Re: my first xsp page

Vadim Gritsenko Wed, 24 Sep 2003 05:49:06 -0700

Simon Bretin wrote:

Hi,

I think the problem is that you have your java code within <![CDATA[ sections.

No, CDATA ain't problem (but you still can remove it if not necessary). CDATA is a way to write '<', '&', '>' characters directly in the XML, without encoding them into less readable < & >.

Another thing, is that right before the <field> line, you should add an <xsp:content> tag.

No, that's not necessary (but won't hurt either). XSP will "switch" to content mode automatically once it discovers the tag. You nees this xsp:content tag if you want to output text:

<xsp:logic>
 ... some Java ...
 <xsp:content>this is text</xsp:content>
 ... some more Java ...
</xsp:logic>

Regarding "nullPointException": you tried to access an object by null reference. Get the source XSP file from the working directory, and go to the specified in the exception line number to identify the problematic code.

Vadim

Basically everything within an <xsp:logic> tag should be some Java code, except for the one being present between <xsp:content> tags.

See the correction inlined if I was not clear enough !

Simon.

Wermus Fernando wrote:

I have a client class that it has its own names and values� attributes in a
Properties class. I need to convert this in a xml with the tags
<field><name>blabla</name><value>blabla</value></field> for each class
attribute. I get some errors and I don't know what�s up. Some
nullPointException.
<?xml version="1.0" encoding="ISO-8859-1"?>  <xsp:page language="java" xmlns:xsp="http://apache.org/xsp"; xmlns:xsp-request="http://apache.org/xsp/request/2.0"; xmlns:log="http://apache.org/xsp/log/2.0"; xmlns:capture="http://apache.org/cocoon/capture/1.0";> <page> <content> <registry>

<xsp:logic><![CDATA[

                        miCliente.Cliente cliente=new miCliente.Cliente(5);
                        java.util.Properties prop=cliente.getProperties();
                        java.util.Enumeration
propNames=prop.propertyNames();
                                        
                        String propName="hola";
                        String property="hola";
                                        
                        while (propNames.hasMoreElements() ){
                                                
                                propName=(String) propNames.nextElement();
                                property=prop.getProperty(propName);

]]>
<xsp:content>

                                <field>
                                        <name>
        
<xsp:expr>propName</xsp:expr>
                                        </name>
                                        <value>
        
<xsp:expr>property</xsp:expr>
                                        </value>
                                </field>

<![CDATA[ </xsp:content> } ]]> </xsp:logic> </registry> </content> </page> </xsp:page>


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Re: my first xsp page

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