解决Cannot detect Web Project version

创建maven web工程，报如下错误：

Cannot detect Web Project version. Please specify version of Web Project through <version> configuration property of war plugin. E.g.: <plugin> <artifactId>maven-war-plugin</artifactId> <configuration> <version>3.0</version> </configuration> </plugin>

解决方案：
在pom.xml添加如下代码

<build>    <plugins>        <plugin>            <artifactId>maven-compiler-plugin</artifactId>            <configuration>                <source>1.7</source>                <target>1.7</target>            </configuration>        </plugin>        <plugin>            <artifactId>maven-war-plugin</artifactId>            <version>2.4</version>            <configuration>                <version>3.0</version>            </configuration>        </plugin>    </plugins></build>

由于项目未指定maven war编译插件，添加以上代码后Run Maven4MyEclipse->Update Project or use Quick