package Dajane; import java.sql.*;
public class dajane { static final String driver="com.mysql.jdbc.Driver"; static final String url="jdbc:mysql://localhost:3306/dajane?useUnicode=true&characterEncoding=utf-8&useSSL=true"； static final String user="root"; static final String password="zf1993"; public static void main(String[] args) throws SQLException, ClassNotFoundException { //注册驱动 Class.forName(driver); //建立连接 Connection conn=DriverManager.getConnection(url,user,password); //建立会话 Statement stmt=conn.createStatement(); String sql="select *from dajane_zf"; //进行SQL查询 ResultSet rs=stmt.executeQuery(sql); while(rs.next()) { int id=rs.getInt("task_id");//任务id String name=rs.getString("task_name");//姓名 String sex=rs.getString("task_sex");//性别 System.out.println(id); System.out.println(name); System.out.println(sex); } //用完记得关闭 try{ if(rs!=null) rs.close(); }catch(SQLException se) { se.printStackTrace(); }finally{ try{ if(stmt!=null) stmt.close(); }catch(SQLException se) { se.printStackTrace(); }finally{ try{ if(conn!=null) conn.close(); }catch(SQLException se) { se.printStackTrace(); } } } } } -------------------------------------------
结果为：
1 dajing female 3 zhangfan male --------------------------------
ps对于高版本，如果不加?useUnicode=true&characterEncoding=utf-8&useSSL=true/false;
会出现：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.
