Issues with the MAVEN project in Eclipse: Troubleshoot the dynamic Web Module x.x requires Java x.x or newer.

After last night on Close project, get up today open Project found this problem. Now it's settled.

Emphasize. Before using Eclipse to create a MAVEN project, the Web. xml file default version is 2.3, but I changed it to 3.1, and the specific changes are:

To Tomcat find the Web. XML copy inside of this come on just fine.

Solution:

First: Add the following configuration to Pom.xml.

<build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <art Ifactid>maven-compiler-plugin</artifactid>
<!--here refers to the version in Web. Xml --<version>3.1</version> <configuration>
<!--here refers to the JDK version used, I am jdk1.8.0_40on the machine, so write 1.8 --<source>1.8</source> <target>1.8</target> </configuration> </plugin> </plugins></build& Gt

Second: Modify the configuration in the project's Org.eclipse.wst.common.project.facet.core.xml file: The following 1.8 and 3.1 correspond to the above version

  <installed facet= "java" version= "1.8"/>  <installed facet= "Jst.web" version= "3.1"/ >

Modify the appropriate configuration

When you are done, right-click the project-->maven-->update projects ... Update the project, then.

Issues with the MAVEN project in Eclipse: Troubleshoot the dynamic Web Module x.x requires Java x.x or newer.