初始化
编辑初始化编辑
可以通过相应的 RestClientBuilder
类构建 RestClient
实例,该类通过 RestClient#builder(HttpHost...)
静态方法创建。 唯一需要的参数是客户端将与之通信的一个或多个主机,作为 HttpHost 的实例提供,如下所示
RestClient restClient = RestClient.builder( new HttpHost("localhost", 9200, "http"), new HttpHost("localhost", 9201, "http")).build();
RestClient
类是线程安全的,理想情况下与其使用的应用程序具有相同的生命周期。 当不再需要它时,关闭它很重要,以便正确释放它使用的所有资源,以及底层 http 客户端实例及其线程
restClient.close();
RestClientBuilder
还允许在构建 RestClient
实例时选择性地设置以下配置参数
RestClientBuilder builder = RestClient.builder( new HttpHost("localhost", 9200, "http")); Header[] defaultHeaders = new Header[]{new BasicHeader("header", "value")}; builder.setDefaultHeaders(defaultHeaders);
RestClientBuilder builder = RestClient.builder( new HttpHost("localhost", 9200, "http")); builder.setFailureListener(new RestClient.FailureListener() { @Override public void onFailure(Node node) { } });
RestClientBuilder builder = RestClient.builder( new HttpHost("localhost", 9200, "http")); builder.setNodeSelector(NodeSelector.SKIP_DEDICATED_MASTERS);
RestClientBuilder builder = RestClient.builder( new HttpHost("localhost", 9200, "http")); builder.setRequestConfigCallback( new RestClientBuilder.RequestConfigCallback() { @Override public RequestConfig.Builder customizeRequestConfig( RequestConfig.Builder requestConfigBuilder) { return requestConfigBuilder.setSocketTimeout(10000); } });
设置一个回调,允许修改默认请求配置(例如请求超时、身份验证或 |
RestClientBuilder builder = RestClient.builder( new HttpHost("localhost", 9200, "http")); builder.setHttpClientConfigCallback(new HttpClientConfigCallback() { @Override public HttpAsyncClientBuilder customizeHttpClient( HttpAsyncClientBuilder httpClientBuilder) { return httpClientBuilder.setProxy( new HttpHost("proxy", 9000, "http")); } });
设置一个回调,允许修改 http 客户端配置(例如,通过 ssl 进行加密通信,或 |