Can't Serve 1st JSP page

scripter73 · Mar 15, 2004

Hi,

I installed Tomcat 4.1 and the install directory is C:\Tomcat 4.1. Tomcat comes with examples in the following path: C:\Tomcat 4.1\webapps\examples\jsp, which has \dates\date.jsp.

I can run the following successfully:

http://localhost:8080/examples/jsp/dates/date.jsp.

I have also tested my Tomcat installation successfully by running:

http://localhost:8080/index.jsp.

Now I try to create another folder under C:\Tomcat 4.1\webapps\ called hJSP.

I created an index.jsp under hJSP:

<html>
<head>
<title>H JSP</title>
</head>

<body>
Hello, World!</p>
2 + 2 is ${2 +2} and 4 * 4 is ${4 *4}

</body>
</html>

I can't get index.jsp to run.

Here's my browser path:

http://localhost:8080/hJSP/index.jsp

Here's the error message I receive:

HTTP Status 404 - /hJSP/index.jsp

--------------------------------------------------------------------------------

type Status report

message /hJSP/index.jsp

description The requested resource (/hJSP/index.jsp) is not available.

--------------------------------------------------------------------------------

Apache Tomcat/4.1.29

I've also included the directory paths in System vars.

What am I doing wrong? Why will the JSP serve in one webapps folder and not another?

Thanks for your help.

scripter73

Change Your Thinking, Change Your Life.

scripter73 · Mar 15, 2004

Ok. I restarted my machine and went back to

http://localhost:8080/hJSP/index.jsp

Now, I'm able to get the page to resolve, but here's what I get:

Hello, World!

2 + 2 is ${2+2} and 4 * 4 is ${4 *4}

Its not resolving the actual JSP logic. Any ideas?

Thanks in advance.

Change Your Thinking, Change Your Life.

siberian · Mar 15, 2004

I've always used

<%= 2+2 %>

sedj · Mar 16, 2004

JSP EL (expression language) is only available as part of the JSP 2 spec - which is currently only supported by Tomcat 5.
You'll need to upgrade your Tomcat version if you wish to use JSP EL.

scripter73 · Mar 16, 2004

Great. That clears up that question.

So if I have things written in EL and I want to convert to <%= %> notation, where's the best resource for finding out the syntax.

(I don't think I should upgrade to Tomcat 5 just yet until my company approves the update.)

Thanks,
scripter73

Change Your Thinking, Change Your Life.

sedj · Mar 16, 2004

Just use your intuition ! Its not hard to see that :

2 + 2 is ${2+2} and 4 * 4 is ${4 *4}

is :

2 + 2 is <%= 4 *4 %> and 4 * 4 is <%= 4 *4 %>

scripter73 · Mar 16, 2004

Thanks. Expressions, though, are very easy to figure out.

I was thinking more of an actual condition like the following:<%@ taglib uri="
http://java.sun.com/jstl/core_rt"
prefix="c" %>

......

<c: forEach var="entry" items="${header}">
<tr>
<td>
${entry.key}
</td>
<td>
${entry.value}
</td>

</tr>

</c:forEach>

So are you saying I can just say things like:

<%= entry.key>

For some reason, I don't remember the syntax being that way in JSP.

Thanks in advance.

scripter73

Change Your Thinking, Change Your Life.

sedj · Mar 16, 2004

Ahh, yes well thats a little different !

Say the $header object was some kind of object like a Hashmap, it would be :

Code:

<%
 Iterator i = header.entrySet().iterator();
 while (i.hasNext()) {
   out.println("<td>" +i.next() +"</td>");
 }

%>

Obviously the syntax would change depending on what kind of object your "header" is.

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Can't Serve 1st JSP page

scripter73

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siberian

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sedj

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scripter73

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sedj

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scripter73

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sedj

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