1、在工作空間下找到 .idea/workspace.xml

2、查找<component name="PropertiesComponent">，並在該元素中添加屬性<property name="dynamic.classpath" value="true" />

<component name="PropertiesComponent">
    <property name="RequestMappingsPanelOrder0" value="0" />
    <property name="RequestMappingsPanelOrder1" value="1" />
    <property name="RequestMappingsPanelOrder2" value="2" />
    <property name="RequestMappingsPanelWidth0" value="75" />
    <property name="RequestMappingsPanelWidth1" value="75" />
    <property name="RequestMappingsPanelWidth2" value="75" />
    <property name="WebServerToolWindowFactoryState" value="false" />
    <property name="aspect.path.notification.shown" value="true" />
    <property name="com.android.tools.idea.instantapp.provision.ProvisionBeforeRunTaskProvider.myTimeStamp" value="1551682502269" />
    <property name="dynamic.classpath" value="true" />
 

</component

IDEA啟動Springboot報command line is too long問題解決