类文件无法被引用，且显示为java文件处理方案

IDEA提示：The file size (3.48MB) exceeds configured limit (244 MB). Code insight features are not available.

错误表现：

1.某个java类确定存在项目中，却在引用处提示找不到该类
2.对应的类文件中提示
the file size(3.40M) exceeds configured limit(2.56M).Code insight features are not available
3.对应的文件显示为 **.java文件，没有显示该文件是一个Class文件

原因：

该文件超过IDEA感知的最大文件大小

#---------------------------------------------------------------------
# Maximum file size (kilobytes) IDE should provide code assistance for.
# The larger file is the slower its editor works and higher overall system memory requirements are
# if code assistance is enabled. Remove this property or set to very large number if you need
# code assistance for any files available regardless their size.
#---------------------------------------------------------------------
idea.max.intellisense.filesize=2500

解决方案：

1.修改IDEA配置文件中的配置文件，重启后生效

路径：…\IntelliJ IDEA \bin\idea.properties

修改内容：idea.max.intellisense.filesize

2.在IDEA开发页面，点击help→Edit Custom Properties，会在…\IntelliJIdea2018.2\config目录下创建idea.properties文件，文件内容中设置idea.max.intellisense.filesize