Description Resource Path Location Type Dynamic Web Module 3.1 requires Java 1.7 or newer. Ascend line 1 Maven Java EE Configuration Problem

pom.xml

build中加入

            <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>