[大数据]java操作需要用户名密码验证的elasticsearch

给大家一个小例子，按照这样写，添加上用户名和密码就可以了

//es 有用户名和密码
RestHighLevelClient esClient = null;
//初始化ES操作客户端
final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY,
        new UsernamePasswordCredentials("elastic", "123456"));  //es账号密码
esClient =new RestHighLevelClient(
        RestClient.builder(
                new HttpHost("127.0.0.1",9200)
        ).setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
            public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                httpClientBuilder.disableAuthCaching();
                return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
            }
        })
);