java - 尝试创建 TransportClient 时 Elasticsearch 5.1 错误 "java.lang.NoSuchFieldError: LUCENE_5_4_1"

Question

我正在尝试为 Elasticsearch 5.1 编写客户端，并尝试使用 TransportClient 对象，如此处所述 ( https://www.elastic.co/guide/en/elasticsearch/client/java-api/5.1/transport-client.html )。

为了测试此客户端，我有一个简单的 get 函数，该函数使用 ES 站点 ( https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/java-docs-get.html ) 上记录的 Get API。

但是，我的代码甚至不执行我的 get 函数，而是在创建我在客户端类的构造函数中创建的 PreBuiltTransportClient 对象时抛出错误。下面是代码片段。错误从第一行开始抛出。

PreBuiltTransportClient preBuiltTransportClient = new PreBuiltTransportClient(Settings.EMPTY);
try{
    this.esClient = (TransportClient) preBuiltTransportClient.addTransportAddress(
            new InetSocketTransportAddress(InetAddress.getByName(esHost), esPort));
} catch (UnknownHostException ex) {
    LOGGER.error("Host cannot be reached: ", ex);
    preBuiltTransportClient.close();
    this.esClient.close();
}

这是我使用 get API 测试客户端的方法。搜索值来自 elasticsearch github 示例 ( https://github.com/elastic/elasticsearch )。

//for testing purposes
public void testGet(String index, String type, String id) {
    GetResponse response = esClient.prepareGet(index, type, id).get();
    System.out.println("testGet response: " + response);
}

public static void main(String[] args) {
    ESClient = new ESClient("localhost", 9200);
    String index = "twitter"; 
    String type = "tweet";
    String id = "kimchy";
    client.testGet(index, type, id);
}

最后，下面是错误的完整堆栈跟踪:

Exception in thread "main" java.lang.NoSuchFieldError: LUCENE_5_4_1
at org.elasticsearch.Version.<clinit>(Version.java:57)
at org.elasticsearch.common.io.stream.StreamOutput.<init>(StreamOutput.java:74)
at org.elasticsearch.common.io.stream.BytesStreamOutput.<init>(BytesStreamOutput.java:60)
at org.elasticsearch.common.io.stream.BytesStreamOutput.<init>(BytesStreamOutput.java:57)
at org.elasticsearch.common.io.stream.BytesStreamOutput.<init>(BytesStreamOutput.java:47)
at org.elasticsearch.common.xcontent.XContentBuilder.builder(XContentBuilder.java:69)
at org.elasticsearch.common.settings.Setting.arrayToParsableString(Setting.java:726)
at org.elasticsearch.common.settings.Setting.lambda$listSetting$26(Setting.java:672)
at org.elasticsearch.common.settings.Setting$2.getRaw(Setting.java:676)
at org.elasticsearch.common.settings.Setting.lambda$listSetting$24(Setting.java:660)
at org.elasticsearch.common.settings.Setting.listSetting(Setting.java:665)
at org.elasticsearch.common.settings.Setting.listSetting(Setting.java:660)
at org.elasticsearch.common.network.NetworkService.<clinit>(NetworkService.java:50)
at org.elasticsearch.client.transport.TransportClient.newPluginService(TransportClient.java:91)
at org.elasticsearch.client.transport.TransportClient.buildTemplate(TransportClient.java:119)
at org.elasticsearch.client.transport.TransportClient.<init>(TransportClient.java:247)
at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:92)
at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:81)
at org.elasticsearch.transport.client.PreBuiltTransportClient.<init>(PreBuiltTransportClient.java:71)
at customclient.<init>(ESClient.java:43)
at customclient.main(ESClient.java:112)

我不确定这个错误是由什么引起的，或者我可能做错了什么，并且希望得到一些帮助!谢谢!

Answer 1

您不是应该拥有最新版本的Lucene吗？按照我下面发布的 ES 博客？

Today we are pleased to announce the release of Elasticsearch 5.1.1, based on Lucene 6.3.0.

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