一、连接mysql数据库:
步骤一:在eclipse下面建一个项目,我的是JDBC_Test,
步骤二:选中项目名称,右键选择Build Path->Configure Build Path….
步骤三:进入Java Build Path 选择Libraies,如下图所示

步骤四:选择Add External JARs.. 如下图

步骤五:找到已经下载好的MySQL驱动器存放的位置

步骤六:选择对应的.jar文件,点击打开

步骤七:选择应用并关闭,如下图


到此,mysql驱动已经加载进去,下面进行连接测试
步骤一:在刚刚项目内创建一个com.zx.jdbc包,及一个demo01类
步骤二:测试代码
package com.zx.jdbc; import java.sql.Connection; import java.sql.DriverManager;
import java.sql.SQLException; /** * 测试连接 * @author 温暖wk * */ public class Demo01
{ public static void main(String[] args) { //加载驱动类 try { Class.forName(
"com.mysql.jdbc.Driver"); //Class.forName("com.mysql.cj.jdbc.Driver");
Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test",
"root","521123456"); } catch (ClassNotFoundException e) { // TODO
Auto-generated catch block e.printStackTrace(); } catch (SQLException e) { //
TODO Auto-generated catch block e.printStackTrace(); } } }
运行之后,提示“

Loading class com.mysql.jdbc.Driver'. This is deprecated. The new
driver class iscom.mysql.cj.jdb”

这是因为用了最新的mysql 连接驱动
官方提示支持将com.mysql.jdbc.Driver 改为 com.mysql.cj.jdbc.Driver

运行之后,仍然报错,不能运行,提示

Caused by:
com.mysql.cj.exceptions.InvalidConnectionAttributeException: The
server time zone value ‘Öйú±ê׼ʱ¼ä’ 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
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown
Source) at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown
Source) at java.lang.reflect.Constructor.newInstance(Unknown Source)

`

修改如下:
Connection conn=DriverManager.getConnection(
"jdbc:mysql://10.66.113.124:3306/work?useUnicode=true&characterEncoding=utf8&serverTimezone=GMT"
,"root","521123456");
到此,提示如下:”

com.mysql.cj.jdbc.ConnectionImpl@769c9116

“表示测试成功。

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