Обсуждение: PostgreSQL and WWW

Greetings,

great thanks to Oleg Broytmann for his  useful advice,  I've
understood the proper  fromat for input data at last and the
problem with copying DB from file was successfully solved.

Well,  I hope  you will  not be  angry with  me for one more
(and I want belive the last) lame question: how do I make my
DB accessible from the Web (via JDBC)?  With what parameters
should I call 'Class.forName()' and
'DriverManager.getConnection()' in case of PostgreSQL?

I must notice that I'm going to write a servlet,  but not an
applet.

P.S.: you can write me in russian - it's my native lang. :)
P.P.S.: database name is 'rscexamdb', table name is 'exam',
 may be it should be useful for examples.

--
  BEST WISHES, Mitlas
  Webmaster, Auric Vision Ltd.
  http://www.auricvision.com/

Dmitry Iv Popov <mitlas@auricvision.com> wrote:

 > how do I make my DB accessible from the Web (via JDBC)?  With what
 > parameters should I call 'Class.forName()' and
 > 'DriverManager.getConnection()' in case of PostgreSQL?

The following is quoted from

  ".../pgsql/src/interfaces/jdbc/example/basic.java":

    // Load the driver
    Class.forName("postgresql.Driver");

    // Connect to database
    System.out.println("Connecting to Database URL = " + url);
    db = DriverManager.getConnection(url, usr, pwd);

`url' could be "localhost:postgresql:rscexamdb", e.g. If your program
can't find the driver class, you maybe have forgotten to put it into
the CLASSPATH:

   declare -x CLASSPATH=$CLASSPATH:./:/usr/local/lib/java/postgresql.jar

(or equivalents, depends on your shell; valid only, if file
"postgresql.jar" is in "/usr/local/lib/java", of course).

In the jdbc driver directory (".../src/interfaces/jdbc", see above)
you'll find a README telling you something about building, installing
and using the driver.

Hope it helps,
Ulf

P.S.:

 > P.S.: you can write me in russian - it's my native lang. :)

unfortunately not mine ;-)

--
======================================================================
 %%%%%            Ulf Mehlig              <umehlig@zmt.uni-bremen.de>
   %%%%!%%%       Projekt "MADAM"         <umehlig@uni-bremen.de>
%%%% %!% %%%%     ----------------------------------------------------
 ---| %%%         MADAM:  MAngrove    |  Center for Tropical Marine
    ||--%!%              Dynamics     |  Biology
    ||                  And           |  Fahrenheitstrasse 1
 _ /||\_/\_            Management     |
/  /    \  \ ~~~~~~~~~~~~~~~~~        |  28359 Bremen/Germany
  ~~~~~~~~~~~~~~~~~~~~

On Sat, 28 Nov 1998, Dmitry Iv Popov wrote:

> Greetings,
>
> great thanks to Oleg Broytmann for his  useful advice,  I've
> understood the proper  fromat for input data at last and the
> problem with copying DB from file was successfully solved.
>
> Well,  I hope  you will  not be  angry with  me for one more
> (and I want belive the last) lame question: how do I make my
> DB accessible from the Web (via JDBC)?  With what parameters
> should I call 'Class.forName()' and
> 'DriverManager.getConnection()' in case of PostgreSQL?

Connection con =
DriverManager.getConnection("jdbc:postgresql:rscexamdb","username","password");

> I must notice that I'm going to write a servlet,  but not an
> applet.

It works best with servlet's and applications, but (personally) it's not
that good for applets.

For applets, it would be better to have your own protocol to a servlet,
then jdbc to the database.

--
       Peter T Mount peter@retep.org.uk
      Main Homepage: http://www.retep.org.uk
PostgreSQL JDBC Faq: http://www.retep.org.uk/postgres
 Java PDF Generator: http://www.retep.org.uk/pdf