Servlet problem - rwexec?

We are having a problem configuring Reports Server using the RWServlet. It appears to be looking for some native method called rwexec. Does anyone know what this is all about?

Can u please elaborate the steps u have gone thru.

Similar Messages

Mildet connect to oracle DB using servlet problem ,help please

hi guys i have a problem am tring to connect my midlet to databse through midlet but i don`t know what is the problem so far the midlet already connect to my servlet url but the servlet cant read the parameters to open the connection for database
my servlet code
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* and open the template in the editor.
import java.io.*;
import java.net.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.text.*;
* @author freddy
public class getconnection extends HttpServlet {
    Statement statement;
ResultSet rs=null;
String bstr=null;
String bstr1=null;
String bstr2=null;
public void init()
    * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
    * @param request servlet request
    * @param response servlet response
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet getConnection</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet getConnection at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
        } finally {
            out.close();
    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    * Handles the HTTP <code>GET</code> method.
    * @param request servlet request
    * @param response servlet response
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
doPost(request,response);
    * Handles the HTTP <code>POST</code> method.
    * @param request servlet request
    * @param response servlet response
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        processRequest(request, response);
        DataInputStream in = new DataInputStream(
                (InputStream)request.getInputStream());
        String sid = in.readUTF();
        String user = in.readUTF();
        String pwd = in.readUTF();
      // "jdbc:oracle:thin:@localhost:1521"+": "+sid
        String message = message = "Name:"+bstr+" telephone:"+bstr1+" burthday:"+bstr2;
         try {
            connect(sid,user, pwd);
            message += "100 ok connected";
        } catch (Throwable t) {
            message += "200 " + t.toString();
        response.setContentType("text/plain");
        response.setContentLength(message.length());
        PrintWriter out = response.getWriter();
        out.println(message);
        in.close();
        out.close();
        out.flush();
    private void connect(String sid, String user,String pwd)
    throws Exception {
        // Establish a JDBC connection to the MYSQL database server.
        //Class.forName("org.gjt.mm.mysql.Driver");
        Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
        Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:"+sid,user,pwd);
        System.out.print("connected");
        try{
           statement =conn.createStatement();
            rs=statement.executeQuery(" Select*from WOH.P_DEMGRAPHICS where P_ID='P1000 '");
        catch(SQLException e)
        System.err.print(e);
       try{
while (rs.next()) {
bstr=rs.getString(2);
bstr1=rs.getString(3);
bstr2=rs.getString(4);
statement.close();
   catch (SQLException e) {
//bstr += e.toString();
System.err.println(e);
System.exit(1);
        // Establish a JDBC connection to the Oracle database server.
        //DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
        //Connection conn = DriverManager.getConnection(
        //      "jdbc:oracle:thin:@localhost:1521:"+db,user,pwd);
        // Establish a JDBC connection to the SQL database server.
        //Class.forName("net.sourceforge.jtds.jdbc.Driver");
        //Connection conn = DriverManager.getConnection(
        //      "jdbc:jtds:sqlserver://localhost:1433/"+db,user,pwd);
    * Returns a short description of the servlet.
    public String getServletInfo() {
        return "Short description";
    // </editor-fold>
}Midlet code
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* and open the template in the editor.
import java.io.*;
import java.util.*;
import javax.microedition.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
* @author freddy
public class testOrcl extends MIDlet implements CommandListener {
   protected String url;
    private String username;
    private Display display;
    private Command exit = new Command("EXIT", Command.EXIT, 1);;
    private Command connect = new Command("Connect", Command.SCREEN, 1);
    private TextField tb;
    private Form menu;
    private TextField tb1;
    private TextField tb2;
    DB db;
    public testOrcl() throws Exception
        display=Display.getDisplay(this);
        url="http://localhost:8084/getConnection/getconnection";
    public void startApp() {
        displayMenu();
    public void displayMenu()
    menu= new Form("connect");
     tb = new TextField("Please input database: ","",30,
                TextField.ANY );
        tb1 = new TextField("Please input username: ","",30,
                TextField.ANY);
        tb2 = new TextField("Please input password: ","",30,
                TextField.PASSWORD);
        menu.append(tb);
        menu.append(tb1);
        menu.append(tb2);
        menu.addCommand(exit);
        menu.addCommand(connect);
        menu.setCommandListener(this);
        display.setCurrent(menu);
    public void pauseApp() {
    public void destroyApp(boolean unconditional) { }
    public void commandAction(Command command, Displayable screen) {
        if (command == exit) {
            destroyApp(false);
            notifyDestroyed();
        } else if (command == connect) {
            db = new DB(this);
            db.start();
            db.connectDb(tb.getString(),tb1.getString(),tb2.getString());
* To change this template, choose Tools | Templates
* and open the template in the editor.
import java.io.*;
import java.util.*;
import javax.microedition.io.*;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import java.lang.*;
* @author freddy
public class DB implements Runnable {
    testOrcl midlet;
     private Display display;
        String sid;
        String user;
        String pwd;
        public DB( testOrcl midlet)
        this.midlet=midlet;
        display=Display.getDisplay(midlet);
    public void start()
    Thread t = new Thread(this);
            t.start();
    public void run()
     StringBuffer sb = new StringBuffer();
            try {
                HttpConnection c = (HttpConnection) Connector.open(midlet.url);
               c.setRequestProperty(
                   "User-Agent","Profile/MIDP-2.1, Configuration/CLDC-1.1");
                c.setRequestProperty("Content-Language","en-US");
                c.setRequestMethod(HttpConnection.POST);
                DataOutputStream os =
                        (DataOutputStream)c.openDataOutputStream();
                os.writeUTF(sid.trim());
                os.writeUTF(user.trim());
                os.writeUTF(pwd.trim());
                os.flush();
                os.close();
                // Get the response from the servlet page.
                DataInputStream is =(DataInputStream)c.openDataInputStream();
                //is = c.openInputStream();
                int ch;
                sb = new StringBuffer();
                while ((ch = is.read()) != -1) {
                    sb.append((char)ch);
           showAlert(sb.toString());
                is.close();
                c.close();
            } catch (Exception e) {
                showAlert(e.getMessage());
     /* This method takes input from user like db,user and pwd and pass
            to servlet */
        public void connectDb(String sid,String user,String pwd) {
            this.sid = sid;
            this.user = user;
            this.pwd = pwd;
        /* Display Error On screen*/
        private void showAlert(String err) {
            Alert a = new Alert("");
            a.setString(err);
            a.setTimeout(Alert.FOREVER);
            display.setCurrent(a);


Comment out process request or rewrite & move it to a position after you read the parameters and connect to the db. Decide where you want to write to the output stream. Also, you have some superfluous casting.
I take it that you are using netbeans? If you debug and step through the code you will get an idea of the flow. The steps should be, midlet connects with POST, doPost is called, server reads parameters, server opens connection, executes query, releases/closes connection, and writes a response to the midlet.
Some notes about the connect method; The scope of rs may cause problems. It is unlike you will have a valid result set if you have a problem with create statement or execute. Take a look at connection pooling and be mindful how the connections are opened, used, and closed; put all the important cleanup operations in a finally. Remove system.exit from your servlet. Actually I would suggest limiting the scope of all your vars;
If you store the username, password, and sid on the midlet, you may have trouble updating the installation base if you need to change the values for any reason. Also, you have clients which contain your database u/p, susceptible to snooping and decompilation. Use the servlet to abstract the db from the client. And use a datasource (with connection pooling) for obtaining connections to db.

Servlet problem: (Shay Shmeltzer / Steve Muench / Frank Nimphius)

Dear sirs... (Shay Shmeltzer / Steve Muench / Frank Nimphius)
I hope you can give me an answer.
I created an ADF UIX application using JDeveloper 10.1.2. I have created a servlet to download files. my problem is that it works just fine using jdeveloper, while when deployed into oracle application server it causes errors.i am calling this servlet by storing filename and data in the session, then sending redirect request to the browser.
the servlet code is:
package view;
import java.io.OutputStream;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.PrintWriter;
import java.io.IOException;
public class FileDownload extends HttpServlet
public void init(ServletConfig config) throws ServletException
super.init(config);
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
try
String DownloadFileName=(String) request.getSession().getAttribute("downloadfilename");
byte data[]=(byte []) request.getSession().getAttribute("downloadfiledata");
if (DownloadFileName==null)
return;
request.getSession().removeAttribute("downloadfilename");
request.getSession().removeAttribute("downloadfiledata");
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename="+DownloadFileName);
response.setContentLength(data.length);
OutputStream OS=response.getOutputStream();
OS.write(data);
catch (Exception e)
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
try
String DownloadFileName=(String) request.getSession().getAttribute("downloadfilename");
byte data[]=(byte []) request.getSession().getAttribute("downloadfiledata");
if (DownloadFileName==null)
return;
request.getSession().removeAttribute("downloadfilename");
request.getSession().removeAttribute("downloadfiledata");
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename="+DownloadFileName);
response.setContentLength(data.length);
OutputStream OS=response.getOutputStream();
OS.write(data);
catch (Exception e)
and the error is :
java.lang.IllegalStateException: Response has already been committed
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.EvermindHttpServletResponse.resetBuffer(EvermindHttpServletResponse.java:1902)
at com.evermind[Oracle Application Server Containers for J2EE 10g (10.1.2.0.2)].server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:213)
this error is stored in the log file. if i am running this code from JDeveloper I can download the files using either FireFox or Internet Explorer without any error.
but if i am running this code using Oracle Application Server 10g Realse 2, i can not download the files using either FireFox or IE.
so i created another solution, instead of redirecting from a datapage into the servlet, i put the following code in a data page as follows:
public void onDownload(DataActionContext ctx)
String DownloadFileName=getfilename();
byte data[]=getdata();
response.setContentType("application/octet-stream");
response.setHeader("Content-Disposition", "attachment;filename="+DownloadFileName);
response.setContentLength(data.length);
OutputStream OS=response.getOutputStream();
OS.write(data);
OS.flash();
this time the application works fine when deployed into Oracle Application Server if you use FireFox, but if you use IE, it causes problem, i can not save the file or view it.
what is the problem?
how can i fix this?
i am certin that the second method is not correct and it should not be used.
thanks for everyone in advance
best regards

Dear Sir...
Thanks alot for your replay
regarding the reset method. Itried it and it does not give any good.
I discovered the following problem:
If you are redirecting from with struts dataaction page to the servlet, you get the error
Otherwise if you called the servlet from directly or redirected to a servlet from within a servlet, you get no problem.
can any one help me please??
Is it possible that the problem is in IE itself? The file is downloaded perfectly fine with firefox(but the error log still appear)?
best regards

Need urgent help on file download servlet problem in Internet Explore

I have trouble to make my download servlet work in Internet Explore. I have gone through all the previous postings and done some research on the internet, but still can't figure out the solution. <br>
I have a jsp page called "download.jsp" which contains a URL to download a file from the server, and I wrote a servlet (called DownloadServlet) to look up the corresponding file from the database based on the URL and write the file to the HTTP output to send it back to the browser. <br>
the URL in download.jsp is coded like <a href="/download/<%= currentDoc.doc_id %>/<%= currentDoc.name %>">on the browser, it will be sth like , the number 87 is my internal unique number for a file, and "myfile.doc" is the real document name. <br>
in my web.xml, "/download/" is mapped to DownloadServlet <br>
the downloadServlet.java looks like
tem_name = ... //read DB for file name
// set content type
if ( tmp_name.endsWith(".doc")) {
response.setContentType("application/msword");
else if ( tmp_name.endsWith(".pdf")){
response.setContentType("application/pdf");
else if ( tmp_name.endsWith(".ppt")){
response.setContentType("application/vnd.ms-powerpoint");
else if ( tmp_name.endsWith(".xls")){
response.setContentType("application/vnd.ms-excel");
else {
response.setContentType("application/download");
// set HTTP header
response.setHeader("Content-Disposition",
"attachment; filename=\""+tmp_name+"\"");
OutputStream os = response.getOutputStream();
//read local file and write back to browser
int i;
while ((i = is.read()) != -1) {
os.write (i);
os.flush();
Everything works fine in Netscape 7.0, when I click on the link, Netscape prompts me to choose "open using Word" or "save this file to disk". That's exactly the behavior I want. <br>
However in IE 5.50, the behavior is VERY STRANGE.
First, when I click on the URL, the popup window asks me to "open the file from its current location" or "save the file to disk". It also says "You have chosen to download a file from this location, ...(some url).. from localhost"
(1) If I choose "save the file to disk", it will save the rendered "download.jsp" (ie, the currect page with URL I just clicked, which isn't what I want).
(2)But if I choose "open the file from its current location", the 2nd popup window replaces the 1st, which also has the "Open ..." and "Save.." options, but it says "You have chosen to download a file from this location, MYFILE.doc from localhost". (notice it shows the correct file name now)
(3) If I choose "Save..." on the 2nd window, IE will save the correct file which is "myfile.doc"; if I choose "Open ...", a 3rd replaces the 2nd window, and they look the same, and when I choose "Open..." on the 3rd window, IE will use Word to open it.
any ideas?
</a>

Did you find a solution to this problem? I've been wrestling with the same issues for the past six months. Nothing I try seems to work. I've tried setting the contentLength(), inline vs. attachments, different write algorythms, etc. I don't get the suggestion to rename the servlet to a pdf file.

Servlets - problem with session

Hi there ppl,
I have a login servlet which is called form a link in a static html page. The doGet() method is as below:
public void doGet(HttpServletRequest request,
          HttpServletResponse response)
     throws ServletException, java.io.IOException
     HttpSession session = public void doGet(HttpServletRequest request,
                              HttpServletResponse response)
                              throws ServletException, java.io.IOException
          HttpSession session = request.getSession(false);
          RequestDispatcher rd = request.getRequestDispatcher("/login.jsp");
          response.setContentType("text/html");
          //PrintWriter out = response.getWriter();
          if(session != null){
               //display members page(with users name as a welcome)
               System.out.println("in login servletb");
          else{
               System.out.println("in login servlet");
               request.setAttribute("membersName", "adom");
               rd.forward(request, response);
               //out.close();
     RequestDispatcher rd = request.getRequestDispatcher("/login.jsp");
     if(session != null){
     //display members page(with users name as a welcome)
     System.out.println("session exists");
     else{
     System.out.println("session not exisit");
     request.setAttribute("membersName", "adom");
     rd.forward(request, response);
Problem is when i click on the link in the html page it goes into tthe else statement and displays the login.jsp page fine. But when i click bak on the browser and then click the link agian it goes into the if statemtn..as if a session exists. But why does a session exisit???...if i use request.getSession(false) this shouldnt create a session if one doent already exists so where is this mysterious session being created??
any ideas would be greatly appreaciated
Mycall

yer i do need the session because in my doPost() method of the servlet i create a session once the user logs on with there login/pass. The doGet() method is only to direct the person to the login page. But i want to check for the session in the doGet() incase they have already login in...if so direct them to the main page rather than to the login page agian.
I stuffed up the code in my previous post...everything compiles and works fine apart from the fact that a session is created when it shouldnt be. I did a test println with session.getCreationTime() and it was created the same time the servlet was initial called. However im not sure if it was created by my servlet or if the broswer somehow had something to do with it....hmm is a worry.
Heres the code again...hopefully a bit neater for u :D
public void doGet(HttpServletRequest request, HttpServletResponse reponse)throws ServletException, java.io.IOException{
HttpSession session = request.getSession(false);
RequestDispatcher rd = request.getRequestDispatcher("/login.jsp");
if(session != null){
//display members page(with users name as a welcome)
System.out.println("session exists");
else{
System.out.println("no session");
request.setAttribute("membersName", "adom");
rd.forward(request, response);
thanks agian :)

J_security_check servlet problems

Hi, we use forms based authentication in our web app and I've come across some bizarre behavior in j_security_check.
The problem is as follows: if a user goes to a form that is within our web application and sits on that form until their session times out, then decides to submit that form (triggering an HTTP POST), then iPlanet correctly displays the forms based login page. The problem hoewver is that after the user puts in their credentials and authenticates, iPlanet's j_security_check forgets where it was (the form page, call it foo.jsp for now) and it forgets where the data was being submitted to (we'll call it submitfoo.jsp for now). Furthermore the data is lost. What j_security_check ends up doing is somehow redirecting to the root of the web application, which in our case ends up displaying the stupid directory listing of our web app. We dont' have an index.html or index.jsp in our web app root and suppressing directory listings in iPlanet is not trivial (if someone knows how to do this reliably, apart from creating an index.html in all the directories i want suppressed, please let me know).
Soooo, does iPlanet consider this a bug with the j_security_check servlet used for form based authentication or is this a "feature" they offer? how can i as a developer get j_security_check to forward to a page other than what it decides?
Thanks,
Ryan

Hi, we use forms based authentication in our web app and I've come across some bizarre behavior in j_security_check.
The problem is as follows: if a user goes to a form that is within our web application and sits on that form until their session times out, then decides to submit that form (triggering an HTTP POST), then iPlanet correctly displays the forms based login page. The problem hoewver is that after the user puts in their credentials and authenticates, iPlanet's j_security_check forgets where it was (the form page, call it foo.jsp for now) and it forgets where the data was being submitted to (we'll call it submitfoo.jsp for now). Furthermore the data is lost. What j_security_check ends up doing is somehow redirecting to the root of the web application, which in our case ends up displaying the stupid directory listing of our web app. We dont' have an index.html or index.jsp in our web app root and suppressing directory listings in iPlanet is not trivial (if someone knows how to do this reliably, apart from creating an index.html in all the directories i want suppressed, please let me know).
Soooo, does iPlanet consider this a bug with the j_security_check servlet used for form based authentication or is this a "feature" they offer? how can i as a developer get j_security_check to forward to a page other than what it decides?
Thanks,
Ryan

Import my own class into servlet problem

Hello, everyone.. I fail to import java classes that i create myself into the servlet. I wonder what is the problem. I would feel grateful if anyone can solve my problem. I noe that if it is in the package let say myclass , C:\jakarta-tomcat-4.1.29\webapps\lis\WEB-INF\classes\myclass. It will be
package myclass;
import myclass.*;
But, I put all my class file into below directory not in a package.
C:\jakarta-tomcat-4.1.29\webapps\lis\WEB-INF\classes
and i wish to include let say DBManager.class file into Login.class file which in in the same directory as above. What is the correct code i should put? Thanks for anyone who willing to help me out ~

You don't need to import classes from the same package. They are automatically available in the same namespace. Just use them.
package myclasses;
import myclasses.*; // this line does nothing
import myctherclasses.*; // this line is necessary to use classes from another package.Having said that though, it is always preferable to put your classes in a package. Classes in the "unnamed" package are not guarunteed to be available anymore.
Particularly servlet classes which are not in a package aren't found by Tomcat.
In short: always put your classes into packages.
Cheers,
evnafets

Calling servlet problem in iPlanet web server.

Hello, friends.
I have installed iPlanet web server 6.0. After installation I am using the default virtual server only. Thus, for all testing pages also, I use the default Document Root only (C:\iplanet\servers\docs\testsite) (I think, here "docs" is the default document root, right? If I am wrong, please correct me). I have got 2 JSP pages and 1 servlet. I put the JSP pages, into "testsite" folder and put the servlet into a folder called "myservlets" (C:iplanet\servers\docs\myservlets).
The jsp1.jsp page calls the servlet.class and in return the servlet redirects to jsp2.jsp page.
My question is: what paths should I use in jsp1.jsp file and in servlet.class file?
Thanks in Advance for all your help,
~ Nirav

There is a major security breach in authenticating
iPlanet Web Server 6.0 SP3 and SP4 using Sun ONE
Directory Server. Using a valid user id, any
password except null string would allow user access
the restricted resources. iPlanet Web Server 6.0 SP5
and 4.1 SP12 worked fine with similar configuration.Did you get an answer for this?
We are having the exact same problems with our iPlanet Web server 6.0 SP3.
thank you.

JDBC Servlet Problem

Hi,
I am trying to write a servlet to do a simple query against a database, however I am getting an "ERROR 405 - Resource not allowed".
I am getting nothing appearing in my webservers or the jdbc log, so I don't have a stack trace to show you all.
Any help would be appreaciated!!
Code Below (certain data removed for security):
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.sql.ResultSet.*;
import java.util.*;
import java.util.Arrays;
public class Mitch extends HttpServlet
private Connection connection;
private Statement statement;
public static ArrayList Array = new ArrayList();
    public void init( ServletConfig config ) throws ServletException
        try
            String username = "xxxxxxx";
            String password = "xxxxxxx";
            Class.forName("com.ibm.db2.jcc.DB2Driver");
            String dbURL = "jdbc:db2://IP ADDRESS AND PORT/DIR";
            Properties conProps = new Properties();
            conProps.setProperty( "user", username );
            conProps.setProperty( "password", password );
            connection = DriverManager.getConnection( dbURL, conProps );
            statement = connection.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE );
       catch( Exception exception )
           exception.printStackTrace();
           throw new UnavailableException( exception.getMessage() );
    }//end init
    protected void doPost( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
        response.setContentType( "text/html" );
        PrintWriter out = response.getWriter();
        out.println( "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">\n" );
        out.println( "<HTML>\n<HEAD>" );
        String sqlQuery;
        try
            sqlQuery = "SELECT h5_cpu_usr FROM ps_h5_cpu_fs_ap1 WHERE h5_dttm_stamp BETWEEN '2005-2-20 00:00:00.00000' AND '2005-2-20 23:00:00.000000'";
            ResultSet resultSet = statement.executeQuery( sqlQuery );
            out.println( "<TITLE> Servlet DB Test by Mitch </TITLE>" );
            out.println( "</HEAD>" );
            out.println( "<BODY>" );
            out.println( "<P>This is a test to connect to a database, execute a simple SELECT and display the results below." );
            out.println( "<br>\n<br>" );
            Integer intObject;
            while ( resultSet.next() )
               intObject = new Integer( resultSet.getInt( 1 ) );
               Array.add( intObject );
            resultSet.close();
            for( int i = 0; i < Array.size(); i++)
             out.println(Array.get(i));
            out.close();
        }//end try
        catch ( SQLException sqlEx )
            sqlEx.printStackTrace();
            out.println( "<TITLE>ERROR</TITLE>" );
            out.println( "<HEAD>" );
            out.println( "<BODY><P>An error occurred.<br>Contact Mitch!" );
            out.println( "</P></BODY></HTML>" );
            out.close();
    }//doPost end
    public void destroy()
        try
            statement.close();
            connection.close();
        catch( SQLException sqlEx )
            sqlEx.printStackTrace();
    }//end destroy
}//end Class


Thank you both for your replies
1. Yes I did.
2 See below
I found some sample code that I adapted to my code. I removed the init( ) method and used a doGet ( ) to call my doPost ( ) method.
The servlet now works!
Except for one thing...
It doesn't seem to be threading!
I did a simple test where two different users attempted to use the servlet at the same time, the results simply added to each other. The current query I am doing is one that returns approximately 100 rows and 1 column of 2-digit integers.
For example:
User 1 runs the servlet, output is:
12 45 56 66 65 23 06 03 34 56 78
User 2 runs the servlet after User 1, output is:
12 45 56 66 65 23 06 03 34 56 78 12 45 56 66 65 23 06 03 34 56 78
User 1 runs servlet again, after User 2, output is:
12 45 56 66 65 23 06 03 34 56 78 12 45 56 66 65 23 06 03 34 56 78 12 45 56 66 65 23 06 03 34 56 78
I hope this illustrates my problem clearly.
Also, I checked the database to see how many connections were open -- the servlet opens a NEW connection for EVERY query. These connections do not die until I kill my WebApp (WebLogic). It truely is a messy situation.
Any help would be appreaciated for this servlet newbie.
Thanks in advance.
New Code:
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import java.sql.ResultSet.*;
import java.util.*;
import java.util.Arrays;
public class Mitch extends HttpServlet
public static ArrayList Array = new ArrayList();
Connection connection;
Statement statement;
String username = "xxxxxxx";
String password = "xxxxxxx";
    protected synchronized void doGet( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
      doPost ( request, response );
    protected void doPost( HttpServletRequest request, HttpServletResponse response ) throws ServletException, IOException
        //HttpSession session = request.getSession(true);
        response.setContentType( "text/html" );
        PrintWriter out = response.getWriter();
        out.println( "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 Transitional//EN\">\n" );
        out.println( "<HTML>\n<HEAD>" );
        String sqlQuery;
        //if(session.isNew())
        try
            Class.forName("com.ibm.db2.jcc.DB2Driver");
            String dbURL = "jdbc:db2://xx.xx.xx.xx:yyyyy/zzzzzzz";
            connection = DriverManager.getConnection( dbURL, username, password );
            statement = connection.createStatement( ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE );
            sqlQuery = "SELECT h5_cpu_usr FROM ps_h5_cpu_fs_ap1 WHERE h5_dttm_stamp BETWEEN '2005-2-20 00:00:00.00000' AND '2005-2-20 23:00:00.000000'";
            ResultSet resultSet = statement.executeQuery( sqlQuery );
            out.println( "<TITLE> Servlet DB Test by Mitch </TITLE>" );
            out.println( "</HEAD>" );
            out.println( "<BODY>" );
            out.println( "<P>This is a test to connect to a database, execute a simple SELECT and display the results below." );
            out.println( "<br>\n<br>" );
            Integer intObject;
            while ( resultSet.next() )
               intObject = new Integer( resultSet.getInt( 1 ) );
               Array.add( intObject );
            resultSet.close();
            for( int i = 0; i < Array.size(); i++)
             out.println(Array.get(i));
            out.close();
        }//end try
        catch ( SQLException sqlEx )
            sqlEx.printStackTrace();
            out.println( "<TITLE>ERROR</TITLE>" );
            out.println( "<HEAD>" );
            out.println( "<BODY><P>An error occurred.<br>Contact Mitch!" );
            out.println( "</P></BODY></HTML>" );
            out.close();
        catch( Exception exception )
           exception.printStackTrace();
           throw new UnavailableException( exception.getMessage() );
    //else
    //    out.println( "<h1>This indicates an old session</h1>" );
    }//doPost end
    public void destroy()
        try
            statement.close();
            connection.close();
        catch( SQLException sqlEx )
            sqlEx.printStackTrace();
    }//end destroy
}//end Class

WLS 7.0 sp2 - Servlet Problems with SOAP messages

          I'm using Weblogic 7.0 SP2 and trying to create a Servlet to receive SOAP wrapped
          XML messages. I'm getting the following error. Is this a problem with WLS7.0sp2's
          support of JAXM? The System.out.println's indicate I have successfully received
          the incoming SOAP request and then successfully formatted the SOAP response, but
          upon returning saving the response it appears to blow up. Does anyone have any
          suggestions?
          I need to do the following in a servlet:
          - receive an incoming SOAP request with an embedded XML message
          - perform some processing
          - return a SOAP response with an embedded XML message
          Should I be using JAXM? Or can I do this same task easily with JAX-RPC?
          <Feb 24, 2004 4:10:42 PM AST> <Error> <HTTP> <101017> <[ServletContext(id=260434
          7,name=isd.war,context-path=)] Root cause of ServletException
          java.lang.Error: NYI
          at weblogic.webservice.core.soap.SOAPMessageImpl.saveRequired(SOAPMessag
          eImpl.java:360)
          at javax.xml.messaging.JAXMServlet.doPost(Unknown Source)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
          at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
          (ServletStubImpl.java:1058)
          at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
          pl.java:401)
          at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
          pl.java:306)
          at weblogic.servlet.internal.WebAppServletContext$ServletInvocationActio
          n.run(WebAppServletContext.java:5445)
          at weblogic.security.service.SecurityServiceManager.runAs(SecurityServic
          eManager.java:780)
          at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppSe
          rvletContext.java:3105)
          at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestIm
          pl.java:2588)
          at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:213)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:189)
          >
          I've stripped the code down so that all it does is verifies the incoming SOAP/XML
          request and creates a hard-coded response... be gentle... I'm a novice at this
          import javax.xml.soap.*;
          import javax.servlet.*;
          import javax.servlet.http.*;
          // import javax.xml.transform.*;
          import java.util.*;
          import java.io.*;
          public class RegisterServlet extends HttpServlet
          static MessageFactory fac = null;
          static
          try
          fac = MessageFactory.newInstance();
          catch (Exception ex)
          ex.printStackTrace();
          public void init(ServletConfig servletConfig) throws ServletException
          super.init(servletConfig);
          public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException,
          IOException
          try
          System.out.println("** Note: doPost() Entering req = " + req);
          // Get all the headers from the HTTP request
          MimeHeaders headers = getHeaders(req);
          // Get the body of the HTTP request
          InputStream is = req.getInputStream();
          // Now internalize the contents of a HTTP request
          // and create a SOAPMessage
          SOAPMessage msg = fac.createMessage(headers, is);
          System.out.println("** Note: doPost() Step A");
          SOAPMessage reply = null;
          reply = onMessage(msg);
          System.out.println("** Note: doPost() Step B reply = " + reply);
          if (reply != null)
          * Need to call saveChanges because we're
          * going to use the MimeHeaders to set HTTP
          * response information. These MimeHeaders
          * are generated as part of the save.
          if (reply.saveRequired())
          System.out.println("** Note: doPost() Step C reply.saveRequired()");
          reply.saveChanges();
          resp.setStatus(HttpServletResponse.SC_OK);
          putHeaders(reply.getMimeHeaders(), resp);
          // Write out the message on the response stream
          OutputStream os = resp.getOutputStream();
          System.out.println("** Note: doPost() Step D os = " + os);
          reply.writeTo(os);
          os.flush();
          else
          resp.setStatus(HttpServletResponse.SC_NO_CONTENT);
          catch (Exception ex)
          throw new ServletException("** Error: SAAJ POST failed: " + ex.getMessage());
          static MimeHeaders getHeaders(HttpServletRequest req)
          Enumeration enum = req.getHeaderNames();
          MimeHeaders headers = new MimeHeaders();
          while (enum.hasMoreElements())
          String headerName = (String)enum.nextElement();
          String headerValue = req.getHeader(headerName);
          StringTokenizer values =
          new StringTokenizer(headerValue, ",");
          while (values.hasMoreTokens())
          headers.addHeader(headerName,
          values.nextToken().trim());
          return headers;
          static void putHeaders(MimeHeaders headers, HttpServletResponse res)
          Iterator it = headers.getAllHeaders();
          while (it.hasNext())
          MimeHeader header = (MimeHeader)it.next();
          String[] values = headers.getHeader(header.getName());
          if (values.length == 1)
          res.setHeader(header.getName(),
          header.getValue());
          else
          StringBuffer concat = new StringBuffer();
          int i = 0;
          while (i < values.length)
          if (i != 0)
          concat.append(',');
          concat.append(values[i++]);
          res.setHeader(header.getName(), concat.toString());
          // This is the application code for handling the message.
          public SOAPMessage onMessage(SOAPMessage message)
          SOAPMessage replymsg = null;
          try
          System.out.println("** Note: OnMessage() Entering msg = " + message);
          //Extract the ComputerPart element from request message and add to reply SOAP
          message.
          SOAPEnvelope reqse = message.getSOAPPart().getEnvelope();
          SOAPBody reqsb = reqse.getBody();
          //System.out.println("** Note: OnMessage() Step B");
          System.out.println("** Note: OnMessage () Step A Soap Request Message Body = "
          + reqsb);
          //Create a reply mesage from the msgFactory of JAXMServlet
          System.out.println("** Note: OnMessage () Step B");
          replymsg = fac.createMessage();
          SOAPPart sp = replymsg.getSOAPPart();
          SOAPEnvelope se = sp.getEnvelope();
          SOAPBody sb = se.getBody();
          System.out.println("** Note: OnMessage () Step C Soap Reply Before Message Body
          = " + sb);
          se.getBody().addBodyElement(se.createName("RegisterResponse")).addChildElement(se.createName("ErrorCode")).addTextNode("000");
          System.out.println("** Note: OnMessage () Step D Soap Reply After Message Body
          = " + sb);
          replymsg.saveChanges();
          System.out.println("** Note: OnMessage() Exiting replymsg = " + (replymsg));
          catch (Exception ex)
          ex.printStackTrace();
          return replymsg;


Michael,
I got the same error on WLS8.1/Win2K professional and apache FOP (old version).
After digging into the WLS code and FOP(old version). i found the conflict happens
on
the "org.xml.sax.parser" system property. In WLS code, they hard coded like the
following when startup weblogic server:
System.setProperty("org.xml.sax.parser", "weblogic.xml.jaxp.RegistryParser");
But the FOP code try to use the "org.xml.sax.parser" system property to find the
sax parser then conlict happens.
Here is the response from BEA support :
"I consulted with our developers regarding the question of whether we can change
the hard-coded value for the java system property: org.xml.sax.parser by using
a configuration parameter and I found that unfortunately there is no specific
setting to change the value. As you had mentioned in your note the org.xml.sax.parser
system property can be changed programmatically in your application code."
I solve my problem by using newer apache FOP (it never use the system property:org.xml.sax.parser
any more) and XML Registy for WLS8.1.
Good luck.
David Liu
Point2 Technologies Inc.
"p_michael" <[email protected]> wrote:
>
Help.
When we migrated from WLS 6.1 to WLS 7.0 SP2 when encountered a problem
with XML
parsing that did not previously exist.
We get the error "weblogic.xml.jaxp.RegistryParser is not a SAX driver".
What does this mean? And, what should we do about it.
p_michael

Servlet Problem with Back Button on IE

Hello All:
This is a weird problem I am facing on IE.
I have a servlet which is invoked by the doGet() method. This servlet
has a FORM which has few fields. One of the field has a hyperlink which
makes a window.open() call for Onclick. This pop-up allows a user to
search for some value. The result of the search is displayed in a
SELECT box. Based on the value selected in this SELECT box, the field
in the servlet that called this pop-up gets populated. After this is
done, I close this pop-up & click on the proceed button of the FORM
(using POST) which takes us to another servlet. Then when I click on
the back button, the fields on the form which were populated are gone.
I have made the following analysis:
(i) On clicking the back button, a request is sent to the server.
(ii) It works on FireFox & not on IE
(iii) If I do not use the hyperlink to bring the pop-up, and then I
click on proceed and then back, the fields do not vanish.
(iv) I tried using http://www.google.com to the call on window.open().
Does not help
(v) The very action of using pop-up by clicking on it causes this
problem
(vi) I tried replacing the hyperlink with a button. It did not work.
Any help or tips in this regard would be helpful.
Thanks in advance.
Mahesh

I dont know how you can post on the back button, and am a bit confused as to why you need to go back, you would normally want to go forwards :).
What I would do is have the same servlet handle both cases.
I would make 1 servlet SUBMIT TO ITSELF.
You may have to pass an additional parameter to indicate whether this is the initial / first request, or a subsequent request where the servlet has re-submitted back to itself.
If you want to disable the back button you can use javaScript
<script language="JavaScript" type="text/JavaScript">

</script>
I used this when I found that users could use the back button and re-submit when I didnt want them to, kind of the opposite of your problem!

RFC call in Servlet problem

Hello,
I have servlet in my web application module, and I try to make RFC call, within it. I use com.sap.mw.jco.*.
I compile it but when run the server respond with
Application error occurs during processing the request.
Details: java.lang.NoClassDefFoundError: com/sap/mw/jco/JCO The ID of this error is
Exception id: [000C763FB7EE00390000001F000007E800043A148A45F9B4
I think that I should packaged the jco lib in my war and make it available to servlet, but how can I do this ?
Thank for any help.

Hello,
Thanks a lot Maksim, Bhavik, you helped me.
I try to make a reference and now the library ClassNotFound error is gone.
But now I have a next problem with RFC call, I also wrote it to post (Webdynpro VS. Java Servlet). I have a code in which I make RFC call. When I embed this code into regular Java aplication and run, it will return results as I expect. (of course I must run it with jco lib .jar in classpath). But when I run it on my servlet, I got an exception with message: "'mshost' missing"
I don't know what this supposed to mean, because I run the mentioned application, also from PC where I have j2ee engine installed and it work.
If you can please help.
(and thank for your help again (Maksim, Bhavik))

Download a .doc file from a servlet, problems with filters

          Hi! I put this post in an incorrect forum so I think this is the correct one. Hope
          anyone can help.
          We need some help in order to view a .doc file that we've stored into a blob column
          of some oracle table. The file is compressed using Zip classes and now what we
          want to do is:
          We have a web page with a link to a servlet that will read the blob, unzip the
          file and show it into a new web page with ms word.
          The problem appeared when we put some compression filters in our WL 6.1 SP3 and
          the result is always the same. When we tell IExplorer to save the file it works
          correctly but when we tell him to open the document it shows the "Open with..."
          window as if the content-type or any other header was incorrect.
          Here is part of the code:
          ....... if(mydoc!=null && mydoc.length>0){ res.setHeader("Content-Type", "application/msword");
          res.setHeader("Cache-Control","no-cache"); res.setHeader("Content-Disposition",
          "attachment;filename=\"mydoc.doc\"" ); if(isZIPPED == 1){ ByteArrayInputStream
          array = new ByteArrayInputStream(informe); ZipInputStream zip = new ZipInputStream(new
          BufferedInputStream(array)); ZipEntry entry; while((entry = zip.getNextEntry())
          != null){ int n; byte mydata[] = new byte[16384]; ServletOutputStream out = res.getOutputStream();
          while((n = zip.read(mydata, 0, 16384)) != -1){ out.write(mydata, 0, n); } } }
          ... So, what are we doing wrong?
          Any help will be much appreciated!! Thanks.


problem dissapeared, no need anymore to solve this one.

Check Authorization servlet problem

Hi,
This is what I'm getting in my IAS application log after trying to reach a
servlet.
I already checked the security parameters in the deploytooll to make sure
that I'm not using any restrictions.
Can someone help me solving this problem ?
Thank you
Ido
07/Aug/2001 15:24:49:9] error: APPLOGIC-caught_exception: Caught Exception:
[07/Aug/2001 15:24:55:8] error: Exception: SERVLET-execution_failed: Error
in executing servlet CellmazeEntranceServlet: java.lang.NullPointerException
Exception Stack Trace:
java.lang.NullPointerException
at
com.netscape.server.servlet.servletrunner.ServletInfo.checkAuthorization(Unk
nown Source)
at com.netscape.server.servlet.servletrunner.ServletRunner.execute(Unknown
Source)
at com.kivasoft.applogic.AppLogic.execute(Compiled Code)
at com.kivasoft.applogic.AppLogic.execute(Compiled Code)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at com.kivasoft.thread.ThreadBasic.run(Native Method)
at com.kivasoft.thread.ThreadBasic.run(Compiled Code)
at java.lang.Thread.run(Compiled Code)

Hi,
please have a look at the configuration of J2EE authentication and authorization on OC4J, following the OC4J security documentation available in the OracleAs documentation. You don't provide much details on what you did to make it work so its hard to give you any helping hand
Frank

Servlets Problem

hi all,
i have a problem about which i search lot but didnt find any answer.
i made an servlet and deploy it in tomcat.
My directory structure is according to standard under midp folder. In my web.xml under WEB-INF/classes
i wrote
<web-app>
<servlet>
<servlet-name>bob</servlet-name>
<servlet-class>HitServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>bob</servlet-name>
<url-pattern>/hits</url-pattern>
</servlet-mapping>
</web-app>
and acces it with http://localhost:8080/midp/hits
it says hits not avaiable
but when i change this section
<servlet-mapping>
<servlet-name>bob</servlet-name>
<url-pattern>/servlet/HitServlet</url-pattern>
</servlet-mapping>
and access http://localhost:8080/midp/servlet/HitServlet
it works.
i cant understand y this happen bcz i wanna access it like
http://localhost:8080/midp/hits
what should i have to do?
plz help me.

hi all,
sorry if i repeating my question may someone not answering due to that this question is related to any product.
But i try lot on google for this question but didnt get any help, thats y i put it here bcz this forum is very active and i always get good answer from here.

Servlet problem - rwexec?

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