[jboss-user] [JBoss Eclipse IDE (users)] - javax.servlet.ServletException: Cannot get value for express

Fri Aug 4 05:46:18 EDT 2006

I m having problem with running of my JSP page which is calling managed bean properties. I dont know wht thing is missing but I hope with review of u ppl I will got the solution..

convert.jsp:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  | <%@taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
  | <%@taglib uri="http://java.sun.com/jsf/core" prefix="f"%>
  | <html>
  | <head>
  | </head>
  | <body>
  | <f:view>
  | 	<html>
  | 	<head>
  | 	<title>Celsius converter</title>
  | 	</head>
  | 	<body>
  | 	<h1>Celcius Convertersss</h1>
  | 	<hr>
  | 	<h:form>
  | 	<h:inputText value="#{pageBean.celsius}" />
  |    <h:outputText value="Celsius" /><br/>
  |    <h:outputText value="#{pageBean.fahrenheit}" />
  |    <h:outputText value="Fahrenheit" /><br/>
  |    <h:commandButton value="Convert"  action="#{pageBean.convertToFahrenheit}" />
  | 	
  | 	</h:form>
  | 	</body>
  | 	</html>
  | </f:view>
  | 
  | </body>
  | </html>

faces-config.xml:

<?xml version="1.0"?>
  | <!DOCTYPE faces-config PUBLIC
  | "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
  | "http://java.sun.com/dtd/web-facesconfig_1_1.dtd">
  | 
  | <faces-config>
  |    <!--Now this config file is empty-->
  |     
  |    
  |    <managed-bean>
  | 		<managed-bean-name>pageBean</managed-bean-name>    
  | 		<managed-bean-class>jsfbean.PageBean</managed-bean-class>    
  | 		<managed-bean-scope>request</managed-bean-scope>    
  | 	</managed-bean>
  |    
  | </faces-config>
  | 

PageBean:

package jsfbean;
  | 
  | public class PageBean {
  | 	private Double celsius = null;
  | 	private Double fahrenheit = null;
  | 
  | 	public PageBean(){
  | 	}
  | 
  | 	public void setCelsius(Double celsius){
  | 		this.celsius = celsius;
  | 	}
  | 
  | 	public Double getCelsius(){
  | 		return celsius;
  | 	}
  | 
  | 	public void setFahrenheit(Double fahrenheit){
  | 		this.fahrenheit = fahrenheit;
  | 	}
  | 
  | 	public Double getFahrenheit(){
  | 		return fahrenheit;
  | 	}
  | 
  | 	public void convertToFahrenheit(){
  | 		setFahrenheit(new Double(getCelsius().doubleValue() * 1.8 + 32));
  | 	}
  | }
  | 

web.xml:

<?xml version="1.0" encoding="UTF-8"?>
  | <!DOCTYPE web-app PUBLIC
  | "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
  | "http://java.sun.com/dtd/web-app_2_3.dtd">
  | <web-app>
  | 	<display-name>The simplest JSF application.</display-name>
  | 	<servlet>
  | 		<servlet-name>Faces Servlet</servlet-name>
  | 		<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
  | 	</servlet>
  | 	<servlet-mapping>
  | 		<servlet-name>Faces Servlet</servlet-name>
  | 		<url-pattern>*.jsf</url-pattern>
  | 	</servlet-mapping>
  | 	<listener>
  | 	<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
  | 	</listener> 
  | </web-app>
  | 

Please share if u have solve this problem....

Thx

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