Jonas,
Don't declare the variables in <%! %> tags. That's not what they're for.
just put them in <% %> tags.
Well, that might not solve your problem but it will prevent concurrency
problems later on.
Geert Van Damme
> -----Original Message-----
> From: A mailing list about Java Server Pages specification and reference
> [mailto:[EMAIL PROTECTED]]On Behalf Of Jonas Devries
> Sent: vrijdag 18 mei 2001 11:44
> To: [EMAIL PROTECTED]
> Subject:
>
>
> This is the whole jsp-file!!!
>
> Hope you can do something with it!!
>
> Thanx
> Jonas
>
> <html>
> <body>
>
> <%@ page import="databank" import="java.sql.*" %>
>
> <jsp:useBean id="db" class="databank" />
>
> <%! ResultSet res;
> ResultSetMetaData meta;
> int aantal;
> int kol;
> %>
>
> <% res = db.lijst("select * from klant"); %>
>
> <% if(!res.next()) {
> out.println("Deze instructie heeft geen resultaten");
> }
> else { %>
> <%= res.getString(0) %>
> <% } %>
>
>
> </body>
> </html>
>
>
> >From: "Sachin S. Khanna" <[EMAIL PROTECTED]>
> >Reply-To: A mailing list about Java Server Pages specification and
> > reference <[EMAIL PROTECTED]>
> >To: [EMAIL PROTECTED]
> >Date: Fri, 18 May 2001 14:37:47 +0530
> >
> >Couple of things :
> >a) Provide the complete source code for the jsp.
> >b) Apparently nothing seems to be wrong with your java bean code.
> >Have a nice day.
> >With regards,
> >Sachin S. Khanna
> >http://www.emailanorder.com
> >----- Original Message -----
> >From: Jonas Devries <[EMAIL PROTECTED]>
> >To: <[EMAIL PROTECTED]>
> >Sent: Friday, May 18, 2001 1:04 PM
> >
> >
> > > Does somebody knows why this code doesn't work? I want to
> acces a MS =
> > > Access DB and give a simple query. I give the ResultSet back
> to my JSP
> >=
> > > file but he gives some errors. JSP and Java-bean are
> included. Errors
> >=
> > > also. There is data in the db and the odbc-jdbc driver is installed.
> > >
> > > Thank you very much in advance
> > >
> > > Jonas
> > >
> > >
> > > import java.sql.*;
> > > import java.util.*;
> > >
> > > public class databank {
> > >
> > > private String driver =3D "sun.jdbc.odbc.Jdbc.OdbcDriver";
> > > private String url =3D "jdbc:odbc:db1";
> > > private Connection connection;
> > > private Statement statement;
> > > private ResultSet res;
> > > private ResultSetMetaData meta;
> > > private String naam;
> > > private int aantal;
> > >
> > > public databank(){}
> > > =20
> > > =20
> > > public ResultSet lijst(){
> > >
> > > try {
> > > String query =3D "select * from klant";
> > > Class.forName(driver);
> > > connection =3D DriverManager.getConnection(url); =20
> > > statement =3D connection.createStatement();
> > > res =3D statement.executeQuery(query); =20
> > > =20
> > > }
> > > catch (SQLException e){}
> > > catch (ClassNotFoundException cnfex){}=20
> > >
> > > return res;
> > >
> > > }
> > >
> > > }
> > >
> > >
> > >
> > >
> > > ResultSetMetaData meta =3D res.getMetaData(); int aantal =3D
> > > meta.getColumnCount(); %> while (res.next()){ for (kol =3D 1; kol <=3D
> > > aantal; kol++) %>
> > >
> > >
> > >
> > >
> > >
> > > Error: 500
> > > Location: /test9.jsp
> > > Internal Servlet Error:
> > >
> > > javax.servlet.ServletException
> > > at =
> > >
> >org.apache.jasper.runtime.PageContextImpl.handlePageException(Pag
> eContext=
> > > Impl.java:386)
> > > at =
> > >
> >_0002ftest_00039_0002ejsptest9_jsp_0._jspService(_0002ftest_00039
> _0002ejs=
> > > ptest9_jsp_0.java:126)
> > > at
> >org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:126)
> > > at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > > at =
> > >
> >org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(Js
> pServlet=
> > > .java:174)
> > > at =
> > >
> org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:261)
> > > at
> >org.apache.jasper.runtime.JspServlet.service(JspServlet.java:369)
> > > at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > > at =
> > >
> >org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrappe
> r.java:5=
> > > 03)
> > > at =
> > > org.apache.tomcat.core.ContextManager.service(ContextManager.java:559)
> > > at =
> > >
> >org.apache.tomcat.service.connector.Ajp12ConnectionHandler.proces
> sConnect=
> > > ion(Ajp12ConnectionHandler.java:156)
> > > at =
> > >
> >org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoi
> nt.java:=
> > > 338)
> > > at java.lang.Thread.run(Thread.java:484)
> > >
> > > Root cause:=20
> > > java.lang.NullPointerException
> > > at =
> > >
> >_0002ftest_00039_0002ejsptest9_jsp_0._jspService(_0002ftest_00039
> _0002ejs=
> > > ptest9_jsp_0.java:93)
> > > at
> >org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:126)
> > > at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > > at =
> > >
> >org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(Js
> pServlet=
> > > .java:174)
> > > at =
> > >
> org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:261)
> > > at
> >org.apache.jasper.runtime.JspServlet.service(JspServlet.java:369)
> > > at
> javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> > > at =
> > >
> >org.apache.tomcat.core.ServletWrapper.handleRequest(ServletWrappe
> r.java:5=
> > > 03)
> > > at =
> > > org.apache.tomcat.core.ContextManager.service(ContextManager.java:559)
> > > at =
> > >
> >org.apache.tomcat.service.connector.Ajp12ConnectionHandler.proces
> sConnect=
> > > ion(Ajp12ConnectionHandler.java:156)
> > > at =
> > >
> >org.apache.tomcat.service.TcpConnectionThread.run(SimpleTcpEndpoi
> nt.java:=
> > > 338)
> > > at java.lang.Thread.run(Thread.java:484)
> > >
> > >
> > >
> >_________________________________________________________________________
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> >http://www.hotmail.com.
> > >
> > >
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> > >
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> > >
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> >
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>
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>
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> Some relevant FAQs on JSP/Servlets can be found at:
>
> http://java.sun.com/products/jsp/faq.html
> http://www.esperanto.org.nz/jsp/jspfaq.html
> http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
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Some relevant FAQs on JSP/Servlets can be found at:
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http://www.jguru.com/jguru/faq/faqpage.jsp?name=JSP
http://www.jguru.com/jguru/faq/faqpage.jsp?name=Servlets
