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Maven Web. XML Header Setting error problem

Source: Internet
Author: User
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1. General development Tools when you create Web. XML, the Web. XML header is added by default, and some plugins (such as MAVEN related plug-ins) are added by default to

The version and your development tools are set differently in project facets. Then it will cause a small red X on the item, but not prompt.

　

: Error But don't know where the error is.

2. At this point we need to view the item--right-click Properties-->project facets

　　

3. Then find your web. xml file

Set this here to the value you viewed in step 2: "Http://java.sun.com/dtd/web-app_3_1.dtd" to

4. Results

Maven Web. XML Header Setting error problem

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