Does any one know what is wrong with this servlet code
package com.bt.ros;
import java.util.*;
import java.io.*;
import java.net.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
import javax.sql.*;
import javax.naming.InitialContext;
import javax.naming.Context;
import javax.naming.NamingException;
* This class is a servlet that searches for a Finder Aid.
* @author
public class FinderAidsSearchS extends HttpServlet {
* This is the static initializer,
* executed the first time this class is referred to.
* It makes sure the JDBC pool driver is loaded.
* This method examines an HTTP request and searches for the
* specified Finder Aid record in the database. It then redirects
* the response to the <tt>Results.jsp</tt> JSP page.
public void service(HttpServletRequest req, HttpServletResponse res)
throws IOException
HttpSession session = req.getSession(true);
//res.setContentType("text/html");
//PrintWriter out = res.getWriter( );
//out.println("<HTML>");
//out.println("<HEAD>");
//out.println("<TITLE>");
//out.println("A Servlet Example");
String year = req.getParameter("Year");
String year_range = req.getParameter("Year_Range");
String county = req.getParameter("County");
Connection conn = null;
try {
//example code from tomcatmanual
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/rosDS");
//Connection
conn = ds.getConnection();
Statement stmt = conn.createStatement();
String select = "select * from abridgment where " +
"(a_county = '" + county +
"' AND a_year_date = " + year +
out.println("<DEBUG> <select> the select staement is : " + select);
stmt.execute(select);
ResultSet resultSet = stmt.getResultSet();
Results abridgeresults = new Results();
abridgeresults.setName("NaeemColl");
Abridgment varabridgment = null;
int nRows = 0;
while(resultSet.next()){
nRows++;
varabridgment = new Abridgment();
varabridgment.seta_county(county);
varabridgment.seta_year_date(Integer.parseInt(year));
varabridgment.seta_sub_year_volume(resultSet.getInt("a_sub_year_volume"));
// out.println("varabridgment - attributes are:");
//out.println("varabridgment - attributes are:" +varabridgment.geta_sub_year_volume());
//out.println("varabridgment - attributes are:"+resultSet.getInt("a_sub_year_volume"));
varabridgment.seta_page_id(resultSet.getString("a_page_id"));
varabridgment.seta_month_date(resultSet.getInt("a_month_date"));
varabridgment.seta_day_date(resultSet.getInt("a_day_date"));
varabridgment.seta_year_sequence(resultSet.getLong("a_year_sequence"));
varabridgment.seta_day_sequence(resultSet.getLong("a_day_sequence"));
varabridgment.seta_year_volume(resultSet.getInt("a_year_volume"));
varabridgment.seta_volume_id(resultSet.getString("a_volume_id"));
varabridgment.seta_summary(resultSet.getString("a_summary"));
varabridgment.seta_batch_id(resultSet.getLong("a_batch_id"));
varabridgment.seta_image_id(resultSet.getLong("a_image_id"));
abridgeresults.addAbridgment(varabridgment);
//trying to use vector construct
req.setAttribute("results",abridgeresults);
//session.setAttribute("results", abridgeresults);
stmt.close();
conn.close();
//out.println("</BODY>");
//out.println("</HTML>");
// String sURL = res.encodeRedirectURL("/rossearch/results.jsp");
try{
//TEMPCOMM res.sendRedirect(sURL);
req.getRequestDispatcher("/rossearch/results.jsp").forward(req, res);
//TEMPCODE
//out.println("</BODY>");
//out.println("</HTML>");
catch(Exception e){
System.err.println("Exception: FinderAidsSearchS.service: " + e);
catch (Exception e) {
System.err.println("Exception: FinderAidsSearchS.service: " + e);
}i really need some assistance at the following areas of code :
where the database results are set to attributes of one bean varabridgment (Type Abridgement) - the declaration and use of this bean.
and where this bean is then added to another bean abridgeresults (Type Results) as a List collection.
i get a null pointer exception when i try to retrieve the List from abridgeresults object of Type Results Bean.
i would really appreciate some assistance in this - i really need to go to sleep now - but cant until i solve this issue. - thanks all in advance.
below is exception outputed to tomcat log file.
it is thrown at the following line of code in the jsp that tries to get the List object :
currently jsp code to retrieve List: <% List myAbridgments = (List) request.getAttribute("results");
for (int i = 0; i < myAbridgments.size(); i++) {
abridgment = (Abridgment) myAbridgments.get(i);
%>
line that gives problem is
(results_jsp.java:95)
//myAbridgments - is variable where i store the List object in jsp scriptlet
for (int i = 0; i < myAbridgments.size(); i++) {
Also, i dont understand why the servlet keeps on forwarding to the results.jsp when i even comment out the line of code to forward request oobject to results.jsp - i recompile copy it over original and restart tomcat - but still i get the null pointer exception in results_jsp - but i'm no longer forwarding anything to this jsp. --- i want to do some out.printline statemets in servelt to see some of the data from the query - but i cant as it just forwrads the request to results.jsp - how can i output the data to look at debug - i dont have a log4j logger setup and dont have IDE to be able to place break points - so wanted to just output stuff to browser to have a look at what was going on - but can't as just forwards request on ?
Exception ....
2005-11-07 02:45:20 StandardWrapperValve[jsp]: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:536)
----- Root Cause -----
java.lang.NullPointerException
at org.apache.jsp.results_jsp._jspService(results_jsp.java:95)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:210)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:594)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:565)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:619)
at java.lang.Thread.run(Thread.java:536)
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<p>
Hi,
</p>
<p>
I need to redirect user from jsf application to PHP app with some request attributes using POST method. To check how to do at first I prepared simple servlet:
</p>
<p>
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</p>
<p>
IOException {
req.setAttribute("p1","Value One");
req.setAttribute("p2","Value Two");
res.sendRedirect("http://www.mycompany.pl/test.php");
public void doGet(HttpServletRequest request, HttpServletResponse response)throws IOException,
</p>
<p>
ServletException{
doPost(request,response);
</p>
<p>
I also prepared simple PHP page to display these attributes (Im sure this page works correct):
</p>
<p>
<html>
<body>
Attribute p1: <? echo $_POST["p1"]; ?> <br />
Attribute p2: <? echo $_POST["p2"]; ?> <br />
</body>
</html>
</p>
<p>
Te problem is that attributes from servet don't displayed on PHP page - why. What is wrong wit this servlet ?
</p>
<p>
Kuba
</p>Well if this line of code works for you:
res.sendRedirect("http://www.mycompany.pl/test.php");
you could append parameters by building the url string dynamically.
res.sendRedirect("http://www.mycompany.pl/test.php?p1=ValueOne&p2=ValueTwo");
Isn't PHP a server technology, if yes why don't you do all the work in php (you'll avoid cookie problems)?
Regards
Fred
PS I don't think this forum is the right place for php questions. -
My mac book is flashing a grey file with a question mark does any one know what this could be?
my mac book is flashing a grey file with aQuestion mark in it what does that mean does anyone know?
That folder with the question mark icon means that the MacBook can't find the boot directory. That can either mean it can't find the hard drive or the hard drive data is somehow corrupted.
Put your install DVD into the drive and reboot. As soon as you hear the boot chime, hold down the "c" key on your keyboard (or the Option key until the Install Disk shows up). That will force your MacBook to boot from the optical drive.
Once it has finished booting and you are at the Install screen launch Disk Utility from the Utilities menu. Is your Hard Drive in the list on the left?
If it is then select the First Aid Tab run Repair Disk and if that repairs any problems run it again until the green OK appears and then run Repair Permissions.
If your hard drive isn’t recognized in Disk Utility then your hard drive is probably dead. -
When I try to play a dvd on my Macbook Pro I get a box with the message " This is only for activated users. To activate go to preferences,donate" this takes me to Mr. Gecko's facebook page asking me to donate $1.99-$4.99.
Any clues on what this is, and/or how to bypass it? If I can report this to someone? ThanksSure sounds like malware, unles you installed something from a questionable site, then it's still malware but in a payware form as playing DVDs is free on Mac's.
Unless the DVD has software on it perhaps?
Does this work on any movie DVD or is this a special kind of DVD with software on it from someplace?
Maybe you are looking for
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dynamic parameters
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