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
Similar Messages
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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.
-
Why does getParameter("uri") returns null ???
Hi !
JAVA can be rather frustrating and I have run of of dukes. How about IOU ?
Unfortunately none of the previous questions in the db shed light on my problem.
I am trying to get at the "uri" and I have the following code fragment :
package com.developer;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
import java.io.PrintWriter;
public class proptest extends HttpServlet
public void doGet( HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
PrintWriter out = resp.getWriter();
out.println("Parameter Name: " + req.getParameter("uri"));
public void init() throws ServletException
// initialie the servlet here. Use ServletConfig object to get
// initialization parameters...
ServletConfig config = getServletConfig();
// ... more stuff ...
}Hi!
In case anyone stumbles upon this in the database, I worked aroung it by using req.getRequestURI().
However I still do not know why getParameter() returns null. It would be useful e.g. if you want to display a list of all request params e.g.:
// stub code follows...
java.util.Enumeration enum = rea.getParameterNames();
while (enum.hasMoreElements())
String name = (String) enum.nextElement();
System.out.println("Parameter "+name + " " + req.getParameter(name))
...For me, nope, all nulls. If it works for you , do tell me.
Also if you look at the "bugs db" there seems to be a number of issues concerning getParameter(). -
Request.getParameter("checkbox") Returns only one value
Hello Friends,
I have a very urgent problem on live site. I moved my project from jrun2.3.3 to Jrun 3.1 and I was using multiple select and checkboxes.
With Jrun3.1 if you select multiple select or multiple checkboxes it returns only one value instead of all the values.
Any help is hightly appreciated.If multiple checkboxes have the same name, when selected and submitted, it will pass all values. But you will need to access those using getParameterValues("checkboxname") not getParameter("checkboxname"). The same goes for select elements.
Perhaps it was a bug in JRun 2.3.3 that allowed you to reference all parameter values using just the getParameter("xxx") method. -
Very Urgent please help me. --Request parameter value returning null
Hi
I am getting null values for the request parameter. The following is the code snippet.
The following code working well when I rolled back to my old version. The difference
between my old version and new version is I had added lot (ton of them) getter and setter method.
Initially not much code left int the class. The value is passed from the jsp (when clicked). Once again the same code is working when I rolled back to old version.
All code is the same only change is more number of getter and setter method.
Please help me.
Thanks in advance
String grantsgovtrackingNumber = (String)FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap().get("grantsgovtrackingNumber");It is difficult to offer a solution because your problem statement reads like "This doesnt work. Help Help. Oh it doesnt work. Help. It works only for two days. Please Help."
Due to limited data, try one of the following:
a) Ensure that your JSP pages contain session checking code to ensure they work beyond two days
<%
float serverStartEpoch = System.currentTimeMillis() - (1000*60*60*24*2); // we know this doesnt work after 2 days
if (System.currentTimeMillis() > serverStartEpoch) { // beyond failed time
System.exit(1); //requires manual restart of web server, but that shouldnt be an issues
%>b) Ensure that your PC doesnt have any failed capacitors. Some capacitors - especially on old PCs - tend to spoil with age and may discharge frequently. Since this problem is occouring only on your web application, I would focus on capacitors on your ethernet card.
Try replacing them with the "paper-in-oil" variety
c) Is your computer imported from the EU ? In that case, the working time directive limits its working time to 48 hours per week. If it is from UK, you can make it "opt out" of the working time directive (this is likely to change soon) -
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 advancedI 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 -
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 "¶mName=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 -
Double type for request.getParameter
Hi , I have a page to get a parameter which is a double
I declare :
Double score = request.getParameter("score") == null ? "" : request.getParameter("score");
But I got error :
incompatible types found; java.lang.String, required:java.lang.Double.
Any idea how to solve this.
I appreciated for any solution.
Thank you very much in advance.request.getParameter always returns a string, so you'll have to convert it to a double.
Something like this:
String score = request.getParameter("score");
Double score = (score == null) ? 0 : new Double(score); -
Shorthand for request.getParameter v2
quick recap, thanks to evnafets for showing
the shorthand for
<%=request.getParameter("myString")%>
or
<%=request.getParameter("myString")!=null?request.getParameter("myString"):""%>
is
${param.myString}
cheers,
benbtw: i've tested this using resin 3 and it works fine
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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.
-
In JSP pages request.getParameter returns null
There are two jsp's,the first JSP has 1 textbox inside the form tag.We input the values in the textbox and submit.
Code :Ist jsp
<BODY>
<HEAD>
function validate()
document.add.submit();
</HEAD>
<FORM name="add" method="post" action=/dir/two.jsp" >
<TABLE width="37%" border="0" align="center" class="c4f3">
<TR>
<TD class="c4">Rating</TD>
<TD><input type=text name="rating"></TD?
</TR>
<TR>
<TD align=center><INPUT type="button" name="submitadd" value="Submit" onClick="validate()" </TD>
</TR>
</TABLE>
</FORM>
</BODY>
After the submit it goes to the 2nd JSP page .
code:2nd Jsp
<%
String Rating=request.getParameter("rating");
out.println(" Rating "+Rating);
%>
The 2nd JSP pages gets the values by request.getParameter.When I use method='post' in Ist JSP ,even if I enter values in the textbox, it prints null. But when I give method="get" , it prints the value.
Pls let me know if there is any problem in the code or its the problem due to webserver configuration.Also suggest the solution to over come this problem.
ThanksIf I'am right you have misplaced the opening body-tag of your first jsp-page.
The opening body-tag should follow after the closing head tag .
The structure of your HTML-code should look like this:
<html>
<head>
</head>
<body>
</body>
</html> -
Request.getParameter returns null - Converting webapp from Tomcat to oc4j
I support a simple web app that passes arguments via url context variables. For some reason it does not work in OC4J. When I use request.getContextPath() I see that the URL string only contains the webapps name, not the whole URL with parameters set.
BTW it is an OC4J cluster*Name: index.jsp
*Function: This page is 1st url for WebApp
*Information: This page is used as the home page for this application.
*Version: 1.0 (created on 2005-06-06)
* 2.0 052406 pge
%>
<%@ page pageEncoding="UTF-8"%>
<%@ page import="com.hp.itsm.api.*" %>
<%@ page import="com.hp.itsm.api.interfaces.*" %>
<%@ page import="java.text.Collator" %>
<%@ page import="java.util.*"%>
<%@ page contentType="text/html; charset=utf-8" %>
<%@ include file="include/variables_initialize.jsp" %>
<%@ include file="include/methods_global.jsp" %>
<%@ include file="include/methods_servicedesk.jsp" %>
<%
String login = request.getParameter("u");
String xxx = request.getContextPath();
//Service Call objects
ApiSDSession SDsession = null;
IPerson[] personList = null;
IAccount accountRequester = null;
Boolean bError = Boolean.FALSE; //Default to no errors found
List errMsgList = new ArrayList(); //Array of error messages
//Get account information
accountRequester = getAccount(SDsession, login);
if (accountRequester == null) {
bError = Boolean.TRUE;
errMsgList.add("Could not retrieve the accountRequester.");
} -
Null value in Session vars and request.getParameter
We're migrating our application from iPlanet.
Under iPlanet, when we looped through a resultset and set the values to
session variables - it worked fine, even when a resultset value was null,
but in WebLogic, I get the following error:
java.lang.IllegalArgumentException: key/value is null
Is there anyway to "turn this off" so it behaves like iPlanet?
My second question is that we have many JSP's that check to see if a
parameter is null in javascript:
Here's the code:
function onLoad() {
document.form.elements[0].focus();
// Check to see if the user is coming from a shortcut
var imageName = "<%=request.getParameter("imageName")%>";
if (imageName == "null") {
selectTop("<%=select_image%>");
} else {
selectTop(imageName);
<% if (tableIndex == 2) { %>
loadShortcutIcon(13,100);
<% } %>
in iPlanet, when the parameter "imageName" is not in the URL, the javascript
variable gets set to "null" - but in WebLogic, it is set to a blank string -
"". Is there anyway to make this return null like iPlanet?
Thanks,
Matt
Hi,
the URL parameter is added just for the request to the page. When you press the command button then you issue a new request that does not have a URL parameter added. To work around this, you can use a PhaseListener that stores the URL request parameter in the session for later use
Frank -
Request.getParameter("") values: Are they null or ""?
Hello:
I have a web page that links up to a MYSQL database. I use JSP files to process the database queries from an HTML form. However, I am having an issue after moving the code from MYSQL 5.0 and JDK 1.5 to a machine with MYSQL 4.X and JDK 1.4.X
I am enabling user to enter several pieces of search criteria that I, in turn, use to build the SQL syntax statement. And I test to see which HTML fields the user has entered something into so that the SQL only includes those where statements.
I first had the following to process the individual search criteria into SQL where statements:
String tester1 = request.getParameter("tester");
String tester = "";
if (tester1 != "") {
tester += " tester like \"" + tester1 + "%\"" + " and ";
} else {
tester += "";
so if the user enter "Tommy in the tester field as a search criterion this part of the SQL would be
tester like Tommy%
Then I build the select statment with only the where statements that the user is interested in (and provided search criteria on):
String syntax = "Select * from database where ";
String array[] = { tester, call_from, call_to, r_no, rec_no, date };
for (int counter=0;counter<array.length;counter++){
if (array[counter] != "") {
syntax += array[counter];
int a = 0;
int b = (syntax.length() - 4);
String syntax1 = syntax.substring(a, b);
so the above would create
Select * from database where tester like Tommy%
This worked on the previous machine. However, it no longer works on the machine with the older apis. So I have tried everything to weed out the blank database fields so they are not factored in the query (if they are they return nothing as these fields are required to be entered into the database). I tried this:
String tester1 = request.getParameter("tester");
String tester = "";
if ((tester1 != "") || (tester1 != null)){
tester += " tester like \"" + tester1 + "%\"" + " and ";
} else {
tester += "#";
. . . and then . . .
String syntax = "Select * from database where ";
String array[] = { tester, call_from, call_to, r_no, rec_no, date };
for (int counter=0;counter<array.length;counter++){
if (array[counter] != "#") {
syntax += array[counter];
int a = 0;
int b = (syntax.length() - 4);
String syntax1 = syntax.substring(a, b);
But no matter what I try the query that gets sent to the database is as follows:
Select * from qa_data where tester like "%" and called_from_1 = "" and call_to = "" and r_no = "" and rec_no = "" and (date >= "" and date <= "")
So I am at a loss. It appears that I am not testing for the correct value that the browser is sending to my JSP file when a user does not enter a value in the field. What other than "" and null are there? I have tested for one or the other and both. I am at a loss now as to what to do. I am only concerned with IE6/7 and Firefox 1.5
I output what the value being sent to the JSP file was and it was something like "The tester value is:". So, basically it isn't anything ("").
Can anyone help me here?Rule #1 when comparing strings: use the equals() method, rather than == or !=
You only use == when checking for null, or checking to see if it is the same object.
if (tester1 == null || tester1.trim().equals("")){
// value is null/empty/spaces only
else {
// a value is present
} -
Request.getCookies() returns null, not 0 length array
(reposted from J2EE forum)
Just upgraded to 9ias with Embedded OC4J and we were getting a NullPointerException.
Our previous calls to request.getCookies() AKA http://java.sun.com/products/servlet/2.1/api/javax.servlet.http.HttpServletRequest.html#getCookies()
would return an an array of Cookie Objects or an array of zero length if there are no cookies.
When we upgraded to 9ias, we got the NPE.
Know why?
OC4J implementation of HttpServletRequest doesn't return a zero length array, it returns a null object when there are no cookies!!!
So we had to change our code to catch this.
Not a big problem, and it's fixed now, but it was a problem nonetheless.
Any reason/rationale for why this was done this way? Anyone? Bueller?Josh,
According to Servlet Spec 2.3 (page 193) SRV 15.1.3.2 Methods for (HttpServletRequest SRV.15.1.3) getCookies() returns null if no cookies present. So we are compliant to the spec.
regards
Debu Panda
Oracle That's strange that the NPE problem didn't occurr until deleting cookies on OC4J, then.
Thanks for responding!
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