Server Tomcat v9.0 Server at localhost failed to start.
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同构eclipse编写web项目,遇到tomcat无法启动。如下图:
百度各种原因,最后发现是因为servlet3.0后的版本出现了新增注释@WebvServlet功能,会在我们生成一个servlet类时自动增加@WebServlet,导致和配置web.xml产生冲突,tomcat无法启动。
解决办法:
1:删除servlet类的注释@WebServlet,在web.xml中编写配置,或者删除web.xml中的servlet配置文件。
2:Servlet 3.0 的部署描述文件 web.xml 的顶层标签 有一个 metadata-complete 属性,该属性指定当前的部署描述文件是否是完全的。如果设置为 true,则容器在部署时将只依赖部署描述文件,忽略所有的注解(同时也会跳过 web-fragment.xml 的扫描,亦即禁用可插性支持,具体请看后文关于 可插性支持的讲解);如果不配置该属性,或者将其设置为 false,则表示启用注解支持(和可插性支持)
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