List<Movie> findByGenre(List<String> genre);
}
Service class 服务等级
@Service
public class MovieService{
@Autowired
private MovieRepository repository;
public List<Movie> findByName(String name) {
return repository.findByName(name);
}
public List<Movie> findByYear(Integer year) {
return repository.findByYear(year);
}
public List<Movie> findByGenre(List<String> genre) {
return repository.findByGenre(genre);
}
}
pom.xml 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>
<groupId>elasticsearch</groupId>
<artifactId>spring-data-guide</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>gs-accessing-data-elasticsearch</name>
<description>Spring Data for Elasticsearch guide</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.1.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>
</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>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Some examples have created an Elasticsearch template with this. 一些示例以此创建了一个Elasticsearch模板。 I haven't quite understood why is the Elasticsearch template required and how to create one. 我还不太了解为什么需要Elasticsearch模板以及如何创建一个模板。
I used elasticsearch 1.7 with this and received the following error: 我对此使用了Elasticsearch 1.7,并收到以下错误:
java.lang.NullPointerException: null
at org.elasticsearch.transport.netty.MessageChannelHandler.handleException(MessageChannelHandler.java:179) ~[elasticsearch-2.4.4.jar:2.4.4]
at org.elasticsearch.transport.netty.MessageChannelHandler.handlerResponseError(MessageChannelHandler.java:174) ~[elasticsearch-2.4.4.jar:2.4.4]
at org.elasticsearch.transport.netty.MessageChannelHandler.messageReceived(MessageChannelHandler.java:122) ~[elasticsearch-2.4.4.jar:2.4.4]
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:443) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108) [netty-3.10.6.Final.jar:na]
at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42) [netty-3.10.6.Final.jar:na]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_112]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_112]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_112]
Running with elasticsearch 2.3, I am getting the following error: 使用elasticsearch 2.3运行时,出现以下错误:
2017-02-17 17:52:00.147 WARN 16795 --- [ main] org.elasticsearch.client.transport : [Astron] node {#transport#-1}{127.0.0.1}{127.0.0.1:9300} not part of the cluster Cluster [elasticsearch], ignoring...
2017-02-17 17:52:00.415 ERROR 16795 --- [ main] .d.e.r.s.AbstractElasticsearchRepository : failed to load elasticsearch nodes : org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available: [{#transport#-1}{127.0.0.1}{127.0.0.1:9300}]
To me it seems like the clusternames do not match. 在我看来,群集名称不匹配。 Try this parameters: 试试这个参数:
Properties in YAML Syntax: YAML语法中的属性:
### elastic properties
spring.data:
elasticsearch:
cluster-name: yourclustername
cluster-nodes: localhost:9300
repositories.enabled: true
youclustername has to match the clustername you gave in the elasticsearch.yml config on paramaeter "cluster.name:". youclustername必须与参数“ cluster.name:”上的elasticsearch.yml配置中提供的集群名称匹配。
The cluster-nodes must match the "network.host" from elasticsearch.yml (+ the port which is default 9300) 群集节点必须与elasticsearch.yml中的“ network.host”匹配(+端口,默认为9300)
Next you need to scan for the repositories like this: 接下来,您需要像这样扫描存储库:
@SpringBootApplication
@EnableElasticsearchRepositories(basePackages = "elasticsearch")
public class Application {
...
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