Struts Validation Framework Tutorial with example.

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Apache Struts has changed the way we develop a Web application. Since its inception as an MVC architecture, Struts has been extensively used in J2EE world to develop robust, extendable and effective web applications.

Introduction to Struts Validation Framework

[ad name=”AD_INBETWEEN_POST”] One of the important features of Struts framework is Struts Validation framework that performs validation on incoming form data. Validation framework was introduced┬áby David Winterfeldt as an external plugin to Struts framework. It’s functionality has since been split so that validator can serve as the basis for a independant component and is now part of Jakarta Commons.

The Struts framework’s simple validation interface alleviates much of the headache associated with handling data validation, allowing you to focus on validation code and not on the mechanics of capturing data and redisplaying incomplete or invalid data.

In order to do form validation without Validator framework, one has to use validate() method of the form bean (ActionForm class) to perform this task. Also one has to handle error messages during manual validation. Lot of fields that we validate require same logic to validate them, hence code is unneccessarily duplicated (if not managed properly).

Validation framework comes with set of useful routines to handle form validation automatically and it can handle both server side as well as client side form validation. If certain validation is not present, you can create your own validation logic and plug it into validation framework as a re-usable component.

Validator uses two XML configuration files to determine which validation routines should be installed and how they should be applied for a given application, respectively. The first configuration file, validator-rules.xml, declares the validation routines that should be plugged into the framework and provides logical names for each of the validations. The validator-rules.xml file also defines client-side JavaScript code for each validation routine. Validator can be configured to send this JavaScript code to the browser so that validations are performed on the client side as well as on the server side.

The second configuration file, validation.xml, defines which validation routines should be applied to which Form Beans. The definitions in this file use the logical names of Form Beans from the struts-config.xml file along with the logical names of validation routines from the validator-rules.xml file to tie the two together.

Using the Validator framework involves enabling the Validator plug-in, configuring Validator’s two configuration files, and creating Form Beans that extend the Validator’s ActionForm subclasses. The following sections explain in detail how to configure and use Validator.

Create a Struts project

Create a struts web application project. I assume you have working environment set for a Struts project. If not then go through the tutorial: Creating Struts application using Eclipse and create a struts project.

Create Form Beans

struts validator form bean
Create a form bean in your project called CustomerForm and copy following code in it.

package net.viralpatel.struts.validation.form;

import org.apache.struts.validator.ValidatorForm;

public class CustomerForm extends ValidatorForm {
	
	private String name;
	private String telephone;
	private String email;
	private int age;

	public String getName() {
		return name;
	}

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

	public String getTelephone() {
		return telephone;
	}

	public void setTelephone(String telephone) {
		this.telephone = telephone;
	}

	public String getEmail() {
		return email;
	}

	public void setEmail(String email) {
		this.email = email;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}
}

We will use this validator plugin to validate this form. Note that the form bean is extended from class ValidatorForm and not ActionForm as we generally do in Struts project.

Add Validator Plug-in in struts-config.xml

In order to use Validator in our project we need to configure it in struts-config.xml file. For this add following code in your struts-config.xml file.

<!-- Validator Configuration -->
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
	<set-property property="pathnames"
		value="/WEB-INF/validator-rules.xml,
				/WEB-INF/validation.xml" />
</plug-in>

This definition tells Struts to load and initialize the Validator plug-in for your application. Upon initialization, the plug-in loads the comma-delimited list of Validator config files specified by the pathnames property. Each config file’s path should be specified by use of a Web application-relative path, as shown in the previous example.

Define validations for the form

validation.xml file struts validator framework

Create a file validation.xml in your applications WEB-INF directory. And copy following content in it.

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE form-validation PUBLIC
          "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN"
          "http://jakarta.apache.org/commons/dtds/validator_1_1_3.dtd">
<form-validation>
<global>
	<constant>
	<constant-name>telephoneFormat</constant-name>
	<constant-value>^\d{5,10}$</constant-value>
	</constant>
</global>
<formset>
	<form name="CustomerForm">
		<field property="name" depends="required">
			<arg key="label.name" />
		</field>
		<field property="age" depends="required, integer, intRange">
			<arg0 key="label.age" />
			<arg1 key="${var:min}" resource="false"/>
			<arg2 key="${var:max}" resource="false"/>
			<var>
				<var-name>min</var-name>
				<var-value>1</var-value>
			</var>
			<var>
				<var-name>max</var-name>
				<var-value>125</var-value>
			</var>
		</field>
		<field property="telephone" depends="required, mask">
			<arg key="label.telephone" />
			<arg1 key="label.telephone" />
			<var>
				<var-name>mask</var-name>
				<var-value>${telephoneFormat}</var-value>
			</var>
		</field>
		<field property="email" depends="email">
			<arg0 key="label.email" />
			<arg1 key="label.email" />
		</field>
	</form>
</formset>
</form-validation>

In the above xml file, we have defined the rules for form validation. Note that we are validating form CustomerForm and the fields being validated are name, age, telephone and email. <field> tag defines the validation for a property of form. We can specify different rules like required, integer, email, intRange, mask etc in depends attribute of field tag..

Also you can define constants that can be reused in the validation xml using global constants tag.

Struts-config.xml entry for the action

Following is the entry in struts-config.xml file which maps the Action to our Validator form.

<form-beans>
	<form-bean name="CustomerForm"
		type="net.viralpatel.struts.validation.form.CustomerForm" />
</form-beans>
...
...
...
<action-mappings>
...
	<action path="/customer" name="CustomerForm" validate="true"
		input="/index.jsp"
		type="net.viralpatel.struts.validation.action.CustomerAction">
		<forward name="success" path="/Customer.jsp" />
		<forward name="failure" path="/index.jsp" />
	</action>
...
</action-mappings>

Configuring ApplicationResources.properties

Struts validation framework uses externalization of the error messages. The messages are stored in a property file (ApplicationResource.properties) and are referred by the key values. Copy following in your ApplicationResource.properties (or MessageResource.properties).

label.name= Name
label.email= Email
label.telephone= Telephone
label.age= Age


# general error msgs
errors.header=<font size="2"><UL>
errors.prefix=<LI><span style="color: red">
errors.suffix=</span></LI>
errors.footer=</UL></font>
errors.invalid={0} is invalid.
errors.maxlength={0} can not be greater than {1} characters.
errors.minlength={0} can not be less than {1} characters.
errors.range={0} is not in the range {1} through {2}.
errors.required={0} is required.
errors.byte={0} must be an byte.
errors.date={0} is not a date.
errors.double={0} must be an double.
errors.float={0} must be an float.
errors.integer={0} must be an integer.
errors.long={0} must be an long.
errors.short={0} must be an short.

Create JSP to display the form

Create a JSP file called index.jsp and copy following content in it.

<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<html>
<head>
<title>Struts Validation Framework example.</title>
</head>
<body>

<html:errors />
<html:javascript formName="CustomerForm" />

<html:form action="/customer">

	<bean:message key="label.name" />
	<html:text property="name"></html:text>
	<br />
	<bean:message key="label.age" />
	<html:text property="age"></html:text>
	<br />
	<bean:message key="label.email" />
	<html:text property="email"></html:text>
	<br />
	<bean:message key="label.telephone" />
	<html:text property="telephone"></html:text>
	<br />

	<html:submit value="Submit"></html:submit>

</html:form>
</body>
</html>

Running the application

We are done with our application. Now execute it from any web container (Tomcat in my case) and open in browser.
struts validator form screen

Enter any invalid value in the form and press submit.

struts-validator-form-screen2

Post your comments / doubts on this tutorial.

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106 Comments

  1. krishna says:

    I want to know the flow of this example. I tried this i m not getting the output. so please help me.

  2. Shyam says:

    when i submit all bean property goes to success.jsp but the validation part is not working.
    plug in rules& validation.xml are added.

    eclipse & tomcat6.0 i am using.
    errors on console after submit —->

    ug 19, 2010 4:42:49 PM org.apache.struts.validator.ValidatorForm validate
    SEVERE: org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionErrors, javax.servlet.http.HttpServletRequest)
    org.apache.commons.validator.ValidatorException: org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionErrors, javax.servlet.http.HttpServletRequest)
    at org.apache.commons.validator.ValidatorAction.loadValidationMethod(ValidatorAction.java:627)
    at org.apache.commons.validator.ValidatorAction.executeValidationMethod(ValidatorAction.java:557)
    at org.apache.commons.validator.Field.validateForRule(Field.java:827)
    at org.apache.commons.validator.Field.validate(Field.java:906)
    at org.apache.commons.validator.Form.validate(Form.java:174)
    at org.apache.commons.validator.Validator.validate(Validator.java:367)
    at org.apache.struts.validator.ValidatorForm.validate(ValidatorForm.java:110)
    at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:950)
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:207)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
    at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
    at java.lang.Thread.run(Unknown Source)

  3. Shyam says:

    Viral its a diff. problem — when i am connected to the NET the code works fine …. i have given the URI of jsp html & bean tld of ” WEB-INF ” so what should i do to work at a stand alone system.

    pls help. Thank in advance.

  4. Suhasini says:

    Hi Viral,

    Can you please tell me where to put properties file in our application..
    Thanx in advance..

    • manju says:

      hi suhasini,,,,make a source folder on Java Resources and create a new file with the name applicationresources.properties in it,,,,,thats it.

    • rama says:

      the property file put always in under web-inf floder

      • karthik says:

        rama
        properties file put under src

  5. Chandra Sekhar says:

    Hi friends
    I have executed above login application. These are the errors I got.
    exception

    org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: ValidatorResources not found in application scope under key “org.apache.commons.validator.VALIDATOR_RESOURCES”
    root cause
    javax.servlet.ServletException: javax.servlet.jsp.JspException: ValidatorResources not found in application scope under key “org.apache.commons.validator.VALIDATOR_RESOURCES”
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
    root cause
    javax.servlet.jsp.JspException: ValidatorResources not found in application scope under key “org.apache.commons.validator.VALIDATOR_RESOURCES”
    org.apache.struts.taglib.html.JavascriptValidatorTag.renderJavascript(JavascriptValidatorTag.java:373)
    Could u plz help me to solve these errors…….
    Thankz in advance.

  6. atul says:

    thanks

  7. hello sir,
    this example is very good, but u explain different validations,

  8. Akshay says:

    I am getting Error :– Exception creating bean of class CustomerForm.
    Please help

  9. Abhishek says:

    When I ran this program I got an error mentioning….java.lang.NullPointerException: Depends string “required” was not found in validator-rules.xml.
    please tell me what I need do now?

  10. I’ve tried to execute this Struts validator example:

    But when running on server, its giving the below error:

    Feb 4, 2011 12:23:15 AM org.apache.catalina.core.AprLifecycleListener init
    INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Feb 4, 2011 12:23:16 AM org.apache.tomcat.util.digester.SetPropertiesRule begin
    WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property ‘source’ to ‘org.eclipse.jst.jee.server:StrutsValidationExample’ did not find a matching property.
    Feb 4, 2011 12:23:16 AM org.apache.coyote.http11.Http11Protocol init
    INFO: Initializing Coyote HTTP/1.1 on http-8000
    Feb 4, 2011 12:23:16 AM org.apache.catalina.startup.Catalina load
    INFO: Initialization processed in 942 ms
    java.lang.NoClassDefFoundError: org/apache/commons/validator/ValidatorResourcesInitializer
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
    Caused by: java.lang.ClassNotFoundException: org.apache.commons.validator.ValidatorResourcesInitializer
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1491)
    … 22 more
    Feb 4, 2011 12:23:22 AM org.apache.catalina.core.StandardContext loadOnStartup
    SEVERE: Servlet /StrutsValidationExample threw load() exception
    java.lang.ClassNotFoundException: org.apache.commons.validator.ValidatorResourcesInitializer
    at org.apache.struts.validator.ValidatorPlugIn.initResources(ValidatorPlugIn.java:224)
    SEVERE: Servlet.service() for servlet jsp threw exception
    java.lang.NoSuchMethodError: org.apache.commons.validator.ValidatorResources.get(Ljava/util/Locale;Ljava/lang/Object;)Lorg/apache/commons/validator/Form;
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

  11. sid says:

    Please provide Your example code for download . so that Fresher can understand easily

  12. Rahul says:

    I m getting the below error.Plz help me
    SEVERE: Servlet.service() for servlet jsp threw exception
    javax.servlet.jsp.JspException: ValidatorResources not found in application scope under key “org.apache.commons.validator.VALIDATOR_RESOURCES”
    at org.apache.struts.taglib.html.JavascriptValidatorTag.renderJavascript(JavascriptValidatorTag.java:373)
    at java.lang.Thread.run(Thread.java:619)

  13. Azinyue says:

    I also getting the ValidatorResources not found – error, and nothing I have done so far seems to make this go away.
    I am using a struts 1.2 with commons-validator-1.3.1.jar hope this doesn’t mess things up for me. Pls help if possible.

  14. Baskar says:

    Thanks… Good Explanation.. But I would like to know the meaning of this line. “<html:javascript formName="CustomerForm" " . That is Any javascript is written or it will taken from xml file?

  15. pitchaiah says:

    i am working the struts validation for login page. I am not able to test the password consecutive.
    can you please help me how to test password consecutive.

    Like:- Admin123 is correct password
    AAdmin123 in not correct

    Regards,
    Pitch

  16. sujit says:

    Hello!!
    I tried to excute the thing, but the things are not working. One thing i want to ask is that ypu ahve mentioned about the validation-rules.xml. But you ahve not given any code for this xml file. SO can you plaes brief me about this validation-rules.xml . Thanks in advance.

  17. avantika says:

    i m getting http:status404 exception that the application cannot receive the Servlet action .
    kindly help me .
    Thanks in advance.

  18. satya says:

    Hi Sir,
    This example is good & easy to understand.
    But, where is the CustomerAction.java file?
    How to write that? Which logic has to implement in that?

    Thanks & Regards,
    Satya.

  19. abhimeet says:

    i m getting the following error.. reply fast.

    A form must be defined in the Commons Validator configuration when dynamicJavascript=”true” is set.

  20. abhimeet says:

    also i want to show the error msgs in an alert box.

  21. lalitha says:

    Hi,
    I am new to struts.. Can you please provide the CustomerAction class and customer.jsp files..

  22. Jonnathan Q says:

    Hi,

    I was wondering about this line “”, you put it into the code but you are not using it at all. By other hand, javascript code should be included into tags, i say “should” and not “must” because is not really mandatory but including javascript this way is just a matter of order. Back to the topic, that javascript line allows you to do the validation before the data is send to the server, so this saves you time and bandwidth, to use it you must add an event to your form, on the sample jsp code just put the form line like this: , so now instead of get some messages on the page body the messages will appear in a pop-up warning window

  23. dalmiya says:

    i want validation message time display……..image……..means…..for example……..wrong means ” X” this symbol………….right means “-/”

  24. ravi says:

    Can you plz send me an example of validator action form

  25. Naveen says:

    thank for ur all time support..!
    Sir i have follow u but I am not get any proper result.
    I am using struts1.1,jsp,springhibernateDao….when i cilck on submit it will generate not null error from hbm.xml file and if i changes in DB so it will add null value but not show any error

  26. Engin Sahin says:

    Hi
    Thank you for everything good example.
    i followu but

    org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 10

    7:
    8:
    9:
    10:
    11:
    12:

    13: why this is exception
    thank u

  27. Engin Sahin says:

    Sorry

    type Exception report

    message An exception occurred processing JSP page /index.jsp at line 10

    description The server encountered an internal error that prevented it from fulfilling this request.

    exception

    org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 10

    7:
    8:
    9:
    10:
    11:
    12:
    13:

  28. Engin Sahin says:

    html:javascript formName=”CustomerForm” exception

  29. crocosaurus says:

    Good tutorial!!…but, which version of struts are you using??

  30. inaki says:

    Thanks for sharing your knowledge.
    Best Regards

  31. dsin says:

    You can point the validator-rules to /org/apache/struts/validator/validator-rules.xml instead.

  32. Deboleena says:

    You have not written what to put in validator-rules.xml
    Please expalin that.

    • Viral Patel says:

      @Deboleena: You will get validator-rules.xml along with Struts 1.1 distribution. Download is from Struts website along with other required Jar files. For example: here’s the source code for validator-rules.xml from Struts source.

  33. pushpendra says:

    where is code for action form

    i think the post is incomplete

    • Viral Patel says:

      Hi Pushpendra, This post is in continuation of Struts Hello World article. The code for Action class is in that article.

  34. atul says:

    good eve sir
    this app gives warning org.apache.struts.util.PropertyMessageResource loadlocal
    Resource ApplicationResources not found

    pls help me!

  35. atul says:

    dear frnds ,
    if u found warning Resource your properties file name_en_US something then u have
    mistake something like
    1) we did not keep properties file in classes folder.
    2)

    and

    in action tag attributes value and html form action value does not same then this happen.
    or remove
    after that solve ur problem

  36. Abhijeet says:

    It works fine for me……………………………….

  37. Arun says:

    I am getting exception when submitting the form.can anyone help…
    In console:

    SEVERE: org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)
    org.apache.commons.validator.ValidatorException: org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest)
    	at org.apache.commons.validator.ValidatorAction.loadValidationMethod(ValidatorAction.java:627)
    	at org.apache.commons.validator.ValidatorAction.executeValidationMethod(ValidatorAction.java:557)
    	at org.apache.commons.validator.Field.validateForRule(Field.java:811)
    	at org.apache.commons.validator.Field.validate(Field.java:890)
    	at org.apache.commons.validator.Form.validate(Form.java:174)
    	at org.apache.commons.validator.Validator.validate(Validator.java:367)
    	at org.apache.struts.validator.ValidatorForm.validate(ValidatorForm.java:112)
    	at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:921)
    	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:206)
    	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
    	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
    	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    	at java.lang.Thread.run(Unknown Source)
    Jun 14, 2013 4:17:53 PM org.apache.struts.action.RequestProcessor processActionCreate
    SEVERE: No action instance for path /customer could be created
    java.lang.ClassCastException: validationform.CustomerForm cannot be cast to org.apache.struts.action.Action
    	at org.apache.struts.action.RequestProcessor.processActionCreate(RequestProcessor.java:282)
    	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:220)
    	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
    	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
    	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    	at java.lang.Thread.run(Unknown Source)
    
  38. Arun says:
     
    <%@ taglib uri="/WEB-INF/struts-html-1.1.tld" prefix="html"%>
    <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
    <html>
    <head>
    <title>Struts Validation Framework example.</title>
    </head>
    <body>
     
    <html:errors />
    <html:javascript formName="CustomerForm" />
     
    <html:form action="customer">
     
        <bean:message key="label.name" />
        <html:text property="name"></html:text>
        <br />
        <bean:message key="label.age" />
        <html:text property="age"></html:text>
        <br />
        <bean:message key="label.email" />
        <html:text property="email"></html:text>
        <br />
        <bean:message key="label.telephone" />
        <html:text property="telephone"></html:text>
        <br />
     
        <html:submit value="Submit"></html:submit>
     
    </html:form>
    </body>
    </html>
    
    
    
    
    
    
     
    • Arun says:
       
      struts-config>
          <form-beans>
              <form-bean name="CustomerForm"
                  type="validationform.CustomerForm" />
          </form-beans>
       
       
          <global-exceptions>
          </global-exceptions>
          <global-forwards></global-forwards>
       
          <action-mappings>
             <action path="/customer" name="CustomerForm"  validate="true"
              input="/index.jsp"
              type="validationform.CustomerForm">
              <forward name="success" path="/Customer.jsp" />
              <forward name="failure" path="/index.jsp" />
          </action>
          </action-mappings>
          <message-resources parameter="resources.ApplicationResources"></message-resources>
       <!-- Validator Configuration -->
      <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
          <set-property property="pathnames"
              value="/WEB-INF/validator-rules.xml,
                      /WEB-INF/validation.xml" />
      </plug-in>
      </struts-config>
      
      • mundip says:

        Action cannot be of type ActionForm in the ActionMapping in struts-config.xml file

  39. nandu says:

    whats the purpose of validator-rules.xml while validating a form in struts

  40. Hari says:

    I have already (extended myform Class with ActionForm Class) at that situation how can i validate email id….which enter by user………..

  41. shiva says:

    some more details of above code

  42. Sri says:

    HI Viral,
    I am able to get the server side validation but in client side validation i am not getting pop-up message.Please comment on it.Thanks in Advance.

  43. Rabindra says:

    Hi Viral,
    I want to make one reusable component for validation which can be plugged in with any framework.Can you suggest any idea please.

  44. venkat says:

    Thanks for sharing your knowledge.
    Best Regards

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