I want to implement it additionally while using kotlin on a site running Java

Premise

• Not very knowledgeable

Environment

Intellij IDEA

• declaration doesn't work
• I thought it was a module folder, but it feels different
• Apart from the environment, there is a menu of project structure, and I set the library folder there
• request.getAttribute () cannot be done yet
• I was able to refer to it by installing tomcat with brew and specifying the lib as a library.
• Added as global library
• (It seems that the name is covered with local) It seems good to set the replacement to No

Launch a web application in IntelliJ IDEA Tomcat --gyamin's diary http://gyamin.hatenablog.com/entry/2016/10/24/001025

Apache Tomcat® - Welcome! http://tomcat.apache.org/

Working with modules - Help | IntelliJ IDEA https://www.jetbrains.com/help/idea/creating-and-managing-modules.html

How do I evaluate objects when debugging a JSP? – IDEs Support (IntelliJ Platform) | JetBrains https://intellij-support.jetbrains.com/hc/en-us/community/posts/206853245-How-do-I-evaluate-objects-when-debugging-a-JSP-

Tomcat web.xml

The basics of web.xml that I wanted to know when I was a newcomer. --Thank you programming https://blog.codebook-10000.com/entry/20130607/1370621189

Writing web.xml-Creating and deploying applications-Introduction to Servlets https://www.javadrive.jp/servlet/context/index3.html

Understand the web.xml of Tomcat and think about the consistency with the URL https://searchman.info/java_eclipse/1050.html

1. Servlet configuration and execution (3) | TECHSCORE http://www.techscore.com/tech/Java/JavaEE/Servlet/1-3/

Is there a default Servlet?

Java Road: Servlet (14. Annotations) http://www.javaroad.jp/servletjsp/sj_servlet14.htm

Annotation

Creating and configuring a Servlet http://otndnld.oracle.co.jp/document/products/wls/docs92/webapp/configureservlet.html

Each web application has a default Servlet. This default Servlet can be specified by the administrator, but if not specified, WebLogic Server uses an internal Servlet called FileServlet as the default Servlet.

How can I investigate the default Servlet and map it to requests ending in /? Story --my-notebook http://www.my-notebook.net/dac9a02c-d9c4-48a9-9505-be767ff65886.html

Then, I think you should use a Servlet that inherits the default Servlet that is normally applied in your Servlet container (jetty in this case).

Servlets and JSPs

Let's understand from the basics! What is Servlet / JSP | TechAcademy Magazine https://techacademy.jp/magazine/17483

I wonder if jsp is dynamically compiled. .. I wonder if it will be done with Tomcat. I wonder if it will be cached to some extent. ..

What is Java Servlet? | An IT terminology dictionary that makes you feel like "I understand" and "I don't understand" https://wa3.i-3-i.info/word12835.html

Is it a servlet container? ..

1. 1. Lifecycle management
2. Multi-thread support
3. 3. Platform independent Naruhoro. ..

Java Servlet and JSP concepts you should know | PC Studio NEXMAG https://www.pc-koubou.jp/magazine/2292

So why are there two ways to create a web app: Servlet and JSP? That is to allow programmers and designers to share their work. Naruhoro. ..

The expression EL (Expression Language) Is there such a thing?

Reading with IDE

• Decompiling a darblet is convenient, how do you do it?
• Since it was decompiled without any particular awareness, a post-installation survey
• I wonder if I can spit out decompiled files all at once
• Maybe it has Java Bytecode decompiler by default
• What is ʻoutput directory`?

View source code decompiled class files in IntelliJ IDEA-Qiita https://qiita.com/tamura__246/items/e6d7a8e4d3d8ac5f35e7

Java decompile and check default constructor --Qiita https://qiita.com/yk0614/items/16a32e0f9542b6acd7e3

JAVA decompile (decompile) --Qiita https://qiita.com/RUSH234dev/items/a8b933aa0514fc8f51c1

intellij-idea --Java source replaced with Intellij decompiled files https://stackoverrun.com/ja/q/10586975

What is war? ..

It is divided by layer and usage, but the compression format is zip.

I implemented a buggy web application in Kotlin-Qiita https://qiita.com/tamura__246/items/ce2932809b9e4ec0297e

Differences between JAR, WAR, and EAR-Blog aiming to learn Java http://d.hatena.ne.jp/java-wizard/20140311/1394538929

Java-Does Java need as many as three packaging formats, JAR WAR EAR? ｜ teratail https://teratail.com/questions/32911

Considering introducing kotlin

• Direction

• Convert existing one

• Separate and add new ones

• Example of building with gradle

I think I can do it.

Servlet in Kotlin-A Memorandum http://etc9.hatenablog.com/entry/2015/05/13/073641

Creating Web Applications with Http Servlets - Kotlin Programming Language https://kotlinlang.org/docs/tutorials/httpservlets.html

• Framework
• Environment
• Narrow the range of influence
• Understand the risks
• Think about the future

How to make an executable jar in Intellij IDEA-Qiita https://qiita.com/nwtgck/items/7a61c5bb9d5b2d266cfe

A good combination of web frameworks Jooby and Kotlin | yan's Handicraft https://ti.que.jp/p/2018/09/17/jooby_kotlin/

Introducing Jooby, the lightweight web framework of choice for server-side development in Kotlin and why | MMJ Engineer Tech Blog https://www.mediamaxjapan.com/techblog/articles/why-we-choose-jooby/

Create a web app with Kotlin + Spark and write a test --Qiita https://qiita.com/fisherman08/items/7593a654633e5808956a

tsuyok/kotlin-ddd-demo https://github.com/tsuyok/kotlin-ddd-demo

system-sekkei/isolating-the-domain： Spring Boot ： gradle, Spring MVC, Thymeleaf, MyBatis and Spring Security sample https://github.com/system-sekkei/isolating-the-domain