Maven依赖关系在WEB-INF / lib中不可见 [英] Maven dependencies not visible in WEB-INF/lib

问题描述

我有这个奇怪的问题使我的项目基于Maven。我在Eclipse中创建了一个新的 Maven 项目，并启用了动态Web面。但是在运行时，它会抛出 ClassNotFoundException ，因为Maven依赖不会被复制到 WEB-INF / lib 目录。我甚至尝试在POM中添加副本依赖项部分，但没有帮助。

有人这里似乎已经解决了这个正确的方法，但我猜他忘了提及解决方案::（

解决方案

这应该与eclipse和m2eclipse无关，并且可以更好地支持 - m2e-wtp 另外，你不需要复制依赖关系原因：

• 您应该调用 mvn package （或右键单击> maven>包），并获得一个战争文件 - < packaging> （在pom中）必须是 war


• 您的依赖关系应与默认范围（如果它们是提供或测试不会包含在档案中）


• 如果你是将项目作为动态Web项目运行在eclipse中的服务器上，然后打开项目属性（右键单击>属性），然后选择部署程序集。点击添加，选择构建路径条目，并选择maven依赖关系。这将指示WTP将maven依赖关系发送到服务器目录。

I'm having this weird problem making my project Maven-based. I created a new Maven project in Eclipse and enabled the Dynamic Web facets. But during runtime now it throws ClassNotFoundException because the Maven dependencies are not copied to WEB-INF/lib directory. I even tried adding the copy-dependencies section in POM, but it didn't help.

Someone here seemed to have solved this the right way, but I guess he forgot to mention the solution ::(

解决方案

This should have nothing to do with eclipse and m2eclipse, and optionally for better support - m2e-wtp. Also, you don't need copy-dependencies. Here are a few possible reasons:

• you should invoke mvn package (or right-click > maven > package) and obtain a war file - the <packaging> (in the pom) must be war
• your dependencies should be with the default scope (if they are provided or test they will not be included in the archive)
• if you are running the project as dynamic web project on a server within eclipse, then you should open the project properties (right click > properties) and select "Deployment Assembly". There click "add", select "build path entries", and choose "maven dependencies". This will instruct WTP to send the maven dependencies to the server dir.

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