JSF binding attribute
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December 30, 2008 at 5:47 AM
Hi friend,
Code to help in solving the problem :
JavaBeans are used to associate the UI components. This backing bean (JavaBean) contains properties that are bound to either component value or component instance. Both types of binding requires use of Expression Language (EL) syntax. A component instance can be bound to the bean property by referencing the property in the "binding" attribute of the tag associated with the component.
"login.jsp"
<%@ taglib uri="http://java.sun.com/jsf/html"; prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f" %>
<f:view>
<html>
<head><title>JSF Login Example By Using Component Binding</title></head>
<body>
<h:form>
<table>
<tr>
<td><h:outputText value="Enter Login ID: " /></td>
<td><h:inputText id="loginname"
binding="#{LoginWithCompBinding.loginname}" /></td>
</tr>
<tr>
<td><h:outputText value="Enter Password: " /></td>
<td><h:inputSecret id="password"
binding="#{LoginWithCompBinding.password}" /></td>
</tr>
<tr>
<td> </td>
<td><h:commandButton value="Login"
action="#{LoginWithCompBinding.CheckValidUser}" /></td>
</tr>
</table>
</h:form>
</body>
</html>
</f:view>
Code to help in solving the problem :
JavaBeans are used to associate the UI components. This backing bean (JavaBean) contains properties that are bound to either component value or component instance. Both types of binding requires use of Expression Language (EL) syntax. A component instance can be bound to the bean property by referencing the property in the "binding" attribute of the tag associated with the component.
"login.jsp"
<%@ taglib uri="http://java.sun.com/jsf/html"; prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f" %>
<f:view>
<html>
<head><title>JSF Login Example By Using Component Binding</title></head>
<body>
<h:form>
<table>
<tr>
<td><h:outputText value="Enter Login ID: " /></td>
<td><h:inputText id="loginname"
binding="#{LoginWithCompBinding.loginname}" /></td>
</tr>
<tr>
<td><h:outputText value="Enter Password: " /></td>
<td><h:inputSecret id="password"
binding="#{LoginWithCompBinding.password}" /></td>
</tr>
<tr>
<td> </td>
<td><h:commandButton value="Login"
action="#{LoginWithCompBinding.CheckValidUser}" /></td>
</tr>
</table>
</h:form>
</body>
</html>
</f:view>
December 30, 2008 at 5:47 AM
"LoginWithCompBinding.java" Javabean
package roseindia;
import javax.faces.component.html.HtmlInputSecret;
import javax.faces.component.html.HtmlInputText;
public class LoginWithCompBinding{
HtmlInputText loginname;
HtmlInputSecret password;
public LoginWithCompBinding(){}
public String CheckValidUser(){
if(loginname.getValue().equals("administrator") &&
password.getValue().equals("admin"))
return "success";
else
return "fail";
}
public HtmlInputText getLoginname(){
return loginname;
}
public void setLoginname(HtmlInputText loginname){
this.loginname = loginname;
}
public HtmlInputSecret getPassword(){
return password;
}
public void setPassword(HtmlInputSecret password){
this.password = password;
}
}
package roseindia;
import javax.faces.component.html.HtmlInputSecret;
import javax.faces.component.html.HtmlInputText;
public class LoginWithCompBinding{
HtmlInputText loginname;
HtmlInputSecret password;
public LoginWithCompBinding(){}
public String CheckValidUser(){
if(loginname.getValue().equals("administrator") &&
password.getValue().equals("admin"))
return "success";
else
return "fail";
}
public HtmlInputText getLoginname(){
return loginname;
}
public void setLoginname(HtmlInputText loginname){
this.loginname = loginname;
}
public HtmlInputSecret getPassword(){
return password;
}
public void setPassword(HtmlInputSecret password){
this.password = password;
}
}
December 30, 2008 at 5:48 AM
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>
<managed-bean>
<managed-bean-name>LoginWithCompBinding</managed-bean-name>
<managed-bean-class>roseindia.LoginWithCompBinding</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<from-view-id>/pages/login.jsp</from-view-id>
<navigation-case>
<from-action>#{LoginWithCompBinding.CheckValidUser}</from-action>
<from-outcome>success</from-outcome>
<to-view-id>/pages/resultforsuccess.jsp</to-view-id>
</navigation-case>
<navigation-case>
<from-action>#{LoginWithCompBinding.CheckValidUser}</from-action>
<from-outcome>fail</from-outcome>
<to-view-id>/pages/resultforfail.jsp</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
For read more information on JSF visit to :
http://www.roseindia.net/jsf/
Thanks
<?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>
<managed-bean>
<managed-bean-name>LoginWithCompBinding</managed-bean-name>
<managed-bean-class>roseindia.LoginWithCompBinding</managed-bean-class>
<managed-bean-scope>request</managed-bean-scope>
</managed-bean>
<navigation-rule>
<from-view-id>/pages/login.jsp</from-view-id>
<navigation-case>
<from-action>#{LoginWithCompBinding.CheckValidUser}</from-action>
<from-outcome>success</from-outcome>
<to-view-id>/pages/resultforsuccess.jsp</to-view-id>
</navigation-case>
<navigation-case>
<from-action>#{LoginWithCompBinding.CheckValidUser}</from-action>
<from-outcome>fail</from-outcome>
<to-view-id>/pages/resultforfail.jsp</to-view-id>
</navigation-case>
</navigation-rule>
</faces-config>
For read more information on JSF visit to :
http://www.roseindia.net/jsf/
Thanks
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