27 Advanced Java Servlet Tutorial | HTML to servlet communication using hyperlink

Advanced Java Servlet Tutorial : #Example application on HTML to servlet communication using hyperlink:

So far we supplied input values to the servlet program of web application by typing query string with request parameter in browsers adderss/URL bar as like:

http://localhost:2020/DateApp/test1?s...

Using query string request param to supply input values is not industry standard because that does not provide user-friendly user interface to end user. To provide GUI to end user we need to work with HTML form pages & web pages with hyerlinks.

To make these form pages & hyperlinks generating request to servlet/JSP programs we need HTML-servlet/jsp communication

diag

Form page generated request carries the form data as input data/request parameter values to server.

Hyeperlink generated request does not carry input data along with request message body.

diag:

Note: HTML program generates static web pages.
- Servelt , JSP programs can generate both static, dyanamic web page.
- There is no need of configuring HTML programs in web.xml file.
- HTML programs are identified with their file names with extension (.html or .htm)

#Create Example Web application on HTML to servlet communication using hyperlink:
=======================================================================
Deployment Directory structor:
9WishApp (web-root/context folder)
-------
|
|--------page.html
|--------WEB-INF
|
|------web.xml (configuration file)
|------classes
|
|------WishServlet.java
|------WishServlet.class

Note: Always place .html, .jsp, images files in web-root directory of web application(outside the WEB-INF folder/directory)

a href="http://localhost:2020/9WishApp/wurl"

wurl: URL pattern of WishServlet Program

use below URL to hit:
http://localhost:2020/9WishApp/page.html