Open Source Technology Basics: Teach you how to use Tomcat skillfully

Kitty Tomcat is actually very cute.

At the end of 2003, I changed the company, also changed the Webapp,tomcat appeared in front of Me (formerly using WebLogic), I am a bit dazed, free things really can use good? worry about ing ... (In fact, spent too long on Mars) went out to inquire, originally this cat from the-jakarta project, the 2001 Most innovative Java products (Most innovative Java product), Also has the Java boss Sun's strength (the official recommended servlet and the JSP container), later depended on it to eat. Don't say flat, get up first:

1, installation

The latest version of Tomcat is 5.0.29 (http://jakarta.apache.org/site/binindex.cgi)

If it can automatically find your JDK or set JAVA_HOME=C:/JDK under Windows

In Linux you need to unpack first, then set Java_home

Export JAVA_HOME=/USR/LOCAL/JDK

2, RUN

After Setup, you can run the Tomcat server, enter Tomcat's Bin directory, and start Tomcat under Windows with startup. Linux with startup.sh, the corresponding turn off Tomcat command for shutdown and shutdown.sh.

After starting the service in the browser input: 8080/To test

3, directory structure

Bin: Store startup and shutdown Tomcat scripts.

Conf: Contains different profiles, Server.xml (Tomcat's primary configuration file).

Work: Store the JSP generated class file after compiling.

Webapp: Store The Application sample, and the application you want to deploy in the future will also be placed in this directory.

Logs: Storing log files

Comm./server/shared: The Lib folder under these three folders puts the jar file.

1. Configure Server.xml Files

There's nothing to say, look at Tomcat's documentation more useful, here are some of the main things.

Element name	Property	Explain
Server	Port	Specifies a port that listens for the request to shut down Tomcat
Shutdown	Specifies the command string to send to the port
Service	Name	Specify the name of the service
Connector (indicates the connection between client and service)	Port	Specifies the port number to be created on the server side and listens for requests from the client on this fracture surface
Minprocessors	Number of threads created at server startup to process requests
Maxprocessors	Maximum number of threads that can be created for processing requests
Enablelookups	If true, a DNS query can be made by calling Request.getremotehost () to obtain the actual hostname of the remote client and, if False, not a DNS query, but rather a return of its IP address
Redirectport	Specifies a port number that is redirected after an SSL transfer request is received by the server while processing an HTTP request
Acceptcount	Specifies the number of requests that can be placed in the processing queue when all available processing requests are used, and requests that exceed this number will not be processed
ConnectionTimeout	Specify the number of times to timeout (in milliseconds)
Engine (represents a request processor in a specified service, receiving and processing requests from connector)	Defaulthost	Specifies the host name of the default processing request, which is at least the same as the Name property value of one of the host elements
Context (representing a Web application, usually a war file, and specific information about war see servlet specification)	DocBase	Path to the application or the path that the war file holds
Path	A prefix representing the URL of this Web application, so that the requested URL is: 8080/path/****
Reloadable	This property is very important, and if true, Tomcat automatically detects changes to the/web-inf/lib and/web-inf/classes directories of the application, automatically loads new applications, and we can change the application without having to restart Tomcat
Host (represents a virtual host)	Name	Specify host Name
AppBase	Application base directory, which is the directory where the application is stored
Unpackwars	If true, Tomcat automatically extracts the war file, otherwise does not understand the pressure, and runs the application directly from the war file
Logger (for logging, debugging, and error messages)	ClassName	Specifies the class name used by Logger, which must implement the Org.apache.catalina.Logger interface
Prefix	Specifies the prefix of the log file
Suffix	Specify the suffix of log file
Timestamp	If true, time is added to the log file name, as in the following example: Localhost_log.2001-10-04.txt
Realm (a database that holds user names, passwords, and role)	ClassName	Specifies the class name used by realm, which must implement the Org.apache.catalina.Realm interface
Valve (features similar to logger, whose prefix and suffix properties are interpreted in the same way as in logger)	ClassName	Specifies the class name used by valve, such as the use of the Org.apache.catalina.valves.AccessLogValve class to record access information for the application
Directory	Specify where log files are stored
Pattern	There are two values, common the remote host name or IP address, username, date, the first line of the requested string, the HTTP response code, the number of bytes sent. Combined is more than the common way to record