Here is simple proof of concept (poc) web application I developed using maven, grails and jetty.
grails create-app poc
Add a pom.xml to the poc project with grails, hsqldb and jetty dependencies.
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>poc</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<name>mysqlProps - main dashboard project</name>
<url>http://vrittis.com</url>
<dependencies>
<dependency>
<groupId>org.grails</groupId>
<artifactId>grails-crud</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>org.grails</groupId>
<artifactId>grails-gorm</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.14</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty</artifactId>
<version>6.1.14</version>
</dependency>
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-util</artifactId>
<version>6.1.14</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.sf.ehcache</groupId>
<artifactId>ehcache-core</artifactId>
<version>1.7.2</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.5</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.tmatesoft.svnkit</groupId>
<artifactId>svnkit</artifactId>
<version>1.2.3.5521</version>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>opensymphony</groupId>
<artifactId>oscache</artifactId>
<version>2.4</version>
</dependency>
</dependencies>
<build>
<pluginManagement />
<plugins>
<plugin>
<groupId>org.grails</groupId>
<artifactId>grails-maven-plugin</artifactId>
<version>1.1-INTEGRATE</version>
<extensions>true</extensions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
<properties>
<grailsHome>${env.GRAILS_HOME}</grailsHome>
</properties>
</project>
Now you can just run
mvn grails:war
This will generate a war file you can deploy to your choice of web container.
But, If you want to run it standalone with jetty container:
Add _Events.groovy to your scripts folder to intersect grails life cycle and perform before and after war preparation tasks
to interleave jetty stubs.
scripts/_Events.groovy
unJarTask = {jarName,includePattern ->
ant.mkdir(dir:"$stagingDir/tmp/") ant.unjar(src:"$stagingDir/WEB-INF/lib/$jarName", dest:"$stagingDir/tmp") ant.move(todir:"$stagingDir"){ fileset(dir:"$stagingDir/tmp"){ include (name: "$includePattern/**") exclude (name: "META-INF/**") } } ant.delete(dir:"$stagingDir/tmp")}eventCreateWarStart = {warName, stagingDir -> ant.mkdir(dir:"$stagingDir/com/mycompany/") ant.move(file:"$stagingDir/WEB-INF/classes/com/mycompany/Start.class",todir:"$stagingDir/com/mycompany/") unJarTask("jetty-6.1.14.jar","org") unJarTask("jetty-util-6.1.14.jar","org") unJarTask("servlet-api-2.5-6.1.14.jar","javax")}
eventCreateWarEnd = {warName, stagingDir -> def libPath ="" File f = new File("$stagingDir/WEB-INF/lib") if(f.exists()){ f.eachFile{ libPath += "WEB-INF/lib/${it.name} " } } ant.jar(destfile:warName, update:true) { manifest { attribute(name: "Main-Class", value: "com.mycompany.Start")} manifest { attribute(name: "Class-Path", value: "$libPath") } }} Finally, Create a main class specified in the the manifest above com.mycompany.Start in src/java source directory.
The main class is referenced from Executable WARs with Jetty Blog from: Manuel Woelker
package com.mycompany;
import org.mortbay.jetty.Connector;
import org.mortbay.jetty.Server;
import org.mortbay.jetty.bio.SocketConnector;
import org.mortbay.jetty.webapp.WebAppContext;
import java.security.ProtectionDomain;
import java.net.URL;
public class Start {
public static void main(String[] args) throws Exception {
Server server = new Server();
SocketConnector connector = new SocketConnector();
// Set some timeout options to make debugging easier.
connector.setMaxIdleTime(1000 * 60 * 60);
connector.setSoLingerTime(-1);
connector.setPort(8080);
server.setConnectors(new Connector[] { connector });
WebAppContext context = new WebAppContext();
context.setServer(server);
context.setContextPath("/");
ProtectionDomain protectionDomain = Start.class.getProtectionDomain();
URL location = protectionDomain.getCodeSource().getLocation();
context.setWar(location.toExternalForm());
server.addHandler(context);
try {
server.start();
System.in.read();
server.stop();
server.join();
} catch (Exception e) {
e.printStackTrace();
System.exit(100);
}
}
}
Now, Run
mvn grails:war
You should have a war file which you can just run as
java -jar poc-0.1.war
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