jsp-servlet-JDBC-sandbox
.gitignore
- Files and folder structures are added into .gitignore based on document
Tomcat, JBoss or Glassfish
- The main difference between these servers is explained here in doc
Branch : JSP Fundamentals
- How to include pages into JSP
Branch: readHTMLFormDataWithJSP
- Building forms using HTML
- Reading Form Data with JSP
- Building drop-down list
- Read data from drop-down list
- Building radio form list
- Read data from radio form
- Building check-box form
- Read data from check-box
Branch: State Management with JSP
- Session Tracking with JSP
- Session object always kept in Tomcat's memory
- More session object information here
Branch: JSP Tags
- JSTL tags
- Custom tags
- Every page that uses tags should include the link to uri even for an include page
- Core tags
- for-each
- if
- else (test = "not ${}")
- choose
- when
- otherwise
Branch: Function Tags
- length
- lowercase
- upperCase
- endsWith
- split
- join
Branch: i18n
- i18n - designing the application for various languages without changing the source code
- locale = language + region
- en_US = English(US)
- en_GB = English(UK)
- zh_CN = Chinese(Simplified)
- Another way to look at the differences is
- Change in date format
- Change in currencies
- Functions
- Setting Locale
- Messaging
- Number and Date Formatting
- Steps
- Create a resource file with language_REGION suffix
- Create JSP pages with labels
- Setting locale based on user selection
- i18n and L10N are bit easier using spring mvc I guess. And probably by using Google API translate. Haven't tried it yet. link
servlet-fundamentals
- Basic annotations for naming and urlpatterns for servlets
- Difference between get and post methods
- Difference between servlet and jsp
- Use both
- servlets - business logic
- jsp - presentation
- motivation to MVC
- How to send data from jsp-servlet, servlet-jsp, servlet-servlet and jsp-jsp
- can access a object's instance variable by directly accessing them at the jsp using . operator. No need of getObject()
Reading servlet parameters from web.xml
- Write information about servlet parameters in web.xml
- Use getServletContext() helper class to read and parse the information in web.xml
- Use getInitParameters to read its values
- Note: This method has a scope to all the servlets in the applications, not specific to any servlet
Git flow
- Following gitflow workflow from this article
Issues faced in this project
- How to add external jar files to the project
- Just copy-paste the .jar under the libs folder, right click on it and select 'Add as library' option from the list. It will do the rest.
- Auto-format in intelliJ for jsp files is all out of sync and not pretty
- Solved through this
- How to write comments in properties file
- Using # single comments. Link
- How to view quick inline documentation
- Using Ctrl + Q and mouse hover link
- Be careful in naming the properties file name. Any small typo in the name of the file will cause the application not able to read the information
- For instance: {mylabels._de_DE.properties => mylabels_de_DE.properties}
- Unable to display native font from foreign languages correctly. Possible character-encoding issue
- How to merge two repos?
- How to manually add dependencies or setting up tomcat to a blank project in IntelliJ
- What's an artifact?
- How to print values from an enumeration?
- How to provide servlet specific init param in the web.xml?
- How to missing java-docs?
- Better to use maven or gradle
- Redeploy the app when new class is added?
Tutorials
- Architecture overview for Java EE 8 applications here
- What is a session? Types of sessions? Read this blog
Thanks and Credits
- I have learned these tutorials from Udemy by Chad Darby. Please learn more in-depth tutorials from Chad Darby.