Servlets, request.getParameter()

How do I test a servlet in Jdeveloper
that wants a param from the calling URL, like
http://.../servlet?myparam=myvalue
via
val=request.getParameter("myparam");
I did already figure out, how to get init-Parameters, from
webtogo.ora
with
getInitParameter();
but that is not what I want, I want normal
parameters.
Running my servlet within jdev pops up
a page with WebAppRunner.html in my Browser,
that calls the servlet in jdev, I even tried handcoding my param there with no succes
so far.
Thanks for any help in advance.
Rx
null

Hi Ganesh,
Rx can u help me out on this.
I have an applet that access a servlet and fetches information
via a vector. The applet also sends the information via vector
back to the Servlet. But the servlet fails to write into the
database.
Thanks in advance!!!Thank you for your confidence,
I'm sorry for not being able to answer your question right away.
* You might post some code examples,
hopefully reduced to the minimum of what is
needed to understand your problem.
* You should consider opening a new thread
as your problem seems only loosly related
to mine.
* I am just an Oracle JDeveloper user having
gained some experience with jdev and the bc4j framework, but without the insight
of the sourcecode.
* You can however expect the people from
the Oracle JDeveloper Team to be more
responsive to user questions. - My general
experience is, that the responsiveness
in open source projects forums/mailing lists/newsgroups is much better. - They should be interested in their user's problems.
Rx
null

Similar Messages

Request.getParameter() values in servlet? Urgent

String str=request.getParameter();
I am facing a problem when i submit the arabic values from hidden form fields using javascript.
In servlet when i tries to retrive the arabic values stored in the session, it displays only
garbage values(ie. ?????????).
How to solve this problem?
Please clarify and if possible give some samples.
Thanks & Regards,
Govindaraman

Hi Govindaraman,
in O'Reilly's Servlet book in the internationalization section it describes how. You have to change the String returned into bytes using the proper enconding, then back into a String to it will convert to Unicode.
The basics are this:
String parameterName="your param name";
String encoding = "your charset encoding on the page";
String value = request.getParameter(parameterName);
value = new String(value.getBytes(), encoding);
value is now a Unicode string that should be correctly interpreted.
You can use new String( oldString.getBytes(), encoding) to convert between charsets.

Retriving only hidden parameters from request.getParameter

Hi,
I want to retrive only the hidden parameters from previous JSP page into current JSP page. The problem here is that my hidden parameters in privious page are dynamically generated (parameter names are decided based on values retrived from the database) and I cannot retrive them using "request.getParameter(<parametername>)"
Can I find the parameter type (i.e. text box, text area, checkbox, radio or hidden) from the request.getParameter() or request.getParameterNames() methods? or is there any other way to find it.
Thanks in advance for any help

You can use the getParameterNames() or getParameterMap() methods from javax.servlet.ServletRequest to get all the parameters in the request. Even if they're dynamically generated, and you don't know the names in advance, these methods will ferret them out.
getParameterMap() returns name String, values String [] pairs, so you'll have to work with String arrays to get the input out. It's got to be that way to accomodate checkboxes and other HTML form elements that can send more than one value for a given name.
I prefer getParameterMap, because I don't like using Enumerations as much. - MOD

In Portal, request.getparameter return NULL (Sample Monthcalendar)

I used the sample monthcalendar. When i used it without integrated in portal, i can change month by month with ">>" button.
In the JSP File, there is a call to the P_CALDATE parameter
String l_inputDate = request.getParameter("P_CALDATE"); // Input Date.
When i put this JSP file as an URL Portlet, i can't navigate month by month. the function request.getParameter("P_CALDATE") return NULL, but in the URL i have the parameter:
http://hddms220.cg63.fr/servlet/page?_pageid=54,58,56&_dad=portal30&_schema=PORTAL30&P_CALDATE=2002-05-01.
Someone have an idea
Thanks in advanced

I have tested the sample with JSERV, and all works fine.
But if i wan't use OC4J/ORION to display a portlet how can i do it.
Thanks in advanced

Submitting request.getParameter value on page submit

I am getting the value from the request parameter as under
<%
String mod = request.getParameter("mod");
%>
Now i want this mod value to be submitted as page submits. For that i used:
<h:inputHidden id="mod_field" value="" />
Now the question is how to pass the above mod value using this hidden input? and secondly how to bind it with the property in the backing bean (say the name of my backing bean is bean.navigation) so that i can access and use the value.

Hay this exception has again started showing me up.
exception
org.apache.jasper.JasperException: javax.servlet.jsp.JspException: javax.faces.FacesException: javax.faces.el.ReferenceSyntaxException: param.mod
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
     com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
     com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
     com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
root cause
javax.servlet.ServletException: javax.servlet.jsp.JspException: javax.faces.FacesException: javax.faces.el.ReferenceSyntaxException: param.mod
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:854)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
     org.apache.jsp.tsheetRcode_jsp._jspService(tsheetRcode_jsp.java:344)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
     com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
     com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
     com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
root cause
javax.faces.el.EvaluationException: javax.faces.FacesException: javax.faces.el.ReferenceSyntaxException: param.mod
     com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:206)
     com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:154)
     javax.faces.component.UIOutput.getValue(UIOutput.java:147)
     com.sun.faces.renderkit.html_basic.MenuRenderer.getCurrentSelectedValues(MenuRenderer.java:670)
     com.sun.faces.renderkit.html_basic.MenuRenderer.renderOption(MenuRenderer.java:549)
     com.sun.faces.renderkit.html_basic.MenuRenderer.renderOptions(MenuRenderer.java:525)
     com.sun.faces.renderkit.html_basic.MenuRenderer.renderSelect(MenuRenderer.java:481)
     com.sun.faces.renderkit.html_basic.MenuRenderer.encodeEnd(MenuRenderer.java:430)
     javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:712)
     javax.faces.webapp.UIComponentTag.encodeEnd(UIComponentTag.java:616)
     javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:539)
     com.sun.faces.taglib.html_basic.SelectOneMenuTag.doEndTag(SelectOneMenuTag.java:505)
     org.apache.jsp.tsheetRcode_jsp._jspx_meth_h_selectOneMenu_0(tsheetRcode_jsp.java:449)
     org.apache.jsp.tsheetRcode_jsp._jspService(tsheetRcode_jsp.java:263)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
     com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
     com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
     com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
     javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)

Unable get complete filepath from jsp page using request.getParameter()

Hey all,
i am actually trying to get the selected file path value using request.getParameter into the servlet where i will read the (csv or txt) file but i dont get the full path but only the file name(test.txt) not the complete path(C:\\Temp\\test.txt) i selected in JSP page using browse file.
Output :
FILE NAME : TEST
FILE PATH : test.txt
Error : java.io.FileNotFoundException: test.txt (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at java.io.FileReader.<init>(FileReader.java:55)
at com.test.TestServlet.processRequest(TestServlet.java:39)
at com.test.TestServlet.doPost(TestServlet.java:75)
JSP CODE:
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>DEMO SERVLET</title>
</script>
</head>
<body>
<h2>Hello World!</h2>
<form name="myform" action="TestServlet" method="POST"
FILE NAME : <input type="text" name="filename" value="" size="25" /><br><br>
FILE SELECT : <input type="file" name="myfile" value="" width="25" /><br><br>
<input type="submit" value="Submit" name="submit" />
</form>
</body>
</html>
Servlet Code :
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, FileNotFoundException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
String filename = request.getParameter("filename");
out.println(filename);
String filepath = request.getParameter("myfile");
out.println(filepath);
out.println("<html>");
out.println("<head>");
out.println("<title>Servlet TestServlet</title>");
out.println("</head>");
out.println("<body>");
out.println("<h1>Servlet TestServlet at " + request.getContextPath() + "</h1>");
if (filepath != null) {
File f = new File(filepath);
BufferedReader br = new BufferedReader(new FileReader(f));
String strLine;
String[] tokens;
while ((strLine = br.readLine()) != null) {
tokens = strLine.split(",");
for (int i = 0; i < tokens.length; i++) {
out.println("<h1>Servlet TestServlet at " + tokens[i] + "</h1>");
out.println("----------------");
out.println("</body>");
out.println("</html>");
} finally {
out.close();
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
Needed Output :
FILE NAME : TEST
FILE PATH : C:\\Temp\\test.txt
Any suggestions Plz??

As the [HTML specification|http://www.w3.org/TR/html401/interact/forms.html] states, you should be setting the enctype to multipart/form-data to be able to upload files to the server. In the server side, you need to process the multipart/form-data binary stream by parsing the HttpServletRequest#getInputStream(). It is a lot of work to get it to work flawlessly. There are 3rd party API's around which can do that for you, such as [Apache Commons FileUpload|http://commons.apache.org/fileupload] (carefully read the User Guide how to use it).
You can also consider to use a Filter which makes use of the FileUpload API to preprocess the request so that you can continue writing the servlet code as usual. Here is an example: [http://balusc.blogspot.com/2007/11/multipartfilter.html].

In WL6.1 request.getParameter returns NULL for URL parameters that exist

          With the following URL, I get different results between WebLogic 4.5.1 and WebLogic
          6.1:
          http://phx-kmccarthy.medspecialists.net/tsweb/ParametersTest.jsp?apple=macintosh&tree&dog&country=USA
          Weblogic 6.1 returns:
          query string = apple=macintosh&tree&dog&country=USA
          apple = macintosh
          tree = null
          dog = null
          country = USA
          WebLogic 4.5.1 returns:
          query string = apple=macintosh&tree&dog&country=USA
          apple = macintosh
          tree =
          dog =
          country = USA
          here is the jsp...
          <%--
          * ParamtersTest.jsp which shows that empty parameters are ignored in WebLogic
          6.1
          --%>
          <%
          String apple, tree, dog, country;
          apple = request.getParameter("apple");
          tree = request.getParameter("tree");
          dog = request.getParameter("dog");
          country = request.getParameter("country");
          out.println("<br>query string = " + request.getQueryString());
          out.println("<br>apple = " + apple);
          out.println("<br>tree = " + tree);
          out.println("<br>dog = " + dog);
          out.println("<br>country = " + country);
          %>
          From the documentation on the getParameter() method:
          Returns the value of a request parameter as a String, or null if the parameter
          does not exist.
          In my opinion, not existing and being empty are different. Also, every other web
          application environment we've dealt with (including WebLogic 4.5.1) treats them
          as different. If the parameter doesn't have a value, (i.e. ...&tree&dog&...) then
          getParameter() returns the empty string, not null.
          As a result of this we have JSPs that break when running on 6.1.


Found the solution at last. Tomcat servlet container can't handle the chunked transfer-encoding that the J2ME Wireless Toolkit uses when you call outputstream.flush() in midlet. Using outputstream.close() instead of outputstream.flush() will avoid this problem for small requests. For all the codes in the articles on Http Post in Wireless Forum, don't use outputstream.flush() and it will run perfectly - Servlet's request.getParameter(parameterName) will work fine in doPost method.

Request.getParameter() always returns null

I have a html file and am trying to retrieve the values from a formin my servlet.
here is the html code:
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<h1><b>Add DVD</b></h1>
</head>
<body>
<form action="add_dvd.do" method="POST">
Title:<input type="text" name="title" />
Year:<input type="text" name="year" />
Genre: <select name='gselected'>
<option value='Sci-Fi'>Sci-Fi</option>
</select>
or enter new genre:<input type="text" name='gentered' value="" />
<input type="submit" value="Add DVD" />
</form>
</body>
</html>
and here is the servlet code:
public class AddDVDServlet extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// System.out.println("in AddDVDServlet post method");
List errorMsgs = new LinkedList();
//retrieve form parameters
try{
String title = request.getParameter("title").trim();
String year = request.getParameter("year").trim();
*String gentered = request.getParameter("gentered");
String gselected = request.getParameter("gselected");
String genre="";
if("".equals(gentered))
genre = gselected;
else
genre = gentered;
// System.out.println("parameter retrieved");
if(!year.matches("\\d\\d\\d\\d"))
// System.out.println("year not 4 digit long");
errorMsgs.add("Year must be four digit long");
if("".equals(title))
// System.out.println("title not entered");
errorMsgs.add("Please enter the title of the dvd");
if("".equals(genre))
// System.out.println("genre not valid");zdf
errorMsgs.add("Enter genre.");
if(! errorMsgs.isEmpty())
//System.out.println("errors in entry ");
request.setAttribute("errors",errorMsgs);
// System.out.println("error attribute set in request");
RequestDispatcher rd = request.getRequestDispatcher("error.view");
rd.forward(request, response);
return;
//create DVDItem instance
DVDItem dvd = new DVDItem(title,year,genre);
request.setAttribute("dvdItem",dvd);
RequestDispatcher rd = request.getRequestDispatcher("success.view");
rd.forward(request, response);
catch(Exception e){
errorMsgs.add(e.getMessage());
request.setAttribute("errors",errorMsgs);
RequestDispatcher rd = request.getRequestDispatcher("error.view");
rd.forward(request, response);
e.printStackTrace();
System.out.println("exception:"+e);
why does getParameter always return null??? whats wrong?

I don't know. However, I suspect that because you have a tag with the same name as 'title', its causing a name conflict. Chnage the name to something else. If it works, then that's the likely explaination.

Request.getParameter problem

Did any one faced the problem please provide me a solution I am converting a project to WebSphere. using J2EE jsp 1.1 from NAS,jsp 0.92
I have a jsp page and I am submitting the form:
Test.jsp
<body>
<form name="frm" method="post" action="TestServlet">
<INPUT type="CHECKBOX" name="CKBXVCH23" value="A" checked>A
<INPUT type="CHECKBOX" name="CKBXVCH23" value="B" checked>B
<INPUT type="CHECKBOX" name="CKBXVCH23" value="C" checked>C
</form>
</body>
TestServlet:
when i do String str=request.getParameter("CKBXVCH23")
I am getting only str="A"
It suppose to give str=A;B;C because I have selected all the three items Its working fine in iPlanet, jsp 0.92
can anyone know whats the diffenrece.???
Thanks
zakir hussain

If you change the post to a get so you can see what is passed to the servlet you'll see the following parameters are passed:
CKBXVCH23=A&CKBXVCH23=B&CKBXVCH23=C
You need to use the
public java.lang.String[] getParameterValues(java.lang.String name)
mehod to get an array of all the values associated with "CKBXVCH23"

Request.getParameter() not working correctly for Check Boxes!

Hi,
I am writing my own custom form action in cq5.4 and I need to access the fields of my form. I have a checkbox component on my form named 'cbox' and now I want to access it.
So this is the code I'm writing in the JSP
String name = request.getParameter("cbox");
But when I fill up the data on the form and submit it.. I only get the first element of the checkbox which I had selected. So suppose if the checkbox was having some options..
a
b
c
d
and if I selected b and d then I only get 'b'.
Actually the type of the name variable must be String Array. But when I do..
String[] name = request.getParameter("cbox");
//it gives me compilation error saying cannot convert from String to String[]
I cannot understand whats happening here. Can someone help me? How do I find out that which options has the user checked?
Thanks!

I think you are looking for getParameterValues().
If you read http://docs.oracle.com/javaee/1.3/api/javax/servlet/ServletRequest.html#getParameter(java. lang.String) and http://docs.oracle.com/javaee/1.3/api/javax/servlet/ServletRequest.html#getParameterValues (java.lang.String), you'll see the behavior you are seeing is as-documented.

Request.getParameter("_ROWKEY") returns null in JDev 3.2

My SubmitEditForm.jsp uses a bean which inherits from the EditCurrentRecord data web bean. In JDeveloper 3.1 'request.getParameter("ROWKEY")' in this JSP returns the rowkey for the record being edited, but in JDeveloper 3.2 'request.getParameter("_ROWKEY")' returns null. No modifications have bean made to the application - the working JDeveloper 3.1 app has only been compiled in JDeveloper 3.2. Can anyone help please?

Hi,
This exception is raised when the multipart/form-data parser has read the number of bytes specified by the Content-Length HTTP header, or tries to read past the end of the input stream, but has not parsed to the end of the message. As implied by the error text, this can happen for a couple of reasons.
Although its unlikely, it is possible for a client to sent an incorrect Content-Length header. However, we've so far only seen this with a user-written HTTP client. We have yet to see a browser send the wrong value.
The usual reason for this error is if a user hits the stop button while submitting a form. If the browser has already sent the HTTP header, including Content-Type, then the parser will try to read the entire message. However, this is going to fail, as the browser stops sending the request as soon as the stop button is pressed.
Finally, there is one more possible reason for this error, and that is if the request is somehow being 'munged' in some way between the browser and the servlet container.
To help us better understand what is happening here, can you supply
the following information:
- Does this problem happen consistently or occur only randomly?
- When it does happen, is it repeatable, or does it go away if the user hits the submit button again?
- Does it happen with certain HTML forms, any HTML form, or is it specific to the data entered into a pariticular form?
- Does it happen with any browser, or a specific version and/or implementation?
- What is your network configuration? For example, does the problem occur only when going through a proxy server or fire wall.
- Does it depend on network load? For example, does it happen only at heavy load times?
- What is you web server configuration, on what platform are you running it, and what JDK version are you using?
As I'm writing this, the TAR system is down for upgrades - my apologies if you've already supplied this information.
Regards,
Simon
null

Request.getParameter is NULL from window.open form submit

Hi all,
We have one portlet application where a jsp page has a link which opens as a child window using the window.open function in javascript.
It has a form and some textboxes with a save submit button.When the save button is clicked the portlet processAction is called but when i try to set the renderrequest all the request.getParameters are null .I have tried both the ActionRequest and HttpServletRequest and both have nul values.
As a result me Save is failing since the request.getparametrs are null.I added the "save" as part of form action URL and its getting passsed but the other, i am unable to fetch.
My Form action is : <form name="saveEntries" id="saveEntries" action="<portlet:actionURL secure="true"/>&action=save&_pageLabel=ABC" method="post">
My process action code is :
Enumeration<String> parameters = request.getParameterNames();
          while(parameters.hasMoreElements()) {
               String parameter = parameters.nextElement();
               String[] values = request.getParameterValues(parameter);
               if(values != null && values.length > 1){
                    response.setRenderParameter(parameter, values);
               } else {
                    response.setRenderParameter(parameter, request.getParameter(parameter));
                    if(request.getParameter(parameter)!=null && "save".equalsIgnoreCase(request.getParameter(parameter))){
                         HttpServletRequest httpRequest = (HttpServletRequest) request.getAttribute("javax.servlet.request");
                         Enumeration parameterNames = httpRequest.getParameterNames();
                         Enumeration<String> httpparameters = parameterNames;
                         while(httpparameters.hasMoreElements()) {
                              String httpparameter = httpparameters.nextElement();
                              String[] httpvalues = httpRequest.getParameterValues(httpparameter);
                              if(httpvalues != null && httpvalues.length > 1){
                                   response.setRenderParameter(httpparameter, httpvalues);
                              } else {
                                   logger.debug("----------------->:ApproveTime else processAction = :Getting HTTP :parameter:"+parameter);
                                   logger.debug("----------------->:ApproveTime else processAction = :Getting HTTP :request.getParameter(parameter):"+request.getParameter(parameter));
                                   response.setRenderParameter(httpparameter, httpRequest.getParameter(httpparameter));
Any help is highly appreciated.

Hello,
One potential reason why it isn't working for you is that the Java Portlet specifications (JSR168 and JSR286) don't allow URLs to be manipulated once they are created with a a portlet:xxxURL tag. The reason for this is that the portlet container needs to be able to rewrite the URLs to properly go back through the portal framework (or over WSRP if running the portlet remotely) and to encode all the parameters needed. The portal framework could even change it from a URL to a Javascript action, where simply appending extra "&paramName=someValue" onto the end of the generated URL won't work. So this:
<form action="<portlet:actionURL secure="true"/>&action=save&_pageLabel=ABC" method="post">isn't legal by the portlet specification-- if you want to add parameters to the actionURL, you can by doing this:
<form action="<portlet:actionURL secure="true"><portlet:param name="action" value="save"/><portlet:param name="_pageLabel" value="ABC"/></portlet:actionURL>" method="post">which will add the parameters to the URL in a way that will always work with the portal framework.
One other thing to note- it looks like you're just trying to copy all of the action parameters in the request into render parameters in the response; this can be done much easier like this:
response.setRenderParameters(request.getParameterMap());Kevin

JSP form values lost upon servlet request (RequestDispatcher)

Hello,
I have a query screen (jsp) that calls a servlet and gets results. However, although the results or errors display just fine (I do a setAttribute for them), I lose the initial values in the query form (values that the user input - which are stored in the request object). Shouldn't those values be maintained and displayed, since I'm using the RequestDispatcher and thus, I should have the same request object? Thank you, C Turner
*****My JSP (the related code)*****
<jsp:useBean id="form" class="com.foo.ActivityBean" scope="session">
<jsp:setProperty name="form" property="*"
</jsp:useBean>
<HTML>
<BODY>
<FORM ACTION="ActivityFormHandler" METHOD="POST">
<P><B>From Date</B>
<INPUT TYPE="TEXT" NAME="fromDate" SIZE="9" VALUE="<jsp:getProperty name="form" property="fromDate"/>">
<P><B>To Date</B>
<INPUT TYPE="TEXT" NAME="fromDate" SIZE="9" VALUE="<jsp:getProperty name="form" property="toDate"/>">
*****Java from my HttpServlet, ActivityFormHandler (acting as a formhandler)*****
if (errors.size() == 0) {
ActivityBean myActivityBean = new ActivityBean();
myActivityBean.setBeanQueryValues(acctNumber, department, fromDate, toDate);
Vector resultsVector = null;
try {
resultsVector = myActivityBean.executeQuery();
} catch (CreateException ce) {
errors.add("There was a problem retrieving the requested data from the database.");
request.setAttribute("results", resultsVector);
} else {
//Data is not okay.
String[] errorArray = (String[])errors.toArray(new String[errors.size()]);
request.setAttribute("errors", errorArray);
RequestDispatcher rd;
rd = getServletContext().getRequestDispatcher("/public_html/ActivityQuery.jsp");
//rd.forward(request, response);
rd.include(request, response);

For those interested in my question, here's what I figured out.
Instead of:
<INPUT TYPE="TEXT" NAME="fromDate" SIZE="9" VALUE="<jsp:getProperty name="form" property="fromDate"/>">
Use:
<INPUT TYPE="TEXT" NAME="fromDate" SIZE="9" VALUE="<%out.print(request.getParameter("fromDate"));%>">
This allows the input field to persist the query value instead of blanking it out when the results are displayed. -ct

Request.getParameter(): special character handling problem

Hello, there:
This should be an easy question for the gurus in here.
I use a string attached to the url as the parameter string, which includes spaces. the system automatically converts them to %20, but when I receive them in my servlet using request.getParameter, a special character, Â appears; I couldn't proceed with it.
I suppose this is a common problem but seems that I didn't find topics about it on this forum.
So anyone can help? Any encoder/decoder APIs to handle it?
Thanks a lot,
Sway

hi,
escape can solve ur problem
use js function to submit form like
function subForm()
var any_spcl_value ="kdfhjdf$%@#$% 2FGSFG @%@#%@# V";
mainForm.action = "index.jsp?value="+ escape(any_spcl_value);
mainForm.submit();
and use request.getParameter("value");
u ll get kdfhjdf$%@#$% 2FGSFG @%@#%@# V as it is.
AE

Return value of request.getParameter()

Is the value returned by request.getParameter() always decoded? I tested with Tomcat on Firefox/IE and it looks like the answer is yes, although I don't find any relevant information in the Servlet API doc.
So no need to use URLDecode to decode parameter values?

Thanks man. Got it.

Servlets, request.getParameter()

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