Question about compiling CSS in eclipse

[lzf neu <lzfneu@live.com>]

Dear Dr. Kay,

    I download the latest cs-studio?master and I plan to customize the code of archive.writer.rdb a bit to fufill my needs and then compile it in eclipse.

     I reference https://epics.anl.gov/tech-talk/2017/msg01344.php method and import existing maven projects with the root directory is cs-studio-master/applications/archive/archive-plugins/org.csstudio.archive.writer.rdb

     My problem is there are many errors in src folder and META-INF folder and plugin.xml file in eclipse package explorer list. The errors are like "...cannot be resolved...",and my eclipse version is java-oxygen and rcp-oxygen. I have no idea how to deal
 with it or if I miss some steps.

     Could you please give me some help and thanks in advance.

Zhefu