maven编译插件

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