[JAVA][DB][连接]Java连接各种数据库的实例

Java连接各种数据库的实例
1.Oracle8/8i/9i数据库（thin模式）


import java.net.URL;


import java.sql.*;






public class JavaOracle ...{




public JavaOracle() ...{


}




public static void main(String[] args)...{




try ...{


// OracleDriver exist check




try ...{


Class.forName("oracle.jdbc.driver.OracleDriver");


}




catch(java.lang.ClassNotFoundException e) ...{


System.err.print(e.getMessage());


}




// Get Connection


String url="jdbc:oracle:thin:@Server:1521:SDCDB";


Connection conn=DriverManager.getConnection(url,"test","test");




// Execute sql


Statement stmt=conn.createStatement();


ResultSet rs=stmt.executeQuery("select score from MY");






while(rs.next()) ...{


System.out.println(rs.getString(1));


}


conn.close();


}


catch(SQLException ex)


while(ex!=null)




...{


System.out.println(ex.getSQLState());


}


}


}


}

2、DB2数据库


Class.forName("com.ibm.db2.jdbc.app.DB2Driver ").newInstance();




String url="jdbc:db2://localhost:5000/sample";




//sample为你的数据库名


String user="admin";




String password="";




Connection conn= DriverManager.getConnection(url,user,password);

3、Sql Server7.0/2000数据库


Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();




String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=mydb";




//mydb为数据库


String user="sa";




String password="";




Connection conn= DriverManager.getConnection(url,user,password);

4、Sybase数据库


Class.forName("com.sybase.jdbc.SybDriver").newInstance();




String url =" jdbc:sybase:Tds:localhost:5007/myDB";




//myDB为你的数据库名


Properties sysProps = System.getProperties();




SysProps.put("user","userid");




SysProps.put("password","user_password");




Connection conn= DriverManager.getConnection(url, SysProps);

5、Informix数据库


Class.forName("com.informix.jdbc.IfxDriver").newInstance();




String url = "jdbc:informix-sqli://123.45.67.89:1533/myDB:INFORMIXSERVER=myserver; user=testuser;password=testpassword";




//myDB为数据库名


Connection conn= DriverManager.getConnection(url);

6、MySQL数据库


Class.forName("org.gjt.mm.mysql.Driver").newInstance();




String url ="jdbc:mysql://localhost/myDB?




user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1"




//myDB为数据库名


Connection conn= DriverManager.getConnection(url);

7、PostgreSQL数据库


Class.forName("org.postgresql.Driver").newInstance();




String url ="jdbc:postgresql://localhost/myDB"




//myDB为数据库名


String user="myuser";




String password="mypassword";




Connection conn= DriverManager.getConnection(url,user,password);