exec-maven-plugin with npm install - maven

Question

I try to use exec-maven-plugin in my project.
Here is the code
<plugin>
<artifactId>exec-maven-plugin</artifactId>
<groupId>org.codehaus.mojo</groupId>
<version>1.6.0</version>
<executions>
<execution>
<id>npm install</id>
<goals>
<goal>exec</goal>
</goals>
<phase>generate-resources</phase>
<configuration>
<executable>${node.directory}/${npm.executable}</executable>
<arguments>
<argument>install</argument>
</arguments>
<workingDirectory>src/main/angular2/tourism</workingDirectory>
<target>
<echo message="Npm install" />
</target>
</configuration>
</execution>
</executions>
</plugin>
Here is my directory structure
And the mentioned error is
/Users/admin/Application-Marwen/workspace/Tourism/Tourism-Web/node/npm: line 34: node: command not found
Could you please help me
I use know frontend-maven-plugin
Here is the code
<plugin>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<version>1.6</version>
<configuration>
<workingDirectory>src/main/angular5/tourism</workingDirectory>
<!-- where to install npm -->
<installDirectory>src/main/angular5/tourisml</installDirectory>
</configuration>
<executions>
<execution>
<id>install node and npm</id>
<goals>
<goal>install-node-and-npm</goal>
</goals>
<phase>generate-resources</phase>
<configuration>
<nodeVersion>v8.11.3</nodeVersion>
<npmVersion>6.3.0</npmVersion>
</configuration>
</execution>
<execution>
<id>npm install</id>
<goals>
<goal>npm</goal>
</goals>
<!-- Optional configuration which provides for running any npm command -->
<configuration>
<arguments>install</arguments>
<workingDirectory>src/main/angular5/tourism</workingDirectory>
</configuration>
</execution>
<execution>
<id>prod</id>
<goals>
<goal>npm</goal>
</goals>
<configuration>
<arguments>run-script build</arguments>
<workingDirectory>src/main/angular5/tourism</workingDirectory>
</configuration>
<phase>generate-resources</phase>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<finalName>${project.artifactId}-${project.version}.zip</finalName>
<appendAssemblyId>false</appendAssemblyId>
</configuration>
<executions>
<execution>
<id>cfg-main-resources</id>
<goals>
<goal>single</goal>
</goals>
<phase>package</phase>
<configuration>
<descriptors>
<descriptor>${basedir}/src/main/angular5/tourism/assembly.xml</descriptor>
</descriptors>
</configuration>
</execution>
</executions>
</plugin>
And the assembly.xml file
<assembly xmlns="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.3"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/plugins/maven-assembly-plugin/assembly/1.1.3 http://maven.apache.org/xsd/assembly-1.1.3.xsd">
<id>distribution</id>
<formats>
<format>zip</format>
</formats>
<includeBaseDirectory>false</includeBaseDirectory>
<fileSets>
<fileSet>
<outputDirectory>statics</outputDirectory>
<directory>dist</directory>
<includes>
<include>**/*</include>
</includes>
</fileSet>
</fileSets>
The objective is to prepare a zip file containing the compiled code to deploy it on server
Here is the obtained directory structure
1) I don't understand why the dist folder does not contain the compiled code (I wonder furthermore what it must contain exactly)
2) node and npm are installed in the directory tourisml/node, why
3) there is an error stating that
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.4:single (cfg-main-resources) on project tourism-web: Failed to create assembly: Error creating assembly archive distribution: You must set at least one file. -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-assembly-plugin:2.4:single (cfg-main-resources) on project tourism-web: Failed to create assembly: Error creating assembly archive distribution: You must set at least one file.
Normally I should obtaine one zip file (${project.artifactId}-${project.version}.zip) and I suppose it failed because there is no files in. Is that correct ?

Answer 1

Instead of using exec-maven-plugin, I suggest you to take a look at the frontend-maven-plugin to build your Node sources using npm install.
Using that plugin, you don't need to have npm or node installed on your machine : the plugin manages all by itself, so you should not encounter issues like command not found. Configuration like the following should work :
<plugin>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<version>1.6</version>
<configuration>
<workingDirectory>src/main/angular5/tourism</workingDirectory>
<!-- where to install npm -->
<installDirectory>${project.build.directory}/install</installDirectory>
</configuration>
<executions>
<execution>
<id>install-node-and-npm</id>
<goals>
<goal>install-node-and-npm</goal>
</goals>
<configuration>
<nodeVersion>v${node.version}</nodeVersion>
<npmVersion>${npm.version}</npmVersion>
</configuration>
</execution>
<execution>
<id>npm-install</id>
<goals>
<goal>npm</goal>
</goals>
<configuration>
<arguments>install</arguments>
</configuration>
</execution>
</executions>
</plugin>

Answer 2

I have installed node and moved the installed folder under ${project.baseUri}/node/.
That error got resolved now and I can able to do npm install using below command in Command Prompt.
c:\main\prjt\apphost_prjt>mvn frontend:npm

Answer 3

Finally, I used frontend-maven-plugin
Here is an extract of the pom.xml
<plugin>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<version>1.6</version>
<configuration>
<workingDirectory>src/main/angular5/tourism</workingDirectory>
<!-- where to install npm -->
<installDirectory>temp</installDirectory>
</configuration>
<executions>
<execution>
<id>install node and npm</id>
<goals>
<goal>install-node-and-npm</goal>
</goals>
<phase>generate-resources</phase>
<configuration>
<nodeVersion>v8.11.3</nodeVersion>
<npmVersion>6.3.0</npmVersion>
</configuration>
</execution>
<execution>
<id>npm install</id>
<goals>
<goal>npm</goal>
</goals>
<!-- Optional configuration which provides for running any npm command -->
<configuration>
<arguments>install</arguments>
</configuration>
</execution>
<execution>
<id>prod</id>
<goals>
<goal>npm</goal>
</goals>
<configuration>
<arguments>run-script build</arguments>
</configuration>
<phase>generate-resources</phase>
</execution>
</executions>
</plugin>
Thank you for your answers