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JSTL

[JSTL] Core :: out tage

A형개발자 2016. 8. 4. 07:11

JSTL Core - out tag

Evaluates an expression and outputs the result of the evaluation to the current JspWriter object.

Attributes

Name

 Dynamic

 Decription

 Type

 Required

 value

true

Expression to be evaluated.

 Object

 Yes

 escapeXml

true

Determines whether characters <,>,&,’,” in the resulting string should be converted to their corresponding character entity codes. Default value is true.

 boolean

 No

 default

true

Default value if the resulting value is null.

 Object

 No


How to use

If a page url inclues a parameterName, then you can see the value on the page.

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<head>
<title>Tag Example</title>
</head>
<body>
<c:out value="${param.parameterName}"/>
</body>

If value is null, the default value takes over. If no default value is specified, it itself defaults to an empty string.

Reference

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