com.mysql.jdbc.Driver 和 com.mysql.cj.jdbc.Driver的区别 serverTimezone设定

com.mysql.jdbc.Driver 是 mysql-connector-java 5中的,
com.mysql.cj.jdbc.Driver 是 mysql-connector-java 6中的java

一、JDBC链接Mysql5 com.mysql.jdbc.Driver:

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf8&useSSL=false
username=root
password=

//北京时间东八区
serverTimezone=GMT%2B8 
//或者使用上海时间
serverTimezone=Asia/Shanghai

二、JDBC链接Mysql6 com.mysql.cj.jdbc.Driver, 须要指定时区serverTimezone:

driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC&useUnicode=true&characterEncoding=utf8&useSSL=false
username=root
password=

在设定时区的时候,若是设定serverTimezone=UTC,会比中国时间早8个小时,若是在中国,能够选择Asia/Shanghai或者Asia/Hongkong,例如:

driverClassName=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://localhost:3306/test?serverTimezone=Shanghai&useUnicode=true&characterEncoding=utf8&useSSL=false
username=root
password=

备注:mysql

I、若是mysql-connector-java用的6.0以上的,以下:sql

<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>6.0.6</version>
</dependency>

可是你的driver用的仍是com.mysql.jdbc.Driver,就会报错:安全

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.

此时须要把com.mysql.jdbc.Driver 改成com.mysql.cj.jdbc.Driver服务器

II、还有一个警告:app

WARN: Establishing SSL connection without server’s identity verification is not recommended. 
According to MySQL 5.5.45+, 5.6.26+ and 5.7.6+ requirements SSL connection 
must be established by default if explicit option isn’t set. 
For compliance with existing applications not using SSL the verifyServerCertificate property is set to ‘false’. 
You need either to explicitly disable SSL by setting useSSL=false, 
or set useSSL=true and provide truststore for server certificate verification.
不推荐不使用服务器身份验证来创建SSL链接。
若是未明确设置,MySQL 5.5.45+, 5.6.26+ and 5.7.6+版本默认要求创建SSL链接。
为了符合当前不使用SSL链接的应用程序,verifyServerCertificate属性设置为’false’。
若是你不须要使用SSL链接,你须要经过设置useSSL=false来显式禁用SSL链接。
若是你须要用SSL链接,就要为服务器证书验证提供信任库,并设置useSSL=true。

SSL – Secure Sockets Layer(安全套接层)ide

参考

原文:http://www.javashuo.com/article/p-kcbcolkg-eu.htmlui

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