david eberhardt

Originally posted by Bear Bibeault:
You didn't show how you are accessing the Card1 property from the JSP. From the error message, I'm assuming you are trying to set it from an int.

Bear;
You steered me into the right direction - the problem was the getCard() methods; orignally I had:
public int getCard1 () { return card1; } public void setCard1 (String card1){ this.card1=Integer.parseInt(card1); }
When I set the card1, I brought in the value as a String, when I attempted to get card1, I used an int return type.
So i changed the two methods to be consistent with each other:
public int getCard1 () { return card1; } public void setCard1 (int card1) { this.card1=card1; }
For some reason, unknown to me at this time, the getter and setter methods for a particular property (int card1) need to match up in regards to the arg type supplied to the setter and the return type of the getter. This is somewhat of a guess on my part.
thanks for the help.
[ April 02, 2003: Message edited by: david eberhardt ]

maybe the problem is related to the following:
I send info to the bean from my jsp like this:
<%@ page import="CardTotal" %> <jsp:useBean id="orderedCard" class="CardTotal"> </jsp:useBean> <jsp:setProperty name="orderedCard" property="card1" param="card1" /> <jsp:setProperty name="orderedCard" property="card2" param="card2" /> <jsp:setProperty name="orderedCard" property="card3" param="card3" /> <jsp:setProperty name="orderedCard" property="card4" param="card4" /> <jsp:setProperty name="orderedCard" property="card5" param="card5" /> <jsp:setProperty name="orderedCard" property="card6" param="card6" /> <jsp:setProperty name="orderedCard" property="card7" param="card7" />
in my bean, I set up variables to hold the values sent via "card1" parameter, "card2" parameter, etc like this:
public class CardTotal { private int card1; private int card2; private int card3; private int card4; private int card5; private int card6; private int card7; private int totalCard = 0; // no arg constructor public CardTotal() { } public int getTotalCard () { setTotalCard(); return totalCard; } public void setTotalCard () { // totalCard=card1+card2+card3+card4+card5+card6+card7; } public int getCard1 () { return card1; // return Integer.toString(card1); } //takes a string an makes it an int public void setCard1 (String card1) { this.card1=Integer.parseInt(card1); }
here is the method that is giving me an error msg:
[B]public int getCard1 () { return card1; // return Integer.toString(card1); }[/B]
I don't call upon this method from my JSP, but I think it is causing an error because it may be trying to return the parameter called called "card1" which came in as a String from the JSP ???
[ April 02, 2003: Message edited by: david eberhardt ]

Originally posted by Bear Bibeault:
[QB]You didn't show how you are accessing the Card1 property from the JSP. From the error message, I'm assuming you are trying to set it from an int.

Bear,
my JSp page takes parameters from checkboxes in a form from a previous html page as follows:
<%@ page import="CardTotal" %> <jsp:useBean id="orderedCard" class="CardTotal"> </jsp:useBean> <jsp:setProperty name="orderedCard" property="card1" param="card1" /> <jsp:setProperty name="orderedCard" property="card2" param="card2" /> <jsp:setProperty name="orderedCard" property="card3" param="card3" /> <jsp:setProperty name="orderedCard" property="card4" param="card4" /> <jsp:setProperty name="orderedCard" property="card5" param="card5" /> <jsp:setProperty name="orderedCard" property="card6" param="card6" /> <jsp:setProperty name="orderedCard" property="card7" param="card7" />
here is the line where I get the totalCard value back to the JSP page:
<!-- two ways to get the totalCard property --> You picked the number: <b><%= orderedCard.getTotalCard() %></b> <br><br> You picked the number: <b><jsp:getProperty name="orderedCard" property="totalCard" />
and here is more of the "bean" I'm using:
import java.util.*; public class CardTotal { private int card1; private int card2; private int card3; private int card4; private int card5; private int card6; private int card7; private int totalCard = 0; // no arg constructor public CardTotal() { } public int getTotalCard () { return totalCard=card1+card2+card3+card4+card5+card6+card7; } public void setTotalCard () { // totalCard=card1+card2+card3+card4+card5+card6+card7; } public String getCard1 () { return Integer.toString(card1); } public void setCard1 (String card1) { this.card1=Integer.parseInt(card1); } etc, etc, }
[b]I never really use the getCard1() method, but if you look at my getCard1() method, you can see that I have changed it from the original.
This works now every time I reboot the computer.
The odd thing to me was that I could get it to work if I changed the case of the getCard1() to getcard1() and recompiled without rebooting BUT if I rebooted, then it would give me the error msg.
NOTED: Your criticism of my setTotalCard() method is noted and I will change those methods !!!
[ April 02, 2003: Message edited by: david eberhardt ]

I have a web page that is asking the user to select from a choice of check boxes and sned it to a jsp (http://localhost:8080/card_trick_results.jsp) for processing.
the jsp page calls on a javabean (CardTotal.class) to process the logic:
here is some of the code from the top of the CardTotal.java file -
import java.util.*; public class CardTotal { private int card1; private int card2; private int card3; private int card4; private int card5; private int card6; private int card7; private int totalCard = 0; // no arg constructor public CardTotal() { } public int getTotalCard () { return totalCard=card1+card2+card3+card4+card5+card6+card7; } public void setTotalCard () { // totalCard=card1+card2+card3+card4+card5+card6+card7; } public int getCard1 () { return card1; } public void setCard1 (String card1) { this.card1=Integer.parseInt(card1); }
the problem:
When I execute the jps page, the server responds with an error:

org.apache.jasper.JasperException:
Can't find a method to write property 'card1' of
type 'int' in a bean of type 'CardTotal'

now, if I rewrite

public int getCard1 () {
return card1;
}

to note: changing the case of method name)

public int getcard1 () {
return card1;
}

and recompile this class, then the jsp page is able to process and return the correct page result.
If I shut down and reboot the computer and restart tomcat, I get the same sequence of problems again!
anybody know what is happening?

I have a web page that is asking the user to select from a choice of check boxes and sned it to a jsp (http://localhost:8080/card_trick_results.jsp) for processing.
the jsp page calls on a javabean (CardTotal.class) to process the logic:
here is some of the code from the top of the CardTotal.java file -
import java.util.*; public class CardTotal { private int card1; private int card2; private int card3; private int card4; private int card5; private int card6; private int card7; private int totalCard = 0; // no arg constructor public CardTotal() { } public int getTotalCard () { return totalCard=card1+card2+card3+card4+card5+card6+card7; } public void setTotalCard () { // totalCard=card1+card2+card3+card4+card5+card6+card7; } public int getCard1 () { return card1; } public void setCard1 (String card1) { this.card1=Integer.parseInt(card1); }
the problem:
When I execute the jps page, the server responds with an error:

org.apache.jasper.JasperException:
Can't find a method to write property 'card1' of
type 'int' in a bean of type 'CardTotal'

now, if I rewrite

public int getCard1 () {
return card1;
}

to

public int getcard1 () {
return card1;
}

and recompile this class, then the jsp page is able to process and return the correct page result.
If I shut down and reboot the computer and restart tomcat, I get the same sequence of problems again!
[b] anybody know what is happening?

Mike,
Thanks .... studied it over here https://coderanch.com/t/82236/Tomcat/requested-resource-not-availabe

Mike Curwen,
Thanks Mike.
OK - I read up some more on this whole thing at Configuring & Using Apache Tomcat 4
I specifically looked at Configure Tomcat - part "3. Enable the Invoker Servlet"
it starts by explaining:

The invoker servlet lets you run servlets without first making changes to the WEB-INF/web.xml file in your Web application.

then they mention that it has been turned off due to security flaw.
So now I understand you post a little more also - that without the default invoker servlet, you have to define things in each web.xml file per Web application (i.e. \examples)
THANKS.
[ March 23, 2003: Message edited by: david eberhardt ]

You may want to review this article:
Demystifying Tomcat 4's server.xml File
see page 2 - maybe the following settings make a difference?;

The <Context> Element
reloadable: If set to true, causes Tomcat to check for class changes in the WEB-INF/classes/ and WEB-INF/lib directories. If these classes have changed, the application owning these classes will automatically be reloaded. This feature should only be used during development. This setting will cause severe performance degradation, and therefore should be set to false when in a production environment.

The HTTP Connector
bufferSize: Specifies the size, in bytes, of the buffer to be provided for use by input streams created by this connector. Increasing the buffer size can improve performance, at the expense of higher memory usage. The default value is 2048 bytes.

The article seems to suggest some changes are in order going from (development - localhost) to (production - your web host server) ???
let me know.

Hi Jason
I'm looking at http://www.subsgalore.com:8080/subsgalore/OrderInit.do page in IE 6.0 ...
it appears the same everytime I refresh (and I've deleted temp internet files between refreshes).
so it appears I cannot duplicate your indications ...
question: can you tell us which code you are editing out? is it simple html you're deleting or jsp syntax?
[ March 23, 2003: Message edited by: david eberhardt ]

glad it worked John.
I spent a few days on that one myself.
now I'm trying to learn why it worked ....

John,
you might want to look at Dirk Schreckmann's comments in this thread --> https://coderanch.com/t/82236/Tomcat/requested-resource-not-availabe

Thanks Dick - I was having the simalar problems until I came accross "Take another look at ?the aforementioned thread
My particular problem was that I could call on the sample servlets and they ran fine but when I tried to put one of my own in the root/web-inf/classes directory, I'd get the server error also.
found the code you mentioned in the web.xml file starting at :
<!-- ================ Built In Servlet Mappings ========================= -->
But I am wondering -
how come calling "http://localhost:8080/examples/servlet/HelloWorld" works before I made that change
while "http://localhost:8080/servlet/HelloWorld" did not
[ March 20, 2003: Message edited by: david eberhardt ]

Originally posted by Berciu Ioan:
Hi, I want to write a jdbc driver for an access database and I could use some help (source code or links maybe a tutorial on how to do it).Don't want to use odbc just jdbc to connect to the database.One more question : is it possible to connect to a database just specifing the path and the name of the database ?
Tanks.

see "Displaying Records from the Database with Java Servlets by Faisal Khan.
http://www.stardeveloper.com:8080/articles/display.html?article=2001062501&page=1

Originally posted by Valentin Crettaz:
Nice shot David

Thanks much!
Just got a call from a recruiter tonight looking for a junior java programmer ....
I'll keep folks posted on this development.
Certification - it helps!

hey, Thank you everybody!
Manish Hatwalne
Ruff Young
Dan Chisholm
Svend Rost
now it's on to landing that next good job!
david eberhardt
Danbury, CT