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本文介绍了解决Eclipse中创建使用Dynamic Web Module 3.1支持项目时出现的错误提示“需要Java 1.7或更高版本”的方法。通过调整项目配置、设置Java版本及修改pom.xml文件等方式可以有效解决此问题。

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How to solve “Dynamic Web Module 3.1 requires Java 1.7 or newer” in Eclipse

SHORT LINK:

Last Updated on June 20th, 2015 by Crunchify 10 Comments

Have you noticed above type of error in your Eclipse? When you’re creating a project with Dynamic Web Module 3.1 support, you should be using Java 1.7 or newer. Please follow below steps to resolve it.

Step1:

Make sure your Java Project is configured probably to use Java 1.7.

Right click your project > Properties > Java Compiler and set “Compiler compliance level” to 1.7

Step2:

Java Build Path. Click “Edit“. And change it to “Java 7”

Step3:

Next from the menu on the left select Project Facets > Java and set its version to 1.7

Extra Tips:

If you have maven project try adding below code to pom.xml file.

pom.xml 
   
          1
        
          2
        
          3
        
          4
        
          5
        
          6
        
          7
        
          8
        
          9
        
          10
        
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         <
         build
         >
        
         <
         plugins
         >
        
         <
         plugin
         >
        
         <
         groupId
         >
         org
         .
         apache
         .
         maven
         .
         plugins
         <
         /
         groupId
         >
        
         <
         artifactId
         >
         maven
         -
         compiler
         -
         plugin
         <
         /
         artifactId
         >
        
         <
         version
         >
         3.1
         <
         /
         version
         >
        
         <
         configuration
         >
        
         <
         source
         >
         1.7
         <
         /
         source
         >
        
         <
         target
         >
         1.7
         <
         /
         target
         >
        
         <
         /
         configuration
         >
        
         <
         /
         plugin
         >
        
         <
         /
         plugins
         >
        
         <
         /
         build
         >

Alternate Solution:

Another way is to edit the project facet configuration file itself: org.eclipse.wst.common.project.facet.core.xml
Change the dynamic web module version in this line to 3.1 – <installed facet="jst.web" version="3.0"/>
And then Maven -> Update Project. You’ll find this file in the .settings directory within the Eclipse project.