ClickHouse工具类

依赖包引入

<dependency>
	<groupId>ru.yandex.clickhousegroupId>
	<artifactId>clickhouse-jdbcartifactId>
	<version>0.2.6version>
dependency>

<dependency>
	<groupId>com.alibabagroupId>
	<artifactId>druidartifactId>
	<version>1.2.4version>
dependency>

数据源加载

import com.alibaba.druid.pool.DruidDataSource;
import com.paratera.console.datasync.constans.DataSyncConstants;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import ru.yandex.clickhouse.ClickHouseConnection;

import javax.sql.DataSource;
import java.sql.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * 德鲁伊连接池，实例化clickhouse连接对象
 *
 * @author huxiang
 */
@Data
@Configuration
@ConfigurationProperties(prefix = "clickhouse")
@Slf4j
public class ClickHouseDataSource {

    private String driverClassName;
    private String url;
    private String username;
    private String password;
    private Integer initialSize;
    private Integer maxActive;
    private Integer minIdle;
    private Integer maxWait;

    /**
     * 连接对象
     *
     * @return Connection
     * @throws SQLException
     */
    @Bean("clickhouseConnection")
    public Connection getConn() throws SQLException {
        DruidDataSource datasource = new DruidDataSource();
        datasource.setUrl(url);
        datasource.setDriverClassName(driverClassName);
        datasource.setInitialSize(initialSize);
        datasource.setMinIdle(minIdle);
        datasource.setMaxActive(maxActive);
        datasource.setMaxWait(maxWait);
        datasource.setUsername(username);
        datasource.setPassword(password);
        datasource.setValidationQuery("SELECT 1");
        datasource.setTestWhileIdle(true);
        return datasource.getConnection();
    }
}

操作工具类

import com.paratera.console.datasync.constans.DataSyncConstants;
import lombok.extern.slf4j.Slf4j;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.sql.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * clickhouse 工具类
 *
 * @author huxiang
 *
 */
@Slf4j
@Component
public class ClickHouseUtils {

    @Autowired
    private RabbitTemplate rabbitTemplate;

    @Value("${clickhouse.url}")
    private String url;

    @Resource(name = "clickhouseConnection")
    private Connection connection;

    /**
     * 执行无返回sql
     *
     * @param sql
     */
    public void execSQL(String sql) {
        log.debug("cliockhouse 执行sql：" + sql);
        try (Statement statement = connection.createStatement()) {
            statement.executeQuery(sql);
        } catch (SQLException e) {
            sendMessage2WxRobot(e);
        }
    }

    /**
     * 执行有返回结果sql
     *
     * @param sql
     * @return
     */
    public List<Map> exeSql(String sql) {
        log.info("cliockhouse 执行sql：" + sql);
        try (Statement statement = connection.createStatement();
             ResultSet results = statement.executeQuery(sql)) {
            ResultSetMetaData rsmd = results.getMetaData();
            List<Map> list = new ArrayList();
            while (results.next()) {
                Map row = new HashMap();
                for (int i = 1; i <= rsmd.getColumnCount(); i++) {
                    row.put(rsmd.getColumnName(i), results.getString(rsmd.getColumnName(i)));
                }
                list.add(row);
            }

            return list;
        } catch (SQLException e) {
            sendMessage2WxRobot(e);
        }
        return Collections.emptyList();
    }
}