[Maven] "Dynamic Web Module 3.0 requires Java 1.6 or newer." or "Jax-rs (REST Web Services) 2.0 requires Java 1.6 or newer."

Open source projects downloaded on the Web, built with Maven, with an error:

Dynamic Web Module 3.0 requires Java 1.6 or newer.

Jax-rs (REST Web Services) 2.0 requires Java 1.6 or newer.

Even if you set the Properties->java Compiler->complier compliance level to 1.7 or 1.8, it doesn't work.

Workaround:

The first step is to define the version of the JDK in Pom.xml, as follows

    <build>        <finalName>Example</finalName>        <plugins>            <plugin>                < Groupid>org.apache.maven.plugins</groupid>                <artifactid>maven-complier-plugin</artifactid >                <version>3.0</version>                <configuration>                    <source>1.7</source>                    <target>1.7</target>                    <encoding>UTF-8</encoding>                </configuration>            </plugin>        </plugins>  </build>

And

<properties>            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        < Maven.compiler.encoding>utf-8</maven.compiler.encoding>    <maven.compiler.source>1.7</ maven.compiler.source>    <maven.compiler.target>1.7</maven.compiler.target>    < Maven.compiler.compilerversion>1.7</maven.compiler.compilerversion>    </properties>

　　

In the second step, modify the Org.eclipse.jdt.core.prefs file in the. Settings folder to change the version to 1.7

org.eclipse.jdt.core.compiler.codegen.targetplatform=1.7org.eclipse.jdt.core.compiler.compliance =1.7Org.eclipse.jdt.core.compiler.source=1.7

In the third step, modify the Org.eclipse.wst.common.project.facet.core.xml in the. Settings folder to change the Java version to 1.7

<installed facet= "java" version= "1.7"/>

When you are done, refresh the project with MAVEN's update project operation.

[Maven] "Dynamic Web Module 3.0 requires Java 1.6 or newer." or "Jax-rs (REST Web Services) 2.0 requires Java 1.6 or newer."