Ascii Cast for Using Gradle For Building A Webapp by Victor Savkin

victor_savkin_3_using_gradle_for_building_a_webapp.asciicast.txt

Original Video: http://vimeo.com/18252871 by Victor Savkin ( http://twitter.com/avix1000 )
Asciicast by Ian Moss ( http://twitter.com/oceanician ) of CTI Digital: Grails team - http://www.ctisn.com
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"Hi, I'm Victor Savkin."
"3rd Gradle screencast."

"Create the gradle build file"
"How to run the app"
"How to create the war"

"Going to use Groovy this time instead of Java."
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*Terminal:
vim build.gradle
mkdir src
mkdir src/main
mkdir src/main/groovy
vim build.gradle
gradle idea
------------------------------------------------------------
*File:build.xml

apply plugin: 'groovy'
------------------------------------------------------------
*Terminal:

mkdir src/main/webapp
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*File:build.xml

apply plugin: 'war'
apply plugin: 'idea'
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2.44 - "Let's open idea"

*Terminal: 
gradle idea
ls -al

*Generates->
.gradle
build.gradle
src
webapp.iml
webapp.ipr
webapp.iws

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"First of all, we will add groovy support to idea."
(Via right click webapp, and menu 'Add Framework Support' and select 'Groovy')

"We will create a simple servlet, in the package gradlescreencast."

*Creates class: GoodGuyServlet.groovy

package gradlescreencast

import javax.servlet.http.HttpServlet
import javax.servlet.http.HttpServletRequest
import javax.servlet.http.HttpServletResponse

class GoodGuyServlet extends HttpServlet {
  protected void doGet(HttpServletRequest req, HttpServletResponse resp) {
    String name = req.getParameter("name")
    resp.outputStream.withWriter {
      it << "Hi ${name}!"
    }
  }
}

3.44 - 
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4.22 - "create XML file to map" - web.xml

*Creates new directory 'WEB-INF' under src/webapp
*Creates new file 'web.xml'

<web-app>
  <servlet>
    <servlet-name>GoodGuy</servlet-name>
    <servlet-class>gradlescreencast.GoodGuyServlet</servlet-class>
  </servlet>

  <servlet-mapping>
    <servlet-name>GoodGuy</servlet-name>
    <url-pattern>/hi</url-pattern>
  </servlet-mapping>
  
</web-app>
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create a WAR file
Terminal:
gradle war
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5.08 - "It doesn't work, but this is not a suprise as didn't add in groovy library."
5.21 - "First of all we add in the maven central repositories."
5.40 - "And then the dependancy itself"

IDEA: edit 'build.gradle'

apply plugin: 'groovy'
apply plugin: 'war'
apply plugin: 'idea'

repositories {
  mavenCentral()
}

dependancies {
  groovy 'org.codehaus.groovy:groovy-all:1.7.5'
  providedCompile 'javax.servlet:servlet-api:2.5'
}
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6.08 - "try to create war once again"
Terminal:
gradle war

6.26 - "It works"

(see build/libs/webapp.war)

7.05 - "add jetty plugin to the build file"
vim build.gradle
------------------------------------------------------------
Terminal:
try 
gradle jettyRun

"open web browser to:
http://localhost:8080/webapp/hi?name=John

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7.48 - "Conventention over Configuration allows you to not to think without lots of parameters."
	"The configuration that is usually a nightmare with Ant or Maven looks very good and concise."