Idea configures tomcat to start a web project graphic tutorial

Configure tomcat

1. Click run configuration

2. Select tomcat local

3. Configure tomcat

4. Deploy web project

There are 2 ways to deploy
war package: package it into war and run it on the server. This method is more common.
war exploded: upload the web project to the server in the location relationship of the current folder. Just move the folders, jsp pages, classes, etc. directly to the Tomcat deployment folder for loading and deployment. Therefore, this method supports hot deployment and is generally used during development.

The way to get the absolute context path is different:
String contextPath = request.getSession().getServletContext().getRealPath("/");
We are using war exploded for demonstration.

We have already generated it here. If it is not generated, you can generate it manually.

Select Deployment

The suffix of application context and url should be the same, otherwise 404 will appear.
Start tomcat

Summarize

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