Java JDBC建立和Mysql、sql server 2005、sqlite和Oracle数据库的连接

1.与MySQL数据库的连接

import java.sql.*;
import java.util.*;

public class GetConn {
        Connection conn = null;
        public Connection getConnection() {
            try {
                Class.forName("com.mysql.jdbc.Driver");                                         // 加载MySQL数据库驱动
                System.out.println("数据库驱动加载成功！！");
                String url = "jdbc:mysql://localhost:3306/db_database03";                 // 定义与连接数据库的url
                String user = "root";                                                                 // 定义连接数据库的用户名
                String passWord = "111";                                                         // 定义连接数据库的密码
                conn = DriverManager.getConnection(url, user, passWord);         // 连接连接
                System.out.println("已成功的与MySQL数据库建立连接！！");
            } catch (Exception e) {
                e.printStackTrace();
            }
            return conn;
        }
        public List getBccd(){
                List list = new ArrayList<Bccd>();
                conn = getConnection();
                try {
                        Statement statement = conn.createStatement();
                        String sql = "select * from tb_bccd";
                        ResultSet rest = statement.executeQuery(sql);
                        while(rest.next()){
                                Bccd bccd = new Bccd();
                                bccd.setId(rest.getInt(1));
                                bccd.setbName(rest.getString(2));
                                bccd.setPrice(rest.getFloat(3));
                                list.add(bccd);
                        }
                } catch (SQLException e) {

                        e.printStackTrace();
                }

                return list;
        }

}

mysql 数据库jar包：http://download.csdn.net/detail/liaoqianwen123/6783545

2. 与SQl server 2005的连接

import java.sql.*;
public class GetConn {
 private Connection conn ;     //定义Connection对象
public Connection getConnection(){    //定义连接数据库方法
    try {
        Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); //加载数据库驱动
        System.out.println("数据库驱动加载成功！");
   //定义连接数据库URL
        String url = "jdbc:sqlserver://localhost:1433;DatabaseName=master"; 
        String userName = "sa";
        String passWord = "";
        conn = DriverManager.getConnection(url,userName ,passWord);  //获取数据库连接
        if(conn != null){
            System.out.println("已成功的与SQLServer2005数据库建立连接！");
        }
    } catch (Exception e) {          
        e.printStackTrace();
    }
    return conn;
}
 public static void main(String[] args) {
  GetConn getConn = new GetConn();
  getConn.getConnection();
 }
}

SQl server 2005 jar包：http://download.csdn.net/detail/liaoqianwen123/6783539

3.与Oracle 11g的连接

import java.sql.*;
public class GetConn {
public Connection getConnection() {
    Connection conn = null;
    try {
        Class.forName("oracle.jdbc.driver.OracleDriver");                 //加载数据库驱动
        System.out.println("数据库驱动加载成功！");                                        //输出的信息
        String url = "jdbc:oracle:thin:@localhost:1521:orcl3";        //获取连接URL
        String user = "system";                                                     //连接用户名
        String password = "aaa";                                                    //连接密码
        Connection con = DriverManager.getConnection(url, user, password); //获取数据库连接
        if (con != null) {
            System.out.println("成功的与Oracle数据库建立连接！！");
        }
    } catch (Exception e) {
        e.printStackTrace();
    }        
    return conn;                                                                                                //返回Connection实例 
}
        public static void main(String[] args) {
                GetConn getConn = new GetConn();
                getConn.getConnection();
        }
}

Oracle的jar包： http://download.csdn.net/detail/liaoqianwen123/6783531

4.与sqlite的连接

import java.sql.*;

public class SQLiteJDBC
{
  public static void main( String args[] )
  {
    Connection c = null;
    try {
      Class.forName("org.sqlite.JDBC");
      c = DriverManager.getConnection("jdbc:sqlite:test.db");
    } catch ( Exception e ) {
      System.err.println( e.getClass().getName() + ": " + e.getMessage() );
      System.exit(0);
    }
    System.out.println("Opened database successfully");
  }
}

sqlite的jar包：http://download.csdn.net/detail/liaoqianwen123/6783549