如果我将mack-war-plugin配置为在缺少web.xml时失败，为什么缺少web.xml失败呢？ [英] Why is maven-war-plugin failing for web.xml missing if I configured it not to fail on missing web.xml?

问题描述

这是一个挑战：为什么这个版本失败了？

Here's a challenge: why is this build failing?

我已经配置了Maven的maven-war-plugin在一个绝对的web.xml文件中不会失败，似乎：

I have configured Maven's maven-war-plugin not to fail on an abscent web.xml file, it seems:

    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-war-plugin</artifactId>
        <executions>
            <execution>
                <id>prepare-war</id>
                <phase>prepare-package</phase>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                    <archiveClasses>false</archiveClasses>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix />
                        </manifest>
                        <manifestEntries>
                            <Implementation-Build>${build.number}</Implementation-Build>
                            <Implementation-Title>${project.name}</Implementation-Title>
                            <Built-By>${user.name}</Built-By>
                            <Built-OS>${os.name}</Built-OS>
                            <Build-Date>${build.date}</Build-Date>
                        </manifestEntries>
                    </archive>
                    <webResources>
                        <resource>
                            <!-- this is relative to the pom.xml directory -->
                            <directory>./target/dist</directory>
                        </resource>
                    </webResources>
                </configuration>
            </execution>
        </executions>
    </plugin>

但是尽管有这样的配置，它仍然会像这样失败：

But despite of this configuration it keeps failing like this:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.4:war (default-war) on project com.specktro.orchid.operations.portal.frontend: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]

我实际上没有web.xml，所以我需要它来组装没有它的战争。

I actually don't have the web.xml, so I need it to assemble the war without it.

我尝试在配置中添加一个伪造的< webXml> none< / webXml> ，但这并没有改变任何事情......

I tried adding a bogus <webXml>none</webXml> into the config, but that didn't change anything...

我缺少什么？

推荐答案

POM中的执行ID是 prepare-war 。 Maven为包装类型为 war 的项目运行自己的war插件默认执行。默认执行具有ID default-war 。由于当前配置了POM， war 目标正在运行两次。

The execution ID in the POM is prepare-war. Maven runs its own default execution of the war plugin for projects with packing type war. The default execution has ID default-war. As the POM is currently configured, the war goal is running twice.

如果查看错误消息：

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.4:war (default-war) on project com.specktro.orchid.operations.portal.frontend: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]

您可能会在括号中看到失败的执行ID（默认战）。如果您将执行ID更改为 default-war ，您的问题将会消失，并且您将不再执行两次战争目标的执行。

You may see the execution ID that fails in parenthesis (default-war). If you change the execution ID to default-war your problem will go away, AND you will no longer have two executions of the war goal running.

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