Java连接数据库代码摘要

1、Oracle8/8i/9i数据库（thin模式）  
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();  
String url="jdbc:oracle:thin:@localhost:1521:orcl";  
//orcl为数据库的SID  
String user="test";  
String password="test";  
Connection conn= DriverManager.getConnection(url,user,password);  
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);