java通过jdbc连接mysql数据库

下载mysql驱动包：

http://dev.mysql.com/downloads/file.php?id=456317

解压之后里面有个mysql-connector-java-5.1.35-bin.jar

然后直接来代码了：

 package com.wisesoft.db;

 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 public class MySqlDBTest {
   public static void main(String[] args){
       String driver="com.mysql.jdbc.Driver";
       String url="jdbc:mysql://192.168.100.240:3306/mysql";
       String user="root";
       String password="wisesoft";
       Connection conn = null;
       Statement stmt  =null;
       ResultSet rs  =null;
       try{
         //加载数据库驱动
         Class.forName(driver);
         //建立数据库连接
         conn = DriverManager.getConnection(url, user, password);
         //创建数据库语句连接对象
         stmt = conn.createStatement();
         //执行的sql语句
         String sql="select host,user from user";
         //获取查询结果集
         rs  = stmt.executeQuery(sql);
         //读取结果集数据
         while(rs.next()){
             System.out.println("host:"+rs.getString("host")+"    user:"+rs.getString("user"));
         }
       }catch(Exception e){
           e.printStackTrace();
       }finally{
             try {
                   if(rs!=null)rs.close();
                   if(stmt!=null)stmt.close();
                   if(conn!=null)conn.close();
             } catch (SQLException e) {
                 e.printStackTrace();
             }
       }
   }
 }