我正在尝试使用YUI Compressor插件为maven压缩我的CSS和JavaScript，但我遇到了两个问题。
我的配置正确压缩和聚合JavaScript文件，但如果我运行mvn package制作war文件，maven会在复制src/main/webapp文件夹之前压缩JavaScript文件。这会覆盖所有压缩的css和JavaScript文件。我该如何解决这个问题？
如何让tomcat maven插件使用压缩的JavaScript文件而不是src/main/webapp/scripts文件夹中的文件？当我的应用程序尝试阅读all.js时，它失败了，因为它位于target/目录中而不在我的src/main/webapps文件夹中。
<!-- Tomcat -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>tomcat-maven-plugin</artifactId>
<version>1.1</version>
<configuration>
<warFile>target/myapp-1.0.war</warFile>
</configuration>
</plugin>
<!-- YUI Compressor -->
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<excludes>
<exclude>**/jwplayer.js</exclude>
<exclude>**/audio-player-noswfobject.js</exclude>
<exclude>**/audio-player-uncompressed.js</exclude>
<exclude>**/audio-player.js</exclude>
<exclude>**/jscharts.js</exclude>
<exclude>**/jquery-ui-1.8.16.custom.min.js</exclude>
</excludes>
<nosuffix>true</nosuffix>
<jswarn>false</jswarn>
<force>false</force>
<aggregations>
<aggregation>
<removeIncluded>false</removeIncluded>
<insertNewLine>true</insertNewLine>
<output>${project.build.directory}/${project.build.finalName}/scripts/all.js</output>
<includes>
<include>**/json/json2.js</include>
<include>**/jwplayer/jwplayer.js</include>
<include>**/font/font.js</include>
<include>**/underscore/underscore.js</include>
<include>**/jquery/jquery-1.7.1.js</include>
<include>**/jquery/jquery-ui-1.8.16.custom.min.js</include>
<include>**/jquery/jquery.cookie.js</include>
<include>**/jquery/jquery.fancybox.js</include>
<include>**/jquery/jquery.highlight.js</include>
<include>**/jquery/jquery.jcrop.js</include>
<include>**/jquery/jquery.tmpl.js</include>
<include>**/jquery/farbtastic.js</include>
<include>**/jscharts/jscharts.js</include>
<include>**/myapp/homepage.js</include>
</includes>
</aggregation>
</aggregations>
</configuration>
</plugin>
或者我只是以错误的方式实现我的目标？
这是包装战争时的maven输出。您可以看到即使我在预包装阶段告诉yui:compress目标，它仍然在复制资源之前发生，因为这发生在package阶段：
[INFO] ------------------------------------------------------------------------
[INFO] Building My App 1.0
[INFO] ------------------------------------------------------------------------
Downloading: http://repo1.maven.org/maven2/net/alchim31/maven/yuicompressor-maven-plugin/maven-metadata.xml
Downloading: http://snapshots.repository.codehaus.org/net/alchim31/maven/yuicompressor-maven-plugin/maven-metadata.xml
Downloading: http://download.java.net/maven/2/net/alchim31/maven/yuicompressor-maven-plugin/maven-metadata.xml
Downloading: http://oss.sonatype.org/content/groups/public/net/alchim31/maven/yuicompressor-maven-plugin/maven-metadata.xml
Downloaded: http://oss.sonatype.org/content/groups/public/net/alchim31/maven/yuicompressor-maven-plugin/maven-metadata.xml (442 B at 2.1 KB/sec)
Downloaded: http://repo1.maven.org/maven2/net/alchim31/maven/yuicompressor-maven-plugin/maven-metadata.xml (403 B at 0.9 KB/sec)
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ myapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 26 resources
[INFO] Copying 4 resources
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ myapp ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default) @ myapp ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- aspectj-maven-plugin:1.3:compile (default) @ myapp ---
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:testResources (default-testResources) @ myapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 11 resources
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:testCompile (default-testCompile) @ myapp ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] --- aspectj-maven-plugin:1.3:test-compile (default) @ myapp ---
[INFO] No modifications found skipping aspectJ compile
[INFO]
[INFO] --- maven-surefire-plugin:2.6:test (default-test) @ myapp ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- yuicompressor-maven-plugin:1.2:compress (default) @ myapp ---
[INFO] 960.css (9989b) -> 960.css (5897b)[59%]
[INFO] base.css (24210b) -> base.css (16437b)[67%]
[INFO] reset.css (2062b) -> reset.css (1096b)[53%]
[INFO] text.css (1270b) -> text.css (598b)[47%]
[INFO] tinymce.css (1994b) -> tinymce.css (1277b)[64%]
[INFO] jquery.fancybox-1.3.4.css (8852b) -> jquery.fancybox-1.3.4.css (6975b)[78%]
[INFO] farbtastic.css (1362b) -> farbtastic.css (478b)[35%]
[INFO] jquery.jcrop.css (748b) -> jquery.jcrop.css (582b)[77%]
[INFO] base.css (34567b) -> base.css (25034b)[72%]
[INFO] jquery-ui-1.8.11.custom.css (33994b) -> jquery-ui-1.8.11.custom.css (25351b)[74%]
.... (tons of javascript files)
[INFO] why.js (515b) -> why.js (354b)[68%]
[INFO] underscore.js (26960b) -> underscore.js (9472b)[35%]
[INFO] total input (1832512b) -> output (1198425b)[65%]
[INFO] generate aggregation : C:\Users\egervari\IdeaProjects\myapp-development\target\myapp-1.0\scripts\all.js
[INFO] all.js (564342b)
[INFO] nb warnings: 0, nb errors: 0
[INFO]
[INFO] --- maven-war-plugin:2.1.1:war (default-war) @ myapp ---
[INFO] Packaging webapp
[INFO] Assembling webapp [myapp] in [C:\Users\egervari\IdeaProjects\myapp-development\target\myapp-1.0]
[INFO] Processing war project
[INFO] Copying webapp resources [C:\Users\egervari\IdeaProjects\myapp-development\src\main\webapp]
即使更改阶段确实有效，我也必须在tomcat:run之前运行此压缩。
maven对你认为的工作来说是错误的工具吗？或者是maven / java只是没有重视javascript开发的鼻烟？为什么这么难？
答案 0 :(得分：4)
我遇到了类似的问题，我将阶段改为打包。希望这也有助于其他人。
这很棘手。这与nosuffix配置选项有关。如果删除nosuffix选项，则缩小按预期工作。
如果你真的必须有nosuffix，那么你需要将执行阶段改为“package”。
<executions>
<execution>
<phase>package</phase>
<goals>
......
.....
在准备资源之前的任何阶段都不起作用，因为在构建战争时，它从原始源位置获取js，从而覆盖目标目录中的缩小的js（在准备资源阶段创建）。
当你删除nosuffix时缩小效果，因为在打包阶段，文件名不同，所以没有文件的覆盖，你会看到目标目录中的缩小和非缩小的js文件。
答案 1 :(得分：1)
要解决这个问题，你可以尝试一下。
（1）将您的个人编码javascript放在src / main / js中，而不是src / main / webapp中。使用mvn约定进行JS放置。 *注意：对于您包含的库，例如jQuery或其他什么，你可以将它们转储到src / main / webapp中，这很好。这些已经最小化了你永远不会修改的javascript。
（2）调整你的YUI插件，以（a）忽略你没有编码的javascript，（b）将压缩的javascript编译成输出文件夹。
<plugin>
<groupId>net.alchim31.maven</groupId>
<artifactId>yuicompressor-maven-plugin</artifactId>
<version>1.5.1</version>
<executions>
<execution>
<goals>
<goal>compress</goal>
</goals>
</execution>
</executions>
<configuration>
<nosuffix>true</nosuffix>
<excludes>
<exclude>**/ui-framework/**</exclude>
</excludes>
<outputDirectory>${yui.outputdir}</outputDirectory>
</configuration>
</plugin>
因此，我们可以进行以下练习。
mvn process-resources
└── target
├── classes
│ ├── default.logback.xml
│ └── props
│ ├── default.props
│ └── production.default.props
├── packageLinkDefs.properties
└── yui-compressed
└── jasmineDummyExample_element_mover.js
这里的重点是YUI正在将压缩的javascript编译为自己的输出文件夹，而war插件并不知道它。
（3）最后你只需要调整你的war插件来复制yui编译的源代码。
只要你遵循maven的javascript约定，你的javascript应该在src / main / js /下编码，你的war插件默认不会复制你的javascipt（听起来很奇怪吧？）。
默认情况下，您的war插件将复制src / main / webapp下的所有静态资源。 这很方便，因为它允许您指示war插件保持将src / main / webapp复制到最终war文件的默认行为，此外，还要复制/ src / target / yui-compressed文件夹。这样，两个文件夹中都没有重叠文件，输出目录中没有文件覆盖。
以下代码段中说明了这一点：
$ mvn war:war
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building lift-someproject Project 1.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-war-plugin:2.5:war (default-cli) @ lift-someproject ---
[INFO] Packaging webapp
[INFO] Assembling webapp [lift-someproject] in [D:\scalaWorkspace\liftsomeprojectTwo\lift-someproject\target\lift-someproject]
[INFO] Processing war project
[INFO] Copying webapp webResources [D:\scalaWorkspace\liftsomeprojectTwo\lift-someproject\target\yui-compressed] to [D:\scalaWorkspace\liftsomeprojectTwo\lift-someproject\target\lift-someproject]
[INFO] Copying webapp resources [D:\scalaWorkspace\liftsomeprojectTwo\lift-someproject\src\main\webapp]
[INFO] Webapp assembled in [820 msecs]
[INFO] Building war: D:\scalaWorkspace\liftsomeprojectTwo\lift-someproject\target\lift-someproject.war
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12.968s
[INFO] Finished at: Tue Dec 23 20:17:59 CET 2014
[INFO] Final Memory: 11M/246M
[INFO] ------------------------------------------------------------------------
您可以使用未压缩的yui压缩JS文件调整war文件以了解特殊文件夹：
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.5</version>
<configuration>
<webResources>
<resource>
<directory>${yui.outputdir}</directory>
<targetPath>js</targetPath>
</resource>
</webResources>
</configuration>
</plugin>
如果你使用Jetty进行快速开发，你需要对该插件进行一些进一步的修改，以确保它在src / main / js中找到你手工编写的javascript。
这应该有效。