1 <build>
 2     <plugins>
 3         <!-- 指定jdk -->
 4         <plugin>
 5             <groupId>org.apache.maven.plugins</groupId>
 6             <artifactId>maven-compiler-plugin</artifactId>
 7             <configuration>
 8                 <source>1.7</source>
 9                 <target>1.7</target>
10             </configuration>
11         </plugin>
12     </plugins>
13     </build>