学步园

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);