JSP + Javabeans
When i use a javabean in my jsp it doesnt find my class, I need to put anything in web.xml?? Im using Tomcat 4.0
I have beans.jsp:
<jsp:useBean id="languageBean" scope="page" class="LanguageBean">
<jsp:setProperty name="languageBean" property="*"/>
</jsp:useBean>
<html>
<head>
<title>useBean action test result</title>
And LanguageBeans.class in web-inf/classes/LanguageBean.class
what must I put in web.xml?
Thanks,
Daniel
Actually Tomcat can found the three files, but Im getting an error, and I think the code is good, because is an example from a book.
I have 3 files:
- beans.html -->Root
- beans.jsp -->Root
This the first part of the file:
<jsp:useBean id="languageBean" scope="page" class="LanguageBean">
<jsp:setProperty name="languageBean" property="*"/>
</jsp:useBean>
<html>
<head>
- LanguageBean.class -->WEB-INF/classes/
This is the error I'm getting:
Apache Tomcat/4.0.6 - HTTP Status 500 - Internal Server Error
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: Unable to compile class for JSPNote: sun.tools.javac.Main has been deprecated.
An error occurred at line: 1 in the jsp file: /beans.jsp
Generated servlet error:
C:\Program Files\Apache Tomcat 4.0\work\Standalone\localhost\_\beans$jsp.java:56: Class org.apache.jsp.LanguageBean not found.
LanguageBean languageBean = null;
^
An error occurred at line: 1 in the jsp file: /beans.jsp
Generated servlet error:
C:\Program Files\Apache Tomcat 4.0\work\Standalone\localhost\_\beans$jsp.java:59: Class org.apache.jsp.LanguageBean not found.
languageBean= (LanguageBean)
^
An error occurred at line: 1 in the jsp file: /beans.jsp
Generated servlet error:
C:\Program Files\Apache Tomcat 4.0\work\Standalone\localhost\_\beans$jsp.java:64: Class org.apache.jsp.LanguageBean not found.
languageBean = (LanguageBean) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "LanguageBean");
^
An error occurred at line: 12 in the jsp file: /beans.jsp
Generated servlet error:
C:\Program Files\Apache Tomcat 4.0\work\Standalone\localhost\_\beans$jsp.java:94: Class org.apache.jsp.LanguageBean not found.
out.print(JspRuntimeLibrary.toString((((LanguageBean)pageContext.findAttribute("languageBean")).getName())));
^
An error occurred at line: 15 in the jsp file: /beans.jsp
Generated servlet error:
C:\Program Files\Apache Tomcat 4.0\work\Standalone\localhost\_\beans$jsp.java:101: Class org.apache.jsp.LanguageBean not found.
out.print(JspRuntimeLibrary.toString((((LanguageBean)pageContext.findAttribute("languageBean")).getLanguage())));
^
An error occurred at line: 18 in the jsp file: /beans.jsp
Generated servlet error:
C:\Program Files\Apache Tomcat 4.0\work\Standalone\localhost\_\beans$jsp.java:108: Class org.apache.jsp.LanguageBean not found.
out.print(JspRuntimeLibrary.toString((((LanguageBean)pageContext.findAttribute("languageBean")).getLanguageComments())));
^
6 errors, 1 warning
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:285)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:548)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:176)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:188)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:381)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:473)
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:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:190)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve.java:246)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2347)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:468)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1027)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1125)
at java.lang.Thread.run(Thread.java:536)
Thanks
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"George M. Pieri" <[email protected]> wrote in message
news:[email protected]..
>
>
> I have a webapp that has a jsp page that calls a javabean.
>
> ....But the jsp fails because it cannot find the javabean class !?!?!?!
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====
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===================
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<td width="40%" bgcolor="black" align="center">
<input type="radio" name="cgames" value="Oblivion" checked><font color="red" size="2"> Oblivion </font>
<input type="radio" name="cgames" value="starwars"><font color="red" size="2"> Star Wars: Empire at War </font>
<input type="radio" name="cgames" value="finalfantasy"><font color="red" size="2"> Final Fantasy XI: Online </font>
<input type="submit" value="votebutton" name="Vote">
</td>
<td bgcolor="black" width="30%"></td>
</tr>
<tr><td bgcolor="black" colspan="3" align="center"><font color="red" size="3">
</font><font color="white" size="3">Total Votes</font></td></tr>
<tr><td height="15" bgcolor="red" colspan="3"></td></tr>
<tr><td align="left" bgcolor="black"><font color="white" size="3">0</font></td>
<td align="left" bgcolor="black"><font color="white" size="3">Oblivion</font></td>
<td align="center" bgcolor="black"><font color="white" size="3">0.00%</font></td>
</tr>
<tr><td align="left" bgcolor="black"><font color="white" size="3">0</font></td>
<td align="left" bgcolor="black"><font color="white" size="3">Star Wars: Empire at War</font></td>
<td align="center" bgcolor="black"><font color="white" size="3">0.00%</font></td>
</tr>
<tr><td align="left" bgcolor="black"><font color="white" size="3">0</font></td>
<td align="left" bgcolor="black"><font color="white" size="3">Final Fantasy XI: Online</font></td>
<td align="center" bgcolor="black"><font color="white" size="3">0.00%</font></td>
</tr>
<tr><td height="15" bgcolor="red" colspan="3"></td></tr>
</table>
</body>
</html>
I have little experience with beans and very little java experience so I'm at a loss for understanding how to make this work. Any examples of code would be very helpful. Thanks.Come now, you really don't expect us to believe that you've been working at this for a year with no headway? :)
Anyway, have you been through the trails that I linked to in your other thread? For JSPs and Servlets? Have a read at the JavaBeans trail [1] while you're at it.
And if you've got a specific question about some part where you're getting stuck, please post that. Because as of now, it looks like you need help with the whole thing. Please understand that while no one refuses to help you, people will usually not hand out ready made code for you to use. You need to show that you understand what you're doing and have put in effort with your work and are genuinely stuck despite trying.
Which part are you unable to do? Reading the selected choice? Adding the data to a bean? Displaying the second page?
[1] http://java.sun.com/docs/books/tutorial/javabeans/
People on the forum help others voluntarily, it's not their job.
Help them help you.
Learn how to ask questions first: http://www.catb.org/~esr/faqs/smart-questions.html
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I have some JSP pages where I try to dynamically present some drop-down
menus for the users to select values. I use a simple bean to manage it.
The problem is that those values are in non-iso8859-1 charset and I only
get ?????? rendered in the select box. I define an array (inline in the
JSP page as code scriptlet), write all possible (String) options for the
drop-down menu there and in the bean I do some calculations and render
the drop-down menu.
String label[]={"something in iso-8859-7 encoding in here","something in
iso-8859-7 encoding in here","something in iso-8859-7 encoding in here"};
and in the bean I have a for-loop to access this.
The page directive is set to iso-8859-7.
I think there is some kind of transparent translation, that has to do
with Java language, and after the rendering I only get ???? instead of
the correct iso-8859-7 value in the browser.
Any help appreciated.
(Tomcat, Apache web server, JDK 1.3,)
PS: This JSP page is used to submit some data in an Oracle database
(according to the selection of the user in the drop-down box), so I also
use JDBC 1.3, but I don't think that's relevant at all with my problem...
nullI have some JSP pages where I try to dynamically present some drop-down
menus for the users to select values. I use a simple bean to manage it.
The problem is that those values are in non-iso8859-1 charset and I only
get ?????? rendered in the select box. I define an array (inline in the
JSP page as code scriptlet), write all possible (String) options for the
drop-down menu there and in the bean I do some calculations and render
the drop-down menu.
String label[]={"something in iso-8859-7 encoding in here","something in
iso-8859-7 encoding in here","something in iso-8859-7 encoding in here"};
and in the bean I have a for-loop to access this.
The page directive is set to iso-8859-7.
I think there is some kind of transparent translation, that has to do
with Java language, and after the rendering I only get ???? instead of
the correct iso-8859-7 value in the browser.
Any help appreciated.
(Tomcat, Apache web server, JDK 1.3,)
PS: This JSP page is used to submit some data in an Oracle database
(according to the selection of the user in the drop-down box), so I also
use JDBC 1.3, but I don't think that's relevant at all with my problem...
null
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