SpringBoot+ElasticSearch+X-pack-Toy模板网

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ElasticSearch开启X-pack权限认证后，连接es就存在用户名和密码的校验，如果连接时没有设置账号及密码，则会出现无权限的情况。本文就讲述spring boot如何在连接es时设置用户名密码，主要是RestHighLevelClient配置信息的修改。文章来源地址https://www.toymoban.com/news/detail-511184.html

1 添加pom依赖

       <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>7.8.1</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>7.8.1</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-client</artifactId>
            <version>7.8.1</version>
        </dependency>

2 原RestHighLevelClient设置

    @Bean
    public RestHighLevelClient getRestHighLevelClient() {
        RestClientBuilder builder = RestClient.builder(hostList.toArray(new HttpHost[0]));
        // 异步httpclient连接延时配置
        builder.setRequestConfigCallback(requestConfigBuilder -> {
            requestConfigBuilder.setConnectTimeout(connectTimeOut);
            requestConfigBuilder.setSocketTimeout(socketTimeOut);
            requestConfigBuilder.setConnectionRequestTimeout(connectionRequestTimeOut);
            return requestConfigBuilder;
        });
        // 异步httpclient连接数配置
        builder.setHttpClientConfigCallback(httpClientBuilder -> {
            httpClientBuilder.setMaxConnTotal(maxConnectNum);
            httpClientBuilder.setMaxConnPerRoute(maxConnectPerRoute);
            return httpClientBuilder;
        });
        RestHighLevelClient client = new RestHighLevelClient(builder);
        return client;
    }

3 现RestHighLevelClient设置

    @Bean
    public RestHighLevelClient getRestHighLevelClient() {
        RestClientBuilder builder = RestClient.builder(hostList.toArray(new HttpHost[0]));
        // 异步httpclient连接延时配置
        builder.setRequestConfigCallback(requestConfigBuilder -> {
            requestConfigBuilder.setConnectTimeout(connectTimeOut);
            requestConfigBuilder.setSocketTimeout(socketTimeOut);
            requestConfigBuilder.setConnectionRequestTimeout(connectionRequestTimeOut);
            return requestConfigBuilder;
        });

        // 用户认证对象
        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        // 设置账号密码
        credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(userName,password));

        // 异步httpclient连接数配置
        builder.setHttpClientConfigCallback(httpClientBuilder -> {
            httpClientBuilder.setMaxConnTotal(maxConnectNum);
            httpClientBuilder.setMaxConnPerRoute(maxConnectPerRoute);

            // 设置账号密码
            httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
            return httpClientBuilder;
        });


        builder.setHttpClientConfigCallback(httpAsyncClientBuilder ->
                httpAsyncClientBuilder.setDefaultCredentialsProvider(credentialsProvider));

        RestHighLevelClient client = new RestHighLevelClient(builder);
        return client;
    }