http://blog.csdn.net/smst1987/article/details/6871495
问题：maven-dependency-plugin (goals "copy-dependencies","unpack") is not supported by m2e
解决方法：
1 <build> 2 <pluginManagement> 3 <plugins> 4 <plugin> 5 <groupId>org.eclipse.m2e</groupId> 6 <artifactId>lifecycle-mapping</artifactId> 7 <version>1.0.0</version> 8 <configuration> 9 <lifecycleMappingMetadata> 10 <pluginExecutions> 11 <pluginExecution> 12 <pluginExecutionFilter> 13 <groupId>org.apache.maven.plugins</groupId> 14 <artifactId>maven-dependency-plugin</artifactId> 15 <versionRange>[2.0,)</versionRange> 16 <goals> 17 <goal>copy-dependencies</goal> 18 </goals> 19 </pluginExecutionFilter> 20 <action> 21 <ignore /> 22 </action> 23 </pluginExecution> 24 </pluginExecutions> 25 </lifecycleMappingMetadata> 26 </configuration> 27 </plugin> 28 </plugins> 29 </pluginManagement> 30 <plugins> 31 <plugin> 32 <groupId>org.apache.maven.plugins</groupId> 33 <artifactId>maven-dependency-plugin</artifactId> 34 <executions> 35 <execution> 36 <id>copy-dependencies</id> 37 <phase>package</phase> 38 <goals> 39 <goal>copy-dependencies</goal> 40 </goals> 41 <configuration> 42 <outputDirectory>${project.build.directory}/lib</outputDirectory> 43 <excludeTransitive>false</excludeTransitive> 44 <stripVersion>true</stripVersion> 45 </configuration> 46 </execution> 47 </executions> 48 </plugin> 49 </plugins> 50 </build>