mysql8.0连接错误

pom.xml配置mysql-connector-java版本问题

异常：

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

at com.mysql.jdbc.Util.handleNewInstance(Util.java:409)

at com.mysql.jdbc.Util.getInstance(Util.java:384)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1013)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:973)

at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:918)

at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2588)

at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2321)

at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:832)

...

修改pom.xml配置：

  mysql

  mysql-connector-java

  8.0.13

  runtime

异常：

Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.

修改Driver路径：

jdbc.driver=com.mysql.cj.jdbc.Driver

异常：

java.sql.SQLException: The server time zone value '???ú±ê×??±??' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support.

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)

at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73)

at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:76)

at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:835)

at com.mysql.cj.jdbc.ConnectionImpl.(ConnectionImpl.java:455)

at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:240)

at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:207)

at com.alibaba.druid.filter.FilterChainImpl.connection_connect(FilterChainImpl.java:148)

at com.alibaba.druid.filter.stat.StatFilter.connection_connect(StatFilter.java:211)

...

修改url连接时区：

jdbc.url=jdbc:mysql://localhost:3306/db?characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true