servlet getparameter null

getParameter public java.lang.String getParameter(java.lang.String name) Returns the value of a request parameter as a String, or null if the parameter does not exist. String paramName2 =request.getParameter(paramName2); Please help RE: > I have a parameter,whose value I am passing from jsp to servlet > > but it is passing Null > > JSP code: > > function aboutMeUpdate(trialno) > Servlets Getting POST Parameters??? July 2007 in Java Server Pages Hi, I'm writing a servlet that handles the action from a form When the form uses the GET (I don't know why) and since the getParameter is always returning null, doing a toString just causes a NullPointerException. Java » Java packages » javax.servlet.jsp » Java Server Pages Input Getting a Request Parameter in a JSP Page <% if (request.getParameter(name) == null) { out.println(Please enter your name.); } else { out.println (Hello <b. Message view « Date » · « Thread » Top « Date » · « Thread » From: tiago_mendo @portugalmail.pt: Subject: Re: HTTP Servlet - getparameter returns NULL for % characte.One of the aspects of Servlets is reading the HTML/Applet data sent by the client like login data etc For this, three methods exist in ServletRequest interface - getParameter(String), getParameterNames() and getParameterValues(String). All that is required is a null check If a user did not fill in a field, the request.getParameter(parameterName) will equal null. (FormDisplayServlet.java:219) javax.servlet.http.HttpServlet.service(HttpServlet.java:709) javax.servlet.http s will be null if the request does not contain params[n] In that The problem is that if getParameter() cannot find the parameter it returns null Then the code. Strange problem I have an html form that sends a POST request to a servlet, but all the request.getParameter() requests are returning null Here's a snippet. This example illustrates about how to get parameter from jsp page in your servlet Get Parameter Name From Servlet Request This example illustrates about how to get parameter from jsp page in your servlet.minolta 1611 vista driverServlet request getparameter's performance stackoverflow.com I noticed that my app is very slow sometimes, so I've done some tests Servlet request.getParameter() returning null stackoverflow.com im having a problem with JSP + java. Hi, I am invoking a servlet from jsp using post method on a websphere application server6 I have two text boxes (userid & password) on jsp whose. Then this calls my servlet which is coded as below: package Client_Controller; import CommonData.ComData; import java.io.File; import java.io.FileInputStream; import java.io.IOException; Servlet request.getParameter() always returning null. Demos and Usage of javax.servlet.ServletRequest.getParameter(String name) Java Examples>>javax.servlet>>javax.servlet.ServletRequest>>getParameter(String name) 1: (request.getParameter (TAGLIB_INVOKE) != null) 10: 11: 12: protected void writeAttributes (MBeanServer server, String objName. I am using applets embedded in html and applets forwards to servlet In my Login Servlet req.getParameter(Login) returns null at a.My question is, when my application calls my servlet with some parameter x=null , and then in the servlet container I do a check if (request.getParameter(x)== null) - will this return true? getParameter java.lang.String getParameter(java.lang.String name) Returns the value of a request parameter as a String, or null if the parameter does not exist. ServletRequest's getParameter() method is used to retrieve the request parameter i.e input element values of html form. Hi, This webpage contains content related to Java Servlets If question related to request.getParameter() returns a null value in the servlet is not helpful or you didn't find the question or answer you were looking for then you can ask a new question through contact form. I'm trying to retrieve a selected value from a jsp in a servlet The values displayed in the option are from ArrayList of Item objects (with variables ID, name, descript, price, quant).