CIS 365

Vandana Janeja

Nov 27th 2001

Connecting Cobol programs to Other Languages-Visual Basic, Java,HTML

No Main option

Make a DLL instead of an EXE

Java Calling a Cobol programSimplest method:

• Create a COBOL program

• Generate its Executable

• Write a Java program with a runtime exec object which calls the COBOL exe file.

Client Browser

Web Server hosting the Servlet

Server Response Object

Client Request Object

Session Object

A general HTTP scenario

Client Server Architecture and COBOL

Three tiered / N- tiered architecture

ClientHTMLXHTMLAppletApplications

Application Server

Web containerServlets

Application Container

Database

Mail Server

……

Other Services

HTML forms<form name=form1 mehtod=post action=“myCOB.cgi”>

<input type= text name= t1 ><input type=text name=t2><input type=submit></form>

HTML form

Servlet program COBOL CGI program

HTML form

DatabaseDatabase / Mainframe

Web Server

HTML form

Database

Servlet program COBOL CGI program

Client

                                                                      

            Ref : http://www.ils-international.com/goldmine/webcobol.htm