基本身份验证
编辑基本身份验证编辑
可以通过在构建 RestClient 时通过其构建器提供 HttpClientConfigCallback 来配置基本身份验证。该接口有一个方法，该方法接收 org.apache.http.impl.nio.client.HttpAsyncClientBuilder 的实例作为参数，并具有相同的返回类型。可以修改 HTTP 客户端构建器，然后返回。在以下示例中，我们设置了一个需要基本身份验证的默认凭据提供程序。
final CredentialsProvider credentialsProvider =
new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY,
new UsernamePasswordCredentials("user", "test-user-password"));
RestClientBuilder builder = RestClient.builder(
new HttpHost("localhost", 9200))
.setHttpClientConfigCallback(new HttpClientConfigCallback() {
@Override
public HttpAsyncClientBuilder customizeHttpClient(
HttpAsyncClientBuilder httpClientBuilder) {
return httpClientBuilder
.setDefaultCredentialsProvider(credentialsProvider);
}
});
可以禁用抢先身份验证，这意味着每个请求都将在没有授权标头的情况下发送，以查看它是否被接受，并且在收到 HTTP 401 响应后，它将使用基本身份验证标头重新发送完全相同的请求。如果您希望这样做，可以通过 HttpAsyncClientBuilder 禁用它。
final CredentialsProvider credentialsProvider =
new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY,
new UsernamePasswordCredentials("user", "test-user-password"));
RestClientBuilder builder = RestClient.builder(
new HttpHost("localhost", 9200))
.setHttpClientConfigCallback(new HttpClientConfigCallback() {
@Override
public HttpAsyncClientBuilder customizeHttpClient(
HttpAsyncClientBuilder httpClientBuilder) {
httpClientBuilder.disableAuthCaching();
return httpClientBuilder
.setDefaultCredentialsProvider(credentialsProvider);
}
});