[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

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 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);