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Converting a Java project to a Dynamic Web project in Eclipse (通过Project Facets)

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Converting a Java project to a Dynamic Web project in Eclipse (基于WTP,通过Project Facets)

What's WTP?
http://www.eclipse.org/projects/project_summary.php?projectid=webtools
引用
The Eclipse Web Tools Platform (WTP) project extends the Eclipse platform with tools for developing Web and Java EE applications. It includes source and graphical editors for a variety of languages, wizards and built-in applications to simplify development, and tools and APIs to support deploying, running, and testing apps.


Converting a Java project to a Dynamic Web project in Eclipse:
http://greatwebguy.com/programming/eclipse/converting-a-java-project-to-a-dynamic-web-project-in-eclipse/

Eclipse – Project Facets:
http://www.beilers.com/2009/05/eclipse-project-facets/



Maven(m2eclipse插件) + WTP + tomcat:
如果是使用m2eclipse导入的maven项目,则你如果觉得手动往local tomcat - webapps里扔war包的过程太麻烦,想在eclipse中的tomcat上做开发部署,肯定是需要为该web项目添加wtp支持的。除了按上面的步骤为该web项目添加project facets外,还需要注意要将该web项目的Maven Dependencies也添加到 部署/发布 路径里去,具体做法:
右键web项目 -> Properties -> Deployment Assembly -> Add -> Java Build Path Entries -> 点选Maven Dependencies并确定。
另外,如果该web项目的Maven Dependencies中有对其他项目的依赖,比如,多个maven modules的情况下,则需要将这几个依赖的项目也添加进去,跟上面的步骤基本相同:
右键web项目 -> Properties -> Deployment Assembly -> Add -> Project -> 点选依赖的项目并确定。
参考资料:
Maven, Eclipse and Tomcat:
http://vijaypm.blogspot.com/2010/12/maven-eclipse-and-tomcat.html
Tomcat & Spring Web - Class Not Found Exception org.springframework.web.context.ContextLoaderListener:
http://stackoverflow.com/questions/6322711/tomcat-spring-web-class-not-found-exception-org-springframework-web-context
Maven project in eclipse - deployment assembly fails build(Invalid classpath publish export Project entries not supported):
http://stackoverflow.com/questions/6799135/maven-project-in-eclipse-deployment-assembly-fails-build






将MyEclipse项目导入到Eclipse中:
http://todaydiy.blog.163.com/blog/static/104189687201021035312604/
引用
1.请首先确保你的eclipse是javaee版本的,或者已经安装看wtp插件
2.然后修改eclipse工程下的.project文件:
<!--在 <natures></natures>中加入-->
    <nature>org.eclipse.wst.common.project.facet.core.nature</nature>
    <nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
    <nature>org.eclipse.jem.workbench.JavaEMFNature</nature>

<!--在 <buildSpec></buildSpec>中加入-->
     <buildCommand>
        <name>org.eclipse.wst.common.project.facet.core.builder</name>
        <arguments>
        </arguments>
    </buildCommand>
    <buildCommand>
        <name>org.eclipse.wst.validation.validationbuilder</name>
        <arguments>
        </arguments>
    </buildCommand>

3.刷新项目,项目->右击->Properties->Project Facets->Modify Project,选择Java和Dynamic Web Module
          配置Context Root 和Content Directory 以及源码路径。




A Error:
引用
Java compiler level does not match the version of the installed Java project facet
解决:
http://www.eclipsezone.com/eclipse/forums/t80428.html
引用
A wtp project is composed of multiple units of functionality (known as facets).
Take a look at Project Properties -> Project Facets panel. The java facet version needs to always match the java compiler compliance level.
The best way to change java level is to use the Project Facets properties panel as that will update both places at the same time
Alternatively, when you get the error that you are referring to, there are quick fixes available to resolve it.
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