【mysql】【springboot】启动报错Could not create connection to database server. Attempted reconnect 3 times. Giving up

原因是少了时区，加&serverTimezone=UTC

jdbc:mysql://127.0.0.1:3306/my_test?useUnicode=true&characterEncoding=utf-8&autoReconnect=true&useSSL=false&serverTimezone=UTC

参考文章：https://www.cnblogs.com/flyingDragon/p/11268920.html

原文地址：https://www.cnblogs.com/xiaostudy/p/12329426.html

时间： 2024-10-10 00:36:42

【mysql】【springboot】启动报错Could not create connection to database server. Attempted reconnect 3 times. Giving up的相关文章

通过dbcp链接池对数据库操作报 Cannot create PoolableConnectionFactory (Could not create connection to database server. Attempted reconnect 3 times. Giving up.)--解决方案

org.springframework.transaction.CannotCreateTransactionException: Could not open JDBC Connection for transaction; nested exception is java.sql.SQLException: Cannot create PoolableConnectionFactory (Could not create connection to database server. Atte

java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up.

java.sql.SQLNonTransientConnectionException: Could not create connection to database server. Attempted reconnect 3 times. Giving up. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:108) ~[mysql-connector-java-8.0.11.jar:8.0.

jeecg启动报错“com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.”的解决办法

在运行"maven build"-->"tomcat:run"之后,报如下错误: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server. at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

java项目连接jdbc报错：com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server

原因:相关jar包版本太低解决方法:下载最新版的mysql-connector-java即可原文地址:https://www.cnblogs.com/zhengna/p/9098694.html

springboot启动报错start bean 'eurekaAutoServiceRegistration' NullPointerException

解决方案参考:https://blog.csdn.net/hhj13978064496/article/details/82825365 我将eureka的依赖包放到了依赖包的最下面,启动报错, 如下: <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId&

springboot启动报错:"Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled."

报错内容 java.lang.Object.wait(Native Method)java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:143)com.mysql.jdbc.AbandonedConnectionCleanupThread.run(AbandonedConnectionCleanupThread.java:41)2019-02-14 14:58:00.326 INFO 17688 --- [ main] Condition