一.连接oracle数据库
???

 Class.forName(oracle.jdbc.driver.OracleDriver).newInstance();
    String url=jdbcoraclethin@服务器ip1521数据库名称;
    Connection conn=DriverManager.getConnection(url,用户名,密码);

?二.连接mssql数据库

????

Class.forName(com.microsoft.jdbc.sqlserver.SQLServerDriver).newInstance();
     String url=jdbcmicrosoftsqlserverlocalhost1433;DatabaseName=pubs;

?六、jsp连接MySQL数据库 (com.mysql.jdbc.Driver)
??????

 Class.forName(org.gjt.mm.mysql.Driver).newInstance();
      String url =jdbcmysqllocalhostsoftforum
      user=soft&password=soft1234&useUnicode=true&characterEncoding=8859_1
    testDB为你的数据库名
     Connection conn= DriverManager.getConnection(url);        

???

三.连接DB2数据库
????

Class.forName(com.ibm.db2.jdbc.app.DB2Driver ).newInstance();
     String url=jdbcdb2localhost5000数据库名称;

?四、jsp连接Informix数据库

?????

 Class.forName(com.informix.jdbc.IfxDriver).newInstance();
      String url = jdbcinformix-sqli123.45.67.891533testDBINFORMIXSERVER=myserver;
      user=testuser;password=testpassword;
     testDB为你的数据库名
     Connection conn= DriverManager.getConnection(url);
     Statement stmt=conn.createStatement

?五、jsp连接Sybase数据库

???

Class.forName(com.sybase.jdbc.SybDriver).newInstance();
   String url = jdbcsybaseTdslocalhost5007tsdata;
   tsdata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);

?5JDBC_ODBC桥

DRIVER
sun.jdbc.odbc.JdbcOdbcDriver
CONNECT_STRING
jdbcodbcdb

6WEBLOGIC
DRIVER
weblogic.jdbc.pool.Driver
CONNECT_STRING
jdbcweblogicmssqlserver4northwind@localhost

?