Some questions about the learning process of Java web!

the problem is this: I have learned about the stage of the java web, framework by self-learning struts through online course videos, but I have encountered some doubts now!
the development tool I use is that IDEA, wants to configure a struts1 environment on idea, but it seems to be very difficult. Most of the tutorials on the Internet are about configuring struts2, so I feel like whether or not to skip struts1 and learn other frameworks directly. Anyway, struts1 is an old framework and should not be used in actual development, but I am afraid that this classic old framework will not be understood if it is not built and written by myself. Will it have an impact on future study?
pass: wants to use idea as a development tool. Configuring the previous version of struts acquisition will take a long time, or it may take a long time to configure it. I wonder if it"s worth spending time on this convenience!
I hope those who see it can give me some advice!

Windows intellij-idea struts java
May.28,2021
some are work-oriented.

you don't need to learn struts1, it's not worth the time. It is rarely used in practice, unless there are some old projects that you need to maintain.
this web mvc framework, you can learn struts2 or spring mvc, familiar with one of them, the truth is the same, the actual work to use other re-learning, get started very quickly.

as far as I am concerned, I studied struts2 at the beginning and used struts2 for about 2 years in my work. Later, the company used spring mvc. Look for some information and get started.

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
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MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b38290-2c0e3.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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