Hello Lift community,

I'm a JEE developer and I'm looking for a cool and powerful web-framework,
which can use my JEE business/backend components (should be simply possible
with an JNDI lookup of my EnterpriseJavaBeans). So I found the liftweb.net
page and I'm really interested in using the Lift framework (because it is
flexible as rails, grails, etc. - I need no persistence-layer from a
web-framework, while this already exist's in my JEE environment ).

My aim:
- create a base-lift project using maven instead of the sbt ( it should be
integrated as a module into an existing maven-project later on )
- I would like to use the lift 2.5-M2 version
- I would like to use the scala version 2.9.2
- with that base I want to learn the power of lift (by reading the
exploring.lift /simply.lift books)
- in addition I also have to learn scala ( that should not be a big problem
)
- create a REST interface, that should be used from lift itself, but also
give the chance, that another client (like an android-app/ iOs app) can use
the interface. Business objects should interpreted/mapped/converted as JSON
objects for client's
- I'm using a JBoss AS 7.1 app-server. I think it should not be a problem
to deploy the lift-war file to the jboss instead of a jetty server. If not,
then a jetty will be used for the web-client.

My problem:
At the moment it is hard to create a simple base web-app structure. Beside
the simply-lift book I've started to read the exploring-lift book.

But following does not work ( Exploring Lift<http://exploring.liftweb.net/master/index-1.html> )
:

Maven should output several pages of text. It may stop and ask you to

 mvn jetty:run

It's a pity. ( In addition this is not a solution to use newer releases of
lift / scala )

Then I have downloaded the lift tar, which includes the different base
projects of lift. They are all configured for the sbt.

Should I use the blank project, remove all sbt artefacts and create a own
pom.xml? But then the big question is, what are the required dependencies,
what do I have to configure? ...

I hope, some of you can help me, what I have to do, to create a
lift-2.5/scala 2.9.2 blank web project with maven. Or can give me a base
pom.xml, which can be used for an own project.

Thank's a lot! : )

Kind regards!
Christian

Hello Lift community, 

 

I'm a JEE developer and I'm looking for a cool and powerful web-framework, which can use my JEE business/backend components (should be simply possible with an JNDI lookup of my EnterpriseJavaBeans). So I found the liftweb.net page and I'm really interested in using the Lift framework (because it is flexible as rails, grails, etc. - I need no persistence-layer from a web-framework, while this already exist's in my JEE environment ).

 

My aim:

- create a base-lift project using maven instead of the sbt ( it should be integrated as a module into an existing maven-project later on )

- I would like to use the lift 2.5-M2 version

- I would like to use the scala version 2.9.2

- with that base I want to learn the power of lift (by reading the exploring.lift /simply.lift books)

- in addition I also have to learn scala ( that should not be a big problem )

- create a REST interface, that should be used from lift itself, but also give the chance, that another client (like an android-app/ iOs app) can use the interface. Business objects should interpreted/mapped/converted as JSON objects for client's

- I'm using a JBoss AS 7.1 app-server. I think it should not be a problem to deploy the lift-war file to the jboss instead of a jetty server. If not, then a jetty will be used for the web-client.

 

My problem:

At the moment it is hard to create a simple base web-app structure. Beside the simply-lift book I've started to read the exploring-lift book. 

 

But following does not work ( Exploring Lift ) :

Next, we use Maven’s archetype:generate command to create the skeleton of our project:

mvn archetype:generate -U \

  -DarchetypeGroupId=net.liftweb \

  -DarchetypeArtifactId=lift-archetype-blank \

  -DarchetypeVersion=2.0 \

  -DarchetypeRepository=http://scala-tools.org/repo-releases \

  -DgroupId=demo.helloworld \

  -DartifactId=helloworld \

  -Dversion=1.0-SNAPSHOT

 

it will be created, but the following part

 

Maven should output several pages of text. It may stop and ask you to confirm the properties configuration, in which case you can just hit <enter>. At the end you should get a message that says BUILD SUCCESSFUL. You’ve now successfully created your first project! Don’t believe us? Let’s run it to confirm:
cd helloworld
mvn jetty:run

 

does not work.

 

 mvn jetty:run
[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building helloworld Project 1.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] >>> maven-jetty-plugin:6.1.22:run (default-cli) @ helloworld >>>
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 0.818s
[INFO] Finished at: Fri Nov 02 10:58:22 CET 2012
[INFO] Final Memory: 5M/112M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project helloworld: Could not resolve dependencies for project demo.helloworld:helloworld:war:1.0-SNAPSHOT: Failed to collect dependencies for [net.liftweb:lift-mapper:jar:2.0 (compile), javax.servlet:servlet-api:jar:2.5 (provided), junit:junit:jar:4.7 (test), org.mortbay.jetty:jetty:jar:[6.1.6,7.0) (test), org.scala-lang:scala-compiler:jar:2.7.7 (test)]: No versions available for javax.mail:mail:jar:[1.4,1.4.3) within specified range -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

 

My next try is to call a mvn install (I think it should be executed, before I can start the jetty), but that doesn't work, too. It will return the same error above.

 

It's a pity. ( In addition this is not a solution to use newer releases of lift / scala )

 

 

Then I have downloaded the lift tar, which includes the different base projects of lift. They are all configured for the sbt.

 

Should I use the blank project, remove all sbt artefacts and create a own pom.xml? But then the big question is, what are the required dependencies, what do I have to configure? ... 

 

I hope, some of you can help me, what I have to do, to create a lift-2.5/scala 2.9.2 blank web project with maven. Or can give me a base pom.xml, which can be used for an own project.

 

Thank's a lot! : )

 

Kind regards!

Christian

Hi andreak,

wow, thank you for your link to your example project.

You have combined many technologies together. So I have focused your "web"
project. Is it enough to include the dependency

<properties>
 <version.lift>2.5-M1</version.lift>
 <version.scala-maven-plugin>3.1.0</version.scala-maven-plugin>
 <version.scala>2.9.1</version.scala>
</properties>

...

<dependency>
  <groupId>net.liftweb</groupId>
  <artifactId>lift-webkit_${version.scala}</artifactId>
  <version>${version.lift}</version>
</dependency>
<dependency>
  <groupId>org.scala-lang</groupId>
  <artifactId>scala-library</artifactId>
  <version>${version.scala}</version>
</dependency>

....
<plugins>
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>scala-maven-plugin</artifactId>
<version>${version.scala-maven-plugin}</version>
<configuration>
<jvmArgs>
<jvmArg>-Xss1m</jvmArg>
<jvmArg>-Xmx512m</jvmArg>
</jvmArgs>
<scalaVersion>${version.scala}</scalaVersion>
<recompileMode>modified-only</recompileMode>
</configuration>
  </plugin>
</plugins>

to get everything I need to build a lift application? At the beginning I
would start with a plain lift- app to learn/understand it.

I'm sorry, why ever while formatting the code-block the post would
published (it seems that I have pressed the wrong key-combination)

wait for a moment. I will continue my post...

Okay, next try:

If I want to start with a new maven-lift project, is it enough to use the
scala / lift-webkit dependencies?

Is following possible:
- Using the base project ( scala_29/lift_blank ) from the lift - download
archive
- Create an own pom file to use it as a maven project
- Add the dependencies appropriate to your pom files

Many thanks for your help!!

Christian

Okay, next try:

 

If I want to start with a new maven-lift project, is it enough to use the scala / lift-webkit dependencies?

Is following possible:

- Using the base project ( scala_29/lift_blank ) from the lift - download archive

- Create an own pom file to use it as a maven project

- Add the dependencies appropriate to your pom files

 

Many thanks for your help!!

Those templates for 2.5 are very well maintain, I make sure they all work
as we release new versions of lift, so, if you decide to go the sbt route
you can trust them.
Thanks
Diego

Diego
Sent from my android cell
On Nov 2, 2012 8:40 AM, <andr...@officenet.no> wrote:

So,

I've started to create my base maven pom file. Following steps I have done:

1. I have create with netbeans a new maven project by using the
archtype lift-archetype-basic_2.9.1 to get another pom file.
2. Then I have deployed the generated war file on my local jboss to see,
that it works -> there was no problem
3. I have created an empty folder lift-maven-base and copied the src folder
including all content of the /scala_29/lift_blank download archive
4. Then I have started to write my pom file by influence of andreak's
project and the generated one of step 1. Here you can see the first version:
<?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/xsd/maven-4.0.0.xsd">

 <modelVersion>4.0.0</modelVersion>
 <groupId>de.lift</groupId>
 <artifactId>lift-mvn-base</artifactId>
 <name>lift maven base project</name>
 <version>1.0.0-SNAPSHOT</version>
 <packaging>war</packaging>

 <repositories>
 <repository>
 <id>scala-tools.org</id>
 <name>Scala-tools Maven2 Repository</name>
 <url>http://scala-tools.org/repo-releases</url>
 </repository>
 </repositories>

 <pluginRepositories>
 <pluginRepository>
 <id>scala-tools.org</id>
 <name>Scala-tools Maven2 Repository</name>
 <url>http://scala-tools.org/repo-releases</url>
 </pluginRepository>
 </pluginRepositories>

 <properties>
 <version.scala>2.9.1</version.scala>
 <version.lift>2.5-M1</version.lift>

 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 <project.reporting.outputEncoding>${project.build.sourceEncoding}
</project.reporting.outputEncoding>
 </properties>

 <dependencyManagement>
 <dependencies>
 <dependency>
 <groupId>org.scala-lang</groupId>
 <artifactId>scala-library</artifactId>
 <version>${version.scala}</version>
 </dependency>

 <dependency>
 <groupId>net.liftweb</groupId>
 <artifactId>lift-mapper_${version.scala}</artifactId>
 <version>${version.lift}</version>
 </dependency>

 <dependency>
 <groupId>net.liftmodules</groupId>
 <artifactId>lift-jquery-module_${version.scala}</artifactId>
 <version>2.5-M1-1.0</version>
 </dependency>                
 </dependencies>    
 </dependencyManagement>

 <dependencies>
 <dependency>
 <groupId>org.scala-lang</groupId>
 <artifactId>scala-library</artifactId>
 </dependency>
 <dependency>
 <groupId>net.liftweb</groupId>
 <artifactId>lift-mapper_${version.scala}</artifactId>
 </dependency>                        
 <dependency>
 <groupId>net.liftmodules</groupId>
 <artifactId>lift-jquery-module_${version.scala}</artifactId>
 </dependency>                
 </dependencies>

 <build>
 <sourceDirectory>src/main/scala</sourceDirectory>
 <testSourceDirectory>src/test/scala</testSourceDirectory>

 <pluginManagement>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-eclipse-plugin</artifactId>
 <version>2.9</version>
 </plugin>
 <plugin>
 <groupId>net.alchim31.maven</groupId>
 <artifactId>scala-maven-plugin</artifactId>
 <version>3.1.0</version>
 </plugin>
 </plugins>      
 </pluginManagement>

 <plugins>    
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-eclipse-plugin</artifactId>
 <configuration>
 <downloadSources>true</downloadSources>
 <additionalProjectnatures>
 <projectnature>ch.epfl.lamp.sdt.core.scalanature</projectnature>
 </additionalProjectnatures>
 <additionalBuildcommands>
 <buildcommand>ch.epfl.lamp.sdt.core.scalabuilder</buildcommand>
 </additionalBuildcommands>
 <classpathContainers>
 <classpathContainer>ch.epfl.lamp.sdt.launching.SCALA_CONTAINER
</classpathContainer>
 <classpathContainer>org.eclipse.jdt.launching.JRE_CONTAINER
</classpathContainer>
 </classpathContainers>ll
 </configuration>
 </plugin>        
 <plugin>
 <groupId>net.alchim31.maven</groupId>
 <artifactId>scala-maven-plugin</artifactId>
 <executions>
 <execution>
 <goals>
 <goal>compile</goal>
 <goal>testCompile</goal>
 </goals>
 </execution>
 </executions>

 <configuration>
 <charset>${project.build.sourceEncoding}</charset>      
 <jvmArgs>
 <jvmArg>-Xms64m</jvmArg>
 <jvmArg>-Xmx1024m</jvmArg>
 </jvmArgs>
 <scalaVersion>${version.scala}</scalaVersion>
 <recompileMode>modified-only</recompileMode>
 </configuration>
 </plugin>
 </plugins>
 </build>

</project>

5. Normally I'm using the Eclipse IDE ( currently Juno, while I don't like
the m2plugin - I'm using instead of it the maven-eclipse-plugin ). So I've
found the run-jetty-run eclipse plugin
6. mvn install works, but the jetty (started inside from eclipse) throws an
error:
<div>
Error locating template:
<b>/templates-hidden/default.html</b>
<br/>
Message:
<b>expected closing tag of div</b>
<br/>
<pre>
scala.xml.parsing.FatalError: expected closing tag of
divscala.xml.parsing.MarkupParser$class.errorNoEnd(MarkupParser.scala:41)
net.liftweb.util.PCDataXmlParser.errorNoEnd(PCDataMarkupParser.scala:98)
scala.xml.parsing.MarkupParserCommon$class.xEndTag(MarkupParserCommon.scala :93)
net.liftweb.util.PCDataXmlParser.xEndTag(PCDataMarkupParser.scala:98)
scala.xml.parsing.MarkupParser$class.element1(MarkupParser.scala:543)
net.liftweb.util.PCDataXmlParser.element1(PCDataMarkupParser.scala:98)
scala.xml.parsing.MarkupParser$class.content1(MarkupParser.scala:396)
net.liftweb.util.PCDataXmlParser.content1(PCDataMarkupParser.scala:98)
scala.xml.parsing.MarkupParser$class.content(MarkupParser.scala:417)
net.liftweb.util.PCDataXmlParser.content(PCDataMarkupParser.scala:98)
scala.xml.parsing.MarkupParser$class.element1(MarkupParser.scala:542)
net.liftweb.util.PCDataXmlParser.element1(PCDataMarkupParser.scala:98)
scala.xml.parsing.MarkupParser$class.content1(MarkupParser.scala:396)
net.liftweb.util.PCDataXmlParser.content1(PCDataMarkupParser.scala:98)
....

The first time some closing tags of h1 and img were expected, but that one
I don't find (see the attachment). I think I can remove the whole html
files, if I will start to implement the app of the exploring lift book.

Okay, to this time I think it looks good.

But what do you experts think? Would you optimize something of the pom, or
would you do something completly different?

Please give me some feedback (Remember: This should the base to learn lift
by reading the free books with the examples. Later on this base will be
used for the proper project).

Thank you very much : )

If someone has enough time or is interested in, I have add the base-
project as an attachment.

lift_mvn_base.zip 23K Download

So,

 

I've started to create my base maven pom file. Following steps I have done:

[snip]

6. mvn install works, but the jetty (started inside from eclipse) throws an error:

<div>

Error locating template:

<b>/templates-hidden/default.html</b>

<br/>

Message:

<b>expected closing tag of div</b>

<br/>

<pre>

scala.xml.parsing.FatalError: expected closing tag of divscala.xml.parsing.MarkupParser$class.errorNoEnd(MarkupParser.scala:41) net.liftweb.util.PCDataXmlParser.errorNoEnd(PCDataMarkupParser.scala:98) scala.xml.parsing.MarkupParserCommon$class.xEndTag(MarkupParserCommon.scala:93) net.liftweb.util.PCDataXmlParser.xEndTag(PCDataMarkupParser.scala:98) scala.xml.parsing.MarkupParser$class.element1(MarkupParser.scala:543) net.liftweb.util.PCDataXmlParser.element1(PCDataMarkupParser.scala:98) scala.xml.parsing.MarkupParser$class.content1(MarkupParser.scala:396) net.liftweb.util.PCDataXmlParser.content1(PCDataMarkupParser.scala:98) scala.xml.parsing.MarkupParser$class.content(MarkupParser.scala:417) net.liftweb.util.PCDataXmlParser.content(PCDataMarkupParser.scala:98) scala.xml.parsing.MarkupParser$class.element1(MarkupParser.scala:542) net.liftweb.util.PCDataXmlParser.element1(PCDataMarkupParser.scala:98) scala.xml.parsing.MarkupParser$class.content1(MarkupParser.scala:396) net.liftweb.util.PCDataXmlParser.content1(PCDataMarkupParser.scala:98)
....
 

The first time some closing tags of h1 and img were expected, but that one I don't find (see the attachment). I think I can remove the whole html files, if I will start to implement the app of the exploring lift book.

 

Okay, to this time I think it looks good.

 

But what do you experts think? Would you optimize something of the pom, or would you do something completly different?

 

Please give me some feedback (Remember: This should the base to learn lift by reading the free books with the examples. Later on this base will be used for the proper project).

 

Thank you very much : )

 

If someone has enough time or is interested in, I have add the base- project as an attachment.

That's correct, I have installed the run-jetty-run eclipse plugin. Not the
maven plugin. But I will configure the jetty maven plugin and will attach
the sources again... so you should be able to start the project without
anyting else....

Am Freitag, 2. November 2012 19:38:33 UTC+1 schrieb andreak:

Okay,

I have add the jetty plugin for maven and it works! Why ever the
run-jetty-run eclipse plugin has some issues?! I would like to use the
run-jetty-run for hot-deployment (any changes -> automatically deployment).

If I would use the maven-jetty-plugin, I have also to configure the jrebel
plugin? (this requires a licence, right?) Or are there another ways for
hot-deployment techniques?

What do you think about the pom configuration (especially the scala / lift
config). Is it okay, or do you prefer some other settings when writing lift
apps?

Also here is the new attachment.

Christian

PS: okay, I've found, that the run-jetty-run plugin provides the
version 6.1.26. The maven plugin is version 8.1.7.v20120910. May that's the
problem...

Am Freitag, 2. November 2012 19:41:47 UTC+1 schrieb Christian Thomas:

lift_mvn_base-inc-jetty.zip 23K Download

Okay,

 

I have add the jetty plugin for maven and it works! Why ever the run-jetty-run eclipse plugin has some issues?! I would like to use the run-jetty-run for hot-deployment (any changes -> automatically deployment). 

 

If I would use the maven-jetty-plugin, I have also to configure the jrebel plugin? (this requires a licence, right?) Or are there another ways for hot-deployment techniques?

 

What do you think about the pom configuration (especially the scala / lift config). Is it okay, or do you prefer some other settings when writing lift apps?

 

Also here is the new attachment.

Hey andreak,

thanks for response.

Am Freitag, 2. November 2012 21:34:24 UTC+1 schrieb andreak:

Perfect. Now I have a base to start learning lift / scala : )

Thank you for your time!

--

So, I have subscribed a free jRebel scala licence and it work's fine!

@andreak: I have found in your pom following configured plugin:

 <plugin>
 <groupId>org.zeroturnaround</groupId>
 <artifactId>javarebel-maven-plugin</artifactId>
 <executions>
 <execution>
 <id>generate-rebel-xml</id>
 <phase>process-resources</phase>
 <goals>
 <goal>generate</goal>
 </goals>
 </execution>
 </executions>
 </plugin>

during the jRebel licence activation a maven guide was popup'd and gives me
the following one:

 <plugin>
 <groupId>org.zeroturnaround</groupId>
 <artifactId>jrebel-maven-plugin</artifactId>
 <version>1.1.1</version>
 </plugin>
...
 <plugin>
 <groupId>org.zeroturnaround</groupId>
 <artifactId>jrebel-maven-plugin</artifactId>
 <executions>
 <execution>
 <id>generate-rebel-xml</id>
 <phase>process-resources</phase>
 <goals>
 <goal>generate</goal>
 </goals>
 </execution>
 </executions>
 </plugin>

May it is interesting for you, that another, may newer jrebel-maven-plugin
instead of the javarebel-maven-plugin exist's.

I like it. Simply run mvn jetty:run and mvn scala:cc and thats it.

To the run-jetty-run (a may alternative for hot-deployment):
I have switched  to version 7 and 8, but problem still exists. The eclipse
internal codepage is set to UTF8 - like the maven env.

Kind regards!
Christian

Am Samstag, 3. November 2012 23:37:31 UTC+1 schrieb Christian Thomas:

I currently use maven with my lift projects because I know maven fairly
well and it's integrated with will intellij, which I find to be a very
productive tool for scala programming.  The IDE can read the pom files and
automatically manage my dependencies in addition to the other useful
plugins it has.

I created a sort of skeleton app based on lift 2.5-SNAPSHOT and scala 2.9.2
that may also help you jump-start.

I typically have a parent pom, a template project, and then other
sub-projects that either inherit from or are clones of the template project.

It's also set up with my typical setup.  MySQL + Lift + Squeryl + Twitter
Bootstrap.

https://github.com/serveace/maven-lift-skeleton/tree/master/parent/li... if
you want to clone it.

You should be able to clone it, run mvn install, and drop the war in any
container (tomcat7, for example) and have it run.

-Austen