gaussdb demo示例

Borny鼎鼎2025-07-31 12:15

1、部署gaussdb服务

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docker pull --platform=linux/arm64 enmotech/opengauss:3.0.0

docker run -d -p 5432:5432 --privileged=true -e GS_PASSWORD=OpenGauss@123 --name gauss enmotech/opengauss:3.0.0

2、创建db、table，插入数据

3、简单示例

（1）依赖

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dependencies {
	compile('org.springframework.boot:spring-boot-starter')
	compile('org.springframework.boot:spring-boot-starter-jdbc')
	compile('org.postgresql:postgresql:42.6.0')
	compileOnly('org.projectlombok:lombok')
}

（2）配置文件信息

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spring.datasource.url=jdbc:postgresql://172.17.42.16:5432/testdb
spring.datasource.username=gaussdb
spring.datasource.password=OpenGauss@123
spring.datasource.driver-class-name=org.postgresql.Driver
spring.datasource.hikari.maximum-pool-size=10
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.idle-timeout=30000
spring.datasource.hikari.connection-timeout=20000

（2）Service服务

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public class UserService {

	@Autowired
	private JdbcTemplate jdbcTemplate;
	
	public List<Map<String, Object>> find() {
		String sql = "SELECT * FROM sv_user limit 0,1";
		log.info("sql:{}", sql);
        return jdbcTemplate.queryForList(sql);
	}
	
	public List<Map<String, Object>> group() {
		String sql = "SELECT name FROM sv_user GROUP BY name";
		log.info("sql:{}", sql);
        return jdbcTemplate.queryForList(sql);
	}
	
}

（3）main方法

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List<Map<String, Object>> find= userService.find();
log.info("find:{}", find);
List<Map<String, Object>> group= userService.group();
log.info("group:{}", group);

（4）运行结果

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2025-07-30 11:04:44 [main] INFO  cn.ac.trimps.UserService - sql:SELECT * FROM sv_user limit 0,1 
2025-07-30 11:04:44 [main] INFO  cn.ac.trimps.Application - find:[{id=1, name=tom, age=3, birth=2022-02-02}] 
2025-07-30 11:04:44 [main] INFO  cn.ac.trimps.UserService - sql:SELECT name FROM sv_user GROUP BY name 
2025-07-30 11:04:44 [main] INFO  cn.ac.trimps.Application - group:[{name=tom}, {name=jerry}]