Java/JSTL/Application
Содержание
JSTL Cookie based Chat Room
<source lang="java">
//File: chat.jsp <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <%@ taglib uri="http://java.sun.ru/jstl/core-rt" prefix="c-rt" %> <c:if test="${pageContext.request.method=="POST"}"> <%
Cookie mycookie = new Cookie("login",request.getParameter("uid"));
mycookie.setMaxAge(0x7ffffff);
response.addCookie(mycookie);
%>
<c:redirect url="main.jsp">
<c:param name="uid" value="${param.uid}"/>
</c:redirect>
</c:if> <html>
<head>
<meta http-equiv="Content-Language" content="en-us" />
<title>Simple Chat with Cookie</title>
</head>
<body>
<c-rt:forEach var="aCookie" items="<%=request.getCookies()%>">
<c:if test="${aCookie.name=="login"}">
<c:set var="uid" value="${aCookie.value}"/>
</c:if>
</c-rt:forEach>
<form method="post">
|
Chat Login |
|
| User ID |
<input type="text" name="uid" value="<c:out value="${uid}"/>" size="20" />
|
|
<input type="submit" value="Submit" name="action" /> <input type="reset" value="Reset" /> |
|
</form>
Note: You may use any User ID you wish
</body>
</html>
//File: main.jsp <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html>
<head>
<title>Chat Joined</title>
</head>
<body>
<c:if test="${pageContext.request.method=="POST"}">
<c:choose>
<c:when test="${param.send!=null}">
<c:set var="chat"
value="${chat}${param.uid}:${param.text}
"
scope="application" />
</c:when>
<c:when test="${param.clear!=null}">
<c:set var="chat" value="" scope="application" />
</c:when>
</c:choose>
</c:if>
User: <c:out value="${param.uid}" /> |
<c:out value="${chat}" escapeXml="false" />
|
<form method="post">Message:
<input type="text" name="text" size="20" />
<input type="submit" name="send" value="Send" />
<input type="submit" name="refresh" value="Refresh" />
<input type="submit" name="clear" value="Clear" />
<input type="hidden" name="uid"
value="<c:out value="${param.uid}"/>" />
|
</body>
</html>
</source>
Simple Chat Application
<source lang="java">
//File: index.html <html>
<head> <meta http-equiv="Content-Language" content="en-us" /> <title>Simple Chat Application</title> </head> <body> <form action="main.jsp">
|
Chat Login |
|
| User ID |
<input type="text" name="uid" size="20" /> |
|
<input type="submit" value="Submit" name="action" /> <input type="reset" value="Reset" /> |
|
</form>
Note: You may use any User ID you wish
</body>
</html>
//File: main.jsp <%@ taglib uri="http://java.sun.ru/jstl/core" prefix="c" %> <html>
<head>
<title>Chat Joined</title>
</head>
<body>
<c:if test="${pageContext.request.method=="POST"}">
<c:choose>
<c:when test="${param.send!=null}">
<c:set var="chat"
value="${chat}${param.uid}:${param.text}
"
scope="application" />
</c:when>
<c:when test="${param.clear!=null}">
<c:set var="chat" value="" scope="application" />
</c:when>
</c:choose>
</c:if>
User: <c:out value="${param.uid}" /> |
<c:out value="${chat}" escapeXml="false" />
|
<form method="post">Message:
<input type="text" name="text" size="20" />
<input type="submit" name="send" value="Send" />
<input type="submit" name="refresh" value="Refresh" />
<input type="submit" name="clear" value="Clear" />
<input type="hidden" name="uid"
value="<c:out value="${param.uid}"/>" />
|
</body>
</html>
</source>
