基础框架 SpringMVC配置文件web.xml中的web-app中配置信息顺序详解

女爷i 2023-01-01 13:54 104阅读 0赞

## 基础框架 SpringMVC配置文件web.xml中的web-app中配置信息顺序详解 ##

### 1. web.xml中的web-app中配置顺序 ###

web-app配置顺序异常，这个不影响，也可以调整顺序按照F4进入dtd文件。  
web.xml中的web-app中配置信息是有顺序了，按照web-app\_2\_3.dtd规范定义好的顺序。

### 2. 异常提示 ###

The content of element type “web-app” must match “(icon?,display-
    name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-
    mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-
    ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-ref*)”.
    
    No grammar constraints (DTD or XML schema) detected for the document.

### 3. 查看方式 ###

选中< web-app > ，F4进入web-app\_2\_3.dtd。环境是08版idea。  
具体配置顺序如下打开内容，dtd文件详细叙述了每个节点，及配置顺序，由于文件太大就不一一列举。  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L20wXzM3NTgzNjU1_size_16_color_FFFFFF_t_70]

<!ELEMENT web-app ( icon?, display-name?, description?, distributable?, context-param*, filter*, filter-mapping*, listener*, servlet*, servlet-mapping*, session-config?, mime-mapping*, welcome-file-list?,error-page*, taglib*, resource-env-ref*, resource-ref*, security-constraint*, login-config?, security-role*, env-entry*, ejb-ref*, ejb-local-ref* ) >

### 3. 更改后配置 ###

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" >
    
    <web-app>
        <display-name>Archetype Created Web Application</display-name>
    
        
        <context-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext.xml</param-value>
        </context-param>
    
        
        <filter>
            <filter-name>characterEncodingFilter</filter-name>
            <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
            <init-param>
                <param-name>encoding</param-name>
                <param-value>UTF-8</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>characterEncodingFilter</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    
        
        <listener>
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
        </listener>
    
        
        <servlet>
            <servlet-name>dispatcherServlet</servlet-name>
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
            <init-param>
                <param-name>contextConfigLocation</param-name>
                <param-value>classpath:springmvc.xml</param-value>
            </init-param>
            <load-on-startup>1</load-on-startup>
        </servlet>
        <servlet-mapping>
            <servlet-name>dispatcherServlet</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
    </web-app>

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