Maven搭建Spring+Struts2+Mybatis项目（二） web.xml设置

<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">  <display-name>NCEE System</display-name>  <welcome-file-list>  <welcome-file>welcome.jsp</welcome-file>  </welcome-file-list>    <!-- Struts2 -->  <filter>  <filter-name>struts2</filter-name>  <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>  <init-param>  <param-name>config</param-name>  <param-value>struts-default.xml,struts-pulgin.xml,classpath:struts.xml</param-value>  </init-param>  </filter>  <filter-mapping>  <filter-name>struts2</filter-name>  <url-pattern>/*</url-pattern>  </filter-mapping>    <!-- Spring -->  <context-param>    <description>Spring Context</description>    <param-name>contextConfigLocation</param-name>    <param-value>classpath:applicationContext.xml</param-value>  </context-param>  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener></web-app>

一， XML文件头解释

1.1 XML相关知识

XSD: XML Schema Definition

DTD: Document Type Definition

XSD与DTD用与校验文件格式，XSD比DTD更强大用于替代DTD。

语法格式：

xmlns:namespace-prefix:"namespaceURI"

xmlns: XML Namespace

xmlns:xsi: XMLSchema Instance

xsi:schemaLocation

1.2 Eclipse中常见异常： Can not change  version of project facet Dynamic Web Module to version 2.3

Eclipse->Windown->show view->navigator

左栏project explore旁边会出现一个navigator, 根目录下找到.settings\org.eclipse.wst.common.project.facet.core.xml

<?xml version="1.0" encoding="UTF-8"?><faceted-project>  <fixed facet="wst.jsdt.web"/>  <installed facet="jst.web" version="3.1"/> <!-- set the version of project facet -->  <installed facet="wst.jsdt.web" version="1.0"/>  <installed facet="java" version="1.8"/> <!-- set the version of JDK --></faceted-project>

二， Struts2部分解释

三， Spring部分解释