springboot後臺開發連接hive數據庫
確保集羣上hivesever2的服務已啓動
hive數據庫一般在10000端口
springboot開發
- pox.xml 文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.education</groupId>
<artifactId>edu_server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>edu_server</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>2.1.2.RELEASE</version>
<exclusions>
<exclusion>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-slf4j-impl</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
<version>2.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-hadoop</artifactId>
<version>2.5.0.RELEASE</version>
<exclusions>
<exclusion>
<groupId>jdk.tools</groupId>
<artifactId>jdk.tools</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.hive</groupId>
<artifactId>hive-jdbc</artifactId>
<version>1.1.0</version>
<exclusions>
<exclusion>
<groupId>org.eclipse.jetty.aggregate</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>jdk.tools</groupId>
<artifactId>jdk.tools</artifactId>
</exclusion>
<exclusion>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.hive</groupId>
<artifactId>hive-shims</artifactId>
</exclusion>
<exclusion>
<artifactId>jasper-compiler</artifactId>
<groupId>tomcat</groupId>
</exclusion>
<exclusion>
<artifactId>jasper-runtime</artifactId>
<groupId>tomcat</groupId>
</exclusion>
<exclusion>
<artifactId>servlet-api</artifactId>
<groupId>javax.servlet</groupId>
</exclusion>
<exclusion>
<artifactId>log4j-slf4j-impl</artifactId>
<groupId>org.apache.logging.log4j</groupId>
</exclusion>
<exclusion>
<artifactId>slf4j-log4j12</artifactId>
<groupId>org.slf4j</groupId>
</exclusion>
<exclusion>
<groupId>tomcat</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
</exclusion>
<exclusion>
<groupId>org.eclipse.jetty.orbit</groupId>
<artifactId>*</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.mortbay.jetty</groupId>
<artifactId>*</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-jdbc</artifactId>
<version>9.0.11</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
<scope>runtime</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
- application.yml文件
server:
port: 18891
hive:
url: jdbc:hive2://10.100.XX.XXX:10000/default #hive默認數據庫
driver-class-name: org.apache.hive.jdbc.HiveDriver
type: com.alibaba.druid.pool.DruidDataSource
user: a
password: b
initialSize: 1
minIdle: 3
maxActive: 20
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 30000
validationQuery: select 1
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
maxPoolPreparedStatementPerConnectionSize: 20
- hive配置
package com.education.edu_server.config;
import org.apache.tomcat.jdbc.pool.DataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcTemplate;
@Configuration
public class HiveConfig {
@Value("${hive.url}")
private String url;
@Value("${hive.driver-class-name}")
private String driver;
@Value("${hive.user}")
private String user;
@Value("${hive.password}")
private String password;
@Bean
public DataSource dataSource(){
DataSource dataSource = new DataSource();
dataSource.setUrl(url);
dataSource.setDriverClassName(driver);
dataSource.setUsername(user);
dataSource.setPassword(password);
return dataSource;
}
@Bean
public JdbcTemplate jdbcTemplate(DataSource dataSource){
return new JdbcTemplate(dataSource);
}
}
- controller
package com.education.edu_server.controller;
import com.alibaba.fastjson.JSON;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
import java.util.Map;
@RestController
@RequestMapping("/index")
public class IndexController {
@Autowired
@Qualifier("jdbcTemplate")
private JdbcTemplate jdbcTemplate;
@GetMapping("/list")
public String list() {
String sql = "select app,pref from game_pref order by pref desc";
List<Map<String, Object>> list = jdbcTemplate.queryForList(sql);
return JSON.toJSONString(list);
}
}
注意事項（坑）
- Error: Could not open client transport with JDBC Uri:
hive地址不對，詢問管理hive集羣的人解決 - Required field ‘client_protocol’ is unset!
jdbc-hive依賴的版本（2.3.3）與hive的版本（1.1.0）不匹配，將jdbc-hive依賴版本改爲1.1.0
