Java Tutorial Blog

Display error messages in JSF [ h:messages ] – part 1

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  • Topic : Java Server Faces (JSF)
  • Environment : J2EE 5.0, MyFaces 1.1.5

errorMessage.jsp

also read:

 <!-- Source : www.javabeat.net -->
	<html>
		<body>
			<f:view>
				<h:form id="select">
					<h:messages />
					<h:inputText id="name" value="#{errorMessageBean.name}"/>
					<h:commandButton value="Submit" action="#{errorMessageBean.submit}"/>
					</h:form>
				</f:view>
			</body>
		</html>

ErrorMessageBean.java

/** * Source : www.javabeat.net * */
package net.javabeat.myfaces.error;

import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;

public class ErrorMessageBean {
	private String name;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String submit() {
		String viewId = "";
		if (this.name == null || this.name.length() == 0) {
			FacesMessage fm = new FacesMessage("Field is Empty");
			FacesContext.getCurrentInstance().addMessage("Field is Empty", fm);
			viewId = "errorMessageBeanSuccess";
		} else {
			FacesMessage fm = new FacesMessage("Validation Success");
			FacesContext.getCurrentInstance().addMessage("Field is Empty", fm);
			viewId = "errorMessageBeanFail";
		}
		return viewId;
	}
}

faces-config.xml

	<managed-bean>
		<managed-bean-name> errorMessageBean </managed-bean-name>
		<managed-bean-class> net.javabeat.myfaces.error.ErrorMessageBean </managed-bean-class>
		<managed-bean-scope> request </managed-bean-scope>
	</managed-bean>
	<navigation-rule>
		<navigation-case>
			<from-outcome> errorMessageBeanSuccess </from-outcome>
			<to-view-id> /pages/error/errorMessageResult.jsp </to-view-id>
		</navigation-case>
	</navigation-rule>
	<navigation-rule>
		<navigation-case>
			<from-outcome> errorMessageBeanFail </from-outcome>
			<to-view-id> /pages/error/errorMessage.jsp </to-view-id>
		</navigation-case>
	</navigation-rule>

errorMessageResult.jsp

	<!-- Source : www.javabeat.net -->
	<html>
		<body>
			<f:view>
				<h:form id="select">
					<h:messages/>
				</h:form>
			</f:view>
		</body>
	</html>

About Krishna Srinivasan

He is Founder and Chief Editor of JavaBeat. He has more than 8+ years of experience on developing Web applications. He writes about Spring, DOJO, JSF, Hibernate and many other emerging technologies in this blog.