Server /Client Java/C++
I was asked to implement a client/server application that constrained by size of 10 MB or less with JRE included,As this application is targeted to single OS users only so the solution was to use C++ instead but still on the other hand the server can use the advantage of Java networking and JDBC so anyway the question is:
Can I implement server in Java* and implement client using C++*,I haven't tried it yet but i need to know if it is possible.
A browser like Firefox and IE is a stand alone program you install on a desktop and can use without connectivity to the internet. While a browser can run any web application using code from the internet, a browser is not run from a server cannot run in another browser.
A web application is one which is deployed and typically used only on the web and usually runs inside a browser, but the browser is a desktop app.
if you mean that i already told my supervisor that but he still not convinced We cannot say what your supervisor will approve of as this is a not question of what is technically possible. You have to ask him/her as your supervisor is setting the requirements.
Similar Messages
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Printing a hashtable to screen, Server & Client (Java & CORBA)
Hi all,
I have written a server method that prints a hashtable's contents to screen:
public void viewAllEquipment () throws noEquipmentInTable {
// Does any equipment exist?
if (equipmentList.isEmpty() == true) {
throw new noEquipmentInTable();
System.out.println("The equipment list is as follows: ");
Enumeration tableEntries = equipmentList.keys();
int i = 1;
while (tableEntries.hasMoreElements()) {
String names = (String) tableEntries.nextElement();
System.out.print(i + ". Name = " + names + ", Description = " + equipmentList.get(names));
i++;
}The Client uses simple code to call this method:
hireCompanyServant.viewAllEquipment();As I'm sure you're probably aware, the Hashtable's contents gets printed to the Server screen not the Client screen! How can I get it printing on the Client instead? I'm unsure whether returning a value via the method would work, and can't think of any other way to do this.
Any help would be greatly appreciated.
Thanks
Edited by: JonBetts2004 on Mar 7, 2008 5:14 AMHaha, ok sorry, will do. It's all command-line based, CORBA client-sever model.
Client: A file/program that implements and calls methods given by the Server.
Server: A file/program that contains methods that can be called by other clients/servers.
Screen: command line interface.
As it is a CORBA implementation, an ORB is started, then the Java Server is started, and finally the Java Client is run in the command prompt, which shows a list of actions to take (add equipment, edit equipment, view equipment, etc).
Sorry if that's too vague, I find these things hard to explain.
But basically, the 'client' makes use of the viewAllEquipment method provided by the 'server', which prints the contents of a hashtable to the command line. It is printed to the Server's command line rather than the Client's. I need it printing to the Client's command line, but am unsure what is the best way to approach it. Changing the method from a void to a string, and then returning a value? Or something else?
thanks -
Java Server/Client Applicaton - problem with sending data back
Hello!
I'm trying to write a small server/client chat application in Java. It's server with availability to accept connections from many clients and it's app just for fun... However, I've come up against a huge problem: everything what clients send, arrives to server (I'm sure about that because it is displayed on the Server Application screen) and then server should send it back to all clients but it doesn't work. I have no faintest idea what causes this problem. Maybe you can help me?
Here is my server app code:
import java.net.*;
import java.util.*;
import java.io.*;
* @author Robin
public class Server {
ServerSocket serw = null;
Socket socket = null;
String line = null;
Vector<ClientThread> Watki = new Vector();
ClientThread watek = null;
public Server(int port) {
try {
serw = new ServerSocket(port);
line = "";
while(true) {
System.out.println("Running. Waiting for client to connect...");
socket = serw.accept();
System.out.println("Connected with:\n" + socket.getInetAddress() + "\n");
watek = new ClientThread(socket);
Watki.addElement(watek);
Watki.firstElement().Send("doszlo?");
}catch (IOException e) {
System.out.println("BLAD: " + e);
public void sendToAll(String s) {
for(int i = 0; i < Watki.size(); i++) {
Watki.elementAt(i).Send(s);
public class ClientThread extends Thread {
Socket socket;
DataInputStream in = null;
DataOutputStream out = null;
String line = null;
public ClientThread(Socket s) {
try {
this.socket = s;
in = new DataInputStream(s.getInputStream());
out = new DataOutputStream(s.getOutputStream());
start();
}catch (IOException e) {
System.out.println("BLAD: " + e);
public void Send(String s) {
try {
out.writeUTF(s);
}catch (IOException e) {
System.out.println("BLAD: " + e);
public void run() {
try {
line = "";
while (true) {
line = in.readUTF();
System.out.println(line);
sendToAll(line);
}catch (IOException e) {
System.out.println("BLAD: " + e);
public static void main(String[] args) {
Server serwer = new Server(5000);
}And here is client app code:
import java.net.*;
import java.util.*;
import java.io.*;
* @author Robin
public class Client implements Runnable {
Socket socket = null;
BufferedReader keyIn = new BufferedReader(new InputStreamReader(System.in));
DataInputStream in = null;
DataOutputStream out = null;
String line = null;
public Client(String host, int port) {
try {
System.out.println("Connecting to " + host + ":" + port);
socket = new Socket(host, port);
System.out.println("Connected\nTALK:");
out = new DataOutputStream(socket.getOutputStream());
in = new DataInputStream(socket.getInputStream());
line = "";
while(!line.toLowerCase().equals(".bye")) {
line = keyIn.readLine();
Send(line);
}catch (UnknownHostException e) {
System.out.println("BLAD: " + e);
}catch (IOException e) {
System.out.println("BLAD: " + e);
public void Send(String s) {
try {
out.writeUTF(s);
}catch (IOException e) {
System.out.println("BLAD: " + e);
public void run() {
String loaded = "";
try {
while(true) {
loaded = in.readUTF();
System.out.println(loaded);
}catch (IOException e) {
System.out.println("BLAD: " + e);
public static void main(String[] args) {
Client client = new Client("localhost", 5000);
}By the way, this app is mainly written in English language (text that appears on the screen) however in functions I used Polish language (for example: BLAD - it means ERROR in English). Sorry for that :)Yeap, I will change those exceptions later, thanks for advice.
You asked what's going on with it: both applications start with no errors, but when I write something in client side it should be sent to the server and then forwarded to all connected clients but it stops somewhere. However, I added a one line to the server code
line = in.readUTF();
System.out.println(line);
sendToAll(line); and after it reads message from client (no matter which one) it shows that message on the server side screen, then it should send this message to all clients but it doesn't work in this moment. What's confusing: no errors occurs, so it's rather a mistake in my code, but where?
Edited by: Robin3D on Sep 30, 2009 9:07 AM -
File transfer, read write through sockets in client server programming java
Hello All, need help again.
I am trying to create a Client server program, where, the Client first sends a file to Server, on accepting the file, the server generates another file(probably xml), send it to the client as a response, the client read the response xml, parse it and display some data. now I am successful sending the file to the server, but could not figure out how the server can create and send a xml file and send it to the client as response, please help. below are my codes for client and server
Client side
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;
public class XMLSocketC
public static void main(String[] args) throws IOException
//Establish a connection to socket
Socket toServer = null;
String host = "127.0.0.1";
int port = 4444;
try
toServer = new Socket(host, port);
} catch (UnknownHostException e) {
System.err.println("Don't know about host: localhost.");
System.exit(1);
} catch (IOException e) {
System.err.println("Couldn't get I/O for the connection to host.");
System.exit(1);
//Send file over Socket
//===========================================================
BufferedInputStream fileIn = null;
BufferedOutputStream out = null;
// File to be send over the socket.
File file = new File("c:/xampp/htdocs/thesis/sensorList.php");
// Checking for the file to be sent.
if (!file.exists())
System.out.println("File doesn't exist");
System.exit(0);
try
// InputStream to read the file
fileIn = new BufferedInputStream(new FileInputStream(file));
}catch(IOException eee)
System.out.println("Problem, kunne ikke lage fil");
try
InetAddress adressen = InetAddress.getByName(host);
try
System.out.println("Establishing Socket Connection");
// Opening Socket
Socket s = new Socket(adressen, port);
System.out.println("Socket is clear and available.....");
// OutputStream to socket
out = new BufferedOutputStream(s.getOutputStream());
byte[] buffer = new byte[1024];
int numRead;
//Checking if bytes available to read to the buffer.
while( (numRead = fileIn.read(buffer)) >= 0)
// Writes bytes to Output Stream from 0 to total number of bytes
out.write(buffer, 0, numRead);
// Flush - send file
out.flush();
// close OutputStream
out.close();
// close InputStrean
fileIn.close();
}catch (IOException e)
}catch(UnknownHostException e)
System.err.println(e);
//===========================================================
//Retrieve data from Socket.
//BufferedReader in = new BufferedReader(new InputStreamReader(toServer.getInputStream()));
DataInputStream in = new DataInputStream(new BufferedInputStream(toServer.getInputStream()));
//String fromServer;
//Read from the server and prints.
//Receive text from server
FileWriter fr = null;
String frn = "xxx_response.xml";
try {
fr = new FileWriter(frn);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
try{
String line = in.readUTF(); //.readLine();
System.out.println("Text received :" + line);
fr.write(line);
} catch (IOException e){
System.out.println("Read failed");
System.exit(1);
in.close();
toServer.close();
public class XMLSocketS
public static void main(String[] args) throws IOException
//Establish a connection to socket
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(4444);
} catch (IOException e) {
System.err.println("Could not listen on port: 4444.");
System.exit(1);
Socket clientLink = null;
while (true)
try
clientLink = serverSocket.accept();
System.out.println("Server accepts");
BufferedInputStream inn = new BufferedInputStream(clientLink.getInputStream());
BufferedOutputStream ut = new BufferedOutputStream(new FileOutputStream(new File("c:/xampp/htdocs/received_from_client.txt")));
byte[] buff = new byte[1024];
int readMe;
while( (readMe = inn.read(buff)) >= 0)
{ //reads from input stream, writes the file to disk
ut.write(buff, 0, readMe);
// close the link to client
clientLink.close();
// close InputStream
inn.close();
// flush
ut.flush();
// close OutputStream
ut.close();
//Sending response to client
//============================================================
//============================================================
System.out.println("File received");
}catch(IOException ex)
{System.out.println("Exception.");}
finally
try
if (clientLink != null) clientLink.close();
}catch(IOException e) {}
clientLink.close();
//serverSocket.close();
}SERVER
import java.net.*;
import java.io.*;
public class XMLSocketS
public static void main(String[] args) throws IOException
//Establish a connection to socket
ServerSocket serverSocket = null;
try {
serverSocket = new ServerSocket(4545);
} catch (IOException e) {
System.err.println("Could not listen on port: 4444.");
System.exit(1);
Socket clientLink = null;
try
clientLink = serverSocket.accept();
System.out.println("Server accepts the client request.....");
BufferedInputStream inn = new BufferedInputStream(clientLink.getInputStream());
BufferedOutputStream ut = new BufferedOutputStream(new FileOutputStream(new File("c:/xampp/htdocs/received_from_client.txt")));
byte[] buff = new byte[1024];
int readMe;
while( (readMe = inn.read(buff)) >= 0)
{ //reads from input stream, writes the file to disk
ut.write(buff, 0, readMe);
ut.flush();
//Sending response to client
//============================================================
BufferedInputStream ftoC = null;
BufferedOutputStream outtoC = null;
// File to be send over the socket.
File file = new File("c:/xampp/htdocs/thesis/user_registration_response.xml");
try
// InputStream to read the file
ftoC = new BufferedInputStream(new FileInputStream(file));
}catch(IOException eee)
{System.out.println("Problem reading file");}
// OutputStream to socket
outtoC = new BufferedOutputStream(clientLink.getOutputStream());
byte[] buffer = new byte[1024];
int noRead;
//Checking if bytes available to read to the buffer.
while( (noRead = ftoC.read(buffer)) >= 0)
// Writes bytes to Output Stream from 0 to total number of bytes
outtoC.write(buffer, 0, noRead);
outtoC.flush();
//============================================================
System.out.println("File received");
}catch(IOException ex)
{System.out.println("Exception.");}
finally
try
if (clientLink != null) clientLink.close();
}catch(IOException e) {}
clientLink.close();
//serverSocket.close();
}CLIENT SIDE
import java.io.*;
import java.net.*;
public class XMLSocketC
@SuppressWarnings("deprecation")
public static void main(String[] args)
// Server: "localhost" here. And port to connect is 4545.
String host = "127.0.0.1";
int port = 4545;
BufferedInputStream fileIn = null;
BufferedOutputStream out = null;
// File to be send over the socket.
File file = new File("c:/xampp/htdocs/thesis/sensorList.xml");
try
// InputStream to read the file
fileIn = new BufferedInputStream(new FileInputStream(file));
}catch(IOException eee)
{System.out.println("Problem");}
try
System.out.println("Establishing Socket Connection");
// Opening Socket
Socket clientSocket = new Socket(host, port);
System.out.println("Socket is clear and available.....");
// OutputStream to socket
out = new BufferedOutputStream(clientSocket.getOutputStream());
byte[] buffer = new byte[1024];
int numRead;
//Checking if bytes available to read to the buffer.
while( (numRead = fileIn.read(buffer)) >= 0)
// Writes bytes to Output Stream from 0 to total number of bytes
out.write(buffer, 0, numRead);
// Flush - send file
out.flush();
//=======================================
DataInputStream in = new DataInputStream(new BufferedInputStream(clientSocket.getInputStream()));
BufferedWriter outf = new BufferedWriter(new FileWriter("c:/xampp/htdocs/received_from_server.txt",true));
String str;
while(!(str = in.readLine()).equals("EOF")) {
System.out.println("client : Read line -> <" + str + ">");
outf.write(str);//Write out a string to the file
outf.newLine();//write a new line to the file (for better format)
outf.flush();
//=======================================
// close OutputStream
out.close();
// close InputStrean
fileIn.close();
// close Socket
clientSocket.close();
}catch (IOException e)
{System.out.println("Exception.");}
Could you please point where am I doing the stupid mistake, client to server is working properly, but the opposite direction is not.
Thanks -
After installing Final cut server client on OSX 10.6.8 error: Apple QuickTime or the QuickTime Java component is not installed.
I know this error on windows machines but cannot get a solution for OSX.I have fixed this by installing the latest combo update
-
Rich-client Java application that is client to WLS6.1 but behind corporate proxy server
We have a rich-client Java application that is a client to WLS6.1 that can't
connect to the WLS6.1 server when the client is behind a corporate proxy
server. What is a remedy for this?
Thanks,
Jim WeavereFound solution. Followed Part 2 of the solution as explained in http://support.bea.com/application?namespace=askbea&origin=ask_bea_answer.jsp&event=link.view_answer_page_solution&answerpage=solution&page=wlw/S-19283.htm
What surprises me is that this solution to a common problem is hidden and hard
to find. If I am correct, no part of WLS 8.1 documentation suggests this. Rather
the doc says, set the system properties for the standard JDK 1.4 network properties
and it should work fine. If it is actually supposed to work like this, is it a
bug then?
"Naveen Kumar" <[email protected]> wrote:
>
Hi,
I have a web application deployed on WebLogic server 8.1 sp1. And my
server is
behind a http proxy server. Now one of the components in the application
makes
a web service call to a service located external to the system, and it
always
throws "java.net.UnknownHostException". I have set the Java system properties
http.proxyHost = my proxy server, http.proxySet = true and http.proxyPort
= 80
and it still does not help.
If I try to evaluate the web service component as a stand alone client
using WebLogic's
webserviceclient.jar, everything works fine. I can't figure what I have
to do
to get this component working from within the WebLogic server. Can anybody
provide
me with inputs, comments or suggestions.
Naveen. -
Hey,
I'm trying to make a chat and I've made the server and client, and the server can accept several clients. Only; they communicate client-server, and not client-server-client (if you get what I mean) like I want them to, pretty obviously, since its a chat. I'm still very new to this, heres my code anyhow:
Server
import java.net.*;
import java.io.*;
public class OJChatServer{
public static void main(String[] args) throws IOException{
int port=2556;
boolean listening = true;
ServerSocket cServerSocket = null;
try{
cServerSocket = new ServerSocket(port);
System.out.println("Server started; Waiting for client(s) to connect.");
} catch(IOException e){
System.err.println("Could not listen on port: "+port);
System.exit(1);
while(listening){
try{
new handleClient(cServerSocket.accept()).start();
} catch(IOException e){
System.err.println("Accept has failed");
System.exit(1);
cServerSocket.close();
static class handleClient extends Thread{
private Socket clientSocket = null;
private PrintWriter send;
private BufferedReader recieve;
private String inputString, outputString;
private String clientName = "";
public handleClient(Socket acceptedSocket){
//super("handleClient");
this.clientSocket = acceptedSocket;
public void run(){
try{
recieve = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
send = new PrintWriter(clientSocket.getOutputStream(), true);
inputString = recieve.readLine();
clientName = inputString;
System.out.println("Client \""+clientName+"\" has connected. ("+clientSocket+")");
while(inputString != null){
outputString = processInput(inputString);
// outputString = send.readLine();
send.println(outputString);
if(inputString.equalsIgnoreCase("Quit")||inputString.equalsIgnoreCase("/Quit")) break;
inputString = recieve.readLine();
System.out.println("Client \""+clientName+"\" has disconnected. ("+clientSocket+")");
send.close();
recieve.close();
clientSocket.close();
} catch(IOException e){
//e.printStackTrace();
System.out.println("Client \""+clientName+"\" has disconnected. ("+clientSocket+")");
}//run()
static String processInput(String theInput){
String theOutput = "From server. Test";
return theOutput;
}//handleClient
}//OJChatServer---------------------------------------------------------------------------------------------
Client
import java.net.*;
import java.io.*;
public class OJChatClient{
public static void main(String[] args) throws IOException{
String nickname = "Guest";
String host = "localhost";
int port = 2556;
Socket cClientSocket = null;
PrintWriter send = null;
BufferedReader recieve = null;
BufferedReader stdIn = null;
String fromServer, fromUser;
System.out.println("Welcome to Ove's Java Chat!\nFor help and commands type: /help");
nickname = KeyboardReader.readString("Enter nickname: ");
System.out.println("Connecting to host...");
try{
cClientSocket = new Socket(host, port);
send = new PrintWriter(cClientSocket.getOutputStream(), true);
System.out.println("Connection established.");
} catch(UnknownHostException e){
System.err.println("Unknown host: "+host);
System.exit(1);
} catch(IOException e){
System.err.println("Couldn't get I/O for connection: "+host+"\nRequested host may not exist or server is not started");
System.exit(1);
send.println(nickname);
stdIn = new BufferedReader(new InputStreamReader(System.in));
recieve = new BufferedReader(new InputStreamReader(cClientSocket.getInputStream()));
while((fromServer = recieve.readLine())!=null){
System.out.println("Server: "+fromServer);
fromUser = stdIn.readLine();
if(fromUser!=null){
//System.out.println(nickname+": "+fromUser);
send.println(fromUser);
if(fromUser.equalsIgnoreCase("Quit")||fromUser.equalsIgnoreCase("/Quit")) break;
System.out.println("Closing connection...");
send.close();
recieve.close();
stdIn.close();
cClientSocket.close();
System.out.println("Connection terminated.");
System.out.println("Goodbye and happy christmas!");
}I want to make it graphical too, but I want to make it work like it should, before i tackle trying Swing out. This code isn't completely complete yet, as you can see. It doesn't handle the clients messages correctly yet.
What I want to know is how i should send a message from a client to all the other Sockets on the server.It compiles, but it gives an error when the client connects.
import java.net.*;
import java.io.*;
public class OJChatServer4{
static Socket[] clientSockets = new Socket[100];
static int socketCounter = 0;
public static void main(String[] args) throws IOException{
int port=2556;
boolean listening = true;
ServerSocket cServerSocket = null;
try{
cServerSocket = new ServerSocket(port);
System.out.println("Server started; Waiting for client(s) to connect.");
} catch(IOException e){
System.err.println("Could not listen on port: "+port);
System.exit(1);
while(listening){
try{
clientSockets[socketCounter] = cServerSocket.accept();
new handleClient(clientSockets[socketCounter]).start();
socketCounter++;
} catch(IOException e){
System.err.println("Accept has failed");
System.exit(1);
cServerSocket.close();
static class handleClient extends Thread{
private Socket clientSocket = null;
public static PrintWriter send;
private BufferedReader recieve;
private String inputString, outputString;
private String clientName = "";
public handleClient(Socket acceptedSocket){
//super("handleClient");
this.clientSocket = acceptedSocket;
public void run(){
try{
recieve = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
send = new PrintWriter(clientSocket.getOutputStream(), true);
inputString = recieve.readLine();
clientName = inputString;
System.out.println("Client \""+clientName+"\" has connected. ("+clientSocket+")");
while(inputString != null){
//outputString =
processInput(inputString);
// outputString = send.readLine();
send.println(outputString);
if(inputString.equalsIgnoreCase("Quit")||inputString.equalsIgnoreCase("/Quit")) break;
inputString = recieve.readLine();
System.out.println("Client \""+clientName+"\" has disconnected. ("+clientSocket+")");
send.close();
recieve.close();
clientSocket.close();
} catch(IOException e){
//e.printStackTrace();
System.out.println("Client \""+clientName+"\" has disconnected. ("+clientSocket+")");
}//run()
static void processInput(String theInput) throws IOException{
//String theOutput = "Test From server.";
PrintWriter sendToAll;
sendToAll = new PrintWriter(clientSockets[socketCounter].getOutputStream(), true);
for(int i=0;i<socketCounter;i++){
sendToAll.println(theInput);
//return theOutput;
}//handleClient
}//OJChatServer -
Call Client Java Proxy from Server Java Proxy
Hi Gurus!!
I'm trying to call a Client Java Proxy from a Server Java Proxy.
Is possible to do this? I think must be possible.
I have called this Client Java Proxy from another application, and run ok.
I have tried to call it following the Guide to call Java Client Proxies:
es.navantia.xi.mm.dispositivosRobotizadosKasto.MIRobotOut_PortTypeHome queryOutHome = null;
es.navantia.xi.mm.dispositivosRobotizadosKasto.MIRobotOut_PortTypeRemote queryOutRemote = null;
try {
// Get naming context
Properties p = new Properties();
p.put(
Context.INITIAL_CONTEXT_FACTORY,
"com.sap.engine.services.jndi.InitialContextFactoryImpl");
p.put(Context.PROVIDER_URL, "myurl:50104");
p.put(Context.SECURITY_PRINCIPAL, "MMIGUEZ");
p.put(Context.SECURITY_CREDENTIALS, mypasswrod);
Context ctx = new InitialContext(p);
Object ref = ctx.lookup("RobotOut");
// Look up jndi name of proxy bean
try {
queryOutHome =
(MIRobotOut_PortTypeHome) PortableRemoteObject.narrow(
ref,
MIRobotOut_PortTypeHome.class);
} catch (Exception e) {
throw new RuntimeException(e + "1");
// Get Remote interface
queryOutRemote = queryOutHome.create();
} catch (Exception e) {
throw new RuntimeException(e + "2");
but I get this error
"com.sap.aii.af.ra.ms.api.DeliveryException: Error invoking method mIRobotIn of proxy bean $Proxy351: es.navantia.xi.mm.dispositivosRobotizadosKasto.MIRobotOut_PortTypeHome: com.sap.aii.proxy.xiruntime.core.XmlInboundException: Error invoking method mIRobotIn of proxy bean $Proxy351: es.navantia.xi.mm.dispositivosRobotizadosKasto.MIRobotOut_PortTypeHome"
es.navantia.xi.mm.dispositivosRobotizadosKasto.MIRobotOut_PortTypeHome is the corresponding PortTypeHome to the Client Java Proxy.
I have tried to call too calling directly from the server Java Proxy to the method correcponding to the Client Java Proxy. The error I get is:
"com.sap.aii.af.ra.ms.api.DeliveryException: Error invoking method mIRobotIn of proxy bean $Proxy351: es/navantia/xi/mm/dispositivosRobotizadosKasto/DTRobot_Type: com.sap.aii.proxy.xiruntime.core.XmlInboundException: Error invoking method mIRobotIn of proxy bean $Proxy351: es/navantia/xi/mm/dispositivosRobotizadosKasto/DTRobot_Type"
Tha call to the client is:
es.navantia.xi.mm.dispositivosRobotizadosKasto.MIRobotOut_PortType clase = null;
es.navantia.xi.mm.dispositivosRobotizadosKasto.DTRobot_Type client_req = null;
es.navantia.xi.mm.dispositivosRobotizadosKasto.DTRobotResponse_Type client_res = null;
client_res = clase.mIRobotOut(client_req);
Please, any help will be useful.
Thanks and regards,
Manuel Míguez.Hi,
Now I get another error message:
com.sap.aii.af.ra.ms.api.DeliveryException: Error invoking method mIRobotIn of proxy bean $Proxy351: es/navantia/xi/mm/dispositivosRobotizadosKasto/MITextoOut_PortTypeRemote: com.sap.aii.proxy.xiruntime.core.XmlInboundException: Error invoking method mIRobotIn of proxy bean $Proxy351: es/navantia/xi/mm/dispositivosRobotizadosKasto/MITextoOut_PortTypeRemote
Now, my source is:
MITextoOut_PortTypeHome queryOutHome = null;
MITextoOut_PortTypeRemote queryOutRemote = null;
try {
// Get naming context
Context ctx = new InitialContext();
// Look up the EJB name in the environment
Object ref = ctx.lookup("java:comp/env/ejb/TextoOut");
// Object ref = ctx.lookup("java:comp/env/ejb/MITextoOut_PortTypeBean");
// Cast to Home interface
queryOutHome = (MITextoOut_PortTypeHome)
PortableRemoteObject.narrow(ref,
MITextoOut_PortTypeHome.class);
// Get Remote interface
queryOutRemote = queryOutHome.create();
} catch (Exception e) {
System.out.println("RemoteException occurred: "+e.getMessage());
e.printStackTrace();
//return;
try {
queryOutRemote.$messageSpecifier();
} catch (RemoteException e2) {
// TODO Auto-generated catch block
e2.printStackTrace();
DTTexto_Type Texto_type = new DTTexto_Type();
Texto_type.setTexto(req_texto);
DTTextoResponse_Type Texto_response = new DTTextoResponse_Type();
try {
Texto_response = queryOutRemote.mITextoOut(Texto_type);
} catch (SystemFaultException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (ApplicationFaultException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (RemoteException e) {
// TODO Auto-generated catch block
e.printStackTrace();
I have tryed removing queryOutRemote.$messageSpecifier() and I get the error:
com.sap.aii.af.ra.ms.api.DeliveryException: Error invoking method mIRobotIn of proxy bean $Proxy351: es/navantia/xi/mm/dispositivosRobotizadosKasto/DTTexto_Type: com.sap.aii.proxy.xiruntime.core.XmlInboundException: Error invoking method mIRobotIn of proxy bean $Proxy351: es/navantia/xi/mm/dispositivosRobotizadosKasto/DTTexto_Type
Somebody knows what could be the cause of these errors?
Thanks and regards,
Manuel. -
Register Client Java Proxies to Proxy Server
Hi All,
Is it required to register the client java proxies with the proxy server?
Thanks in advancelol Some people dont know how to give the correct links as well.
Next wiki --> how to give correct links for questions asked on SDN.. will be a huge hit I guess -
Forms Client Java Applet waiting several minutes
Hello,
We use Forms 10.1.2.0 and html/javascript/plsql applications.
All forms applications are working but
we have the problem that from time to time the client java applet must wait minutes until there is an answer from the forms-servlet (especially when there is high activity in the system).
More than one user is working in the form with high activity - the applet sends a request
over the network - after 4 minutes the result is shown and you can go on working
without problems.
So a lot of users think the application has crashed and terminate before.
The applet shows no error messages.
There is no sign that there is a lost connection between applet and servlet.
It is not reproducible. That means you can work 2 hours and everything is ok
or you work 5 minutes and you have to wait.
network problems?
firewall problems?
do requests of the forms servlet to the database have minor priority on the application server
than html/plsql requests?
any ideas?when the problem occurs (user has to wait 3-4 minutes) we found in the log
3 heartbeats from the forms client within 2 seconds ?
after 3-4 minutes the forms client is ok (user can go on working)
and the pings are every 2 minutes (like it is expected).
The application.log file may contain duplicate posts requests with
identical pragma header numbers, indicating that the client
is resending
requests due to network packet losses. Under normal circumstances,
only the last Post request, terminating a Forms session,
should contain
a duplicate pragma header number.
...a network problem ?
anyone else who had the same problem ? -
How can I authenticate to a XI server using java via SOAP (SAAJ)
Hi everybody!
I need to connect (SOAP) to a XI server using JAVA
I'm using SAAJ api.The problem is XI server need authentication but I can't found the way to do it! this is a part of code
SOAPConnectionFactory soapConnFactory = SOAPConnectionFactory.newInstance();
SOAPConnection connection = soapConnFactory.createConnection();
URL destination = new URL("https://host:port");
SOAPMessage reply = connection.call(message, destination);
(message is the XML code)
but the application has the following error:
com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection post
GRAVE: SAAJ0009: Fallo en el envío del mensaje
I think, maybe is a authentication problem, because the XI server needs it. But I don't have idea how can I send the user and pass
Any IDea???? please
the libraries are ok imported, I use netweaver to develop-
thanks in advantagehi Leslie,
there are only a few of these errors,
you can try this:
http://www.oxygenxml.com/forum/ftopic1103.html&sid=0abee8c719481a3dd783ff7d5cd84105
are you sure your URL is accessible from your location?
you may also check:
http://www.google.pl/search?hl=pl&q=HttpSOAPConnectionpostSAAJ0009%3A&lr=
Regards,
michal -
FTP server in java doesn't work well at win os in some status.Why?
As we know,FTP server in java used to use "BufferedOutputStream(socket.getOutputStream())" to complete data transfer.
socket.getOutputStream() returns SocketOutputStream, and SocketOutputStream use native method:socketWrite0 to transfer data.
I writted a FTP server in java that runs at win XP or win 2003 server. FTP client download file through internet,and when file size is large(for example, 5M),the download is failure. But I changed FTP server in C++,the download is ok. These PCs have multi network card commonly.
In the first instance,I thinked my programm may be written wrong. But I have used CrossFTP and DanoFTP at sourceforge.net, they failed too.
I have compared the source code of these FTP server and they are same in data transfer.
There are another strange phenomenon.FTP server at some PC works well. For example,when I install FTP server at another PC.So I think that it is not link problem,and may be relate with PC's configuration?
Any help appreciate.Win XP(sp2) and win 2003 server all have happened. Version of JDK is 6u2. I have doubted with version of JDK, and I changed to JDK 6u10 but problem is same.
By the way, FTP server in C++ work well on these problem machine.
I think the problem is related with configuration of machine(hardware or software), but I want to know where and why.
Thanks for any help. -
500 Internal Server Error :java.lang.VerifyError
Ok, so I have deployed my BI Bean RC2 tutorial app from Jdeveloper RC2, with no errors during deployment.
It also runs fine from jdeveloper embedded oc4j.
When I try to call the deployed application in my browser I get this:
500 Internal Server Error
java.lang.VerifyError: class org.omg.PortableServer.AdapterActivatorPOA overrides final method . at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.defineClass(ContextClassLoader.java:1004) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.findClass(ContextClassLoader.java:267) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.defineClass(ContextClassLoader.java:1004) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].naming.ContextClassLoader.findClass(ContextClassLoader.java:267) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at com.inprise.vbroker.orb.ORB.adapterManager(ORB.java:1101) at com.inprise.vbroker.ds.DSUser.<init>(DSUser.java:282) at com.inprise.vbroker.ds.Init.init(Init.java:20) at com.inprise.vbroker.orb.ORB.installServices(ORB.java:922) at com.inprise.vbroker.orb.ORB.initialize(ORB.java:831) at com.inprise.vbroker.orb.ORB.set_parameters(ORB.java:950) at org.omg.CORBA.ORB.init(ORB.java:329) at oracle.dss.appmodule.common.ORBUtils.getORBForApplication(ORBUtils.java:109) at oracle.dss.connection.server.ConnectionImpl.getORB(ConnectionImpl.java:1056) at oracle.dss.connection.server.ConnectionImpl.connect(ConnectionImpl.java:263) at oracle.dss.connection.client.Connection.connect(Connection.java:399) at oracle.dss.connection.client.Connection.connect(Connection.java:321) at oracle.dss.metadataManager.client.MetadataManager.setConnectionObjects(MetadataManager.java:3933) at oracle.dss.metadataManager.client.MetadataManager.attach(MetadataManager.java:827) at oracle.dss.metadataManager.client.MetadataManager.attach(MetadataManager.java:767) at oracle.dss.datautil.client.XMLManagerFactory.createQueryManager(XMLManagerFactory.java:187) at oracle.dss.datautil.client.ManagerFactoryImpl.lookupQueryManager(ManagerFactoryImpl.java:176) at oracle.dss.datautil.client.ManagerFactoryImpl.lookupMetadataManager(ManagerFactoryImpl.java:239) at oracle.dss.datautil.client.ManagerFactoryImpl.lookupManager(ManagerFactoryImpl.java:128) at oracle.dss.addins.jspTags.BIThinSession.getMetadataManager(BIThinSession.java:203) at oracle.dss.addins.jspTags.BIThinSession.getQueryManager(BIThinSession.java:226) at oracle.dss.addins.jspTags.BIThinSession.loadView(BIThinSession.java:126) at oracle.dss.addins.jspTags.PresentationTag.createThinObject(PresentationTag.java:142) at oracle.dss.addins.jspTags.BIBaseTag.getThinObject(BIBaseTag.java:76) at oracle.dss.addins.jspTags.PresentationTag.doStartTag(PresentationTag.java:225) at simpleJSP.jspService(_simpleJSP.java:72) [SRC:/simpleJSP.jsp:6] at com.orionserver[Oracle9iAS (9.0.3.0.0) Containers for J2EE].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:304) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:423) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:346) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:691) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:276) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:737) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.run(HttpRequestHandler.java:247) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].util.ThreadPoolThread.run(ThreadPoolThread.java:64)
Nothing (except the 500 error itself) is logged to any of the log-files in j2ee/home/log.
I am able to run all of the samples that comes with oc4j.
oc4j is invoked using:
java -Xmx128m -Dorg.omg.CORBA.ORBClass=com.inprise.vbroker.orb.ORB -Dorg.omg.COR
BA.ORBSingletonClass=com.inprise.vbroker.orb.ORB -jar oc4j.jar &
as specified in tutorial instructions.
Can anyone point me in the right direction to solve this?
Thanks,
JensThe guys over in the J2EE forum came with this answer. Please note that they refer to Jdeveloper 9.0.3.
I don't really know how to interpret that, as the RC2 Jdeveloper is 9.0.2.7.86, but anyway, her goes:
<snip>
It seems like you are using JDeveloper 903, is that right?
Select Help->About from the Jdeveloper menus
If you are using Jdeveloper 903, read on:
This is a known issue. 903 Jdeveloper is bundled with J2EE ORB (IIOP.jar) from Sun to allow EJBs communicate using RMI/IIOP. In addition, we also have Visibroker ORB (VBJORB.jar) in the classpath. Sun has implemented CORBA 2.3.1 specification and Visibroker I believe has implemented CORBA 2.3.0 spec. The signature of one of the methods in class org.omg.PortableServer.AdapterActivatorPOA has changed between the two releases and hence the problem.
We are trying to move away from Visibroker ORB and have requested OLAPI team to remove all dependencies on Visi ORB. Although there is no known dependencies on it, there seems to be dependencies because the idl compiler (from Visibroker) is inserting referces to Visibroker code.
To work around :
Remove/rename iiop.jar file in ORACLE_HOME/J2EE/HOME directory. Be warned that EJB's wont work if it is renamed or removed.
This should only be considered as a temporary work around until we decide our next steps.
</snip>
Use at own risk..
The error reported in this thread disappeared with this workaround, but unfortunately I got another one:
500 Internal Server Error
javax.servlet.jsp.JspException: BIB-10310 An unknown exception occurred.BIB-10101 Handler failed to handle UserObject.java.lang.NullPointerException at oracle.dss.addins.jspTags.PresentationTag.doStartTag(PresentationTag.java:254) at simpleJSP.jspService(_simpleJSP.java:72) [SRC:/simpleJSP.jsp:6] at com.orionserver[Oracle9iAS (9.0.3.0.0) Containers for J2EE].http.OrionHttpJspPage.service(OrionHttpJspPage.java:56) at oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:510) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:257) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:423) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:346) at javax.servlet.http.HttpServlet.service(HttpServlet.java:336) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:691) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:276) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:737) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].server.http.HttpRequestHandler.run(HttpRequestHandler.java:247) at com.evermind[Oracle9iAS (9.0.3.0.0) Containers for J2EE].util.ThreadPoolThread.run(ThreadPoolThread.java:64)
Tips anyone..?
Jens -
500 Internal server error - java.lang.NullPointerException: null
While trying to access the initial login screen of EP, we face this '500 Internal server error - java.lang.NullPointerException: null' issue very randomly. It appears sometimes and when opened from new browser we get the login screen sometimes. It is not a problem that reproduces always. On the screen where the error appears, we refresh any number of times, no help, the error remains the same, but when we open in a new window, it might give the login screen or end up with this error.
We have 4 Dialog Instances and a Cisco load balancer.
Upon repeated redirection to a particular instance and particular server node(https://<hostname>:<port>/irj/portal;sapj2ee_irj= XXX) from the trace files, I could get the following information :-
#0019BBEB9F4C00190000409700001707000478F21B0BBACE#1258881142025#com.sap.tc.webdynpro.sessionmanagement#sap.com/tcwddispwda#com.sap.tc.webdynpro.sessionmanagement.ExceptionHandler.handleThrowable#2449#32347##n/a##245825a0d74711de92700019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_12##0#0#Error#1#/System/UserInterface#Java###Exception occured during processing of Web Dynpro application . The causing exception is nested.
[EXCEPTION]
#2#sap.com/pb/PageBuilder#java.lang.NullPointerException
#1.5_#0019BBEB9F4C00190000409800001707000478F21B0BD29A#1258881142031#com.sap.engine.services.servlets_jsp.client.RequestInfoServer#sap.com/tcwddispwda#com.sap.engine.services.servlets_jsp.client.RequestInfoServer#2449#32347##n/a##245825a0d74711de92700019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_12##0#0#Error##Plain###application [webdynpro/dispatcher] Processing HTTP request to servlet [dispatcher] finished with error. The error is: java.lang.NullPointerException
#1.5_#0019BBEB9F4C00190000409A00001707000478F21B0C5FDE#1258881142068#com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl#sap.com/tcwddispwda#com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl#2449#32347##n/a##245825a0d74711de92700019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_12##0#0#Error#1#/System/Server/WebRequests#Plain###application [webdynpro/dispatcher] Processing HTTP request to servlet [dispatcher] finished with error.
The error is: java.lang.NullPointerException: null
Exception id: [0019BBEB9F4C00190000409800001707000478F21B0BD29A]#
#1.5_#0019BBEB9F4C00310000372500001707000478F21D348764#1258881178254#com.sap.security.core.server.destinations.service.DestinationServiceImpl#sap.com/tcwddispwda#com.sap.security.core.server.destinations.service.DestinationServiceImpl.getDestination#5180#32285##juepp01_EPP_16040550#5180#392ddb50d74711de87f40019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_10##0#0#Error#1#/System/Security/destinations#Java###An error occurred while reading the destination , type . The error was .#3#sap_inbox$WebFlowConnector#RFC#<Localization failed: ResourceBundle='com.sap.exception.io.IOResourceBundle', ID='No such destination sap_inbox$WebFlowConnector of type RFC exists ', Arguments: []> : Can't find resource for bundle java.util.PropertyResourceBundle, key No such destination sap_inbox$WebFlowConnector of type RFC exists #
#1.5_#0019BBEB9F4C00310000372600001707000478F21D34893F#1258881178255#System.err#sap.com/tcwddispwda#System.err#5180#32285##juepp01_EPP_16040550#5180#392ddb50d74711de87f40019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_10##0#0#Error##Plain###java.lang.Exception: Problem occured while creating JCO client for destination: sap_inbox#
#1.5_#0019BBEB9F4C00310000372700001707000478F21D34A80D#1258881178262#System.err#sap.com/tcwddispwda#System.err#5180#32285##juepp01_EPP_16040550#5180#392ddb50d74711de87f40019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_10##0#0#Error##Plain### at com.sap.netweaver.bc.uwl.utils.r3.R3SystemInfo.createJCOClient(R3SystemInfo.java:67)#
#1.5_#0019BBEB9F4C00310000372800001707000478F21D34A887#1258881178263#System.err#sap.com/tcwddispwda#System.err#5180#32285##juepp01_EPP_16040550#5180#392ddb50d74711de87f40019bbeb9f4c#SAPEngine_Application_Thread[impl:3]_10##0#0#Error##Plain### at com.sap.netweaver.bc.uwl.utils.r3.R3SystemInfo.hasFunctionModule(R3SystemInfo.java:591)#
Kindly advise as to what could be the issue..Hi, either the problem should come always for us to be able to trouble shoot it or should not come at all.
Now since it comes sometimes, i feel that you surely are using more than one app. servers in your enviroment and some of them are not fine.
I received this error when i accidently had deleted my sso ticket pairs in the visual admin.
First troubleshoot by login to individual app servers where the issue is coming. after that check the certificate-cert key pair in keystore admin. you can also delete them and make new ticket pairs..
If this does not help, replace your login page with the standard sap login page par com.sap.portal.runtime.logon.par.
This should certainly troubleshoot u
cheers,
Ankur -
Not able to connect to Lotus Domino server using java/corba
Hi
I am new to Lotus Domino server and Java.
I have INstalled Lotus Domino server5 on 1 machine and was successful in installing the Lotus client on another machine.
Throught the lotus client i am able to connect to the server and send and receive the mails.
Now I want to connect to the domino server using the Lotus Domino Tolkit for Java/Corba.
In this Toolkit they have given the sample code program ..
if I run the code I am getting the error
java.io.FileNotFoundException: http://<IPADDRESS>/diiop_ior.txtjava.io.FileNotFoundException: http://<IPADDRESS>/diiop_ior.txt
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLCon
nection.java:691)
at java.net.URL.openStream(URL.java:942)
at lotus.domino.NotesFactory.getIOR(NotesFactory.java:314)
at lotus.domino.NotesFactory.createSession(NotesFactory.java:66)
at IntroCorbaApp.run(IntroCorbaApp.java:65)
at java.lang.Thread.run(Thread.java:539)
lotus.domino.NotesException: Could not get IOR from HTTP Server
lotus.domino.NotesException
at lotus.domino.NotesFactory.getIOR(NotesFactory.java:344)
at lotus.domino.NotesFactory.createSession(NotesFactory.java:66)
at IntroCorbaApp.run(IntroCorbaApp.java:65)
at java.lang.Thread.run(Thread.java:539)
I also tried to find this file in the Domino server directory.
The file exists in drive:\LotusServer\Domino\Data\Domino\HTML directory..
I am not getting what exactly is the Problem
Plz any one help me in this regard..
thanks in advanceYou should be able to access the diiop_ior.txt file from browser without authentication,only then it will work. This file should not
be protected.
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