impala之springBoot整合jdbc和Druid數據源

參考文章：SpringBoot整合JDBC和使用Druid數據源

SpringBoot多數據源使用impala連接

SpringBoot整合Mybatis連接Impala入門案例詳解

springboot中使用jdbc+impala+Kerberos+數據源查詢hive

目錄結構

src
├───main
│   ├───java
│   │   └───com
│   │       └───template
│   │           ├───common      # 公共部分
│   │           ├───config      # 配置、數據源
│   │           ├───domain      # DO、DTO、VO
│   │           ├───repository  # 數據庫訪問層
│   │           ├───service     # 邏輯層
│   │           │   └───impl    # 邏輯具體實現
│   │           ├───util        # 工具類
│   │           └───web         # api 接口
│   └───resources
│       ├───static              # 靜態資源文件
│       │   └───js              # 頁面依賴的javascript 文件
│       └───templates           # 頁面模板文件
└───test
    └───java
        └───com
            └───template
                ├───config
                └───repository

Pom.xml

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
 
		<!--引入druid數據源-->
		<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>druid</artifactId>
			<version>1.1.8</version>
		</dependency>
 
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
 
 
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

application.yml

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/SpringData01
    driver-class-name: com.mysql.jdbc.Driver
    type: com.alibaba.druid.pool.DruidDataSource
 
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
#   配置監控統計攔截的filters，去掉後監控界面sql無法統計，'wall'用於防火牆
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
    schema:
      - classpath:department.sql

# impala多數據源配置參考
---
# developer enviroment
spring:
  profiles: dev
  datasource:
    impala: 
      driver-class-name: com.cloudera.impala.jdbc41.Driver
      jdbc-url: jdbc:impala://xx:21050/default
   
---
# developer enviroment
spring:
  profiles: test
  datasource:
    impala: 
      driver-class-name: com.cloudera.impala.jdbc41.Driver
      jdbc-url: jdbc:impala://xx:21050/default
    
---
# developer enviroment
spring:
  profiles: prod
  datasource:
    impala: 
      driver-class-name: com.cloudera.impala.jdbc41.Driver
      jdbc-url: jdbc:impala://xx:21050/default

注意：每次運行SpringBoot主程序的時候會加載一遍sql文件，並且清空表的數據，所以運行一次之後記得註釋！

創建配置類

package com.atguigu.springboot.config;
 
import com.alibaba.druid.pool.DruidDataSource;
import com.alibaba.druid.support.http.StatViewServlet;
import com.alibaba.druid.support.http.WebStatFilter;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
import javax.sql.DataSource;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
 
@Configuration
public class DruidConfig {
 
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druid(){
       return  new DruidDataSource();
    }
 
    //配置Druid的監控
    //1、配置一個管理後臺的Servlet
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean bean = new ServletRegistrationBean(new StatViewServlet(), "/druid/*");
        Map<String,String> initParams = new HashMap<>();
 
        initParams.put("loginUsername","admin");
        initParams.put("loginPassword","123456");
        initParams.put("allow","");//默認就是允許所有訪問
        initParams.put("deny","192.168.15.21");
 
        bean.setInitParameters(initParams);
        return bean;
    }
 
 
    //2、配置一個web監控的filter
    @Bean
    public FilterRegistrationBean webStatFilter(){
        FilterRegistrationBean bean = new FilterRegistrationBean();
        bean.setFilter(new WebStatFilter());
 
        Map<String,String> initParams = new HashMap<>();
        initParams.put("exclusions","*.js,*.css,/druid/*");
 
        bean.setInitParameters(initParams);
 
        bean.setUrlPatterns(Arrays.asList("/*"));
 
        return  bean;
    }
}

controller類

package com.atguigu.springboot.controller;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
 
import java.util.List;
import java.util.Map;
 
@Controller
public class HelloController {
 
    @Autowired
    JdbcTemplate jdbcTemplate;
 
 
    @ResponseBody
    @GetMapping("/query")
    public Map<String,Object> map(){
        List<Map<String, Object>> list = jdbcTemplate.queryForList("select * FROM department");
        return list.get(0);
    }
}