jacoco的prepare-agent不生成jacoco.exec文件 [英] jacoco's prepare-agent not generating jacoco.exec file

问题描述

我正在运行Jacoco的Maven插件. prepare-agent目标运行良好，但由于某种原因未生成jacoco.exec文件.随后report目标抱怨Skipping JaCoCo execution due to missing execution data file.

I am running Jacoco's Maven plugin. The prepare-agent goal runs fine, but does not generate jacoco.exec file for some reason. Subsequently the report goal complains Skipping JaCoCo execution due to missing execution data file.

有什么想法吗?

推荐答案

已阅读 https://groups.google.com/forum/#!topic/jacoco/LzmCezW8VKA ，事实证明prepare-agent设置了一个名为argLine的surefire属性.如果您覆盖此属性( https://issues.apache.org/jira/browse /SUREFIRE-951 鼓励您这样做)，那么jacoco永远不会停止运行.

Having read https://groups.google.com/forum/#!topic/jacoco/LzmCezW8VKA, it turns out that prepare-agent sets a surefire property called argLine. If you override this property (something that https://issues.apache.org/jira/browse/SUREFIRE-951 encourages you to do) then jacoco never ends up running.

解决方案是替换:

<argLine>-Dfile.encoding=${project.build.sourceEncoding}</argLine>

使用

<argLine>-Dfile.encoding=${project.build.sourceEncoding} ${argLine}</argLine>

意思是，将jacoco的argLine附加到新值.

Meaning, append jacoco's argLine to the new value.

更新:如 Fodder 所述，如果您并非总是运行JaCoCo并且没有其他插件集${argLine}，那么Maven将抱怨${argLine}未定义.要解决此问题，只需定义跳过JaCoCo时${argLine}的外观:

UPDATE: As pointed out by Fodder, if you aren't always running JaCoCo and no other plugin sets ${argLine} then Maven will complain that ${argLine} is undefined. To resolve this, simply define what ${argLine} should look like when JaCoCo is skipped:

<properties>
    <argLine/>
</properties>

在这种情况下，请使用@ {argLine}代替$ {argLine}，如此处所述.

In this case use @{argLine} instead of ${argLine} as explained here.

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