serverTimezone=GMT%2B8&characterEncoding=utf-8&useSSL=false 否则运行测试用例报告如下错误： java.sql.SQLException:...: HikariPool-1 - Starting... 2022-04-12 15:23:19.002 INFO 12320 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Start completed....] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed....] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
一个正在使用的连接永远不会被淘汰，只有当它关闭时才会被删除。 在逐个连接的基础上，应用较小的负衰减以避免池中的质量灭绝。 我们强烈建议设置此值，它应该比任何数据库或基础设施强加的连接时间限制短几秒。...获取数据源 public HikariDataSource getDataSource() { HikariDataSource config = new HikariDataSource();...dataSource.getConnection(); PreparedStatement ps = connection.prepareStatement(sql); ps.execute(); // 关闭连接...org.springframework.stereotype.Service; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException...catch (SQLException e) { throw new RuntimeException(e); } finally { // 关闭连接
] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed....] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed....] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed....] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed....] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
default profiles: default 2020-02-18 15:32:40.344 INFO 28560 --- [ main] com.zaxxer.hikari.HikariDataSource...(feature not supported) 2020-02-18 15:32:40.866 INFO 28560 --- [ main] com.zaxxer.hikari.HikariDataSource...(JVM running for 8.576) 2020-02-18 15:32:44.529 INFO 28560 --- [ Thread-2] com.zaxxer.hikari.HikariDataSource...2] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed....2] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
最近在用 SpringBoot 2.7.3 写 demo 的时候发现, 如果请求查询数据库之后, 停止服务时就会报一个警告, 好像说是 HikariPool 资源没有释放 [HikariPool-1 housekeeper...我写的 demo 是最简单的 SpringBoot + mybatis + mysql 经过各种查资料各种研究, 要解决这个问题, 个人觉得应该在内置 Tomcat 优雅停机之后才马上关闭数据源,...org.springframework.context.event.ContextClosedEvent; import org.springframework.stereotype.Component; import com.zaxxer.hikari.HikariDataSource...sdf.format(new Date())); ApplicationContext applicationContext = event.getApplicationContext(); HikariDataSource...hikariDataSource = applicationContext.getBean(HikariDataSource.class); hikariDataSource.close();
生产环境数据库连接数导致的报错问题:Failed to obtain JDBC Connection; nested exception is java.sql.SQLTransientConnectionException: HikariPool...DefaultSqlSession.java:198)... 126 common frames omittedCaused by: java.sql.SQLTransientConnectionException: HikariPool...HikariPool.java:183)at com.zaxxer.hikari.pool.HikariPool.getConnection(HikariPool.java:148)at com.zaxxer.hikari.HikariDataSource.getConnection...(HikariDataSource.java:128)at com.zaxxer.hikari.HikariDataSource$$FastClassBySpringCGLIB$$eeb1ae86.invoke...解决方案：hikari 默认连接数是10，根据业务场景增加最大连接数 datasource: type: com.zaxxer.hikari.HikariDataSource driver-class-name
打印之后，执行一条单元测试，对应的日志信息如下： 2020-04-02 21:43:39.466 INFO 92784 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Starting... 2020-04-02 21:43:39.869 INFO 92784 --- [ main] com.zaxxer.hikari.HikariDataSource...applicationTaskExecutor' 2020-04-02 21:43:39.940 INFO 92784 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Shutdown initiated... 2020-04-02 21:43:39.949 INFO 92784 --- [extShutdownHook...] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2019-02-04 12:10:51.494 WARN 14480 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool : HikariPool...2019-02-04 12:48:17.254 WARN 14480 --- [l-1 housekeeper] com.zaxxer.hikari.pool.HikariPool : HikariPool...artifactId>spring-boot-starter-jdbc 4）yml数据源配置 添加： type: com.zaxxer.hikari.HikariDataSource...spring: #数据源配置 datasource: type: com.zaxxer.hikari.HikariDataSource url: jdbc:mysql://127.0.0.1...由于管家线程中发生了其他事情-特别是关闭空闲连接-出于某种原因，关闭连接可能会阻塞管家线程两个以上的维护周期（60秒）。
SpringBoot启动时报错如下： INFO 15528 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool...ERROR 15528 --- [ main] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during...java.sql.SQLException: Access denied for user 'root'@'localhost' (using password: NO) at com.mysql.jdbc.SQLError.createSQLException
{sql} 返回： 2019-08-12 22:32:23.864 INFO 16800 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Starting... 2019-08-12 22:32:24.056 INFO 16800 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Start completed. 2019-08-12 22:32:24.064 DEBUG 16800 --- [ main] c.b.d.E.getEmploymentMessageData
ds0,ds1 ds0: driver-class-name: com.mysql.cj.jdbc.Driver type: com.zaxxer.hikari.HikariDataSource...pool-name: HikariPool-1 minimum-idle: 1 maximum-pool-size: 5 idle-timeout...Shanghai ds1: driver-class-name: com.mysql.cj.jdbc.Driver type: com.zaxxer.hikari.HikariDataSource...ds0,ds1 ds0: driver-class-name: com.mysql.cj.jdbc.Driver type: com.zaxxer.hikari.HikariDataSource...pool-name: HikariPool-1 minimum-idle: 1 maximum-pool-size: 5 idle-timeout
org.apache.ibatis.session.defaults.DefaultSqlSession@383864d5] result:1 2022-04-20 19:04:27.395 INFO 4384 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Shutdown initiated... 2022-04-20 19:04:27.416 INFO 4384 --- [ionShutdownHook...] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2020-10-02 11:17:41.279 INFO 25817 --- [ main] com.zaxxer.hikari.HikariDataSource :...HikariPool-1 - Starting... 2020-10-02 11:17:41.457 INFO 25817 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Start completed....: HikariPool-1 - Shutdown initiated... 2020-10-02 11:17:41.482 INFO 25817 --- [extShutdownHook...] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
: HikariPool-1 - Starting... 2020-09-28 16:37:25.621 INFO 5344 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Start completed. 2020-09-28 16:37:25.805 INFO 5344 --- [ main] c.p.s.mapper.UserMapperTest...: User(id=1, name=张三, age=23) 可以看到成功的执行了，但是此处还有一个注意点: SpringBoot2.x 中默认使用的是hikari.HikariDataSource...: HikariPool-1 - Starting... 2020-09-28 17:20:28.527 INFO 17148 --- [main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Start completed. 2020-09-28 17:20:28.706 INFO 17148 --- [main] c.p.s.mapper.UserMapperTest
例如： import java.sql.DriverManager; import java.sql.SQLException; public class JDBCDemo { public...以下是创建数据库连接的示例： import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException...; import java.sql.Connection; import java.sql.SQLException; public class JDBCDemo { public static...使用连接池获取连接 一旦配置了连接池，您可以使用 HikariDataSource 对象来获取数据库连接，而无需显式创建连接或关闭连接。连接池会负责管理连接的创建、销毁和重用。...关闭连接 无论是使用 DriverManager 创建的连接还是从连接池获取的连接，都应该在使用后将其关闭，以释放资源并避免资源泄漏。
getConnection() I get this error when I’m trying to getConnection(): java.sql.SQLTransientConnectionException: HikariPool...: hikariDataSource = new HikariDataSource(); hikariDataSource.setDriverClassName(“org.postgresql.Driver...”); hikariDataSource.setUsername(DATABASE_USER_NAME); hikariDataSource.setPassword(DATABASE_PASSWORD)...; hikariDataSource.setJdbcUrl(DATABASE_URL); hikariDataSource.setLeakDetectionThreshold(5000); And then...(60000); hikariDataSource.setValidationTimeout(3000); hikariDataSource.setLoginTimeout(5); hikariDataSource.setMaxLifetime
characterEncoding=utf8&autoReconnect=true&useSSL=false password: xxx type: com.zaxxer.hikari.HikariDataSource...项目测试 可以看到启动了两个数据源，说明配置成功: 2020-11-26 13:54:25.872 INFO 2480 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Starting... 2020-11-26 13:54:33.033 INFO 2480 --- [ main] com.zaxxer.hikari.HikariDataSource...: HikariPool-1 - Start completed. 2020-11-26 13:54:33.046 INFO 2480 --- [ main] com.zaxxer.hikari.HikariDataSource...HikariPool-2 - Starting... 2020-11-26 13:54:34.068 INFO 2480 --- [ main] com.zaxxer.hikari.HikariDataSource
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