Shulou(Shulou.com)06/03 Report--

The working principle of tomcat server can be summarized as follows:

1. Tomcat is a process running in JVM. It is defined as "middleware", which, as its name implies, is an intermediate container between a Java project and JVM.

2. The essence of the Web project is a large number of resource files and methods. The Web project does not have an entry method (that is, the main method), which means that methods in the Web project do not run automatically.

The purpose of deploying the Web project into Tomcat's webapp is clear, and that is to expect Tomcat to call the written method to return the required resources and data for the client.

3. Tomcat can run and call the written method. Then Tomcat must have a main method. For Tomcat, it doesn't know what methods users will have, which are determined only after the project has been deployed under webapp.

From this, it can be seen that Tomcat uses the reflection of Java to realize the dynamic loading, instantiation, acquisition and invocation of classes. However, the Web project deployed to Tomcat must be written according to the specified interface in order to make calls.

These are the details of how tomcat works. Please pay more attention to other related articles!

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