Passing JavaScript Var ---- to java method....URGENT...PLEASE ...HELP

Question

I am doing a simple java Servlet example...
I have value that is assigned in a one of the javascript function().
Below i have the function where i get the columnValue....
i want to use that value in the doPost method in my Servlet1 class...
Can someone please tell me how i can do this...
function getGridValue(oColumn) {
     var oRow;
     var oCell;
     var lIdx;
     var columnValue;
     try {
          lArrayLength = GridArrays.length;
          if (lArrayLength < 1) {
               return false;
          for (lLoop=0; lLoop<lArrayLength; lLoop++) {
               oRow = GridArrays[lLoop];
               oCell = oRow[0];
               columnValue = oRow[oColumn];
               if (oCell.SortVal == 1) {
                    alert(columnValue.SortVal);
                    break;
                    return true;     
     catch(exception){
          if(exception.description == null){
               alert("GridSerVal: " + exception.message);
          else{
               alert("GridSetVal: " + exception.description);
Servlet1 class
public void doPost(HttpServletRequest request, HttpServletResponse res)
throws IOException, ServletException
String xParameterName = null;
String xParameterValue = null;
PrintWriter out = res.getWriter();
PolicyInformation policyInformation = null;
Enumeration e = request.getParameterNames();
while (e.hasMoreElements()) {
xParameterName = (String) e.nextElement();
xParameterValue = request.getParameter(xParameterName);
if ((xParameterValue.trim().length() !=0 )){
if(xParameterName.compareTo("firstnameTextfield")==0){
else if(xParameterName.compareTo("lastnameTextfield")==0){
else if(xParameterName.compareTo("policynumberTextfield")==0){
StringBuffer outstring = new StringBuffer();
outstring.append(createScript.policyReCreateSearchForm(xParameterValue));
outstring.append(createScript.setTopPart());
outstring.append(createScript.getHeader());
Vector policyInformationVector1 = getPolicyInformation(res, xParameterValue);
Iterator iter = policyInformationVector1.iterator();
PolicyInformation aPolicyInformation = null;
while(iter.hasNext()){
Object[] data = new String[policyInformationVector1.size()];
for (int ii=0; ii < data.length; ii++){
int rowNum = ii + 1;
aPolicyInformation = (PolicyInformation) iter.next();
f = aPolicyInformation.getFirstName();
l = aPolicyInformation.getLastName();
d = aPolicyInformation.getDOB();
s = aPolicyInformation.getSSN();
p = aPolicyInformation.getPolicyNumber();
m = aPolicyInformation.getMiddleName();
pid = aPolicyInformation.getPid();
outstring.append(createScript.setRowValue(f,m,l,p,pid,d,s,rowNum));
outstring.append(createScript.setRowValue1());
outstring.append(createScript.getBottom());
out.println(outstring.toString());
else if(xParameterName.compareTo("ssnTextfield")==0){
THis is where i want to get the value from the javascript and use that value to run a query...
// checks if the ViewSubmitButton is submitted....
if(xParameterName.compareTo("viewSubmitButton") == 0){
} // end of while(e.hasMoreElements())

Answer 1

I'm not quite sure what your problem is specifically, but at first glance I can tell you that you can't access the response object until you are done with your request object. Make sure you do everything you want to do with the request object and then when you are done make your call to res.getWriter() and send your output.