无法使用Spring Boot连接到Impala数据库

Question

I'm trying to connect to an impala db in spring boot, however I've been getting various errors such as Cannot determine embedded database driver class for database type NONE

I have been trying to debug the errors. For this error, I tried specifying the class from another post , but it did not fix the problem

I have the jdbc jars located in the project, and am able to connect with them when not using spring-boot

Code

application.properties

where myHost is a server running the impala daemon

app.datasource.url=jdbc:impala://myHost:21050/default;auth=noSasl
app.datasource.driver-class-name=com.cloudera.impala.jdbc41.Driver

DemoApplication.java (main class)

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {
    public static void main(String[] args) {
    SpringApplication.run(DemoApplication.class, args);
    }
}

ImpalaDao

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import javax.sql.DataSource;

@Repository
public class ImpalaDao {
    @Autowired
    private JdbcTemplate jdbcTemplate;
}

Answer 1

spring boot does not recognize the impala driver. In the autoconfigurations of spring Boot does not have autoconfiguracion of Impala. You have to configure it ad-hoc or make your own autoconfiguration.