使用SQL语法来查询Elasticsearch：Elasticsearch-SQL_maven elasticsearch-sql-优快云博客

本文介绍了如何使用 Elasticsearch 的 SQL 接口进行数据查询。通过 Maven 引入必要的依赖，并展示了如何配置数据源及执行 SQL 查询的具体代码示例。

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Elasticsearch SQL函数大全：http://www.open-open.com/lib/view/open1447747736056.html

maven引用：

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>2.4.1</version>
</dependency>
<dependency>
    <groupId>org.nlpcn</groupId>
    <artifactId>elasticsearch-sql</artifactId>
    <version>2.4.1.0</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.26</version>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
</dependency>

Properties properties = new Properties();
properties.put("url", "jdbc:elasticsearch://192.168.1.101:9300/");
DruidDataSource dds = (DruidDataSource) ElasticSearchDruidDataSourceFactory
        .createDataSource(properties);
dds.setInitialSize(1);
Connection connection = dds.getConnection();
String sql2 = "select * FROM myindex";
PreparedStatement ps = connection.prepareStatement(sql2);
ResultSet resultSet = ps.executeQuery();
while (resultSet.next()) {
    //sql对应输出
    System.out.println(resultSet.getString("字段名") );

}
ps.close();
connection.close();
dds.close();