public class mysql01 {
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public static void main(String[] args) {
//声明一个连接
Connection con;
//用来指向驱动程序名称
String driver = "com.mysql.cj.jdbc.Driver";
//用来连接指定数据库
String url = "jdbc:mysql://localhost:3306/work?serverTimezone=GMT";
//用来配置的用户名
String user = "root";
//用来配置的用户密码
String password = "root";
//遍历查询结果集
try {
//加载驱动程序
Class.forName(driver).newInstance();
//get.connection 用来连接数据库
con =(Connection) DriverManager.getConnection(url,user,password);
if (!con.isClosed()) {
System.out.println("连接成功");
//创建statement类 用来执行sql 语句
Statement st = (Statement) con.createStatement();
//要执行的sql语句
String sql = "select*from worker";
//Resultset用来存放结果集
ResultSet rt = st.executeQuery(sql);
System.out.println("*********执行结果如下*******");
System.out.println("-----------------");
System.out.println("姓名" + "\t" + "地址");
System.out.println("-----------------");
String job = null;
String id = null;
while(rt.next()){
//获取stuname这列数据
job = rt.getString("name");
//获取stuid这列数据
id = rt.getString("id");
//输出结果
System.out.println(id + "\t" + job);
}
rt.close();
con.close();
}
} catch(ClassNotFoundException e) {
//数据库驱动类异常处理
System.out.println("Sorry,can`t find the Driver!");
e.printStackTrace();
}catch(SQLException e) {
//数据库连接失败异常处理
e.printStackTrace();
}catch (Exception e) {
e.printStackTrace();
}finally{
System.out.println("数据库数据成功获取!!");
}
}
}