Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.0:shade (default) on project QMServer: Execution default of goal org.apache.maven.plugins:maven-shade-plugin:2.0:shade failed: A required class was missing while executing org.apache.maven.plugins:maven-shade-plugin:2.0:shade: org/sonatype/aether/graph/DependencyNode

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使用eclipse 的Maven 在构建的时候出现这个错，可能是eclipse里的maven插件的版本更新之后，相应的POM.xml文件没有更新，只需要把version里的版本升高就行了。我升到了2.1.当然如果你的eclipse里的maven插件版本不是最新的，但是却用了最新的POM.xml,也是有可能造成这些错误的，反正调节版本就OK了

????????????<plugin>

????????????????<groupId>org.apache.maven.plugins</groupId>

????????????????<artifactId>maven-shade-plugin</artifactId>

????????????????<version>2.0</version>（我在这里把2.0改为了2.1）

????????????????<executions>

????????????????????<execution>

????????????????????????<phase>package</phase>

????????????????????????<goals>

????????????????????????????<goal>shade</goal>

????????????????????????</goals>

????????????????????????<configuration>

????????????????????????????<transformers>

????????????????????????????????<transformer

????????????---

????????????????????????????????</transformer>

????????????????????????????</transformers>

????????????????????????</configuration>

????????????????????</execution>

????????????????</executions>

????????????</plugin>

Failed to execute goal org.apache.maven.plugins:maven-shade-plugin:2.0:shade