?? cookiecommenttag.java
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/*
* Copyright 1999,2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.taglibs.response;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import javax.servlet.jsp.tagext.*;
/**
* JSP Tag <b>comment</b>, used to set the comment of a cookie.
* <p>
* Must be nested within an <b>addCookie</b> tag.
* <p>
* The cookie comment is set to the content of the body of the <b>comment</b> tag.
* <p>
* JSP Tag Lib Descriptor
* <p><pre>
* <name>comment</name>
* <tagclass>org.apache.taglibs.response.CookieCommentTag</tagclass>
* <bodycontent>JSP</bodycontent>
* <info>Set a cookie comment.</info>
* </pre>
*
* @author Glenn Nielsen
*/
public class CookieCommentTag extends BodyTagSupport
{
/**
* Method called at start of tag, just returns EVAL_BODY_TAG
*
* @return EVAL_BODY_TAG
*/
public final int doStartTag() throws JspException
{
return EVAL_BODY_TAG;
}
/**
* Read the body of the comment tag to obtain the cookie comment.
*
* @return SKIP_BODY
*/
public final int doAfterBody() throws JspException
{
// Use the body of the tag as cookie comment
BodyContent body = getBodyContent();
String s = body.getString().trim();
// Clear the body since we only used it as input for the cookie
// comment
body.clearBody();
// Get the parent addCookie tag
AddCookieTag ac = null;
try {
ac = (AddCookieTag)this.findAncestorWithClass(this,
Class.forName("org.apache.taglibs.response.AddCookieTag"));
} catch(Exception e) {
throw new JspException("Response comment tag must be nested inside an addCookie tag.");
}
// set the cookie comment
ac.setComment(s);
return SKIP_BODY;
}
}
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