Servlets :: Form Data Exceeding 10MB Gradually Which Is Not Being Accepted By Server
Jul 17, 2014
I am currently working on a module where huge amount of data needs to be sent to the weblogic server. The limit on Weblogic-> Server - > Protocols is 10MB.
The huge data is coming when i try to add more than 20 rows to the Ajax request.
There are possible two solutions for this
1) Increase the limit on Weblogic server to 1Gb which might lead to server crash when two or more users are trying to add 100 records at the same time.
2) Send memory in the form of chunks of (length of a row) every time I add a row. Store this in session and upon form submission retrieve from session. This cannot work if there are more than 20 users doing load testing as increase in session data decrease performance gradually.
I need that data passed to my server without any performance or errors.Currently its showing weblogic.socket.MaxMesssageSizeExceededException and RequestURI too long errors.
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Jan 8, 2015
I want to understand how is it possible to send data (image + text) along a single form. Here is my code:
<form method="post" action="updateAccount"
encType="multipart/form-data">
<input type="file" name="file" value="Select image ..." /> <input
type="submit" value="Start Upload" /> <br>
<textarea rows="8" cols="54" name="about">Yes
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Apr 9, 2015
I would like to understand how does multipart/form-data works during file upload scenario's, Does it chunks the data from client to server while transferring the files ?
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Feb 21, 2014
I am using apache-commons-fileupload to get file from client to the server.(using JSP and Servlet).
JSP/HTML
<form method="POST" action="GetFile" enctype="multipart/form-data">
<input type="file" name="datafile">
<input type="text" name="text1">
<input type="submit" value="Next">
</form>
Servlet: GetFile
System.out.println(request.getParameter("text1"));
I am able to upload the file to the server, but I am not able to get the value of text1 in the servlet (I am getting null value of text1 in the servlet), I need this textfield in the form to submit some additional information while uploading it to the server.
--> Is enctype="multipart/form-data" option of form doesn't allow other form data to be submited? if it doesn't allow it then what are the other options I have to send this additional textfield to the server.
--> Or is there any other problem in my code?
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May 29, 2014
I have an html form with 200 input fields of type text. The first input field contains the name of a book author and the remaining 199 fields hold each a title of a book that he or she has written. I also have a servlet that processes the form data and sends it to a file. The entered data is restricted to a combination of the characters "a...z A...Z". how do i go about with creating my html page. The input fields are just too many, how to retrieve the 200 values in servlet.
<html>
<head>
<script>
var k;
function testField(Expression){
k=1;
var str1="abcdefghijklmnopqrstuvwxyz ";
var sor=Expression;
[code]....
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May 12, 2014
I have a very simple HTML form with a textField for a name, and add button to add the name to a MySQL database, and a sort button to sort the names in the database and display them. I almost have it working, however when I hit the "sort" button; I get the message that appears after a user clicks the add button along with the sorted list of names. It looks like this:
Please go back and add a name or sort.
Bill Jones
David G
Debbie Downer
Jane Doe
Joe Smith
John Doe
Mike Jones
Paul Smith
Susan Jones
What I have to change on my code to make just the list show up by itself when the user clicks sort?
My servlet code:
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
[Code] .....
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Aug 11, 2014
I'm new to json and the web. My purpose is to use json data from a server and parse it and show meaningful data to the user. I am aware of json parsing, so no sweat there. However, I would like to know how json data is sent to the front end after which it can be parsed.
Usually in my json parsing examples, I have a variable like var data = ]OR I do a getJSON on a data.json file which I have stored in the project folder. However, I want this data to come real time from a servlet. How to go about this?
So, basically my question is, how do I send real time json data from a servlet backend, say some records which I have extracted from the database using jdbc?
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Apr 1, 2014
I am working on a chess game. I need to construct a game room where all the player are present and room chat is up. Also some tables where games are being played. Now my question is how to create this game room?
To me this room must need to be like static or global (if I am not mistaken) that is up when server starts and players can join this room and should be down when server is done. How can I implement such room that would stay up for infinite time.
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Aug 8, 2014
I just wrote a simple servlet with a doPost() implementation (no doGet()).
I fill out a simple HTML form with one textfield and two radio buttons. When I press the submit button, it takes me to my servlet that prints out my submitted name and my radio button choices. So now my browser is sitting at the servlet URL with the results on the page:
name: Ryan (text field)
year: Second Year (radio button)
specialization: Application Development (radio button)
What exactly happens when I press F5 on this page and I say 'Yes' to Chrome's "Confirm form resubmission"?
I was surprised, because the browser remembered my previously entered request parameters, when I know that these should be destroyed upon exiting the servlet's HTTP method.
So, this is what I assume: What the resubmission does is re-enter exactly the same request parameters back into the previous form and it hits the submit button for me, which brings me back to the page of the servlet (/Choice).
I'm not sure, what happens on forced form resubmission (F5)?
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Oct 8, 2014
I just want to to ask how can I send a form to a servlet using javascript?
Here's my form:
<form id="movieForm" class="form-signin" action="addnewmovie" method="POST"
enctype="multipart/form-data">
<h1 class="text-center movie-title">Add New Movie</h1>
<div class="row">
<div class="col-md-12">
<input id="movieId" type="text" class="input-hide form-control"
placeholder="Movie ID">
[Code] ....
This button will responsible for sending:
<button id="add-new-movie"
class="button-position btn btn-primary btn-block"
type="submit" onClick="submitForm();">Add Movie</button>
Note that I include file uploading in the form.
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Jul 26, 2014
iam unable to view my login form using servlet below are my files....
***************************************************************************
LoginServ.java
***************************************************************************
package com.peg.servUserLogin;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
[code]....
i tried ruuning my LoginServ file and i get no error but i also i am not getting any output..(loging page)
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May 16, 2014
I am using Jframe to do keylistener to detect what key i type. so example when i type A it will return A and so on for other key. But what i really want is using textarea in jsp and have this similar or same code in servlet. Below are the code in JFrame
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
import javax.swing.JTextField;
[Code] .....
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Sep 12, 2014
I have a webform on JSP page which has several parameters(strings and integers) values and a file to be uploaded to the server through a servlet. It is strange to see that i'm able to upload the file on to the server but not able to get the rest of the parameters in the servlet using request.getParameter("someString") .
<form method="POST" enctype="multipart/form-data" action="/cassino/uploadFile" >
<fieldset>
<div class="form-group">
<label >*ID riparazione</label>
<input type="text" name="idRiparazione" />
[Code] ....
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Mar 5, 2015
I am having an issue with retrieving "grouped" data from HTML form to servlet. I will describe the scenario below.
In companies, they record the salary of the employees once a month.When they record it, they do not do it by visiting each an every employees personal "profile" (or whatever according to the system). Instead what they do is apply the salaries of all of them in one page.
To do the above thing they prefer excel like tabular sheets. Now, I have a html form, where the form content is a table. One row is dedicated to a one employee.
Below is my form.
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
[Code] .....
As you can see, I have wrapped every row with a `<tbody>`. The `value` attribute of the `<tbody>` will contain the employee id. Once the form is submitted, the below servlet will capture it.
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
[Code] .....
What I was trying is get the `value` attribute of `<tbody>` (so I can identify the id of the employee) and get the data inside that `<tbody>`. However this didn't work, because I ended up with `NullpointerException` because it failed to read the `<tbody>` value.
So, how can I pass the data from table to servlet where it can clearly understand that one row is representing data belong to a one employee? If this is not the way to do it, I am also open for other methods.
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May 22, 2014
I'm trying to learn java by making a login page using java, servlet, javascript, html and mysql. I can login with username and password, I can get all the information from database in the edit page. However, when I edit and click on "Submit" in EditPage.jsp, it gives HTTP Status 404. Same screen appears when I click on "Sign Up" from first page (NewFile.jsp) and click on "Submit" button after filling up user information.
I am posting all my code here but probably important ones are:
EditPage.jsp, Edit.java, EditDetails.java, UpdateUser.java and for Sign Up SignUpPage.jsp and Registration.java.
Firstly here are my error message and ss from my project explorer:
Here is my code:
LoginServlet.java
package com.amzi.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
[Code] ....
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Apr 8, 2014
I written java code in JSP to display data. I know it is bad practice. Actually my Business-service communicates with DB and returning data in the form of MAP. I don't have beans Because the fields in DB is dynamically changing. So, for now I'm retrieving Data by writing Java code in JSP. Is there any other way to display data without writing java code in JSP?
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Dec 20, 2014
I am new to Servlets and came across it in Head First Java 2nd Edition. I wrote the servlet code. I don't know how to run it. Do I need to set up a server?
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Apr 7, 2014
I've been trying to get my program to not accept empty strings when the user inputs, but I'm having some difficulties. I've tried for loops, as well as while loops.
import java.util.Scanner;
public class GasMileage
{
/**
* displayIntro
* This method displays the introduction to the user
*/
public static void displayIntro()
[Code] .....
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May 20, 2014
I'm a new Java user and I'm trying to code a simple login page. In first page (NewFile.jsp) users should enter their username and password and should click on "login", or click on "sign up".
1.) If user enters his username and password correctly, a login page (LoginPage.jsp) appears and says "welcome null" but it should show the name of that user instead of null.
2.) In that login page there is an edit button to edit profile information. When I clicked on it, every information is "null" and when I edit them and click on "Submit" button;
HTTP Status 404 -
type Status report
message
description The requested resource () is not available.
GlassFish Server Open Source Edition 3.1.2
that message appears.
3.) If I click on "Sign Up" button at the beginning, a registration jsp (SignUpPage.jsp) appears. After filling up text boxes and clicking on "Submit", same Status 404 screen appears.
I created a mysql database called "loginpage" using xampp. In that database there is a table called "users" and it has un, pass, name, surname, email and degree attributes.
Here is a screenshot of my project explorer:
Here is my code:
1. NewFile.jsp
<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<%@ page import="java.util.*"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
[Code] .....
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Jan 30, 2014
I have configured form based JAAS in my app. Basically, in web.xml I have declared security constraints on certain jsp page, declared specific roles, login and error pages. So, my login form is:
<form id="loginForm" action="j_security_check" method="post">
<p>
<label for="name">Username</label> <input name="j_username"
id="username" type="text" required/>
[Code] ....
This works fine when some user tries to access some of the pages declared in <security-constraint> tag of web.xml.
Container automatically manages login process, redirects to login page and if login details are valid, gives access to secured page.
Now, how should I implement login system so that user can go to login page (possibly same login form) and log in from there?
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Jan 1, 2015
I am trying to develop a new web application which takes in data from a form and stores data in a database.I have included all the three files join.jsp(the form which takes in data),reg.java(servlet) and JavaConncetDb(method which connects db and servlet). I get a 404 error when i try load the web application.
My file structure in eclipse
The error I am getting
join.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!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=ISO-8859-1">
[Code] .....
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Apr 30, 2015
I'm getting ready to code a program that takes record of items loaned and return in a table. I want more than one user to access the program to be able to update the data in the table. For instance, if one user added 5 new items to the table, all other users would be able open the program to see a modified table with 5 new items. Was looking for some advice and was wondering if implementing a database would work best.
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Dec 24, 2014
I want to create few forms in our project. I searched in web, All are PHP form Generator only not for any JSP. I could see one JSP form Generator Site. But the Content will store it in their Server. How to create Feedback form in JSP which will store the Data in Database directly.
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Apr 20, 2014
This is my first java program.
public class Myjava
{
public static void main (string args[]) {
system.out.println("hello java world");
}
}
I am getting the below error in cmd when compiling the program with command javac Myjava
Error: class name are only accepted if annotation processing is explicitly requested.
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Feb 1, 2014
If we have request which hit the server, before it reaches servlet or the response going to send the browsers, through how many components it pass through (or the process flow).
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Feb 20, 2014
i want to publish data from my application to mobile devices as calendar-events and back.therefore i want to write an application (webservice, servlet,???), which i then can add as a new account in my e.g. android device' calendar.
shortly: my application should simulate an exchange-/activesync-server, since on "all" mobile devices i can add exchange accounts.is/are there any documentation, libraries,
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