Cannot change version of project facet Dynamic Web Module to 2.4问题解决 梦里梦外; 2021-11-09 07:36 252阅读 0赞 # 问题现象: # eclipse中,有个maven web项目,报错:Cannot change version of project facet Dynamic Web Module to 2.4,截图如下: ![1097754-20171020163647021-1203283902.png][] # 期望: # 期望此maven web项目为 web 2.5,而非2.4 # 解决步骤: # ## 1,更改setting目录下的配置。 ## 点击小三角,再点击Filters: ![1097754-20171020164236177-2079550738.png][] 去掉勾选 .\* resources ,点击OK按钮: ![1097754-20171020164340162-1546760082.png][] 项目根目录下出现setting目录: ![1097754-20171020164438990-59370263.png][] 修改org.eclipse.wst.common.project.facet.core.xml,将jst.web一项从2.4改为2.5: ![1097754-20171020164516443-1270210078.png][] ## 2,修改项目的facets ## 项目右键 -> Properties -> Project Facets,把Dynamic Web Module 一项修改为2.5: ![1097754-20171020165920271-781098893.png][] ## 3,修改\\WEB-INF\\web.xml ## 修改两个地方,都改成2.5版本,修改如下: ![1097754-20171020164744052-1104939996.png][] 如果需要修改成3.0版本的,这样写: 1 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> ## 4,执行project clean ## ![1097754-20171020164929834-2072245974.png][] ## 5,执行maven update ## 项目右键 -> Maven -> Update Projects **问题修复成功。** 转载于:https://www.cnblogs.com/yachao1120/p/10809296.html [1097754-20171020163647021-1203283902.png]: /images/20211109/5de2c983aea549a6bf4dffc150a9a163.png [1097754-20171020164236177-2079550738.png]: /images/20211109/708f8aae09b047ce8cc314f77c6d3ef7.png [1097754-20171020164340162-1546760082.png]: /images/20211109/f289017d34b1434992f8b28f8d9fa5c1.png [1097754-20171020164438990-59370263.png]: /images/20211109/943d5391bc194d2ba016485159e27e58.png [1097754-20171020164516443-1270210078.png]: /images/20211109/0f5e51e472ab4dae9ddf2aa4d6ffffa6.png [1097754-20171020165920271-781098893.png]: /images/20211109/054e98a6b9c145afa2589489472cf3f4.png [1097754-20171020164744052-1104939996.png]: /images/20211109/77aba99399ac4534a366bedf6e3f4c39.png [1097754-20171020164929834-2072245974.png]: /images/20211109/3931b52d131947e89e9629a6c7ca4d58.png
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