SpringBoot配置Clickhouse的示例代码
作者：元宇宙-Metaverse
这篇文章主要介绍了SpringBoot配置Clickhouse的示例代码，代码简单易懂，对大家的学习或工作具有一定的参考价值,需要的朋友可以参考下
一、加入clickhouse jar包依赖
<dependency>
<groupId>ru.yandex.clickhouse</groupId>
<artifactId>clickhouse-jdbc</artifactId>
<version>0.1.53</version>
</dependency>二、配置Clickhouse数据库连接属性配置文件，clickhouse默认没有密码
spring:
datasource:
clickhouse:
address: jdbc:clickhouse://127.0.0.1:8123
username: default
password:
db: system
socketTimeout: 600000三、编写Clickhouse数据库连接操作工具类
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import ru.yandex.clickhouse.ClickHouseConnection;
import ru.yandex.clickhouse.ClickHouseDataSource;
import ru.yandex.clickhouse.settings.ClickHouseProperties;
import java.sql.*;
import java.util.*;
@Slf4j
@Component
public class ClickHouseConfig {
private static String clickhouseAddress;
private static String clickhouseUsername;
private static String clickhousePassword;
private static String clickhouseDB;
private static Integer clickhouseSocketTimeout;
@Value("${spring.datasource.clickhouse.address}")
public void setClickhouseAddress(String address) {
ClickHouseConfig.clickhouseAddress = address;
}
@Value("${spring.datasource.clickhouse.username}")
public void setClickhouseUsername(String username) {
ClickHouseConfig.clickhouseUsername = username;
@Value("${spring.datasource.clickhouse.password}")
public void setClickhousePassword(String password) {
ClickHouseConfig.clickhousePassword = password;
@Value("${spring.datasource.clickhouse.db}")
public void setClickhouseDB(String db) {
ClickHouseConfig.clickhouseDB = db;
@Value("${spring.datasource.clickhouse.socketTimeout}")
public void setClickhouseSocketTimeout(Integer socketTimeout) {
ClickHouseConfig.clickhouseSocketTimeout = socketTimeout;
public static Connection getConn() {
ClickHouseConnection conn = null;
ClickHouseProperties properties = new ClickHouseProperties();
properties.setUser(clickhouseUsername);
properties.setPassword(clickhousePassword);
properties.setDatabase(clickhouseDB);
properties.setSocketTimeout(clickhouseSocketTimeout);
ClickHouseDataSource clickHouseDataSource = new ClickHouseDataSource(clickhouseAddress,properties);
try {
conn = clickHouseDataSource.getConnection();
return conn;
} catch (SQLException e) {
e.printStackTrace();
}
return null;
public static List<Map<String,String>> exeSql(String sql){
log.info("cliockhouse 执行sql：" + sql);
Connection connection = getConn();
Statement statement = connection.createStatement();
ResultSet results = statement.executeQuery(sql);
ResultSetMetaData rsmd = results.getMetaData();
List<Map<String,String>> list = new ArrayList<>();
while(results.next()){
Map<String,String> 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;
}四、是用测试方法执行sql查询数据
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
import java.util.Map;
@RunWith(SpringRunner.class)
@SpringBootTest
@Slf4j
public class ClickHouseConfigTest {
@Test
public void exeSql() {
log.info("===========测试开始============");
String sql="select cluster,shard_num from clusters";
List<Map<String,String>> result= ClickHouseConfig.exeSql(sql);
log.info("===========查询技术============");
log.info("clickhouse查询结果为：{}",result);
}
}测试成功
转自：https://www.dianjilingqu.com/
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