1、配置文件
datasource:
url: jdbc:mysql://localhost:3306/XXX?readOnlyPropagatesToServer=false&serverTimezone=UTC&useUnicode=true&characterEncoding=utf8&characterSetResults=utf8&&useSSL=false
username: root
password: root
driver-class-name: com.mysql.jdbc.Driver
druid:
type: com.alibaba.druid.pool.DruidDataSource
validation-query: SELECT 1
pool-prepared-statements: true
validation-query-timeout: 5000
query-timeout: 3000
initial-size: 5
min-idle: 5
max-active: 20
max-wait: 10000
test-while-idle: true
test-on-return: true
test-on-borrow: true
# 空閒連接回收的時間間隔,與test-while-idle一起使用,設置5分鐘
time-between-eviction-runs-millis: 300000
# 連接池空閒連接的有效時間 ,設置30分鐘
min-evictable-idle-time-millis: 1800000
2、自定義數據源
@Component
public class DruidProperties {
@ConfigurationProperties(prefix = "spring.datasource")
@Bean
public DataSource druidDataSource() {
return new DruidDataSource();
}
}
3、創建JdbcTemplate連接
@Slf4j
public class MysqlService {
/**
* Spring Boot 默認已經配置好了數據源,可以直接 DI 注入然後使用即可
*/
@Resource
DataSource dataSource;
public List<Map<String, Object>> getSqlReturn(String sql){
//獲取jdbctemplate
JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
List<Map<String, Object>> query = jdbcTemplate.queryForList(sql);
return query;
}
}