Tomcat

Posted by Learning libs on December 20, 2019

Tomcat

What’s Tomcat

Tomcat is an application server from the Apache Software Foundation that executes Java servlets and renders Web pages that include Java Server Page coding. Described as a “reference implementation” of the Java Servlet and the Java Server Page specifications, Tomcat is the result of an open collaboration of developers and is available from the Apache Web site in both binary and source versions. Tomcat can be used as either a standalone product with its own internal Web server or together with other Web servers, including Apache, Netscape Enterprise Server, Microsoft Internet Information Server (IIS), and Microsoft Personal Web Server. Tomcat requires a Java Runtime Enterprise Environment that conforms to JRE 1.1 or later. Tomcat is one of several open source collaborations that are collectively known as Jakarta.

Install Tomcat

  1. Go to official website, download Tomcat you need.
  2. Config Environment Variables
    • Go to desktop, find Computer or This PC, right click, then choose Properties
    • Choose Advanced system settings on the left, pop up System Properties window, then choose Environment Variables.
    • Add new System Variable named: CATALINA_HME and Variable value is the Tomacat path you made.
    • Edit Path in System Variables, add %CATALINA_HME%\bin(if needed, you need to add semicolon at the end of the variable you added)
  3. Navigate to Tomcat/bin folder, open cmd as Administrator, exec service.bat install command to install Tomcat.
  4. The last thing you need to do is start Tomcat service
    • Also navigate to Tomcat/bin folder, double click startup.bat or catalina.bat or tomcat*.exe, etc.
  5. You can navigate to Tomcat/conf folder find server.xml to update http port (default port is 8080)
  6. open browser input localhost://[your http port] to browser Tomcat default page, also you can put your project under Tomcat/webapps.
  7. put your project under Tomcat/webapps, then you need to configure server.xml. add <Context path="/[visit path]" docBase="[relative path,default current path is webapps ]" reloadable="true"/> under <Host>

start Tomcat

if you successfully installed Tomcat, every time you want to use Tomcat is only need to start Tomcat service(navigate to Tomcat/bin folder, double click startup.bat or catalina.bat or tomcat*.exe, etc.)

references

https://blog.csdn.net/weixin_42109012/article/details/94383001

JDK

What’s JDK

JDK include JRE

Install JDK

  1. Go to official website, download JDK you need.
  2. Double click JDK package you downloaded,click next to install(you can customize your install path)
  3. Config Environment Variables
    • Go to desktop, find Computer or This PC, right click, then choose Properties
    • Choose Advanced system settings on the left, pop up System Properties window, then choose Environment Variables.
    • Add new System Variable named: JAVA_HOME and Variable value is the Tomacat path you made.
    • Edit Path in System Variables, add %JAVA_HOME%\bin(if needed, you need to add semicolon at the end of the variable you added)
  4. Run cmd, input java -version or javac -version to valify java install successfully or not and check java version.

Uninstall JDK

  1. open control panel, uninstall Java
  2. also you may need to delete regedit.

Redis

What’s Redis

Install redis

  1. Go to website download redis you need(ps: different environment need different redis,like linux, window)
  2. extract zip file you download, navigate to root path, run cmd->redis-server.exe start redis service.if you see redis login in the window, it shows redis install successfully.
  3. run another cmd, input redis-cli.exe then you can get connect to server.
  4. if you close the cmd window, the redis service will closed, hence if you want to put redis service into window service, then you can: cmd->redis-server.exe --service-install redis.windows.conf --loglevel verbose, the last parameter --loglevel verbose means log level. after run this cmd, you will see redis service in window services list(Window+R->services.msc) redis-server --service-install redis.windows.conf --loglevel verbose

Issue in redis

Invalid argument during startup: Failed to open the .conf file: verbose CWD=C:\developer\redis….

Solve: redis-server --service-install redis.windows.conf --loglevel verbose

creating server tcp listening socket *:6379: listen: unknown error.
Solve: configure redis.windows.conf, remove ‘#’ before bind 127.0.0.1

uninsatll redis

  • redis-server --service-uninstall.
  • cmd->redis->\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\, delete redis.

common cmd in redis

  • uninstall service: redis-server --service-uninstall
  • start service: redis-server --service-start
  • stop service: redis-server --service-stop
  • redis-cli shutdown
  • rename sercie: redis-server --service-name name

easy pattern: redis-cli.exe specified pattern: redis-cli.exe -h 127.0.0.1 -p 6379 -a requirepass (also, you can re-change password in redis.windows.conf)

Redis Desktop Manager

https://redisdesktop.com/download

references

https://blog.csdn.net/u011277123/article/details/78692603/ https://blog.csdn.net/weixin_43953753/article/details/86019883 https://www.cnblogs.com/dingguofeng/p/8709476.html https://blog.csdn.net/wu_zongwen/article/details/80318916