元素类型“servlet”的内容必须匹配“（icon？，servlet-name，display-name ?,

Question

我知道的是关于顺序，但我已经尝试了所有posibilities， 如果它是某人可以解释我我的web.xml文件 感谢的顺序

<?xml version="1.0" encoding="UTF-8"?> 
<!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> 
    <listener> 
     <listener-class>com.ewheelz.SessionCounter</listener-class> 
    </listener> 
    <servlet> 
    <description>This is the description of my J2EE component</description> 
    <display-name>This is the display name of my J2EE component</display-name> 
    <servlet-name>ConnectionPool</servlet-name> 
    <servlet-class>com.ewheelz.ConnectionPool</servlet-class> 
    </servlet> 

    <servlet-mapping> 
    <servlet-name>ConnectionPool</servlet-name> 
    <url-pattern>/servlet/ConnectionPool</url-pattern> 
    </servlet-mapping> 
    <welcome-file-list> 
     <welcome-file>Home.html</welcome-file> 
    </welcome-file-list> 

</web-app> 

Answer 1

更改此

​​

这样： - 。

<servlet>  
    <servlet-name>ConnectionPool</servlet-name> 
    <display-name>This is the display name of my J2EE component</display-name> 
    <description>This is the description of my J2EE component</description> 
    <servlet-class>com.ewheelz.ConnectionPool</servlet-class> 
    </servlet> 

diplay-name and description tag should come after servlet-name tag