PMD找不到规则集 [英] PMD coulnd't find ruleset

问题描述

我正在创建一个基于maven的java项目，其中包含PMD maven插件。我使用自己的规则集XML，它就像一个魅力，除了两个规则集：空码和不必要：当我运行构建时，maven说：找不到资源。角色定义如下所示：

I'm on creating a maven based java project, which contains the PMD maven plugin. I use my own rule set XML and it works like a charm, except two rule sets: the emptycode and the unnecessary: when I run the build, maven says: "can't find resource". The role definitions look like:

<role ref="rulesets/emptycode" />

和

<role ref="rulesets/unnecessary" />

在其他所有情况下，这种定义都有效。我发现的是：在 ecmasrcipt 类别下有一个名为不必要的规则集，所以这个定义可能需要一些使用java版本的建议。我尝试了多次思考，比如将 language 属性设置为规则集 xml节点（JAVA，基于PMD JavaDoc），以及 ref <中的一些前置后缀/ em>，但它不起作用，我在网上找不到可行的解决方案。有人有想法，我忘记了什么，或者我失败了什么？感谢您的帮助！

In every other cases, this kind of definition works. What I found out is that: there is a rule set with the name "unnecessary" under ecmasrcipt category, so maybe this definition needs some suggestion to use java version. I tried multiple thinks, like set language attribute to the ruleset xml node ("JAVA", based on PMD JavaDoc), and some pre-postfix in ref, but it doesn't work and I found no working solution over the web. Does someone has an idea, what I forgot to set, or what I fail? Thanks for any help!

推荐答案

PMD似乎是一个可以从Maven中使用的狡猾的野兽。我刚刚用插件的3.0版来解决这个问题 - 有两个解决方案：

PMD seems to be a fiddly beastie to use from Maven. I've just figured this out with version 3.0 of the plugin - there are two solutions:

• 快速 - 和脏解决方案：在你的项目中放置规则集：

• The quick-and-dirty solution: put rulesets in your project:

• 下载PMD jar（ http://sourceforge.net/projects/pmd/files/latest/download ）


• extract lib / pmd-xxxjar


• 从该PMD jar文件中提取规则集/< type> /< ruleset> .xml 您要使用的文件


• 将它们放在项目下的文件夹中 - 类似 $ {basedir} / pmd /...



• 引用它们如下：

• download the PMD jar (http://sourceforge.net/projects/pmd/files/latest/download)
• extract lib/pmd-x.x.x.jar
• extract from that PMD jar file the rulesets/<type>/<ruleset>.xml files you want to use
• place them in a folder under your project - something like ${basedir}/pmd/...

• reference them as follows:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-pmd-plugin</artifactId>
    <configuration>
        <rulesets>
            <ruleset>${basedir}/pmd/<ruleset>.xml</ruleset>
        </rulesets>
    </configuration>
</plugin>

优点是这很容易，缺点是如果你将来更新PMD版本你会需要记住更新这些文件。

The advantage is this is easy, the disadvantage is if you update the PMD version in future you'll need to remember to update these files.

好的解决方案：参考 pmd-xxxjar 中的规则集。

The nice solution: reference rulesets in pmd-x.x.x.jar.

• 创建自定义规则集，例如： $ {basedir} /pmd/custom.xml （参见 http://pmd.sourceforge.net/pmd-5.0。 2 / howtomakearuleset.html ）


• 以下列方式引用PMD规则集：< rule ref =rulesets / java / imports.xml />


• NB：路径是 pmd-xxxjar （请参见上面的快速而肮脏）没有前导斜杠



• 引用您的自定义规则集，如下所示：

• create a custom ruleset such as: ${basedir}/pmd/custom.xml (see http://pmd.sourceforge.net/pmd-5.0.2/howtomakearuleset.html)
• reference the PMD rulesets in the following way: <rule ref="rulesets/java/imports.xml"/>
• NB: the path is the path inside pmd-x.x.x.jar (see quick-and-dirty above) with no leading slash

• reference your custom ruleset as follows:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-pmd-plugin</artifactId>
    <configuration>
        <rulesets>
            <ruleset>${basedir}/pmd/custom.xml</ruleset>
        </rulesets>
    </configuration>
</plugin>

优点是它总是会引用PMD jar中的当前PMD规则集，缺点是它是一个为了得到正确的一点点。

The advantage is this will always reference the current PMD rulesets from the PMD jar, the disadvantage is it's a bit fiddly to get right.

试验这个直到它工作（ maven-pmd-plugin 3.0版）我一直在运行mvn pmd：pmd（< linkXref> false< / linkXref> in pom.xml ）并调整路径，直到我停止收到错误。

To experiment with this until it was working (maven-pmd-plugin version 3.0) I kept running mvn pmd:pmd (<linkXref>false</linkXref> in pom.xml) and tweaked the paths until I stopped getting errors.

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