我刚刚学习 Maven,所以这可能是显而易见的,但我找不到一种简单的方法来列出给定项目的每个 Maven 生命周期阶段相关的目标。

我看到 Maven 默认生命周期阶段和相应的默认目标都有记录 这里. 。到目前为止,我的理解是每个 pom.xml 都可以将附加目标绑定到每个生命周期阶段。

那么,是否有一个 mvn 命令来确定给定项目的每个生命周期阶段将运行的目标?如果没有,我想我只需要查看每个新的 Maven 项目的 pom.xml 即可解决这个问题?

有帮助吗?

解决方案

mvn help:describe -Dcmd=compile(或任何其他有效的相)

其他提示

buildplan-maven-plugin 是一个极好的工具用于显示目标是如何结合到相。

下面是可以通过命令的例子。该命令会自动下载,如果尚未安装它安装插件。

通过的顺序列表的目标,他们将执行

> mvn fr.jcgay.maven.plugins:buildplan-maven-plugin:list

PLUGIN                  | PHASE                  | ID                    | GOAL
--------------------------------------------------------------------------------------------
maven-enforcer-plugin   | validate               | default               | enforce
maven-dependency-plugin | process-sources        | default               | copy-dependencies
maven-resources-plugin  | process-resources      | default-resources     | resources
maven-compiler-plugin   | compile                | default-compile       | compile
maven-resources-plugin  | process-test-resources | default-testResources | testResources
maven-compiler-plugin   | test-compile           | default-testCompile   | testCompile
maven-surefire-plugin   | test                   | default-test          | test
maven-jar-plugin        | package                | default-jar           | jar
maven-assembly-plugin   | package                | make-assembly         | single
maven-install-plugin    | install                | default-install       | install
maven-deploy-plugin     | deploy                 | default-deploy        | deploy

组的目标通过相

> mvn fr.jcgay.maven.plugins:buildplan-maven-plugin:list-phase

validate -----------------------------------------------------------------
    + maven-enforcer-plugin   | default               | enforce
process-sources ----------------------------------------------------------
    + maven-dependency-plugin | default               | copy-dependencies
process-resources --------------------------------------------------------
    + maven-resources-plugin  | default-resources     | resources
compile ------------------------------------------------------------------
    + maven-compiler-plugin   | default-compile       | compile
process-test-resources ---------------------------------------------------
    + maven-resources-plugin  | default-testResources | testResources
test-compile -------------------------------------------------------------
    + maven-compiler-plugin   | default-testCompile   | testCompile
test ---------------------------------------------------------------------
    + maven-surefire-plugin   | default-test          | test
package ------------------------------------------------------------------
    + maven-jar-plugin        | default-jar           | jar
    + maven-assembly-plugin   | make-assembly         | single
install ------------------------------------------------------------------
    + maven-install-plugin    | default-install       | install
deploy -------------------------------------------------------------------
    + maven-deploy-plugin     | default-deploy        | deploy

组的目标通过插件

> mvn fr.jcgay.maven.plugins:buildplan-maven-plugin:list-plugin

maven-enforcer-plugin ---------------------------------------------------
    + validate               | default               | enforce
maven-dependency-plugin -------------------------------------------------
    + process-sources        | default               | copy-dependencies
maven-resources-plugin --------------------------------------------------
    + process-resources      | default-resources     | resources
    + process-test-resources | default-testResources | testResources
maven-compiler-plugin ---------------------------------------------------
    + compile                | default-compile       | compile
    + test-compile           | default-testCompile   | testCompile
maven-surefire-plugin ---------------------------------------------------
    + test                   | default-test          | test
maven-jar-plugin --------------------------------------------------------
    + package                | default-jar           | jar
maven-assembly-plugin ---------------------------------------------------
    + package                | make-assembly         | single
maven-install-plugin ----------------------------------------------------
    + install                | default-install       | install
maven-deploy-plugin -----------------------------------------------------
    + deploy                 | default-deploy        | deploy

备注

默认情况下,目标搜索,如果用户调用mvn deploy,将运行任务。相如clean将不被包括在内。到包括在所述搜索多个阶段,使用buildplan.tasks属性:

> mvn fr.jcgay.maven.plugins:buildplan-maven-plugin:list -Dbuildplan.tasks=clean,deploy

一个工具,可以帮助是mvn help:effective-pom这将打印扩大所有变量和所有家长的POM聚甲醛。这有助于了解Maven的看到的东西。从这一点,这是很简单的找到所有的其他目标(通常是没有那么多)。

在更大的问题是隐式目标(即,当自动插件钩本身到生命周期的某些阶段)。有没有简单的方法来看到这些不实际运行的Maven。这应成为在Maven的3更好的在此之前,与-X将打印一大堆调试输出加上当前阶段和插件执行运行Maven。

如果不使用 Maven,而是使用 m2e,您可以使用可在 Eclipse 插件中使用的代码块来完成此操作:


final IMavenProjectRegistry projectRegistry = MavenPlugin.getMavenProjectRegistry();
    final IMavenProjectFacade facade = projectRegistry.getProject(project);
    projectRegistry.execute(facade, new ICallable<Void>() {
        public Void call(IMavenExecutionContext context, IProgressMonitor monitor) throws CoreException {
            MavenProject mavenProject = facade.getMavenProject(monitor);
            List<MojoExecution> mojoExecutions = ((MavenProjectFacade) facade).getMojoExecutions(monitor);
            LifecycleMappingResult mappingResult = LifecycleMappingFactory.calculateLifecycleMapping(
                    mavenProject, mojoExecutions, facade.getResolverConfiguration().getLifecycleMappingId(),
                    monitor);
            Map<MojoExecutionKey, List<IPluginExecutionMetadata>> mojoExecutionMapping = mappingResult
                    .getMojoExecutionMapping();

            Map<String, List<MojoExecutionKey>> phases = new LinkedHashMap<String, List<MojoExecutionKey>>();
            for (MojoExecutionKey execution : mojoExecutionMapping.keySet()) {
                List<MojoExecutionKey> executions = phases.get(execution.getLifecyclePhase());
                if (executions == null) {
                    executions = new ArrayList<MojoExecutionKey>();
                    phases.put(execution.getLifecyclePhase(), executions);

                    }
                    executions.add(execution);
                }

看看完整的 来源.

已经实施于:

http://marketplace.eclipse.org/content/phases-and-goals

它利用 m2e 的能力来计算目标与阶段的关联。我也在尝试在 Maven 级别解决它。

我把乍得的回答到一个脚本(所以我没有记住这是很长的插件名称)。把它放在你的〜/斌/文件夹,这样你可以在任何地方使用它。

#!/usr/bin/env bash
# Created based on https://stackoverflow.com/a/35610377/529256
debug=false

goal='list-phase'
build_plan='clean,deploy'
working_directories=""

for (( i=1; i<=$#; i++ )) do
    case ${!i} in

        -h|--help)
            programName=$( basename ${0} )
            echo "Lists the goals of mvn project(s) by phase in a table";
            echo
            echo "Usage:";
            echo "    ${programName} -d|--debug -g|--goal goal -b|--build_plan build_plan [*directory]";
            echo
            echo "           --goal  The goal for the buildplan-maven-plugin (default: $goal)"
            echo "                   (possible values: list, list-plugin, list-phase)"
            echo
            echo "     --build_plan  The value of the buildplan.tasks parameter (default: $build_plan)"
            echo "                   (examples: 'clean,install', 'deploy', 'install', etc...) "
            echo
            echo "     [*directory]  The directories (with pom.xml files) to run the command in"
            exit 0;
            ;;
        -d|--debug)
            debug=true;
            echo "debug = ${debug}";
            ;;
        -b|--build_plan)
            ((i++))
            build_plan="${!i}"
            ;;
        -g|--goal)
            ((i++))
            goal="${!i}"
            ;;
        *)
            working_directory="${!i}";
            if [ ! -e "${working_directory}" ]; then
                echo "'${working_directory}' doesn't exist";
                exit 1;
            fi;
            if [ -z "${working_directories}" ]; then
                working_directories="$working_directory"
            else
                working_directories="$working_directories ${!i}"
            fi;
            ;;
    esac;
done;

if [ -z "${working_directories}" ]; then
    working_directories="$PWD"
fi

if [ ${debug} = true ]; then
    echo "working_directories=$working_directories"
    echo "goal=$goal"
    echo "build_plan=$build_plan"
fi

for workingDirectory in ${working_directories}; do
    pushd ${workingDirectory} > /dev/null
    echo "cd $workingDirectory"
    echo "mvn fr.jcgay.maven.plugins:buildplan-maven-plugin:${goal} -Dbuildplan.tasks=${build_plan}"
    mvn fr.jcgay.maven.plugins:buildplan-maven-plugin:${goal} -Dbuildplan.tasks=${build_plan}
    popd > /dev/null
done;
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