JDBC连接各种数据库方法

JDBC连接各种数据库方法

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);

// 小例子
Class.forName( " oracle.jdbc.driver.OracleDriver " ).newInstance();
            String url = " jdbc:oracle:thin:@localhost:1521:orcl " ;
            conn =  DriverManager.getConnection(url, " commerce " , " password " );
             // 查询
            rs  =  stm.executeQuery( " select id,name from T1 " );
             while (rs.next()) {
                System.out.println("id:"+rs.getString(1));
                System.out.println("name:"+rs.getString(2));
            }
            
            stm.execute( " inset into T1(id,name) values(1, " dd " ) " );            // 增
            stm.executeUpdate( " delete from T1 where id = 2 " );                // 删
            stm.executeUpdate( " update T1 set name = 'bb' where id = 3 " ); // 改

// PreparedStatement用法
PreparedStatement pstm  =   null ;
pstm.conn.prepareStatement( " insert into T1(id,name) values(?,?) " );
pstm.setInt( 1 , 4 ); // 1表示第一个?号，插入值为4
pstm.setString( 2 , " 小陈 " ); // 2表示第二个?号，插入值为"小陈"
pstm.executeUpdate(); // 真正插入数据库

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&useUnicod
    e = 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);