The structure and element parameters of Tomcat

the element structure of Tomcat
1. Tomcat consists of a series of configurable components, the core of which is the servlet container component, which is the top-level container for all other Tomcat components, and 2, each component of Tomcat can be in the <catalina_home>/conf/ Server.xml "file, each Tomcat component corresponds to a configuration element in Server.xml, the following is a typical structure of a server.xml:

1

<Server>

2

<Service>

3

<connector/>

4

<Engine>

5

<Host>

6

<Context>

7

</Context>

8

</Host>

9

</Engine>

10

</Service>

11

</Server>

The elements in the configuration file can be divided into the following 4 categories: 1) Top class elements: including <Server><Service>;<server>: Represents the entire servlet container component, which is the top-level element of Tomcat and can contain one or more <Service>;
<service&gt: Contains a <Engine> and one or more <connector&gt, and these <Connector> share a <Engine>;
2) Connector class element: for <Connector>;<connector&gt: Represents a communication interface between the client and the server, responsible for sending the client's request to the server and returning the server's response to the customer;
3) Container class elements: 4 classes <Engine><Host><Context><Cluster>&LT;ENGINE&GT: Handle all <Connector> received customer requests from the same <Servcie>;
<context&gt: The most frequently used element, each <Context> represents a single Web application running on a virtual host, and a <Host> can contain multiple <Context>;
4) Nested class containerRepresents components that can be embedded in a container, such as <Value> and <Realm>;

Tomcat's directory structureThe following is a subdirectory of the Tomcat installation directory that will feature

/bin	Store startup and shutdown Tomcat control scripts
/conf	Store tomcat various configuration files, which are more commonly used by server.xml
/lib	Jar files that are accessible to both the Tomcat server and all Web applications
/logs	Log files that hold Tomcat
/webapps	When publishing a Javaweb program on Tomcat, the Web application is stored in this directory by default
/work	Tomcat's working directory, Tomcat stores some of the runtime's working files in this directory, as by default, Tomcat stores JSP-compiled Servelet class files in this directory

A typical Java Web application directory structure (stored in the WebApps root directory, assuming the project name is DemoApp) 1

/webapps

2

|--demoapp

3

4

|--mypackage

5

|--dispatcherservlet.java

6

|--hellotag.java

7

|--web-inf

8

|--web.xml

9

|--mytaglib

10

|--classes

11

|--mypackage

12

|--dispatcherservlet.class

13

|--hellotag.class

14