java - what is the difference between the tag with prefix "javaee:" and not with "javaee:" in web.xml? -


as title, difference between tag prefix "javaee:" , not "javaee:".

i find need set configuration using tag without "javaee:", , tag prefix "javaee:" not work

for example:

<welcome-file-list>     <welcome-file>default.jsp</welcome-file>     <welcome-file>default.html</welcome-file> </welcome-file-list>

works

but

<javaee:welcome-file-list>     <javaee:welcome-file>default.jsp</javaee:welcome-file>     <javaee:welcome-file>default.html</javaee:welcome-file> </javaee:welcome-file-list>

does not work.

i using tomcat 8.5.6 server.

below web.xml: 

<web-app id="webapp_id" version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xml="http://www.w3.org/xml/1998/namespace" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd ">     <display-name>squeen wechat</display-name>      <welcome-file-list>         <welcome-file>default.jsp</welcome-file>         <welcome-file>default.html</welcome-file>     </welcome-file-list>      <context-param>         <param-name>contextconfiglocation</param-name>         <param-value>             web-inf/config/spring/applicationcontext.xml         </param-value>     </context-param>      <context-param>         <param-name>log4jconfiglocation</param-name>         <param-value>web-inf/config/log4j.properties</param-value>     </context-param>      <listener>         <listener-class>             org.springframework.web.util.log4jconfiglistener         </listener-class>     </listener>      <listener>         <listener-class>             org.springframework.web.context.contextloaderlistener         </listener-class>     </listener> </web-app>

read below xml namespace. basics of xml.

enter image description here

so in web.xml if declaration follows:

<web-app  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_4.xsd" version="2.4">

you can write following without namespace.

<welcome-file-list>     <welcome-file>default.jsp</welcome-file>     <welcome-file>default.html</welcome-file> </welcome-file-list>

if web.xml looks follows has custom namespace declaration

(note: xmlns:javaee) :

<web-app  xmlns:javaee="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_4.xsd" version="2.4">

you have write same namespace follows:

<javaee:welcome-file-list>     <javaee:welcome-file>default.jsp</javaee:welcome-file>     <javaee:welcome-file>default.html</javaee:welcome-file> </javaee:welcome-file-list>

it's way how xml works. nothing else.


Comments

Post a Comment

Popular posts from this blog

aws api gateway - SerializationException in posting new Records via Dynamodb Proxy Service in API -

i getting "__type": "com.amazon.coral.service#serializationexception" as reply in postman & in test console in api gateway trying post record directly dynamodb using api proxy services.. referring aws article - https://aws.amazon.com/blogs/compute/using-amazon-api-gateway-as-a-proxy-for-dynamodb/ here's mapping { "tablename": "tablenamegoeshere", "item": { "id" : "$context.requestid" "eventname" : "$input.path('$.eventname')", "timestamp" : $input.path('$.timestamp'), "answers": "$util.parsejson($input.path('$.answers'))" } } update: did asked ... , worked if try add array of json objects gives me above same error - here's trying now. please - couldnt find on google well #set($inputroot = $input.path('$')) { "tablename": "answer", "item": {
Read more

asp.net - Problems sending emails from forum -

i have been redesigning site has message board, has been written guy looked after site. it has few problems , written in .asp , uses .mdb files database. you can see whole thing here . feel free post if helps, test thing have set using original files , new database. the basic problem when posts message, supposed email sent them, have posted it. when replies, originator supposed message, replier has been posted. i’d have thought @ point in process there should script/file in postmessage.asp? the postmessage.asp page below. <% option explicit %> <!-- #include virtual="common/adovbs.inc" --> <html> <head> <meta http-equiv="content-type" content="text/html; charset=windows-1252"> <meta name="generator" content="microsoft frontpage 4.0"> <meta name="progid" content="frontpage.editor.document"> <title>new page 2</title> <base target="_self"
Read more