Here is the code. I hope that it will be understandable for you.
<HTML>
<HEAD>
<TITLE>Bonus Calculation</TITLE>
</HEAD>
<%-- Comment
Scriptlet for import statements
<%@ indicates a jsp directive --%>
<%@ page import="javax.naming.*" %>
<%@ page import="javax.rmi.PortableRemoteObject" %>
<%@ page import="Beans.*" %>
<%-- Comment
Scriptlet to get the parameters,
convert string to Integer to int for bonus
calculation, and declare/initialize bonus
variable. <% indicates a jsp scriptlet --%>
<%! String strMult, socsec; %>
<%! Integer integerMult; %>
<%! int multiplier; %>
<%! double bonus; %>
<%
strMult = request.getParameter("MULTIPLIER");
socsec = request.getParameter("SOCSEC");
integerMult = new Integer(strMult);
multiplier = integerMult.intValue();
bonus = 100.00;
%>
<%-- Comment
Scriptlet to look up session Bean --%>
<%
InitialContext ctx = new InitialContext();
Object objref = ctx.lookup("calcs");
CalcHome homecalc = (CalcHome)
PortableRemoteObject.narrow(
objref, CalcHome.class);
%>.MARCH 20, 2000 59
<%-- Comment
Scriptlet to create session Bean,
call calcBonus method, and retrieve a database
record by the social security number
(primary key) --%>
<%
try {
Calc theCalculation = homecalc.create();
Bonus theBonus = theCalculation.calcBonus(
multiplier,
bonus,
socsec);
Bonus record = theCalculation.getRecord(socsec);
%>
<%-- Comment
HTML code to display retrieved data
on returned HTML page. --%>
<H1>Bonus Calculation</H1>
Social security number retrieved:
<%= record.getSocSec() %>
<P>
Bonus Amount retrieved: <%= record.getBonus() %>
<P>
<%-- Comment
Scriptlet to catch DuplicateKeyException --%>
<%
} catch (javax.ejb.DuplicateKeyException e) {
String message = e.getMessage();
%>
<%-- Comment
HTML code to display original data passed to JSP
on returned HTML page --%>
Social security number passed in: <%= socsec %>
<P>
Multiplier passed in: <%= strMult %>
<P>
Error: <%= message %>
<%-- Comment
Scriptlet to close try and catch block --%>
<%
}
%>
<%-- Comment
HTML code to close HTML body and page --%>
</BODY>
</HTML>
Diwakar Killamsetty <[EMAIL PROTECTED]> on 07/13/2000 06:16:50 AM
Please respond to A mailing list about Java Server Pages specification and
reference <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
cc: (bcc: Abubakar Zaki/Internal/Softworks)
Subject: How to call EJBean from JSP?
Hi,
I am novice to these technologies.
I have an EJBean on one machine and JSPs on other, now if I want to use the
services of EJBean, I need to make a JNDI call. Can any one please let me
know the procedure? And also how to write a deployment discriptor. Are they
any tutorials on web to explain all these things?
Please help me.
Thanks in advance.
regards,
Diwakar
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