Focus on the use of the three-mesh operator.
JSP is primarily responsible for showing that all complex business operations are given to the servlet to complete.
Calculation operator: +,-, *,/,% (modulo)
<%@ page contenttype= "text/html" pageencoding= "GBK"%>// storage is digital Pagecontext.setattribute ("NUM1"); Pagecontext.setattribute ("num2", +); %>Judgment operator: Equals (eq), unequal (NE), less than (LT), greater than (GT), less than or equal (LE), greater than or equal (GE)
<%@ page contenttype= "text/html" pageencoding= "GBK"%>// storage is digital Pagecontext.setattribute ("NUM1"); Pagecontext.setattribute ("num2", +); %>Logical operators: &&=and, | | =or,!=not
<%@ page contenttype= "text/html" pageencoding= "GBK"%>// storage is digital Pagecontext.setattribute ("Flaga",true); Pagecontext.setattribute ("FLAGB",false); %>The three-mesh operator is the most important: num1>num2? "Greater than": "Less than"
<%@ page contenttype= "text/html" pageencoding= "GBK"%>// storage is digital Pagecontext.setattribute ("Num1", ten); Pagecontext.setattribute ("num2"); Pagecontext.setattribute ("num3", +); %>Expression language-operator