java如何通过clickhouse-http-client 实现连接clickhouse
时间: 2024-05-12 18:11:24 浏览: 271
要通过clickhouse-http-client实现连接ClickHouse,首先需要添加依赖,然后创建ClickHouseClient对象并配置相关参数。以下是具体步骤:
1. 添加依赖
在项目的pom.xml文件中添加clickhouse-http-client的依赖:
```xml
<dependency>
<groupId>ru.yandex.clickhouse</groupId>
<artifactId>clickhouse-jdbc</artifactId>
<version>0.3.1-patch1</version>
</dependency>
```
2. 创建ClickHouseClient对象并配置参数
```java
import ru.yandex.clickhouse.ClickHouseDataSource;
import ru.yandex.clickhouse.settings.ClickHouseProperties;
public class ClickHouseConnection {
public static void main(String[] args) {
// 创建ClickHouseProperties对象并设置相关参数
ClickHouseProperties properties = new ClickHouseProperties();
properties.setUser("default");
properties.setPassword("");
properties.setDatabase("default");
// 创建ClickHouseDataSource对象
ClickHouseDataSource dataSource = new ClickHouseDataSource("jdbc:clickhouse://localhost:8123", properties);
// 使用dataSource获取连接并执行查询操作
try (Connection connection = dataSource.getConnection()) {
Statement statement = connection.createStatement();
ResultSet resultSet = statement.executeQuery("SELECT 1");
while (resultSet.next()) {
System.out.println(resultSet.getInt(1));
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
```
以上代码示例展示了如何使用clickhouse-http-client连接到本地运行的ClickHouse服务器,并执行一个简单的查询操作。请根据实际情况修改连接参数和查询语句。
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