如何调试 Maven 插件？

Question

我使用在我的 POM 中配置的 allure-maven 插件。但是，当

失败时

ru.yandex.qatools.allure.data.ReportGenerationException: Could not find any allure results

我想在运行时调试插件，看看它是否正确设置了所有变量。

我已尝试根据 Debugging in Maven? 的答案使用 mvnDebug。当 Maven 使用 surefire 插件执行测试时，我能够将调试器连接到 JVM。但是，当 Maven 尝试使用 allure 插件生成 Allure 报告时，我无法连接调试器。 Allure 插件在 POM 的 "reporting" 部分定义，并由 "site" Maven 目标使用。

这是我用 mvn clean test site 命令调用的 POM（几乎完成，我省略了依赖项部分）。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns="http://maven.apache.org/POM/4.0.0"
             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>

    ...  

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <version>2.20</version>
                <configuration>
                    <testFailureIgnore>true</testFailureIgnore>
                    <argLine>-Xmx2048m -XX:-UseSplitVerifier -XX:MaxPermSize=256m
                        -javaagent:${settings.localRepository}/org/aspectj/aspectjweaver/${aspectj.version}/aspectjweaver-${aspectj.version}.jar
                    </argLine>
                    <properties>
                        <property>
                            <name>parallel</name>
                            <value>classes</value>
                        </property>
                        <property>
                            <name>threadcount</name>
                            <value>4</value>
                        </property>
                    </properties>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.aspectj</groupId>
                        <artifactId>aspectjweaver</artifactId>
                        <version>${aspectj.version}</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>


    <reporting>
        <excludeDefaults>true</excludeDefaults>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-report-plugin</artifactId>
                <version>2.19.1</version>
            </plugin>
            <plugin>
                <groupId>io.qameta.allure</groupId>
                <artifactId>allure-maven</artifactId>
                <version>2.8</version>
                <configuration>
                </configuration>
            </plugin>
        </plugins>
    </reporting>

    <pluginRepositories>
        <pluginRepository>
            <id>mvn-nexus-all</id>
            <url>https://lunabuild.akamai.com/nexus/content/groups/public/</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>
</project>

下面是失败插件的完整堆栈跟踪：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.3:site (default-site) on project sso-config-tests: Error during page generation: Error rendering Maven report: Could not generate the report: InvocationTargetException: Could not find any allure results -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-site-plugin:3.3:site (default-site) on project sso-config-tests: Error during page generation
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
        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:862)
        at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
        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:497)
        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.MojoExecutionException: Error during page generation
        at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:143)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
        ... 20 more
Caused by: org.apache.maven.doxia.siterenderer.RendererException: Error rendering Maven report: Could not generate the report
        at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:233)
        at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:319)
        at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:135)
        at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:175)
        at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:138)
        ... 22 more
Caused by: org.apache.maven.reporting.MavenReportException: Could not generate the report
        at ru.yandex.qatools.allure.report.AllureGenerateMojo.executeReport(AllureGenerateMojo.java:127)
        at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:255)
        at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:219)
        ... 26 more
Caused by: java.lang.reflect.InvocationTargetException
        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:497)
        at ru.yandex.qatools.allure.report.AllureGenerateMojo.executeReport(AllureGenerateMojo.java:123)
        ... 28 more
Caused by: ru.yandex.qatools.allure.data.ReportGenerationException: Could not find any allure results
        at ru.yandex.qatools.allure.data.AllureReportGenerator.generate(AllureReportGenerator.java:58)
        at ru.yandex.qatools.allure.data.AllureReportGenerator.generate(AllureReportGenerator.java:53)
        at ru.yandex.qatools.allure.AllureMain.main(AllureMain.java:48)
        ... 33 more

Answer 1

如果您使用 mvnDebug clean install 而不是 mvn clean install 开始构建，Maven 将等待远程调试器连接到端口 8000。这应该适用于所有在他们自己的 JVM 中不运行的插件。

这需要 Maven 大于 2.0.8，我假设你是运行ning。

见Debugging in Maven?

Answer 2

而不是 allure-maven 插件调试，您可能想先修复配置问题。您将插件放入了错误的 pom 部分。看官方插件的docs.

Allure 2 不再使用 reporting 部分。您应该将插件放入 build 部分。

报告生成命令也已更新。您应该使用以下内容而不是 site 目标调用：

mvn allure:report
mvn allure:serve

查看 this 示例以了解有效配置。

Answer 3

如果你想从 Intellij IDEA 调试它。我假设你运行捆绑了 mvn，JDK9+

转到 IDEA 中的 Maven 运行ner 设置。
在 VM 选项中指定此行：-agentlib:jdwp=transport=dt_socket,address=5005,server=y,suspend=y

Maven 不会在您连接到远程调试器。

创建远程调试器配置（指定端口 5005）。
运行远程调试器（不要忘记在代码中添加断点）。

如何调试 Maven 插件？

How to debug Maven plugin?

maven

maven-plugin

allure