Questions tagged as 'jsp'

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how to use an update statement in java web?

I'm trying to modify data in a table with the update statement in java web, use a servlet to capture the data and send it to a java class called " adoproducto " with a method called " Modify "that receives two parameters id (type integer...
asked by 12.06.2018 / 18:06
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Passing parameters of a row of an html table with jsp

I would like to be able to edit the fields of a table from a list on a page jsp try { Connection conexion=null; ResultSet rs = null; conexion = DriverManager.getConnection("jdbc:mysql://localhost:3306/ticket...
asked by 11.06.2018 / 12:39
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Servelts, jsp error return true

I'm doing a data maintainer in jsp, so for the user validation part I use servelts to make calls to mysql. In the servelts of consultas.java I have this (it is to do reedireccion 1 is admin 2 is standard): public boolean comprobar (Stri...
asked by 10.06.2018 / 23:05
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display data from the database to a jsp table

help please the idea is to compile compile the class and in the table show me all the records that are in the database I do not know what I have wrong or what I need <%@page import="java.sql.Connection"%> <%@page import="java.sql.SQLE...
asked by 07.06.2018 / 23:06
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id can not be resolved to a variable

I would like to know why these errors come out: An error occurred at line: 383 in the jsp file: /cinema.jsp id cannot be resolved to a variable 380: %> 381: <tr> 382: <td> 383: <%=id%> 384: </td> 385:...
asked by 04.06.2018 / 20:15
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How to send data from several tables using sessions in JSP

I have a problem when I send data from a query to mysql with several tables, when sending them to the servlet, the servlet goes blank. I'm using model - view - controller In the project view I have a form where I sent the request the pag...
asked by 04.06.2018 / 23:36
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insert several checkbox in oracle using jsp and servlet

I need help in how to obtain and transform the values of several checkboxes to insert them in the database with a comma, for example: Seleccione sus frutas favoritas: <br> <input type="checkbox" name="frutas" value="manzana">...
asked by 04.06.2018 / 01:54
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How to display PDF from Java

I would like to know how I can show a pdf file generated in servlet and show it a new tab / window html or jsp, I still do not make the document but I do not see that it is very complicated. Is it possible to do something like what I have in...
asked by 08.06.2018 / 05:18
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Error 500 jsp Help

votar en contra accept <label required>Departamentos</label> <select class="form-control" onchange="buscarProvincia(this);" id="nIdeDptoNac"> <option value="${cmb.nIdeCompendio}">-...
asked by 31.05.2018 / 18:14
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How to call a java method from a button in jsp, help please!

Hello good afternoon friends, I hope and they are well, previously I had already asked in another occasion and because here I will write it again not to cause confusion, I have this java code that later I put it in a method that I did public...
asked by 30.05.2018 / 19:33