Eclipse构建路径嵌套错误 [英] Eclipse Build Path Nesting Errors

问题描述

我正在为我的课程开发一个简单的JSP / Servlet / Tomcat webapp。教授要求我们使用与默认动态Web项目结构略有不同的文件夹结构。而不是使用webcontent文件夹，他希望在src / main / java和src / main / webapp下的所有源代码。

当我运行应用程序时，我的欢迎文件显示好的，但是当我尝试访问我的servlet时，我得到：

  Http 500 SEVERE：为servlet分配异常InitDb 
  

java.lang.ClassNotFoundException。我很确定这是一个构建路径错误。我在构建路径上有最终/ src，但是我收到警告

 无法嵌套'final / src / main / webapp / WEB-INF / classes'在'final / src'里面启用嵌套从'final / src'中排除'main /'
  

我在我的部署程序集中有：

 < wb-resource deploy-path =/source-path =/ src / main / webapptag =defaultRootSource/> 
  

当我排除主/ /这个警告消失了，但是它并没有解决这个问题，感谢任何建议，谢谢。

解决方案

即使我创建了一个新的项目，同样的问题
我正在Eclipse中创建Java项目，然后进行mavenize，然后进入java构建路径属性删除 src / 并添加 src / main / java 和 src / test / java 。当我运行Maven更新时，它用于给出嵌套的路径错误。

然后我终于意识到 - 因为我没有看到这个条目 - 在pom文件中有一个< sourceDirectory> src< / sourceDirectory> 写我的时候，删除后解决。

I'm working on a simple JSP/Servlet/Tomcat webapp for my class. The professor asked us to use a folder structure that is slightly different than the default dynamic web project structure. Rather than using the webcontent folder he wants all of our source code under src/main/java and src/main/webapp.

When I run the app my welcome file displays fine, but when I try to access my servlets I get:

 Http 500 SEVERE: Allocate exception for servlet InitDb

java.lang.ClassNotFoundException. I'm pretty sure it's a build path error. I have final/src on the build path but I am receiving the warning

"Cannot nest 'final/src/main/webapp/WEB-INF/classes' inside 'final/src'. To enable the    nesting exclude 'main/' from 'final/src'

I have this in my deployment assembly:

<wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/> 

When I exclude main/ the warning goes away, but it doesn't fix the problem. I would appreciate any advice. Thanks.

解决方案

I had the same problem even when I created a fresh project. I was creating the Java project within Eclipse, then mavenize it, then going into java build path properties removing src/ and adding src/main/java and src/test/java. When I run Maven update it used to give nested path error.
Then I finally realized -because I had not seen that entry before- there is a <sourceDirectory>src</sourceDirectory> line in pom file written when I mavenize it. It was resolved after removing it.

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