让maven2编译时使用jdk1.5(5.0)的特性

<build>
  <finalName>myPortal</finalName>
  <pluginManagement>
  <plugins>
  <plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-compiler-plugin</artifactId>
  <version>2.0.2</version>
  <configuration>
  <source>1.5</source>
  <target>1.5</target>
  </configuration>
  </plugin>
  </plugins>
  </pluginManagement>
  </build>