Es的jdbc的配置连接

Es不允许免费版的jdbc连接，但可以免费使用30天，社区的政策是

修改政策

 curl -X POST "localhost:9200/_license/start_trial?acknowledge=true&pretty"

ES的mavn配置

        <dependency>
            <groupId>org.elasticsearch.plugin</groupId>
            <artifactId>x-pack-sql-jdbc</artifactId>
            <version>7.8.0</version>
        </dependency>
          <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.10.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.10.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.10.1</version>
        </dependency>

代码连接

import java.sql.*;


public class Sql_Jdbc {
    public static void main(String[] args) throws Exception {
       
        Connection connection=DriverManager.getConnection("jdbc:es://http://hadoop101:9200?timezone=UTC&page.size=250");
        Statement statement = connection.createStatement();
        ResultSet results = statement.executeQuery("select * from item LIMIT 5");

        while (results.next()) {

            System.out.println(results.getString(2));

        }
    }
}

注意
es的sql的where操作值支持keyword类型，也有可能我的mapping设置的问题