maven 构建项目时出错 “Dynamic Web Module 3.1 requires Java 1.7 or newer” in Eclipse

记录一下，水平太菜，花费了半天时间。

pom.xml

<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>

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