javaweb项目编译错误

Eclipse Maven 开发一个 jee 项目时，编译时遇到以下错误：
Description Resource Path Location Type
Dynamic Web Module 3.0 requires Java 1.6 or newer. bdp line 1 Maven Java EE Configuration Problem

Description Resource Path Location Type
One or more constraints have not been satisfied. bdp line 1 Maven Java EE Configuration Problem

解决方案：

　　使用 maven-compiler-plugin 将 maven 编译级别改为 jdk1.6 以上：

　　

<build>
    <plugins>
        <!-- define the project compile level -->
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>2.3.</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
            </configuration>
        </plugin>
    </plugins>
</build>