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  • 加载和连接

    package com.sql.zmz;
    
    import java.sql.DriverManager;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Connection;
    import java.sql.Statement;
    
    
    import javax.sql.RowSet;
     
     
    public class Test1{
        	static Statement sql;
            static Connection con;
            static ResultSet res;
            public Connection getConection() {
            	try {
    				Class.forName("com.mysql.jdbc.Driver");
    				System.out.println("数据库驱动加载成功");
    			} catch (ClassNotFoundException e) {
    				e.printStackTrace();
    			}
            	String url = "jdbc:mysql://localhost:3306/test_db?user=root&password=123456&useSSL=true";
            	try {
            		
    				con = DriverManager.getConnection(url);
    				System.out.println("连接数据库成功");
    			} catch (SQLException  e) {
    				// TODO: handle exception
    				e.printStackTrace();
    			}
            	return con;
            }
            
            public static void main(String[] args) {
    			Test1 c = new Test1();
    			con = c.getConection();
    			try {
    				sql = con.createStatement();
    				res = sql.executeQuery("select*from tb_emp1");
    //				res = sql.executeQuery("select*from tb_emp1 where name like '张%' ");
    				while(res.next()) {
    					String id = res.getString("id");
    					String name = res.getString("name");
    					String deptId = res.getString("deptId");
    					String salary = res.getString("salary");
    					System.out.print("编号:"+id);
    					System.out.print("姓名:"+name);
    					System.out.print("工号:"+deptId);
    					System.out.print("薪水"+salary);
    					System.out.println("");
    
    				}
    			} catch (Exception e) {
    				// TODO: handle exception
    				e.printStackTrace();
    			}
    		}
        
     
    }

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  • 原文地址:https://www.cnblogs.com/zhangmingzhao/p/7256589.html
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