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Field display problem

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posted 13 years ago

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Hi,

I am trying a simple application. Here is my JSF page

When I render this page I am getting this value #{LoginForm.userName} in the text field. Please find the attachment for the screen shot.

Thanks for your help in advance.

Davie Lin

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posted 13 years ago

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Take out the value attribute

jaisai vijay

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Hi Davie,

In that case how can I bind the value to bean property?

Thanks,

Davie Lin

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to bind that value to the backing bean
you use binding, not value.

Plus, you don't have to use binding attribute to get the value, you can use FaceContext.

jaisai vijay

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Hi Davie,

I was following Rich Faces example in roseindia. I think we can do this way but I tried as you said I got the following exception

javax.servlet.ServletException: javax.servlet.jsp.JspException: org.apache.jasper.el.JspELException: /user/login.jsp(21,6) '#{LoginForm.userName}' Cannot convert #{LoginForm.userName} of type class java.lang.String to class javax.faces.component.UIComponent
	org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:858)
	org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
	org.apache.jsp.user.login_jsp._jspService(login_jsp.java:118)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:415)
	com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:458)
	com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:126)
	org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
	org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
	com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:110)
	com.sun.faces.lifecycle.Phase.doPhase(Phase.java:100)
	com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139)
	javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
	org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:307)
	org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
	org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
	org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:706)
	org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:677)
	org.apache.jsp.index_jsp._jspService(index_jsp.java:59)
	org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

Thanks in advance.

Davie Lin

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have you remove the value attribute? do you understand why the exception?

jaisai vijay

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Yes I have removed the value attribute. I guess in the bean we have to declalre the property as HtmlInputText when you use binding attribute. I am not sure I was looking at online example.

Sorry I am quite new to JSF I just started couple of days back.

jaisai vijay

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Hi,

I don't know what is wrong with tomcat it works in Jboss. When I deploy the same application in jboss I get the empty text fields as I expected.

Please help to get this done in tomcat.

Davie Lin

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post your relevent code

jaisai vijay

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Hi,

I have attached my full code.

my login.jsp

<%@ taglib uri="http://richfaces.org/a4j" prefix="a4j"%>
<%@ taglib uri="http://richfaces.org/rich" prefix="rich"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h"%>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f"%>

<html>
	<head>
		<title>Login Page</title> 
		<link href="../css/style.css" rel="stylesheet" type="text/css"/>
		<a4j:loadScript src="jquery.js"/>
		<script type="text/javascript">
  jQuery(document).ready(function() {
    jQuery("a").click(function() {
      alert("Hello world!");
     });
  });
</script>
	</head>
	<body>
		<f:view>
		<a href="">Link</a>
		<center>
		<h:panelGrid width="380px" columns="2" border="0">
			<rich:panel header="Login" style="background-color: #ebf3fd;">
				<h:form id="LoginForm">
					<h:outputText value="#{LoginForm.text}" />
					<h:panelGrid id="lpg" columns="2" >
						<h:panelGroup>
						<h:outputText value="User Id"/> 
						<h:inputText id="username" value="#{LoginForm.userName}" styleClass="inputbox"/>
						<h:outputText value=""/>
						<h:message for="username" styleClass="errors"/>	
						</h:panelGroup>

<h:outputText value="Password"/> 
						<h:inputSecret id="password" value="#{LoginForm.password}" styleClass="inputbox"/>
						<h:outputText value=""/>
						<h:message for="password" styleClass="errors"/>

<h:outputText value=""/>
						<h:commandButton value="Login" action="#{LoginForm.validUser}" styleClass="submitButton"/>
					</h:panelGrid>
				</h:form>

<h:form>
					<h:panelGrid id="bottompg" columns="1" >
						<h:outputText value="New User?" style="font-family:arial, verdana;font-size:10px;"/>
						<h:commandLink value="Register Here" action="useraccount" style="font-family:arial, verdana;font-size:12px;"/>
						<h:outputText value=""/>
						<h:commandLink value="Forgot Password?" action="forgotpassword" style="font-family:arial, verdana;font-size:12px;"/>
					</h:panelGrid>
				</h:form>

</rich:panel>
		</h:panelGrid>
		</center>
	</f:view>	
	</body>
</html>

faces-config:

<?xml version="1.0" encoding="UTF-8"?>
<!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>

<managed-bean>
		<managed-bean-name>LoginForm</managed-bean-name>
		<managed-bean-class>com.form.LoginForm</managed-bean-class>
		<managed-bean-scope>request</managed-bean-scope>
	</managed-bean>

<managed-bean>
		<managed-bean-name>RetrievePassword</managed-bean-name>
		<managed-bean-class>com.form.RetrievePassword</managed-bean-class>
		<managed-bean-scope>request</managed-bean-scope>
	</managed-bean>

<managed-bean>
		<managed-bean-name>userForm</managed-bean-name>
		<managed-bean-class>com.form.UserForm</managed-bean-class>
		<managed-bean-scope>request</managed-bean-scope>
	</managed-bean>

<navigation-rule>
		<from-view-id>/user/login.jsp</from-view-id>
		<navigation-case>
			<from-action>#{LoginForm.validUser}</from-action>
			<from-outcome>success</from-outcome>
			<to-view-id>/user/success.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-action>#{LoginPage.validUser}</from-action>
			<from-outcome>failure</from-outcome>
			<to-view-id>/user/login.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-outcome>forgotpassword</from-outcome>
			<to-view-id>/user/forgotpassword.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-outcome>useraccount</from-outcome>
			<to-view-id>/user/useraccount.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>

<navigation-rule>
		<from-view-id>/user/forgotpassword.jsp</from-view-id>
		<navigation-case>
			<from-action>#{RetrievePassword.check}</from-action>
			<from-outcome>passwordsendingsuccess</from-outcome>
			<to-view-id>/user/successpwdsend.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-action>#{RetrievePassword.check}</from-action>
			<from-outcome>passwordsendingfail</from-outcome>
			<to-view-id>/user/forgotpassword.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>

<navigation-rule>
		<from-view-id>/user/success.jsp</from-view-id>

<navigation-case>
			<from-action>#{LoginForm.logout}</from-action>
			<from-outcome>logoutsuccess</from-outcome>
			<to-view-id>/user/logout.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-action>#{userForm.editProfile}</from-action>
			<from-outcome>editSuccess</from-outcome>
			<to-view-id>/user/useraccount.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-outcome>changePassword</from-outcome>
			<to-view-id>/user/changepassword.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>

<navigation-rule>
		<from-view-id>/user/changepassword.jsp</from-view-id>
		<navigation-case>
			<from-outcome>success</from-outcome>
			<to-view-id>/user/changepasswordsuccess.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-outcome>failure</from-outcome>
			<to-view-id>/user/changepassword.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>

<navigation-rule>
		<from-view-id>*</from-view-id>
		<navigation-case>
			<from-outcome>gotomain</from-outcome>
			<to-view-id>/user/success.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>

<navigation-rule>
		<from-view-id>/user/useraccount.jsp</from-view-id>
		<navigation-case>
			<from-action>#{userForm.saveUser}</from-action>
			<from-outcome>successUserRegistration</from-outcome>
			<to-view-id>/user/newaccountsuccess.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-action>#{userForm.saveUser}</from-action>
			<from-outcome>successUserUpdate</from-outcome>
			<to-view-id>/user/userUpdateSuccess.jsp</to-view-id>
		</navigation-case>
		<navigation-case>
			<from-action>#{userForm.saveUser}</from-action>
			<from-outcome>error</from-outcome>
			<to-view-id>/user/useraccount.jsp</to-view-id>
		</navigation-case>
	</navigation-rule>

</faces-config>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<display-name>a4jEchoText</display-name>
		<context-param>
			<param-name>org.richfaces.SKIN</param-name>
			<param-value>blueSky</param-value>
		</context-param>
		<context-param>
			<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
			<param-value>server</param-value>
		</context-param>
		
		<filter>
			<display-name>RichFaces Filter</display-name>
			<filter-name>richfaces</filter-name>
			<filter-class>org.ajax4jsf.Filter</filter-class>
		</filter>
		<filter-mapping>
			<filter-name>richfaces</filter-name>
			<servlet-name>Faces Servlet</servlet-name>
			<dispatcher>REQUEST</dispatcher>
			<dispatcher>FORWARD</dispatcher>
			<dispatcher>INCLUDE</dispatcher>
		</filter-mapping>

<filter>
			<display-name>Ajax4jsf Filter</display-name>
			<filter-name>ajax4jsf</filter-name>
			<filter-class>org.ajax4jsf.Filter</filter-class>
		</filter>
		<filter-mapping>
			<filter-name>ajax4jsf</filter-name>
			<servlet-name>Faces Servlet</servlet-name>
			<dispatcher>FORWARD</dispatcher>
			<dispatcher>REQUEST</dispatcher>
			<dispatcher>INCLUDE</dispatcher>
		</filter-mapping>

<servlet>
		<servlet-name>Faces Servlet</servlet-name>  
		<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
		<load-on-startup>1</load-on-startup>
	</servlet>

<servlet-mapping>
		<servlet-name>Faces Servlet</servlet-name>
		<url-pattern>*.jsf</url-pattern>
	</servlet-mapping>
</web-app>

LoginForm:

package com.form;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.faces.context.FacesContext;
import javax.servlet.http.HttpSession;

public class LoginForm  {
	private String text;
	private String userName;
	private String password;

public String getUserName() {
		return userName;
	}
	public void setUserName(String userName) {
		this.userName = userName;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String getText() {
		return text;
	}
	public void setText(String text){
		this.text = text;
	}

String url = "jdbc:mysql://localhost:3306/";
    String db = "dev_phra";
    String driver = "com.mysql.jdbc.Driver";
    String user = "root";
    String pass = "phra";
	Connection con = null;
    ResultSet res;

public String validUser() throws Exception{
		String returnString = "success";
		try{
			Class.forName(driver);
			try{
				con = DriverManager.getConnection(url+db, user, pass);
				Statement st = con.createStatement();
				String query="SELECT * FROM  register where userName='"+  userName + "' && password='" + password+"'";
				res = st.executeQuery(query);
				if(res.next()){					
					int id = res.getInt("id");
					String username = res.getString("userName");
				//	String t = res.getString("password");
					
					FacesContext context = FacesContext.getCurrentInstance();
					HttpSession session = (HttpSession) context.getExternalContext().getSession(true);
					session.setAttribute("id", id);
					session.setAttribute("username", username);
				}
				else{
					setText("User Name or Password is incorrect.");
					returnString = "failure";
				}
			}
			catch (SQLException s){
				System.out.println(s);
			}
		}
		catch (ClassNotFoundException s){
			System.out.println(s);
		}
		return returnString;
	}

public String logout(){
		FacesContext context = FacesContext.getCurrentInstance();
		HttpSession session = (HttpSession) context.getExternalContext().getSession(true);
		if(session==null){
			return "invalid";
		}
		else{
			session.invalidate();
			return "logoutsuccess";
		}
		
	}

}

Thanks for the help.

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