class: org.apache.taglibs.standard.tag.common.core.ParamSupport method: doEndTag() This method uses deprecated URLEncoder.encode(value): parent.addParameter(URLEncoder.encode(name), URLEncoder.encode(value)); which uses deafult system encoding, which can be different from page encoding. This leads to incorrect encoding of URL string.
*** This bug has been marked as a duplicate of 16912 ***