我无法运行创建 Elastic-Search 的“Hello World”java 客户端的非常基本的程序。
该文档非常简洁地介绍了在这种情况下该怎么做。
这是我的代码:
find . -type f
./pom.xml
./src/main/java/examples/EsRoutingNodeClient.java
这两个文件如下所示。
包含代码的 Java 文件:
package examples;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.node.NodeBuilder;
public class EsRoutingNodeClient
{
private static final String ZEN_DISCOVERY_UNICAST_HOSTS = "[\"10.10.10.10:9200\"]"; // Used an actual ES master node's IP here
private static final String ES_PATH_HOME = "/Users/appuser/work/software/elasticsearch/dummy-path-home/";
private static final String ES_CLUSTER_NAME = "my-cluster";
private Client client;
private void createEsClient ()
{
Settings settings = Settings.settingsBuilder()
.put("http.enabled", false)
.put("discovery.zen.ping.multicast.enabled", false)
.put("discovery.zen.ping.unicast.hosts", ZEN_DISCOVERY_UNICAST_HOSTS)
.put("discovery.zen.minimum_master_nodes", 1)
.put("path.home", ES_PATH_HOME)
.build();
client =
NodeBuilder.nodeBuilder()
.settings(settings)
.clusterName(ES_CLUSTER_NAME)
.data(false)
.client(true)
.node().client();
}
public EsRoutingNodeClient ()
{
createEsClient();
}
public static void main (String args[])
{
new EsRoutingNodeClient();
}
}
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>examples</groupId>
<artifactId>es-node-client</artifactId>
<version>0.0.3-SNAPSHOT</version>
<packaging>jar</packaging>
<name>es-node-client</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>2.2.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.3</version>
<configuration />
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<artifactSet>
<excludes>
<exclude>org.slf4j:*</exclude>
<exlcude>com.esotericsoftware.kryo:kryo:*</exlcude>
</excludes>
</artifactSet>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>examples.EsRoutingNodeClient</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
最后我运行如下:
mvn clean package
java -jar target/es-node-client-0.0.3-SNAPSHOT.jar
我得到的异常(exception)是:
194) Error injecting constructor, java.lang.IllegalStateException: This is a proxy used to support circular references involving constructors. The object we're proxying is not constructed yet. Please wait until after injection has completed to use this object.
at org.elasticsearch.node.service.NodeService.<init>(Unknown Source)
while locating org.elasticsearch.node.service.NodeService
for parameter 5 at org.elasticsearch.action.admin.cluster.node.stats.TransportNodesStatsAction.<init>(Unknown Source)
while locating org.elasticsearch.action.admin.cluster.node.stats.TransportNodesStatsAction
for parameter 2 at org.elasticsearch.cluster.InternalClusterInfoService.<init>(Unknown Source)
while locating org.elasticsearch.cluster.InternalClusterInfoService
while locating org.elasticsearch.cluster.ClusterInfoService
for parameter 3 at org.elasticsearch.cluster.routing.allocation.AllocationService.<init>(Unknown Source)
while locating org.elasticsearch.cluster.routing.allocation.AllocationService
for parameter 3 at org.elasticsearch.cluster.metadata.MetaDataCreateIndexService.<init>(Unknown Source)
while locating org.elasticsearch.cluster.metadata.MetaDataCreateIndexService
for parameter 5 at org.elasticsearch.snapshots.RestoreService.<init>(Unknown Source)
while locating org.elasticsearch.snapshots.RestoreService
Caused by: java.lang.IllegalStateException: This is a proxy used to support circular references involving constructors. The object we're proxying is not constructed yet. Please wait until after injection has completed to use this object.
at org.elasticsearch.common.inject.internal.ConstructionContext$DelegatingInvocationHandler.invoke(ConstructionContext.java:103)
at com.sun.proxy.$Proxy11.setNodeService(Unknown Source)
at org.elasticsearch.node.service.NodeService.<init>(NodeService.java:77)
at sun.reflect.GeneratedConstructorAccessor4.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.elasticsearch.common.inject.DefaultConstructionProxyFactory$1.newInstance(DefaultConstructionProxyFactory.java:50)
at org.elasticsearch.common.inject.ConstructorInjector.construct(ConstructorInjector.java:86)
at org.elasticsearch.common.inject.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:104)
at org.elasticsearch.common.inject.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:47)
at org.elasticsearch.common.inject.InjectorImpl.callInContext(InjectorImpl.java:887)
at org.elasticsearch.common.inject.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:43)
at org.elasticsearch.common.inject.Scopes$1$1.get(Scopes.java:59)
at org.elasticsearch.common.inject.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:46)
at org.elasticsearch.common.inject.SingleParameterInjector.inject(SingleParameterInjector.java:42)
... more such lines
at org.elasticsearch.common.inject.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:46)
at org.elasticsearch.common.inject.InjectorBuilder$1.call(InjectorBuilder.java:201)
at org.elasticsearch.common.inject.InjectorBuilder$1.call(InjectorBuilder.java:193)
at org.elasticsearch.common.inject.InjectorImpl.callInContext(InjectorImpl.java:880)
at org.elasticsearch.common.inject.InjectorBuilder.loadEagerSingletons(InjectorBuilder.java:193)
at org.elasticsearch.common.inject.InjectorBuilder.injectDynamically(InjectorBuilder.java:175)
at org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:110)
at org.elasticsearch.common.inject.Guice.createInjector(Guice.java:93)
at org.elasticsearch.common.inject.Guice.createInjector(Guice.java:70)
at org.elasticsearch.common.inject.ModulesBuilder.createInjector(ModulesBuilder.java:46)
at org.elasticsearch.node.Node.<init>(Node.java:200)
at org.elasticsearch.node.Node.<init>(Node.java:128)
at org.elasticsearch.node.NodeBuilder.build(NodeBuilder.java:145)
at org.elasticsearch.node.NodeBuilder.node(NodeBuilder.java:152)
at examples.EsRoutingNodeClient.createEsClient(EsRoutingNodeClient.java:30)
at examples.EsRoutingNodeClient.<init>(EsRoutingNodeClient.java:46)
at examples.EsRoutingNodeClient.main(EsRoutingNodeClient.java:51)
194 errors
at org.elasticsearch.common.inject.internal.Errors.throwCreationExceptionIfErrorsExist(Errors.java:360)
at org.elasticsearch.common.inject.InjectorBuilder.injectDynamically(InjectorBuilder.java:178)
at org.elasticsearch.common.inject.InjectorBuilder.build(InjectorBuilder.java:110)
at org.elasticsearch.common.inject.Guice.createInjector(Guice.java:93)
at org.elasticsearch.common.inject.Guice.createInjector(Guice.java:70)
at org.elasticsearch.common.inject.ModulesBuilder.createInjector(ModulesBuilder.java:46)
at org.elasticsearch.node.Node.<init>(Node.java:200)
at org.elasticsearch.node.Node.<init>(Node.java:128)
at org.elasticsearch.node.NodeBuilder.build(NodeBuilder.java:145)
at org.elasticsearch.node.NodeBuilder.node(NodeBuilder.java:152)
at examples.EsRoutingNodeClient.createEsClient(EsRoutingNodeClient.java:30)
at examples.EsRoutingNodeClient.<init>(EsRoutingNodeClient.java:46)
at examples.EsRoutingNodeClient.main(EsRoutingNodeClient.java:51)
我的最终目标是在storm中使用路由节点客户端。
任何帮助将不胜感激。
谢谢!
最佳答案
从 1.4 升级到 2.4 时，我遇到了同样的问题。我不是 100% 为什么，但对我来说，这是由于指定单播主机所致。我通过 zip 下载使用默认值运行 ES。
首先，我将客户端节点(即我正在开发的应用程序)的端口设置为默认范围之外，认为我需要这样做以避免在同一个盒子上运行 2 个节点时发生冲突。当我这样做时，我的客户永远找不到主人。结果是 zen discovery 只 ping 其自身范围内的 5 个本地端口。在我弄清楚这一点之前(通过阅读 https://github.com/elastic/elasticsearch/blob/master/core/src/main/java/org/elasticsearch/discovery/zen/ping/unicast/UnicastZenPing.java )我添加了 unicast.host 以获得与您遇到的相同问题。删除这两个设置后，我的应用程序现在正在连接到我的 ES 服务器。
这是我的配置
cluster.name=elasticsearch
node.name=local-dev
node.master=false
node.data=false
path.home=${project.build.directory}/es
path.data=${project.build.directory}/es/data
path.logs=${project.build.directory}/es/logs
network.host=127.0.0.1
discovery.zen.minimum_master_nodes=1
代码
@Bean
public Node elasticSearchNode() throws Exception {
Settings settings = Settings.settingsBuilder().put(getProps()).build();
return nodeBuilder()
.settings(settings)
.client(true)
.node();
}
@Bean
public Client elasticSearchClient(Node node) throws Exception {
return node.client();
}
private Properties getProps() {
try {
String profile = getProfile();
log.info("Loading ES properties for env: {}", profile);
ClassPathResource resource = new ClassPathResource("es/es."+profile+".properties");
return PropertiesLoaderUtils.loadProperties(resource);
} catch (IOException e) {
log.error("Can not read property file");
throw new RuntimeException(e);
}
}
private String getProfile() {
return System.getProperty("env", "local");
}
关于java - 无法运行 "Hello World"Elastic-Search Java 客户端，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/35759866/