How can i getParameter then put inti DOM...

<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" errorPage="" %>
<%@ page import="javax.xml.parsers.*" %>
<%@ page import="org.w3c.dom.*" %>
<% String getCate = request.getParameter("category"); %>
<html><head>
<title>DOM Parser</title>
</head>
<body>
<% // Create the file object we will read from
File f = new File("C:/Program Files/Tomcat 6.0/webapps/wsd/recipes/index.xml");
// Create an instance of the DOM parser and parse the document
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
Document doc = db.parse(f);
// Begin traversing the document
traverseTree(doc, out);
%>
<%!
//Get parameter from index to look up recipes follow category
private void traverseTree(Node currnode, JspWriter out) throws Exception {
 // If the current node is null, do nothing
 if(currnode == null) {
 return;
 //out.println("<blockquote>");
 // Find the type of the current node
 int type = currnode.getNodeType();
 // Check the node type, and process it accordingly
 switch (type) {
 case Node.DOCUMENT_NODE:
 //out.println("DOCUMENT");
 traverseTree (((Document)currnode).getDocumentElement(), out);
 break;
 case Node.ELEMENT_NODE:
 //String elementName = currnode.getNodeName();
 //if (elementName.compareTo("title") == 0) {
 // out.println("ELEMENT: [" + elementName + "]");
 //if (currnode.hasAttributes()) {
 // NamedNodeMap attributes = currnode.getAttributes();
 // for (int i=0; i < attributes.getLength(); i++) {
 // Node currattr = attributes.item(i);
 // traverseTree(currattr, out);
 NodeList childNodes = currnode.getChildNodes();
 if(childNodes != null) {
 for (int i=0; i < childNodes.getLength() ; i++) {
 traverseTree (childNodes.item(i), out);
 break;
 case Node.ATTRIBUTE_NODE:
 // String attributeName = currnode.getNodeName();
 // String attributeValue = currnode.getNodeValue();
 // out.println("ATTRIBUTE: name=[" + attributeName +
 // "], value=[" + attributeValue + "]");
 break;
/* case Node.TEXT_NODE: {
* Node parent = currnode.getParentNode();
* if (parent != null) {
* Node grandParent = parent.getParentNode();
* if (grandParent != null) {
* if ((grandParent.getNodeName().equals("track")) && (parent.getNodeName().equals("title"))) {
* String text = currnode.getNodeValue().trim();
* if (text.length() > 0) {
* out.println("" + text + "");
* break;
 case Node.TEXT_NODE: {
 Node parent = currnode.getParentNode();
 if (parent != null) {
 Node grandParent = parent.getParentNode();
 if ((grandParent.getNodeName().equals("recipe")) && (parent.getNodeName().equals("category"))) {
 String compare = currnode.getNodeValue();
 if (compare.equals(getCate)) {
 String text = currnode.getNodeValue().trim();
 if (text.length() > 0) {
 out.println(""+currnode.getPreviousSibling()+" ");
 out.println(text+" ");
 out.print(currnode.getNextSibling()+"");
 break;
//out.println("</blockquote>");
%>
<hr />
</body></html>
<%@page import="java.io.*, java.lang.*, java.net.*"%>I get a parameter from an html file (on line 4)
<% String getCate = request.getParameter("category"); %>then use getCate as a String to compare with get current Node in DOM to print out
String compare = currnode.getNodeValue();
 if (compare.equals(getCate))like this. But there is a problem...
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 110 in the jsp file: /process.jsp
getCate cannot be resolved
107: if ((grandParent.getNodeName().equals("recipe")) && (parent.getNodeName().equals("category"))) {
108:
109: String compare = currnode.getNodeValue();
110: if (compare.equals(getCate)) {
111: String text = currnode.getNodeValue().trim();
112: if (text.length() > 0) {
113: out.println(""+currnode.getPreviousSibling()+" ");
Stacktrace:
 org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
 org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
 org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:316)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
 org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
I tried to to get it above the traverse tree but it didn't help either...
What should i do.
Thx

1 more. when i put it above traverse tree, it appear is cannot resolve
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 24 in the jsp file: /process.jsp
request cannot be resolved
21:
22: <%!
23: //Get parameter from index to look up recipes follow category
24: String getCate = request.getParameter("category");
25:
26:
27: private void traverseTree(Node currnode, JspWriter out) throws Exception {
Stacktrace:
 org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
 org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
 org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:316)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:294)
 org.apache.jasper.compiler.Compiler.compile(Compiler.java:281)
 org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
 org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)
 org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
 org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
 javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
<%!
//Get parameter from index to look up recipes follow category
String getCate = request.getParameter("category");
private void traverseTree(Node currnode, JspWriter out) throws Exception {
 // If the current node is null, do nothing
 if(currnode == null) {
 return;
...

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