win7系统下 JDBC连接数据库

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一>oracle10g数据库其使用的JAR包为数据库下自带的classes12.jar

package cn.oracleJDBC;

import java.sql.*;

public class DBConnection {
public static void main(String[] args) {
  Connection conn = null;
  try {
   Class.forName("oracle.jdbc.driver.OracleDriver");
   String url = "jdbc:oracle:thin:@localhost:1521:orac";//orac为数据库的名
   conn = DriverManager.getConnection(url, "system", "system");
   if (conn != null) {
    System.out.println("连接成功!");
   }else{
    System.out.println("连接不成功!"+conn);
   }
   Statement stmt=conn.createStatement();
   ResultSet rs=stmt.executeQuery("select * from scott.emp");
   while(rs.next()){
    System.out.print(rs.getString(1)+"\t");
   }
  } catch (Exception e) {
   e.getStackTrace();
  }
}
}

二>SQLServer2008数据库其使用的JAR包为sqljdbc4.jar

连接代码如下：

package com.sqlserver2008JDBC;

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

public class DBConnection {
public static Connection getConn() {
  Connection conn = null;
  try {
   Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
   String url = "jdbc:sqlserver://localhost:1433;databaseName=master";//master为数据库的名

   Properties prop=new Properties();
   prop.setProperty("user", "sa");
   prop.setProperty("password", "sa");
   conn=DriverManager.getConnection(url,"sa","sa");
  } catch (Exception e) {
   e.printStackTrace();
  }
  return conn;

}

测试代码如下：

package com.sqlserver2008JDBC;

import java.sql.*;
public class Program {

public static void main(String[] args) {
     Connection conn=DBConnection.getConn();
     if(conn!=null){
    System.out.println("连接成功！");
     }

}
}