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    copied!<p>Ok, I have created a custom tab:</p> <p>Class:</p> <pre><code>package com.test; import java.util.Collections; import java.util.Enumeration; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.jsp.JspException; import org.apache.taglibs.standard.lang.support.ExpressionEvaluatorManager; import org.apache.taglibs.standard.tag.el.core.UrlTag; public class CustomUrlTag extends UrlTag { private static final long serialVersionUID = 1L; private String includeAllParams; private String excludeParams; public CustomUrlTag() { init(); } @Override public int doStartTag() throws JspException { return super.doStartTag(); } @Override public int doEndTag() throws JspException { if (isIncludeAllParam()) { final HttpServletRequest request = (HttpServletRequest) this.pageContext.getRequest(); // iterate over request parameters final List&lt;String&gt; requestParameterNames = Collections.list((Enumeration&lt;String&gt;) request.getParameterNames()); // exclude parameters if (null != excludeParams) { for (final String currentExcludeParam : excludeParams.split("[,]")) { requestParameterNames.remove(currentExcludeParam); } } for (final String parameterName : requestParameterNames) { // add parameters addParameter(parameterName, request.getParameter(parameterName)); } } return super.doEndTag(); } @Override public void release() { super.release(); init(); } private void init() { includeAllParams = null; } private boolean isIncludeAllParam() throws JspException { final Object r = ExpressionEvaluatorManager.evaluate("includeAllParams", includeAllParams, java.lang.Boolean.class, this, pageContext); if (r != null) { return ((Boolean) r).booleanValue(); } return false; } public void setIncludeAllParams(String includeAllParams) { this.includeAllParams = includeAllParams; } public void setExcludeParams(String excludeParams) { this.excludeParams = excludeParams; } } </code></pre> <p>tld:</p> <pre><code>&lt;tag&gt; &lt;description&gt; Creates a URL with optional query parameters. &lt;/description&gt; &lt;name&gt;customUrl&lt;/name&gt; &lt;tag-class&gt;com.test.CustomUrlTag&lt;/tag-class&gt; &lt;body-content&gt;JSP&lt;/body-content&gt; &lt;attribute&gt; &lt;description&gt; Name of the exported scoped variable for the processed url. The type of the scoped variable is String. &lt;/description&gt; &lt;name&gt;var&lt;/name&gt; &lt;required&gt;false&lt;/required&gt; &lt;rtexprvalue&gt;false&lt;/rtexprvalue&gt; &lt;/attribute&gt; &lt;attribute&gt; &lt;description&gt;URL to be processed.&lt;/description&gt; &lt;name&gt;value&lt;/name&gt; &lt;required&gt;true&lt;/required&gt; &lt;rtexprvalue&gt;true&lt;/rtexprvalue&gt; &lt;/attribute&gt; &lt;attribute&gt; &lt;description&gt;&lt;/description&gt; &lt;name&gt;includeAllParams&lt;/name&gt; &lt;required&gt;true&lt;/required&gt; &lt;rtexprvalue&gt;true&lt;/rtexprvalue&gt; &lt;/attribute&gt; &lt;attribute&gt; &lt;description&gt;&lt;/description&gt; &lt;name&gt;excludeParams&lt;/name&gt; &lt;required&gt;false&lt;/required&gt; &lt;rtexprvalue&gt;true&lt;/rtexprvalue&gt; &lt;/attribute&gt; &lt;/tag&gt; </code></pre> <p>And in the jsp:</p> <pre><code>&lt;%@ taglib prefix="thePrefix" uri="http://www.test.com/project/tags" %&gt; &lt;thePrefix:customUrl var="backUrl" value="list.html" includeAllParams="true" excludeParams="id"/&gt; </code></pre>
 

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