Question

以下是我们正在使用的Maven版本

 <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <artifactId>elasticsearch-rest-high-level-client</artifactId>
        <version>5.6.13</version>
  </dependency>


    <dependency>
        <groupId>org.elasticsearch</groupId>
        <artifactId>elasticsearch</artifactId>
        <version>5.6.13</version>
    </dependency>



 private RestHighLevelClient buildRestClient(ElasticRequestVO elasticRequestVO) {
    String elasticHost =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticHost()) ? elasticRequestVO.getElasticHost()
                    : elasticSearchHost;
    int elasticPort =
            (elasticRequestVO.getElasticPort() != 0) ? elasticRequestVO.getElasticPort() : elasticSearchPort;
    String elasticUser =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticUser()) ? elasticRequestVO.getElasticUser()
                    : elasticSearchUser;
    String elasticPassword =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticPassword()) ? elasticRequestVO.getElasticPassword()
                    : elasticSearchPassword;
    HttpHost host = new HttpHost(elasticHost, elasticPort);
    RestClientBuilder restClientBuilder = RestClient.builder(host);

    Optional<String> encodedAuth = getAuthenticationHeader(elasticUser, elasticPassword);

    if (encodedAuth.isPresent()) {
        Header[] requestHeaders =
                new Header[] {new BasicHeader(org.apache.http.HttpHeaders.AUTHORIZATION, encodedAuth.get())};
        restClientBuilder.setDefaultHeaders(requestHeaders);
    }
    return new RestHighLevelClient(restClientBuilder.build());
}

如何关闭RestHighLevelClient？

Answer 1

如果您将看到在最新版本之一中如何实现关闭，例如6.2.4您会发现RestHighLevelClient刚刚释放了RestClient。
因此，对于关闭，我可以为您提供只需调用restHighLevelClient.getLowLevelClient()并关闭其余客户端lowLevelRestClient.close()的功能。

P.S。如果只是看一下源代码，就会注意到这只是其余客户端的包装。

Answer 2

要返回RestHighLevelClient，请从buildRestClient()重新调动RestClient

如果代码示例在这里

private RestClient buildRestClient(ElasticRequestVO elasticRequestVO) {
    String elasticHost =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticHost()) ? elasticRequestVO.getElasticHost()
                    : elasticSearchHost;
    int elasticPort =
            (elasticRequestVO.getElasticPort() != 0) ? elasticRequestVO.getElasticPort() : elasticSearchPort;
    String elasticUser =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticUser()) ? elasticRequestVO.getElasticUser()
                    : elasticSearchUser;
    String elasticPassword =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticPassword()) ? elasticRequestVO.getElasticPassword()
                    : elasticSearchPassword;
    HttpHost host = new HttpHost(elasticHost, elasticPort);
    RestClientBuilder restClientBuilder = RestClient.builder(host);

    Optional<String> encodedAuth = getAuthenticationHeader(elasticUser, elasticPassword);

    if (encodedAuth.isPresent()) {
        Header[] requestHeaders =
                new Header[] {new BasicHeader(org.apache.http.HttpHeaders.AUTHORIZATION, encodedAuth.get())};
        restClientBuilder.setDefaultHeaders(requestHeaders);
    }
    return restClientBuilder.build();
}

Answer 3

我的RestHighLevelClient版本是5.6.3，找不到像restHighLevelClient.getLowLevelClient（）或restHighLevelClient.close（）这样的方法，所以我使用反射来使restClient关闭

Field restClientField = RestHighLevelClient.class.getDeclaredField("client");
restClientField.setAccessible(true);
RestClient restclient = (RestClient)restClientField.get(restHighLevelClient);
restClient.close();

Answer 4

我有同样的问题。要关闭连接，您必须更改方法：

EventBus.$on('Logged-Out',() => {
                this.isUserLoggedIn = false
                localStorage.setItem('JWT', '')
            })

            EventBus.$on('Logged-in',() => {
                this.isUserLoggedIn = true
            })

然后，当您调用方法时，就可以使用

private RestClient buildRestClient(ElasticRequestVO elasticRequestVO) {
    String elasticHost =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticHost()) ? elasticRequestVO.getElasticHost()
                    : elasticSearchHost;
    int elasticPort =
            (elasticRequestVO.getElasticPort() != 0) ? elasticRequestVO.getElasticPort() : elasticSearchPort;
    String elasticUser =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticUser()) ? elasticRequestVO.getElasticUser()
                    : elasticSearchUser;
    String elasticPassword =
            StringUtils.isNotEmpty(elasticRequestVO.getElasticPassword()) ? elasticRequestVO.getElasticPassword()
                    : elasticSearchPassword;
    HttpHost host = new HttpHost(elasticHost, elasticPort);
    RestClientBuilder restClientBuilder = RestClient.builder(host);

    Optional<String> encodedAuth = getAuthenticationHeader(elasticUser, elasticPassword);

    if (encodedAuth.isPresent()) {
        Header[] requestHeaders =
                new Header[] {new BasicHeader(org.apache.http.HttpHeaders.AUTHORIZATION, encodedAuth.get())};
        restClientBuilder.setDefaultHeaders(requestHeaders);
    }
    return restClientBuilder.build();
}

然后做

final RestClient restClient=buildRestClient(...);

在需要时。最后，关闭。

示例

new RestHighLevelClient(restClient)

如何关闭RestHighLevelClient 5.6.X

4 个答案: