1、首先几个必须的依赖
JDBC
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
mysql
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
Druid
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.21</version>
</dependency>
2、yml配置 datasource以及druid
spring:
datasource:
username: root
password: 不愿意透漏密码的同学
url: jdbc:mysql://127.0.0.1:3306/jdbc?serverTimezone=GMT%2B8
driver-class-name: com.mysql.cj.jdbc.Driver
type: com.alibaba.druid.pool.DruidDataSource
initialSize: 8
minIdle: 5
maxActive: 20
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT 1 FROM DUAL
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
filters: stat,wall,logback
maxPoolPreparedStatementPerConnectionSize: 25
useGlobalDataSourceStat: true
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500
无敌不需要Test
直接controller
3、controller 测试
*@RestController 为 responbody+@Controller的合体 *
@GetMapping 为 get 的 requestMapping
@RestController
public class ProviderController {
@Autowired
JdbcTemplate jdbcTemplate;
@GetMapping("/providers")
public Map list() {
List<Map<String, Object>> maps = jdbcTemplate.queryForList("select * from provider");
Map<String, Object> map = maps.get(0);
return map;
}
}
4、End
数据库中数据
返回的数据