JSTL if 예제들

ITWeb/개발일반 2010. 3. 15. 18:27

http://www.java2s.com/Code/Java/JSTL/CatalogJSTL.htm

http://www.java2s.com/Code/Java/JSTL/JSTLcoretagif.htm

JSTP core tag:if

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
<head><title>Using the Core JSTL tags</title></head>
<body>
<h2>Here are the available Time Zone IDs on your system</h2>
<jsp:useBean id="zone" class="com.java2s.ZoneWrapper" />
<jsp:useBean id="date" class="java.util.Date" />

<c:if test="${date.time != 0}" >

    <c:out value="Phew, time has not stopped yet...<br /><br />" escapeXml="false" />

</c:if>

<c:set var="zones" value="${zone.availableIDs}" scope="session" />

    <c:forEach var="id" items="${zones}">

        <c:out value="${id}<br />" escapeXml="false" />

    </c:forEach>

</body>
</html>
// Save the ZoneWrapper.class into WEB-INF/classes/com/java2s
//ZoneWrapper.java

package com.java2s;

import java.util.TimeZone;

public class ZoneWrapper {

  public ZoneWrapper() {
  }

  public String[] getAvailableIDs() {

    return TimeZone.getAvailableIDs();

  }

}

JSTL RT If

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<%@ taglib uri="http://java.sun.com/jstl/core-rt" prefix="c-rt" %>
<html>
  <head>
    <title>If Caseless</title>
  </head>

  <body>
    <c:set var="str" value="jStL" />

    <jsp:useBean id="str" type="java.lang.String" />

    <c-rt:if test='<%=str.equalsIgnoreCase("JSTL")%>'> They are
    equal</c-rt:if>
  </body>
</html>

JSTL If Else

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
  <head>
    <title>Using Choose,Otherwise and When</title>
  </head>

  <body>
    <c:if test="${pageContext.request.method=='POST'}">Ok, we'll
    send
    <c:out value="${param.enter}" />

    <c:choose>
      <c:when test="${param.enter=='1'}">pizza.
      <br />
      </c:when>

      <c:otherwise>pizzas.
      <br />
      </c:otherwise>
    </c:choose>
    </c:if>

    <form method="post">Enter a number between 1 and 5:
    <input type="text" name="enter" />

    <input type="submit" value="Accept" />

    <br />
    </form>
  </body>
</html>

JSTL If No Body

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
  <head>
    <title>If with NO Body</title>
  </head>

  <body>
    <c:if test="${pageContext.request.method=='POST'}">
    <c:if test="${param.guess=='5'}" var="result" />

    I tested to see if you picked my number, the result was
    <c:out value="${result}" />
    </c:if>

    <form method="post">Guess what number I am thinking of?
    <input type="text" name="guess" />

    <input type="submit" value="Try!" />

    <br />
    </form>
  </body>
</html>

If with Body

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
  <head>
    <title>If with Body</title>
  </head>

  <body>
    <c:if test="${pageContext.request.method=='POST'}">
      <c:if test="${param.guess=='5'}">You guessed my number!
      <br />

      <br />

      <br />
      </c:if>

      <c:if test="${param.guess!='5'}">You did not guess my number!
      <br />

      <br />

      <br />
      </c:if>
    </c:if>

    <form method="post">Guess what number I am thinking of?
    <input type="text" name="guess" />

    <input type="submit" value="Try!" />

    <br />
    </form>
  </body>
</html>

jjeong

JSTL if 예제들

티스토리툴바