如何解决Elasticsearch rest 客户端 http over https 问题
我正在尝试以下 API,
@Autowire private final RestHighLevelClient restHighLevelClient;
var restClient = restHighLevelClient.getLowLevelClient();
Response response = null;
try {
var request = new Request("GET","/_cat/indices?v&format=json");
response = restClient.performRequest(request);
} catch (IOException e) {
log.warn(e.toString(),e);
}
var entity = response.getEntity();
if (entity != null) {
log.info("content:" + IoUtils.toString(entity.getContent(),StandardCharsets.UTF_8));
}
elasticsearch 服务器运行在 https 上,这是创建客户端的 bean
@Bean(destroyMethod = "close")
public RestHighLevelClient client() {
var connUri = URI.create(esClusterUrl);
String[] auth = connUri.getUserInfo().split(":");
var credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(
AuthScope.ANY,new UsernamePasswordCredentials(auth[0],auth[1]));
var builder =
RestClient.builder(new HttpHost(connUri.getHost(),connUri.getPort()))
.setHttpClientConfigCallback(
httpClientBuilder ->
httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));
return new RestHighLevelClient(builder);
我得到的错误响应是
2021-04-11 21:13:07.822 WARN 40680 --- [ main] com.document.Feed.util.ESMaintenance : org.elasticsearch.client.ResponseException: method [GET],host [http://yew-739425389.eu-west-1.bonsaisearch.net:443],URI [/_cat/indices?v&format=json],status line [HTTP/1.1 400 Bad Request]
<html>
<head><title>400 The plain HTTP request was sent to HTTPS port</title></head>
<body>
<center><h1>400 Bad Request</h1></center>
<center>The plain HTTP request was sent to HTTPS port</center>
</body>
</html>
这几乎是自我解释的,这意味着我应该对服务器进行 https 调用,而我正在执行 http 休息调用。分辨率是多少?
解决方法
通过在构建客户端时切换到 https 方案来解决。
var builder =
RestClient.builder(new HttpHost(connUri.getHost(),connUri.getPort(),"https"))
.setHttpClientConfigCallback(
httpClientBuilder ->
httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider));
return new RestHighLevelClient(builder);
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