Java学习---连接数据库操作

Java连接Oracle数据库

 package com.ftl.mysql;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;

 public class HelloFtl {
     public static final String DBDRIVER= "oracle.jdbc.driver.OracleDriver";
     public static final String DBURL= "jdbc:oracle:thin:@localhost:1521:impdb";
     public static final String DBUSER= "test";
     public static final String DBPASS= "Ch_123";

     public static void main(String[] args) throws Exception  {
         System.out.println("--------------------------------------");
             Connection conn = null;
             PreparedStatement pstmt = null;
             ResultSet rs = null;
             String sql = null;
             Class.forName(DBDRIVER);
             conn = DriverManager.getConnection(DBURL, DBUSER, DBPASS) ;
 //            sql = "select * from teachers ";
             sql = "select tname from teachers where tid = ? and score = ?";
             int tid = 1;
             int score = 100;
             String name = null;
             pstmt = conn.prepareStatement(sql);
             pstmt.setInt(1, tid);
             pstmt.setInt(2, score);
             rs = pstmt.executeQuery();
             while(rs.next())
             {
 //                int tid = rs.getInt(1);
 //                String tname = rs.getString(2);
 //                String sex = rs.getString(3);
 //                float score = rs.getFloat(4);
 //                System.out.println("Tid: " +  tid + "\t Tname: " + tname +
 //                            "\t sex: " + sex + "\t score: " + score);
                 name = rs.getString(1);
                 System.out.println(name);
             }

         System.out.println("--------------------------------------");
     }
 };

Java连接Mysql数据库

 package cn.mldn.lxh ;
 import java.sql.Connection ;
 import java.sql.DriverManager ;
 public class DatabaseConnection {
     public static final String DBDRIVER= "com.mysql.jdbc.Driver";
     public static final String DBURL= "jdbc:mysql://localhost:3306/RUNOOB";
     public static final String DBUSER= "test";
     public static final String DBPASSWORD= "Changeme_123";

     private Connection conn ;
     public DatabaseConnection() throws Exception {
         Class.forName(DBDRIVER) ;
         this.conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;
     }
     public Connection getConnection(){
         return this.conn ;
     }
     public void close() throws Exception {
         if(this.conn != null){
             try{
                 this.conn.close() ;
             }catch(Exception e){
                 throw e ;
             }
         }
     }
 }

jar包下载

[更多参考]

http://www.runoob.com/java/java-mysql-connect.html

Java实例---简单的数据库操作

数据库建模工具 PD的使用

Linu下的Mysql学习详解_【all】