CODEWITHSUNDEEP
javatomcatwicket
francesc
francesc

Reputation: 49

bare metal wicket/tomcat HelloWorld example

I'm a wicket newbie and would like to deploy the simple well-known helloworld from wicket-examples but without IDE, ant or maven. What I've done:

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
         version="2.4">

    <display-name>Wicket Examples</display-name>
    <filter>
        <filter-name>HelloWorldApplication</filter-name>
        <filter-class>org.apache.wicket.protocol.http.WicketFilter</filter-class>
        <init-param>
          <param-name>applicationClassName</param-name>
          <param-value>HelloWorldApplication</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>HelloWorldApplication</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

HelloWorld.html:

<html>
  <body>
    <span wicket:id="message">Message goes here!</span>
  </body>
</html>

HelloWorld.java:

import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.markup.html.basic.Label;

public class HelloWorld extends WebPage
{
  public HelloWorld()
  {
    add(new Label("message", "Hello World!"));
  }
}

HelloWorldApplication.java:

import org.apache.wicket.protocol.http.WebApplication;

public class HelloWorldApplication extends WebApplication
{
    public Class getHomePage()
    {
        return HelloWorld.class;
    }
}

wicket-HelloWorld.war:

WEB-INF/
WEB-INF/web.xml
WEB-INF/classes/
WEB-INF/classes/HelloWorldApplication.class
WEB-INF/classes/HelloWorld.class
WEB-INF/classes/HelloWorld.html
WEB-INF/lib/
WEB-INF/lib/wicket-1.4.15.jar
WEB-INF/lib/slf4j-api.jar

I'm not sure if I need slf4j-api.jar for this simple example

When deployed to tomcat http://localhost:8080/wicket-HelloWorld/ gives:

The requested resource () is not available

What I'm doing wrong?

Upvotes: 3

Views: 3837

Answers (2)

francesc
francesc

Reputation: 49

I've been able to make it work:

1.- I added slf4j-jdk14.jar. Manning Wicket in action bonus chapter 15 was wrong. It tells only to add slf4j-api.jar

2.- wicket-1.4.15.jar MUST BE in WEB-INF/lib. Trying to include it in catalina.properties under shared.loader or $CATALINA_BASE/lib doesn't work for me; despite some webs recommending these places as alternatives to include libraries at runtime.

I've found almost no documentation to build wicket apps using only javac. I think somebody experienced enough should write a little HOW-TO. You're almost forced to use Maven to program even the simplest application in wicket

Regards and thanks to all for the help

Francesc

Upvotes: 1

Tomasz Nurkiewicz
Tomasz Nurkiewicz

Reputation: 340693

It's hard to tell what is wrong with your application. I created a quick sample as follows to test the configuration:

$ mvn archetype:generate

Choosing wicket-archetype-quickstart (189 on my machine), version 1.4.15...

$ mvn tomcat:run

Browsing to http://localhost:8080/wicket and the application works like a charm.

$ mvn package
$ cd target/wicket-1.0-SNAPSHOT/WEB-INF/lib

And these are the libraries required:

  • log4j-1.2.14.jar
  • slf4j-api-1.5.8.jar
  • slf4j-log4j12-1.5.8.jar
  • wicket-1.4.15.jar

Sources:

$ cd src/main
$ tree

And my source structure is:

.
|-- java
|   `-- com
|       `-- blogspot
|           `-- nurkiewicz
|               |-- HomePage.html
|               |-- HomePage.java
|               `-- WicketApplication.java
|-- resources
|   `-- log4j.properties
`-- webapp
    `-- WEB-INF
        `-- web.xml

I understand you don't want to use maven (great if you are learning and trying to do anything from scratch), but without any further information I can only advice you to look at my working example above. First of your libraries set seems to be incomplete.

Upvotes: 0

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