[WARN] Failed to………………. 1 required artifact is missing.  for artifact:    org.apache.maven.plugins:maven-resources-plugin:maven-plugin:2.4.1 在m2eclipse有说是版本问题…. Note about 0.9.8 Workspace Incompatibility: If you are using m2eclipse 0.10.0 with a workspace that contains projects created under m2eclipse 0.9.8, you must remove the workspaceState.ser file. The workspaceState.ser file is located within the workspace directory in $workspacedir/.metadata/.plugins/org.maven.ide.eclipse/workspaceState.ser. If you remove this file, [...]