nullattributeexception.java

来自「基于netbeans的java桌面应用程序合集」· Java 代码 · 共 82 行

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package org.apache.taglibs.standard.examples.taglib;

import javax.servlet.jsp.JspTagException;

/**
 * <p>NullAttributeException is a JspTagException that will be thrown
 * by the JSTL RI handlers when a tag attribute illegally evaluates
 * to 'null'.</p>
 *
 * @author Shawn Bayern
 */

public class NullAttributeException extends JspTagException {

    /**
     * Constructs a ExpressionException with appropriate information.
     *
     * @param tag The name of the tag in which the error occurred.
     * @param att The attribute value for which the error occurred.
     */
    public NullAttributeException(String tag, String att) {
	super("The '" + att + "' attribute illegally evaluated to 'null' "
	    + "in &lt;" + tag + "&gt;.");
    }
}