Getting Started with JSP, El expressions (to use)

2018-08-12 22:55:23

* Getting Started with JSP and El expressions (to use)
* servlet/jsp is a two-way technology for two Dynamic Web Resources .
* page using servlet to generate HTML
response.getwriter ("<form action=" method= ' post ' > ");
response.getwriter ("<input type= ' text ' name= ' username ' >");
* Introduction to JSP
* java Server Pages Web pages on Java servers are executed on the server side .
* JSP can not only write Html+java code +jsp own code
* JSP operation Principle (* * * * *):jsp-translated into servlet--compile--access
   
* JSP script Element (JSP page can write Java code)
   
<%! %>: Define classes, define variables, define methods (infrequently used) member variables.
<%=%>: Output statement (output to page, no semicolon)
<%%>: Defining variables, statements
   
* El Quick Start
* Gets the contents of the domain object Request.setattribute ("xx", "yy");
${xx}
   

Getting started with JSP, El expressions (to use)