Questions tagged as 'jsp'

Tagged questions
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Problem with pdf reports in jsp system

I have a JSP system that generates reports with the iext library. The problem is that in one of the pages of the system it does not have the background color in certain specific cells, while the other page does. I've already tried to put cell.se...
asked by 12.02.2018 / 20:24
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Problem showing special characters JAVA-Kdb

I extract the data from a DB through a connector, but when it comes to showing them in a list in a jsp, it shows them to me like this: How can I format the Strings when I take them out or what can I do to show them with their accents an...
asked by 24.01.2018 / 12:27
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Problem when redirecting CSS

I have a situation. I have a clients form in JSP with the name 'add_clients.jsp' that what it does is save data in the BD. Everything works very well, and when saving the data I want the page to redirect it to "table_clients.jsp" that contains t...
asked by 09.01.2018 / 17:14
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Error "getoutputstream () has already been called for this response" when opening pdf

I have this code that what it does is open a PDF that is in a route. When opening this file, it actually opens it, but in console it shows me the error of getoutputstream() has already been called for this response and it is annoying beca...
asked by 11.01.2018 / 22:14
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Why do not you return the data of the json?

I'm working with the autocomplete ui by categories, the data is sent normally and the query runs smoothly but in the search engine does not return the data of the json ... what I'm doing wrong and how can I fix it? <%@ include file="....
asked by 03.01.2018 / 17:05
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Upload files from java to Onedrive

Good morning, I am making an application to manage emails and I would like to know if from java there is a way to upload the attachments to an Onedrive account. Surely you can imagine, if so, that library should have to do so or where you could...
asked by 31.12.2017 / 13:19
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Error executing a prepared statement

I have an error when executing a method that returns the result of a query. The error he gives me is this:    'Warning: StandardWrapperValve [jsp]: Servlet.service () for   servlet jsp threw exception java.lang.NullPointerException at   com....
asked by 03.12.2017 / 18:27
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How to validate if the user of my query in servlet corresponds to the administrator and when it does not correspond ---- Here my code ----

String usuario = request.getParameter("usuario"); String contraseña = request.getParameter("pass"); Consultas co = new Consultas(); if (co.autenticacion(usuario, contraseña)){ HttpSession objsesion = request....
asked by 29.11.2017 / 14:17
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Error in Tomcat

That there are friends I have a problem with Tomcat when trying to run a Servlet where I have a query for a shopping cart send me the following error java.lang.UnsupportedOperationException: Not supported yet. Modelo.DetalleVenta.<init&...
asked by 30.11.2017 / 16:36
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Cancel sending form to servlet

Cordial greeting, I have problems trying to validate the form to send a form to the servlet, I'm going to validate by JavaScript, but even if I return false to the form on the onsubmit tag, the same form is processed in the servlet. I clarify...
asked by 08.11.2017 / 05:53