Idea运行时报错：

解决办法：
修改项目下 .idea/workspace.xml，找到标签 <component name="PropertiesComponent"> ， 在标签里 加一行"dynamic.classpath": "true"

  <component name="PropertiesComponent"><![CDATA[{
  "keyToString": {
    "dynamic.classpath": "true",
    "RequestMappingsPanelOrder0": "0",
    "RequestMappingsPanelOrder1": "1",
    "RequestMappingsPanelWidth0": "75",
    "RequestMappingsPanelWidth1": "75",
    "RunOnceActivity.OpenProjectViewOnStart": "true",
    "RunOnceActivity.ShowReadmeOnStart": "true",
    "WebServerToolWindowFactoryState": "false",
    "last_opened_file_path": "E:/Java/IdeaWorkspace/leanmom/jeecg-boot",
    "nodejs_package_manager_path": "npm",
    "project.structure.last.edited": "Modules",
    "project.structure.proportion": "0.0",
    "project.structure.side.proportion": "0.0",
    "settings.editor.selected.configurable": "preferences.pluginManager",
    "show.run.dashboard.notification": "false",
    "spring.configuration.checksum": "db08a20d27f18c2aeca83fcca30dbfb7"
  }