Servlets :: ActiveSync / Exchange Server

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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Java Servlet :: Server Side Request To Exchange Token In Oauth2 With Facebook

Jun 3, 2012

I need to implement Oauth2 with facebook to get authencation. I tried to write a servlet with the method Service, and i got the code thah i have to use in a second request.

Now i need to send a request at this URL :

1) [URL] .....

and wait for a responce with an URL that have the access_token to use with facebook

2) [URL] ....

Is it Possible in a single Servlet after i receive the "code" to send a second request to the URL in 1 and get the response with URL in 2 to retrieve the access_token?? if yes....how??

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Servlets :: How To Exchange Data In Different Nodes In Same Cluster

Jul 21, 2014

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My problem is the following:

I have to create some kind of diagnostic storage for each cluster member. It will collect all information and errors during application work.

And If I need to check application status I do web request and it will show me that these servers (cluster members) are okay and that node has an issue.

I'm using spring and tomcat.

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Servlets :: How To Create A Room That Should Be Like Static On The Server Until Server Is Down

Apr 1, 2014

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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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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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Servlets :: Components Inside Web Server?

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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Servlets :: How To Send Json Data From A Server

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 8, 2014

I want to know what is the best way for server side validation in servlets with JSP.

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Mar 14, 2014

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Servlets :: How Server Know Device Type From Which Request Came From

Nov 10, 2014

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Exchange Between Classes And Methods

Apr 14, 2014

I need to create a Dog class that represents a dog. Then, there are 2 different methods that in the end will each represent one dog each. Each printout will show the Name, Breed, Age, and Age in Human Years. Right now I'm having trouble trying to move methods in between each class. Here's the first class.

import java.util.Scanner; 
public class Dog { //no main method
static Scanner input = new Scanner(System.in);
//writeObject method
public static void writeObject(String name, String breed, int age) {
System.out.println("Enter the dog's name, breed, and age: ");

[Code] ....

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Currency Exchange With Java

Jun 30, 2014

I am working through a project in which I am supposed to change dollars into yen with the use of different deposits. I will post the code below that I have been working on.

import java.util.*;
public class DollartoYen {
public static final int MAX_DEPOSITS = 100;
public static final float DOLLAR_TO_YEN = 0.098f;
// read number of Dollars in each account from the keyboard
void readDollars(float[] dollars, int count ) {

[Code] .....

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Servlets :: Setting A Timer Task Even If Server Restarts

Jun 10, 2014

I have a web app that accepts requests. Once a request is sent, I want to create a thread that will sleep for several days if no user action is taken on the request to remind the user to do something. The problem is, how do I ensure the timer will pick up at the same place if the server is restarted? Would serializing the thread do that? I'm guessing no because I think you're just creating a new instance at start up. Just checking If there's anything built into Java to do this.

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Servlets :: Send And Receive Object Between Client And Server

Jul 6, 2014

I write a Client/Server program,trying to send and receive a object between client and server. I use the ObjectStream but there exists an EOFException on the client side when invoking readObject() .... I've tried many times but couldn't figure it out ...

server-side code

protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
try{
ObjectOutputStream out = new ObjectOutputStream(resp.getOutputStream());
ObjectInputStream in = new ObjectInputStream(req.getInputStream());
PersonalData pe = (PersonalData)in.readObject();
System.out.println(pe.getYearlySalary());

[Code] .....

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Servlets :: How To Handle Multiple Request In Java Server Side

Jul 16, 2014

I need to write server side program(Servlet) which must be access by several requests at same time.how to handle this using java? Do i need to use queue or multiple instance of same class. Any example server method which returns the results based on ID

public String getResut(int id){

1)get db connection
2)get the result from db
3) retun the result
}

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Servlets :: Write Output Stream After Response Has Been Committed By Server

Aug 6, 2014

When do i get IllegalStateException in servlets.What it means by trying to write to the output stream (response) after the response has been committed by server. What it means by committing response and uncommitting response. cannot i send uncommitted response.

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Servlets :: How Is Multipart Http Request Received / Consumed By Server

Sep 9, 2014

I would like to know the details about how a server handles a multipart request. I know that a webserver comprises of a HTTP adapter(which is responsible for receiving http requests and sending http responses) and a container(which is responsible for handling dynamic requests).

So, when a client sends a request, the HTTP adapter receives it. Then transfers the request to the container if the http adapter cannot handle it(jsps, servlets for example).

Suppose, a client sends a multipart request which has an avi file of size upto 100mb. For example, lets assume that the client takes 5 minutes to upload the file.

Lets also assume that my application is only interested in flv files. Is there any way to stop/terminate the multipart request before the file is transferred to the server? So that the client's time will not be wasted?

I think that the HTTP adapter will transfer the request to the container only after receiving the entire request, i.e. the servlet will be called only after the file is transferred to the server from client. Is it right?

If its right then there is no easy way to terminate the multipart request unless the entire file is transferred to the server. Is this right?

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Servlets :: How Does Web Server Differentiates Between Request For Static And Dynamic Web Page

Mar 4, 2014

How does web server differentiates between request for static web page and request for dynamic web page? i think if web server receives request for static page directly renders that to server or else if request is for dynamic web page passes that to web app which processes the request and renders that to client. bUT how does web server differentiates between both the request.

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May 4, 2010

Is there any kind of way to generate HTTP request within a servlet, dispatch it to the server and get back the answer delivered to the servlet? Or are the servlets meant only to respond to passed requests, not generate them?

(I asked a similar question here: [Code] ..... but no luck)

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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.
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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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Servlets :: Unable To Get Path Of File When Upload Files In Server After Browsing Folders

Jun 30, 2014

I have a code that uploads files in server after browsing folders and files then get the paths of files but I have a problem in getting the paths

List items = upload.parseRequest(request);
Iterator iterator = items.iterator();
while (iterator.hasNext()) {
FileItem item = (FileItem) iterator.next();
if (!item.isFormField())
{ fileName = item.getName();
root = getServletContext().getRealPath("/");
path = new File(root + "/uploads");

[Code]...

list1 must has paths that I want but I do not get the paths of upload files

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JSF :: XHTML On One Server Can Talk To Managed-bean On Other Server (different Machine)?

Jul 27, 2014

I am developing a web application using JSF-2.0 on weblogic 10.3.6. I am using Facelets as VDL. I have 5 different machine. They are different according to their OS and their geographical location. On my first xhtml page server (machine) is decided. Then on next page file upload and rest of processing takes place. My restriction is that SSO configuration can be done on only one machine.

So I am restricted to using xhtml files from only my primary server where SSO configuration is done. But I have to connect to servlets or managed-bean of different machine as requests are machine specific and file needs to be uploaded to those machines for processing. So I cannot use redirectUrl as I need to be only on one machine. Is it possible that xhtml on one server can talk to managed-bean on other server(different machine)?.

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Connect A UDP Web Server To Compression Server

Apr 19, 2015

Working on a project and am in need of some quick guidance to wrap things up. I have a functioning compression server that will create two files after the user gives it some input and a "magic string" to know when to stop reading input for that specific file.

I now need to connect a UDP web server to that compression server. the web server will read from the HTTP POST Request the data that was uploaded and send it to the compression server to create the two files... i have included both programs below

Web Server:

import java.io.*;
import java.net.*;
import java.util.*;
final class HttpRequest implements Runnable {
//Declare Constants and Variables
final static int BUF_SIZE = 1024000;
final static String CRLF = "
";

[Code]...

Compression Server:

import java.net.*; // for DatagramSocket, DatagramPacket, and InetAddress
import java.io.*; // for IOException
import java.util.zip.*;// for Zip
public class CompressionServer {
private static final int ECHOMAX = 65535; // Maximum size of echo datagram
private static final int BUFFER = 2048; // Buffer size for writing to Zip File

[Code]....

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SQL Server Error

Jun 16, 2014

Im trying to connect to sql server but i get this error

2014 7:03:38 ΜΜ com.microsoft.sqlserver.jdbc.SQLServerConnection Prelogin
WARNING: ConnectionID:1 ClientConnectionId: 8ee72721-9ec7-41e2-9f57-ebc16d958073 Prelogin error: host localhost port 3306 Unexpected response type:74
url = "jdbc:sqlserver://localhost:3306;user=root;password=root;database=test";

When i try to connect with mysql workbench i connect succesfully.

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May 10, 2013

I am new to FTP java api. I wanted to do a Ftp transfer from one server to another server using java. I have the connection details for both servers. I found a link with some code but when I try to execute it it throws an error "Couldn't initiate transfer. Check that filenames are valid."

This is the link--> [URL] ....

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Testing TCP Client And Server

Oct 22, 2014

I am attempting to test a TCP Client and Server for an assignment I am doing in class. The goal here is to "test your client and Server applications by transferring (i) a file having 10,000+ lines (see supplied big-file1.txt having 12000+ lines), (ii) a file having 20,000+ lines (you may create one of your own from big-file1.txt, or obtain a large size file from the Google website at [URL] ...). Then, compute and display the total transfer time of the files at both of the sides separately (your choice in millisecond/second)."

I have created the TCPClient and TCPServer java classes, ran the server first and then the client, and using mathematical formulas to calculate the transfer time. Trouble is, I'm having trouble testing the client and server in the file area and not the area where I had to input a line, let the server print it, and then have the client eliminate the articles from the line. I need testing the file. Here is my code so far:

TCPClient:

package tcpclient;
import java.io.*;
import java.net.*;
public class TCPClient {
public static void main(String[] args) throws IOException{
// TODO Auto-generated method stub
String sentence;

[code] ....

How to fix the code so that the time in seconds does not output as 60 for both files and that the files go through the exchange?

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