Idea 中出现：运行 Application时出错。命令行过长。 通过 JAR 清单或通过类路径文件缩短命令行，然后重新运行。
在项目的 .idea 目录下的 workspace.xml 中的

一、可能是以下样式

 <component name="PropertiesComponent"><![CDATA[{
  "keyToString": {
    "RunOnceActivity.OpenProjectViewOnStart": "true",
    "RunOnceActivity.ShowReadmeOnStart": "true",
    "WebServerToolWindowFactoryState": "false",
    "node.js.detected.package.eslint": "true",
    "settings.editor.selected.configurable": "MavenSettings",
    "spring.configuration.checksum": "b68eddc20618f0021d9e6631a68262d2"
  }
}]]></component>

添加以下内容：

"dynamic.classpath": "true"

最终展示

 <component name="PropertiesComponent"><![CDATA[{
  "keyToString": {
    "RunOnceActivity.OpenProjectViewOnStart": "true",
    "RunOnceActivity.ShowReadmeOnStart": "true",
    "WebServerToolWindowFactoryState": "false",
    "node.js.detected.package.eslint": "true",
    "settings.editor.selected.configurable": "MavenSettings",
    "spring.configuration.checksum": "b68eddc20618f0021d9e6631a68262d2",
    "dynamic.classpath": "true"
  }
}]]></component>

二、 也可能是以下样式

 <component name="PropertiesComponent">
    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
    <property name="RunOnceActivity.ShowReadmeOnStart" value="true" />
    <property name="settings.editor.selected.configurable" value="project.propCompiler" />
  </component>

添加一个新的属性：

<property name="dynamic.classpath" value="true" />