JDBC使用步骤

JDBC编程步骤

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• 加载驱动程序：Class.forName(driverClass)

　　加载Mysql驱动：Class.forName("com.mysql.jdbc.Driver")

　　加载Oracle驱动：Class.forName("oracle.jdbc.driver.OracleDriver")

• 获取数据库连接：

　　DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/DatabaseName","userName","password")

• 创建Statement对象：

　　conn.createStatement();

如下面的代码连接数据库：

 package com.gui;

 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.Statement;

 public class DBUtil {

     private static final String URL = "jdbc:mysql://127.0.0.1:3306/imooc";
     private static final String USER = "root";
     private static final String PASSERWORD = "123";

     public static void main(String[] args) throws Exception {

         // 1.加载驱动程序
         Class.forName("com.mysql.jdbc.Driver");

         // 2.获取数据库的连接
         Connection conn = DriverManager.getConnection(URL, USER, PASSERWORD);

         // 3.通过数据库的连接操作数据库，实现增删改
         Statement stmt = conn.createStatement();
         ResultSet rs = stmt
                 .executeQuery("select user_name,age from imooc_goddess");

         while (rs.next()) {
             System.out.println(rs.getString("user_name") + ","
                     + rs.getString("age"));

         }

     }
 }