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Posted to users@tomcat.apache.org by Benin Technologies <be...@yahoo.fr> on 2013/01/26 00:56:07 UTC
jsp:getProperty not working
Hi,
I'm new to Tomcat/JSP
I have a JSP page that instantiates a bean, then it access the bean
through a scriptlet, it works fine. But when I replace the scriptlet by
a <jsp:getProperty.. tag, it doesn't work
Take my code below :
<%= employee.getFirstName() %> IS WORKING, it displays the employee's
firstname
<jsp:getProperty name="employee" property="firstName" /> IS NOT
WORKING, displays nothing
any idea why ?
<jsp:useBean id="employee" class="org.company.beans.EmployeeBean"
scope="request" />
<html><body>
<%
Vector<EmployeeBean> v =(Vector<EmployeeBean>)request.getAttribute("list");
Iterator i = v.iterator();
int j = 0;
while (i.hasNext()) {
employee = (EmployeeBean)i.next();
%>
<%= employee.getFirstName() %>
WORKS
<jsp:getProperty name="employee" property="firstName" /> DOESN'T
WORK !! WHY ?
<%
}
%>
</body></html>
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Re: jsp:getProperty not working
Posted by Benin Technologies <be...@yahoo.fr>.
thanks for your reply
below my EmployeeBean source code
package org.company.beans;
public class EmployeeBean {
private int id;
private String firstName,
lastName,
email,
department;
public EmployeeBean(int id) {
this.id = id;
firstName = "";
lastName = "";
email = "";
department = "";
}
public EmployeeBean() {
this(0);
}
public int getId() {
return id;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getFirstName() {
return firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getLastName() {
return lastName;
}
public void setEmail(String email) {
this.email = email;
}
public String getEmail() {
return email;
}
public void setDepartment(String department) {
this.department = department;
}
public String getDepartment() {
return department;
}
}
Le 26/01/2013 02:10, Christopher Schultz a écrit :
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> To whom it may concern,
>
> On 1/25/13 6:56 PM, Benin Technologies wrote:
>> I'm new to Tomcat/JSP
>>
>> I have a JSP page that instantiates a bean, then it access the
>> bean through a scriptlet, it works fine. But when I replace the
>> scriptlet by a<jsp:getProperty.. tag, it doesn't work
>>
>> Take my code below :<%= employee.getFirstName() %> IS WORKING, it
>> displays the employee's firstname<jsp:getProperty name="employee"
>> property="firstName" /> IS NOT WORKING, displays nothing
>>
>> any idea why ?
> Can you give us the interface for EmployeeBean? Perhaps "firstName"
> isn't a proper "Java Beans" "property" and so it can't be properly
> detected, while EmployeeBean.getFirstName works just fine.
>
> - -chris
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> Comment: GPGTools - http://gpgtools.org
> Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
>
> iEYEAREIAAYFAlEDLRsACgkQ9CaO5/Lv0PC8awCfTPG1cu31z0RwYeolkR+TbHy6
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> =FOIU
> -----END PGP SIGNATURE-----
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>
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Re: jsp:getProperty not working
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
To whom it may concern,
On 1/25/13 6:56 PM, Benin Technologies wrote:
> I'm new to Tomcat/JSP
>
> I have a JSP page that instantiates a bean, then it access the
> bean through a scriptlet, it works fine. But when I replace the
> scriptlet by a <jsp:getProperty.. tag, it doesn't work
>
> Take my code below : <%= employee.getFirstName() %> IS WORKING, it
> displays the employee's firstname <jsp:getProperty name="employee"
> property="firstName" /> IS NOT WORKING, displays nothing
>
> any idea why ?
Can you give us the interface for EmployeeBean? Perhaps "firstName"
isn't a proper "Java Beans" "property" and so it can't be properly
detected, while EmployeeBean.getFirstName works just fine.
- -chris
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Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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/TQAniNRX2HjsPZhHyZ3EcH+2zjHHeBF
=FOIU
-----END PGP SIGNATURE-----
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Re: jsp:getProperty not working
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
Benin,
On 1/25/13 6:56 PM, Benin Technologies wrote:
> I'm new to Tomcat/JSP
>
> I have a JSP page that instantiates a bean, then it access the
> bean through a scriptlet, it works fine. But when I replace the
> scriptlet by a <jsp:getProperty.. tag, it doesn't work
>
> Take my code below : <%= employee.getFirstName() %> IS WORKING, it
> displays the employee's firstname <jsp:getProperty name="employee"
> property="firstName" /> IS NOT WORKING, displays nothing
>
> any idea why ?
>
>
>
> <jsp:useBean id="employee" class="org.company.beans.EmployeeBean"
> scope="request" /> <html><body> <% Vector<EmployeeBean> v
> =(Vector<EmployeeBean>)request.getAttribute("list"); Iterator i =
> v.iterator(); int j = 0; while (i.hasNext()) { employee =
> (EmployeeBean)i.next(); %>
>
> <%= employee.getFirstName() %>
> WORKS <jsp:getProperty name="employee" property="firstName" />
> DOESN'T WORK !! WHY ?
>
> <% } %> </body></html>
Is that the full JSP? It looks like you may have your bean "employee"
in the request scope, and you haven't set a first name. Your loop may
use a page-scoped bean (or really not a scoped bean at all -- you
appear to be simply using inline scriptlets).
Try using <c:foreach> instead of writing a scriptlet for your loop.
What version of Tomcat are you using?
- -chris
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