使用eirslett：frontend-maven-plugin在gitlab.com上运行maven
我有一个前端项目模块的maven项目，我用eirslett：frontend-maven-plugin包装。 它在当地工作正常，但在gitlab.com生成失败。
我用这个.gitlab-ci.yml启动构build：
image: maven:3.3.9-jdk-8-onbuild build: script: "mvn clean install -B -X" 而这个pom.xml：
<?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>fr.nev.oms</groupId> <artifactId>oms-frontend</artifactId> <packaging>jar</packaging> <parent> <groupId>fr.nev.oms</groupId> <artifactId>myproject</artifactId> <version>1.0.0-SNAPSHOT</version> </parent> <build> <plugins> <plugin> <groupId>com.github.eirslett</groupId> <artifactId>frontend-maven-plugin</artifactId> <version>1.3</version> <configuration> <!--<configuration>--> <nodeVersion>v4.4.7</nodeVersion> <npmVersion>3.10.5</npmVersion> <!--</configuration>--> <environmentVariables> <NODE_ENV>production</NODE_ENV> <API_URL></API_URL> <APP_VERSION></APP_VERSION> </environmentVariables> </configuration> <executions> <execution> <id>install node and npm</id> <goals> <goal>install-node-and-npm</goal> </goals> </execution> <execution> <id>npm install</id> <goals> <goal>npm</goal> </goals> <configuration> <arguments>install</arguments> </configuration> </execution> <execution> <id>npm run build</id> <goals> <goal>npm</goal> </goals> <configuration> <arguments>run build</arguments> </configuration> </execution> </executions> </plugin> </plugins> </build> </project>
在gitlab.com上，我有这个痕迹：
[DEBUG] Configuring mojo com.github.eirslett:frontend-maven-plugin:1.3:install-node-and-npm from plugin realm ClassRealm[plugin>com.github.eirslett:frontend-maven-plugin:1.3, parent: sun.misc.Launcher$AppClassLoader@677327b6] [DEBUG] Configuring mojo 'com.github.eirslett:frontend-maven-plugin:1.3:install-node-and-npm' with basic configurator --> [DEBUG] (f) environmentVariables = {API_URL=null, APP_VERSION=null, NODE_ENV=production} [DEBUG] (f) nodeDownloadRoot = https://nodejs.org/dist/ [DEBUG] (f) nodeVersion = v4.4.7 [DEBUG] (f) npmDownloadRoot = http://registry.npmjs.org/npm/-/ [DEBUG] (f) npmVersion = 3.10.5 [DEBUG] (f) project = MavenProject: fr.nev.oms:oms-frontend:1.0.0-SNAPSHOT @ /builds/nieven/on-my-shelves/oms-frontend/pom.xml [DEBUG] (f) repositorySystemSession = org.eclipse.aether.DefaultRepositorySystemSession@a10c1b5 [DEBUG] (f) session = org.apache.maven.execution.MavenSession@644abb8f [DEBUG] (f) skip = false [DEBUG] (f) skipTests = false [DEBUG] (f) workingDirectory = /builds/nieven/on-my-shelves/oms-frontend [DEBUG] (f) execution = com.github.eirslett:frontend-maven-plugin:1.3:install-node-and-npm {execution: install node and npm} [DEBUG] -- end configuration -- [INFO] Installing node version v4.4.7 [DEBUG] Creating install directory /builds/nieven/on-my-shelves/oms-frontend/node [DEBUG] Creating temporary directory /builds/nieven/on-my-shelves/oms-frontend/node/tmp [INFO] Downloading https://nodejs.org/dist/v4.4.7/node-v4.4.7-linux-x64.tar.gz to /root/.m2/repository/com/github/eirslett/node/4.4.7/node-4.4.7-linux-x64.tar.gz [INFO] No proxies configured [INFO] No proxy was configured, downloading directly [INFO] Unpacking /root/.m2/repository/com/github/eirslett/node/4.4.7/node-4.4.7-linux-x64.tar.gz into /builds/nieven/on-my-shelves/oms-frontend/node/tmp [INFO] Copying node binary from /builds/nieven/on-my-shelves/oms-frontend/node/tmp/node-v4.4.7-linux-x64/bin/node to /builds/nieven/on-my-shelves/oms-frontend/node/node [DEBUG] Deleting temporary directory /builds/nieven/on-my-shelves/oms-frontend/node/tmp [INFO] Installed node locally. [INFO] Installing npm version 3.10.5 [INFO] Downloading http://registry.npmjs.org/npm/-/npm-3.10.5.tgz to /root/.m2/repository/com/github/eirslett/npm/3.10.5/npm-3.10.5.tar.gz [INFO] No proxies configured [INFO] No proxy was configured, downloading directly [INFO] Unpacking /root/.m2/repository/com/github/eirslett/npm/3.10.5/npm-3.10.5.tar.gz into /builds/nieven/on-my-shelves/oms-frontend/node/node_modules [INFO] Installed npm locally. [INFO] [INFO] --- frontend-maven-plugin:1.3:npm (npm install) @ oms-frontend --- [DEBUG] Configuring mojo com.github.eirslett:frontend-maven-plugin:1.3:npm from plugin realm ClassRealm[plugin>com.github.eirslett:frontend-maven-plugin:1.3, parent: sun.misc.Launcher$AppClassLoader@677327b6] [DEBUG] Configuring mojo 'com.github.eirslett:frontend-maven-plugin:1.3:npm' with basic configurator --> [DEBUG] (f) arguments = install [DEBUG] (f) environmentVariables = {API_URL=null, APP_VERSION=null, NODE_ENV=production} [DEBUG] (f) npmInheritsProxyConfigFromMaven = true [DEBUG] (f) project = MavenProject: fr.nev.oms:oms-frontend:1.0.0-SNAPSHOT @ /builds/nieven/on-my-shelves/oms-frontend/pom.xml [DEBUG] (f) repositorySystemSession = org.eclipse.aether.DefaultRepositorySystemSession@a10c1b5 [DEBUG] (f) session = org.apache.maven.execution.MavenSession@644abb8f [DEBUG] (f) skip = false [DEBUG] (f) skipTests = false [DEBUG] (f) workingDirectory = /builds/nieven/on-my-shelves/oms-frontend [DEBUG] (f) execution = com.github.eirslett:frontend-maven-plugin:1.3:npm {execution: npm install} [DEBUG] -- end configuration -- [INFO] Running 'npm install' in /builds/nieven/on-my-shelves/oms-frontend [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary: [INFO] [INFO] myproject .......................................... SUCCESS [ 3.446 s] [INFO] oms-frontend ....................................... FAILURE [ 8.628 s] [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 12.254 s [INFO] Finished at: 2016-12-11T12:14:19+00:00 [INFO] Final Memory: 14M/197M [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.3:npm (npm install) on project oms-frontend: Execution npm install of goal com.github.eirslett:frontend-maven-plugin:1.3:npm failed. NullPointerException -> [Help 1] org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal com.github.eirslett:frontend-maven-plugin:1.3:npm (npm install) on project oms-frontend: Execution npm install of goal com.github.eirslett:frontend-maven-plugin:1.3:npm failed. at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) Caused by: org.apache.maven.plugin.PluginExecutionException: Execution npm install of goal com.github.eirslett:frontend-maven-plugin:1.3:npm failed. at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) ... 20 more Caused by: java.lang.NullPointerException at java.lang.ProcessEnvironment.validateValue(ProcessEnvironment.java:120) at java.lang.ProcessEnvironment.access$400(ProcessEnvironment.java:61) at java.lang.ProcessEnvironment$Value.valueOf(ProcessEnvironment.java:203) at java.lang.ProcessEnvironment$StringEnvironment.put(ProcessEnvironment.java:243) at java.lang.ProcessEnvironment$StringEnvironment.put(ProcessEnvironment.java:221) at java.util.AbstractMap.putAll(AbstractMap.java:281) at com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutor.createProcessBuilder(ProcessExecutor.java:103) at com.github.eirslett.maven.plugins.frontend.lib.ProcessExecutor.<init>(ProcessExecutor.java:37) at com.github.eirslett.maven.plugins.frontend.lib.NodeExecutor.<init>(NodeExecutor.java:20) at com.github.eirslett.maven.plugins.frontend.lib.NodeTaskExecutor.execute(NodeTaskExecutor.java:58) at com.github.eirslett.maven.plugins.frontend.mojo.NpmMojo.execute(NpmMojo.java:62) at com.github.eirslett.maven.plugins.frontend.mojo.AbstractFrontendMojo.execute(AbstractFrontendMojo.java:89) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) ... 21 more [ERROR]
你对这个问题的解决scheme有什么想法吗？
我有类似的问题（build立传递在赢得和Linux上的这个NullPointer失败）和更新frontend-maven-plugin到最新（1.4在我的情况）帮助。
<plugin> <groupId>com.github.eirslett</groupId> <artifactId>frontend-maven-plugin</artifactId> <version>1.4</version>