Servlet crossroad

Hi! I hope you can help me!! I am having this problem. I am working for a multinational information service provider here in Costa Rica.
They have a product that has a web page application. This application is aimed to the telcomunications industry and allows people to send messages via internet to a cell phone (ye, I know it sounds silly at this time...but we are a little behind here...but trying to catch up!! in the next few months). This page contains just two fields...the phone field and the message field and another one that is hidden that is the type of process the user is sending, either if it is a message or a query. This values are send to a servlet via request response and this sesrvlet, that does some calculations and set some variables, calls another class and send the input of the user to that class passing them the request response arguments as parameters.( This servlet does not do a request parameter. That is done by another class).
The local telecom company bought the product but wants to customize it a little bit, mainly allowing people to send the same message not to one, but to five cellphones. And the other one is that they do not want the user to write the phone number. Instead they want to replace that field to an alias field, so the application takes that alias, validates that it exists in the data base, takes the associated phone number and then sends the message, with both the phone number and the message as parameters.
The problem I am having is that I do not have the source code of the product, so I can not make modifications to it. I have already developed the authentication part of the process. The problem tha I have is that the method of the class that sends the message takes a request response parameter, and do not aks for all the parameters send in the request, it just ask for the specified phone field and the message field via the requesParameter method in each case. In my case I do not have problems with the message field because it is indeed in the request, but first of all, the phone mesasge it is not part of the request, the applications takes it from a database, and second of all, even if it was part of the request, the class that sends the message asks just for one phone field. And as I said before, I do not have the resource code, so I can not change that.
I nknow I can put an attribute in the request and send it, but that willnot work because I can not modify the class and I do not even know who it does the work it does.
My question is...is there a way to change the request variable? I thought that if a servlet can take all the five phone number and doing a loop sending a new request to the class that takes the message with just one phone number and one message...but I do not know how to do that or if that can be done...
Can you help me?

Thakn you all for your help. I find the way to add a parameter in the request, so I can modify it and send that new request to the servlet of the product. I just add the two parameter with the name they have in the original html page in one servlet and then pass the new request to the servlet of the telepohe part of the product, and it just woks perfect!!
What I could not do, however, was to send more than one message. That is becuase the servlet calls a class that has a response method that is called every time you send a message and it is presented to the user in an html page. When I call the servlet of the product, I pass the control of the flow to that servelt, so I do not have a way to stop that flow because of the source code problem I already told you.
But I think the client will be just fine not having to present to the final user two pages for the message.

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Get all values from multi select in a servlet

Hello,
I have a multi <select> element in a HTML form and I need to retrieve the values of ALL selected options of this <select> element in a servlet.
HTML code snippet
<select name="elName" id="elName" multiple="multiple">
Servlet code snippet
response.setContentType("text/html");
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What am I doing wrong? I'm fairly new to servlets
Edited by: Irish_Fred on Feb 4, 2010 12:43 PM
Edited by: Irish_Fred on Feb 4, 2010 12:44 PM
Edited by: Irish_Fred on Feb 4, 2010 2:14 PM
Edited by: Irish_Fred on Feb 4, 2010 2:26 PM
Edited by: Irish_Fred on Feb 4, 2010 2:26 PM
Edited by: Irish_Fred on Feb 4, 2010 2:32 PM

I am using AJAX.
I will show you how I'm submitting the <select> values by showing you the flow of code:
This is the HTML code for the <select> tag and the button that sends the form data:
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</form>Note that the "visibility:hidden" part of the button style is set to "visible" when at least one option is selected
Note that "jsObj" relates to a java script object that has been created when the web app starts ( The .js file is included in the .jsp <head> tag )
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Edited by: Irish_Fred on Feb 7, 2010 10:53 AM

Open Jasper Report in new page using servlet

Guys,
Looks very simple but i am having problem making this process work. I am using 11.1.1.4
This is my use case:
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I can successfully call servlet using commandmenuitem and set request parameters and call servlet from backing bean.... but that doesn't open report in a new page.... any way i can do this?
Another option i tried was that using gomenuitem and setting target=blank but in that case i need to pass the parameter using servlet url which i like to avoid.(in case i need to pass many parameters in future) (also values will be set on page so i need to generate url when then click the menuitem...... so there are some hoops and loops i need to go through) I don't know a way to pass the request parameter using backing bean to servlet... i don't think it is possible.
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Edited by: polo on Dec 13, 2011 7:22 AM

Hi,
Hope following will useful
http://sameh-nassar.blogspot.com/2009/10/using-jasper-reports-with-jdeveloper.html
http://www.gebs.ro/blog/oracle/jasper-reports-in-adf/

How can i execute ejb method in a servlet?

hi
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thanks

Have your stubs somehow got out of sync? So that your Servlet engine is pointing to a different jar than that of your jvm on which you were running your client application
hi
I am using a IBM HTTP Server and Weblogic Server.
I could execute below source in a main method of
application but i could not that in a init method of
servlet because of ClassCastException.
(a classpath of weblogic contains client's classpath)
// source code
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props.pu(Context.INITIAL_CONTEXT_FACTORY,
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props.put(Context.PROVIDER_URL,
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Object obj = ctx.lookup("session.LigerSessionHome");
LigerSessionHome home = (LigerSessionHome)
PortableRemoteObject.narrow (obj,
LigerSessionHome.class);
// error code
Exception :
session.LigerSessionBeanHomeImpl_ServiceStub
java.lang.ClassCastException:
session.LigerSessionBeanHomeImpl_ServiceStub
at
com.ibm.rmi.javax.rmi.PortableRemoteObject.narrow(Porta
leRemoteObject.java:253)
at
javax.rmi.PortableRemoteObject.narrow(PortableRemoteObj
ct.java:136)
at credit.getCreditResearch(credit.java:41)
at
creditResearchClient.doGet(creditResearchClient.java:12
at
javax.servlet.http.HttpServlet.service(HttpServlet.java
740)
at
javax.servlet.http.HttpServlet.service(HttpServlet.java
865)
thanks

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Refer Note:280376.1 on MetaLink. Hope this will help you resolve the issue.
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Hi,
I tried to create an excel through POI 3.5 using a simple java program. I am getting the same error when i try to open it.Below is my code. Kindly let me know the problem.
I am getting the error ""The file you are trying to open .xlsx is in a different format than specified by the file extension. verify the file is not corrupted and is from trusted source before opening the file. Do you want to open the file now?" when opening the .xlsx file.
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import java.io.File;
import java.io.IOException;
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import org.apache.poi.hssf.usermodel.HSSFSheet;
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Hi,
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bye
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You need to add the JAR containing the servlet API in the external JARs for the project.
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Thanks
Andre

You have to lookup for "ExponentMappingService", and not "ExponentMappingServiceHome"
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Hi people,
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Server: 220 mx.google.com ESMTP g28sm19313024fkg.21
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String to = request.getParameter("to");
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2. ist this right in case of googlemail.com?
smtpSocket = new Socket("smtp.googlemail.com", 25); I would be very grateful if somebody can help me.

jackofall
Please don't post in old threads that are long dead. When you have a question, please start a topic of your own. Feel free to provide a link to an old thread if relevant.
I'm locking this thread now.
db

Couldn't Load DLL and Call JNI in Portal Servlet !!!

Hello,
I'm trying to write a small test servlet in portal which will call functions in a DLL using JNI. Here is my source code. I put my DLL in \Window\system32, usr/sap/J2E/JC01/j2ee/os_libs, even included into my portal project \PORTAL-INF\lib. But everytime when I try to preview my page, I got the following error and I couldn't find the log file specified in the error message. Please help me out. Thanks a lot!
Portal Runtime Error
An exception occurred while processing a request for :
iView : N/A
Component Name : N/A
MyTestDLL.
Exception id: 12:25_23/12/06_0029_11241950
See the details for the exception ID in the log file
Source Code:
import com.sapportals.portal.prt.component.*;
public class CIViewTest extends AbstractPortalComponent
     public void doContent(IPortalComponentRequest request, IPortalComponentResponse response)
          response.write("Hello From Java Servlet!!!\n");
     static {
          try {
               Runtime.getRuntime().loadLibrary("MyTestDLL");
// I've also tried System.LoadLibrary("MyTestDLL");
          } catch (UnsatisfiedLinkError ule) {
               throw ule;

Nobody used JNI in Portal Servlet??? Please advice. Thanks!

Can't connect a servlet to a mysql database (jdbc)

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
public class LoginServletJDBC extends HttpServlet{
     public void doGet(HttpServletRequest request,HttpServletResponse response)
     throws ServletException,IOException{
          sendLoginForm(response,false);     }
     public void sendLoginForm(HttpServletResponse response,boolean error)
     throws ServletException,IOException{
          response.setContentType("text/html");
          PrintWriter out = response.getWriter();
          out.println("<html><head>");
          out.println("<title>Login</title>");
          out.println("</head>");
          out.println("<body>");
          out.println("<center>");
          if(error)
               out.println("<b>Failed login. Please try again</b>");
          out.println("<br><br>");
          out.println("<h2>Login page</h2>");
          out.println("<br>Please enter your username and password");
          out.println("<br><br>");
          out.println("<form method=post>");
          out.println("<table>");
          out.println("<tr>");
          out.println("<td>Username : </td>");
          out.println("<td><input type=text name=userName></td>");
          out.println("</tr>");
          out.println("<tr>");
          out.println("<td>Password : </td>");
          out.println("<td><input type=password name=password></td>");
          out.println("</tr>");
          out.println("<tr>");
          out.println("<td align=right colspan=3>");
          out.println("<input type=submit value=Login></td>");
          out.println("</tr>");
          out.println("</table>");
          out.println("</form>");
          out.println("</center>");
          out.println("</body></html>");
public void doPost(HttpServletRequest request,HttpServletResponse response)
     throws ServletException,IOException{
          String userName = request.getParameter("userName");
          String password = request.getParameter("password");
          if(login(userName,password)){
               RequestDispatcher rd = request.getRequestDispatcher("AnotherServlet");
               rd.forward(request,response);
          else{
               sendLoginForm(response,true);
     boolean login(String userName,String password){
          try{
               String url = "jdbc:mysql://localhost:3306/Users";
               Class.forName("com.mysql.jdbc.Driver");
               Connection con = DriverManager.getConnection(url,"root","");
               //System.out.println("got connection");
               Statement s = con.createStatement();
               String sql = "select userName from Users where userName='"+userName+"and password='"+password+"';";
               ResultSet rs = s.executeQuery(sql);
               if(rs.next()){
                    rs.close();
                    s.close();
                    con.close();
                    return true;
               rs.close();
               s.close();
               con.close();
          catch(ClassNotFoundException e){
               System.out.println(e.toString());
          catch(SQLException e){
               System.out.println(e.toString());
          catch(Exception e){
               System.out.println(e.toString());
          return false;
}so ...
here i'm trying to connect to Users mysql database (i use Tomcat 4.1 and mysql servers and clients 4.0.1-alpha)
where is the problem ? when i run this servlet (http://localhost:8080/example/servlet/LoginServletJDBC ) it works ;
BUT when i type an username and a password (any user&pass) my servlet doesn't connect to the database (become a infinite loop without output ; i mean no any errors and exceptions)
i try other think : i changed the database with unexisting database and the result was that i was expected (Unknow database 'unexistingdatabase' )
what i miss ?
please... can anyone help me...
thank`s in advance

The wireless security setting that the Actiontec modem/router is using may be different...and not compatible....than the setting that the Comcast product was using.
If you think that might the case, and you have the time to troubleshoot......
Temporarily, turn off the wireless security on the Actiontec modem/router
Reset an AirPort Express back to default settings, then see if it will connect using no security and allow an Internet connection when you do the Ethernet port test in the post above again.
If the AirPort Express cannot connect correctly using no security on the wireless network.....then it is a no brainer to know that it will never connect when security is enabled. So, if the AirPort will not connect using no security, you may have an incompatibility issue between the Actiontec and Apple products.
However, if the AirPort Express connects OK with no security, then this tells you that you will need to use a different setting for security on the Actiontec...the same that the Comcast router was using before.....so the Express will have a better chance of connecting.
That setting would be something like WPA/WPA2 Personal, or the same setting stated another way would be WPA-PSK-TKIP.

Https Connection from servlets using JSSE.

Hi all,
Although my question is the same as the QOW for this week, there is an error "unsupported keyword EMAIL" returned when i try to establish a https connection using servlet. The error log is as follow:
=====================================
java.io.IOException: unsupported keyword EMAIL
at com.sun.net.ssl.internal.ssl.AVA.<init>([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.ssl.RDN.<init>([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.ssl.X500Name.a([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.ssl.X500Name.<init>([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.www.protocol.https.HttpsClient.a([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.www.protocol.https.HttpsClient.a([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.www.protocol.https.HttpsClient.a([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnection.connect([DashoPro-V1.2-120198])
at com.sun.net.ssl.internal.www.protocol.https.HttpsURLConnection.getInputStream([DashoPro-V1.2-120198])
at URLReader.doGet(URLReader.java:78)
===================================
Does anyone know the meaning of this error?
I try to write a java application using the similar code and it totally works fine(i can connect to the server and obtain the page). Does JSSE support Java Servlet? Or this is the problem of tomcat server? FYI, I'm using
Tomcat 3.2.2
Java SDK 1.3
Many thanks!
Ethan
p.s. Here is the source for my program
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.net.*;
import javax.net.ssl.*;
import com.sun.net.ssl.*;
public class URLReader extends HttpServlet{
private PrintWriter out = null;
public void doGet(HttpServletRequest req, HttpServletResponse res){
res.setContentType("text/html");
res.setHeader("Cache-Control", "no-cache");
res.setHeader("Progma", "no-cache");
out = res.getWriter();
java.security.Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
System.setProperty("javax.net.ssl.trustStore", "File_for_keyStore");
System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
try {
     URL url = new URL("https://server_name:port/index.htm");
     HttpsURLConnection urlconnection = (HttpsURLConnection)url.openConnection();
     BufferedReader in = new BufferedReader(new InputStreamReader(urlconnection.getInputStream()));
     String outputLine ;
     while ( (outputLine = in.readLine()) != null){
     out.println("There is the result: "+outputLine);
     in.close();
catch(Exception e){
public void doPost(HttpServletRequest req, HttpServletResponse res){
}

I was just having this issue, after months of error-free ssl behavior, on a new machine i was installing (Note: that I was running the IBM jdk1.3) It turns out that when I was editing the java.security file to know about JCE/JSSE providers i had the providers in the wrong order. The Error causing sequence was:
security.provider.1=com.sun.net.ssl.internal.ssl.Provider
security.provider.2=com.ibm.crypto.provider.IBMJCA
# Extra provider added ibm@33894
security.provider.3=com.ibm.crypto.provider.IBMJCE
# extra provider i added
security.provider.4=sun.security.provider.Sun
The issue disappeared when i changed the order to:
security.provider.1=sun.security.provider.Sun
security.provider.2=com.sun.net.ssl.internal.ssl.Provider
security.provider.3=com.ibm.crypto.provider.IBMJCA
# Extra provider added ibm@33894
security.provider.4=com.ibm.crypto.provider.IBMJCE
hope that helps!
--john molnar
Trellis Network Security

Servlet crossroad

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