全局配置文件：

C:\Users\用户名\.IntelliJIdea版本号\config\options\project.default.xml

启动报错“Command line is too long.”：

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

Maven默认配置：

<component name="MavenImportPreferences">
    <option name="generalSettings">
      <MavenGeneralSettings>
        <!-- 安装目录 -->
        <option name="mavenHome" value="D:/Program Files/apache-maven-3.6.3" />
        <!-- maven配置文件路径 -->
        <option name="userSettingsFile" value="D:\Program Files\apache-maven-3.6.3\conf\settings.xml" />
      </MavenGeneralSettings>
    </option>
  </component>