【JavaWeb】Tomcat

web server software:

: The server computer server software installed

Server Software: receiving a user's request, processes the request, responds

web server software: receiving a user's request, process the request, responds.
In the web server software, you can deploy web projects, allowing users to access these items through a browser
web container

Tomcat: web server software

1. Download: http://tomcat.apache.org/
2. Installation: extract the archive to
3. Uninstall: Delete the directory on the line
4. start up:
   • bin / startup.bat, double-click the file to run

   • Access: Enter the browser: http: // localhost: 8080 Enter access to your
     http: // others ip: 8080 visit others

   • Possible problems encountered:
     1. Black window flashed:
        • The reason: the JAVA_HOME environment variable is not configured correctly
        • Solution: Configure JAVA_HOME environment variable
     2. Start being given:
        1. Violence: find the port number occupied, and find the corresponding process, kill it
           • netstat -ano
        2. Gentle: modify its port number
           • conf/server.xml
           • The default port number of the general will is 80.80 tomcat port number is the default port number for http protocol.
             • Benefits: When you visit, do not enter the port number
5. shut down:
   1. Normally closed:
      • bin/shutdown.bat
      • ctrl+c
   2. Forced off:
      • Click Start window ×
6. Configuration:
   • Deployment of the project:
     1. The project can be put directly under the webapps directory.
        • / Hello: access path of the project -> Virtual Directory
        • Simplify deployment: the project package labeled as a war, then war pack is placed under the webapps directory.
          • war package will automatically unzip
     2. Configuration conf / server.xml file (generally do not have this, because this is a core document)
        in Tag body configuration
        <Context docBase = "D: \ hello" path = "/ hehe" />
        • docBase: items stored path
        • path: Virtual Directory
     3. In conf \ Catalina \ localhost create xml file any name. Written in the file
        <Context docBase = "D: \ hello" />
        • Xml file name: Virtual Directory
   • Static items and dynamic items:
     • Directory Structure
       • java directory structure in a dynamic entry:
         - the project root
         - WEB-INF directory:
         - the web.xml: Web items core profile
         - Catalog classes: directory to bytecode files
         - lib directory: placing dependent jar package