Element web-app must be declared intellij error (java,springmvc,maven)

Question

这是我的 web.xml 文件，必须声明获取元素 web-app 错误

<web-app id="WebApp_ID" version="2.5"
    xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd">

    <display-name>SpringMVC 3.2 + Google Chart</display-name>

    <servlet>
        <servlet-name>frontController</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>WEB-INF/applnConfig.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>frontController</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

Answer 1

您正在使用位于 javaee 命名空间 (http://java.sun.com/xml/ns/javaee). But You have given J2ee namespace instead (http://java.sun.com/xml/ns/j2ee) 中的部署描述符模式 (web-app_2_5.xsd) 2.5 版。

尝试使用 Java EE 7 命名空间：

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
     version="3.1">
</web-app>

Element web-app must be declared intellij error (java,springmvc,maven)

Element web-app must be declared error in intellij (java,springmvc,maven)

java

web.xml

maven