解决maven的“Dynamic Web Module 3.0 requires Java 1.6 or newer.”错误

需要添加一个插件,在build标签中添加

<plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.3.2</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>