Hi guys..
I am deploying my first
struts application.
I got held up at an exception.
I am including the details here:
my root directory is C:\jakarta-tomcat-4.1.30
I created a directory by name "struts" in webapps.
(C:\jakarta-tomcat-4.1.30\webapps\struts)
I created the directory "web-inf" and index.jsp is my first view.
C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF.
C:\jakarta-tomcat-4.1.30\webapps\struts\index.jsp
I copied all the jar files from C:\jakarta-struts-1.2.4\lib to
C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF\lib\
__________________________________________________________________________
index.jsp:
<%@ page language="java" %>
<%@ taglib
uri="/WEB-INF/struts-html.tld"
prefix="html" %>
<html>
<head>
<title> First Struts Application</title>
</head>
<body>
<table width="500" border="0" cellspacing="0"
cellpadding="0">
<tr>
<td> </td>
</tr>
<tr>
<td height="68" width="48%">
<div align="left">
<img src="images/Cloud.gif">
</div>
</td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td> </td>
</tr>
</table>
<html:form action="Lookup" name="lookupForm"
type="first.LookupForm">
<table width="45%" border="0">
<tr>
<td>Symbol:</td>
<td><html:text property="symbol" /></td>
</tr>
<tr>
<td colspan="2" align="center">
<html:submit />
</td>
</tr>
</table>
</html:form>
</body>
</html>
_______________________________________________________________________
I included the following in web.xml:
C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF\web.xml
<!-- Struts Tag Library Descriptors -->
<taglib>
<taglib-uri>
/WEB-INF/struts-html.tld
</taglib-uri>
<taglib-location>
/WEB-INF/struts-html.tld
</taglib-location>
</taglib>
I copied struts-html.tld from C:\jakarta-struts-1.2.4\lib to
C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF\
ActionForm and Action :
C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF\classes\first
LookupAction.java
(Package first contains 2 classes :LookupAction and LookupForm)
__________________________________________________________________________
package first;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
public class LookupAction extends Action
{
protected Double getQuote(
String symbol)
{
if(symbol.equalsIgnoreCase("SUNW"))
{
return new Double(25.00);
}
return null;
}
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws IOException,ServletException
{
Double price=null;
String target=new String("success");
if(form!=null)
{
LookupForm lookupForm=(LookupForm)form;
String symbol=lookupForm.getSymbol();
price=getQuote(symbol);
}
if(price==null)
{
target=new String("failure");
}
else
{
request.setAttribute("PRICE",price);
}
return (mapping.findForward(target));
}
}
class LookupForm extends ActionForm
{
private String symbol=null;
public String getSymbol()
{
return (symbol);
}
public void setSymbol(String symbol)
{
this.symbol=symbol;
}
public void reset(ActionMapping mapping,HttpServletRequest request)
{
this.symbol=null;
}
}
___________________________________________________________________________
I compiled the above
java file. The corresponding class files are in
C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF\classes\first\
The struts-config.xml contains :
(C:\jakarta-tomcat-4.1.30\webapps\struts\WEB-INF\struts-config.xml)
__________________________________________________________________________
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE struts-config
PUBLIC "-//Apache Software Foundation//DTD Struts
Configuration 1.1//EN"
"http://jakarta.apache.org/struts/dtds/struts-
config_1_1.dtd">
<struts-config>
<form-beans>
<form-bean name="lookupForm"
type="first.LookupForm"/>
</form-beans>
<action-mappings>
<action path= "/Lookup"
type="first.LookupAction"
name="lookupForm" >
<forward name="success" path="/quote.jsp"/>
<forward name="failure" path="/index.jsp"/>
</action>
</action-mappings>
</struts-config>
______________________________________________________________________
The second view is quote.jsp
___________________________________________________________
<html>
<head>
<title>First Struts Application</title>
</head>
<body>
<table width="500"
border="0" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
</tr>
<tr>
<td height="68" width="48%">
<div align="left>
<img src="images/wxmainlogowhitespace.gif">
</div>
</td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td> </td>
</tr>
<tr>
<td>
Current Price: <%=request.getAttribute("PRICE") %>
</td>
</tr>
<tr>
<td> </td>
</tr>
</table>
</body>
</html>
____________________________________________________
Finally the web.xml file has :
________________________________________________________
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application
2.3//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_3.dtd">
<web-app>
<!-- Standard ActionServlet Configuration -->
<
servlet>
<servlet-name>action</servlet-name>
<servlet-class>
org.apache.struts.action.ActionServlet
</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Standard ActionServlet Mapping -->
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<!-- Standard Welcome File List -->
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- Struts Tag Library Descriptors -->
<taglib>
<taglib-uri>
/WEB-INF/struts-html.tld
</taglib-uri>
<taglib-location>
/WEB-INF/struts-html.tld
</taglib-location>
</taglib>
</web-app>
___________________________________________________________________________
Now when i try to open the index page, by
http://localhost:8080/struts/ i am getting the following error:
HTTP Status 500 -
--------------------------------------------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: /index.jsp(30,0) Attribute name invalid according to the specified TLD
at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:94)
at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:428)
at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:186)
at org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:498)
at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:707)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:1028)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:1070)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:1076)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:232)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:1028)
at org.apache.jasper.compiler.Validator.validate(Validator.java:607)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:230)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:369)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:473)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:190)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$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$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
at org.apache.catalina.core.StandardPipeline$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$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
--------------------------------------------------------------------------------
I guess i have done everything perfect.
Can anyone help me out from this exception?
Thanks in advance,
Rajani.
