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 by 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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108 Comments

  1. chinnu says:

    please provide struts 1.2 server side and client side validation

  2. jj says:

    Hi I read about this CustomerAction but I don’t see any codes for that. Can anyone enlighten me? Thanks

  3. Viral Patel says:

    Hi JJ,
    CustomerAction class file is a normal implementation of Action class that does not have anything special in it. The error handling is done using Validation framework. CustomerAction class will not be invoked in case of any validation errors.

  4. ghast says:

    Simple & to the point.
    Good article for the beginners.

  5. Very good I leaned jar file creation in one shot

  6. neeraj says:

    Hi All,
    actually when i run this application , i got this exception
    java.lang.NoClassDefFoundError: org/apache/commons/validator/ValidatorResources

    i loaded all necessary jar file but couldnot solve this problem can anyone tell me why this happening.
    Thanks

  7. Viral Patel says:

    Hi Neeraj,
    Can you give the list of the jars that you have used in the project. Check struts-validation jar and struts.jar file. Open these jars and see if the class ValidatorResources is available. I am very sure the problem is with the jar only.

  8. krishna kumar sahu says:

    THANKS,
    I was vary confuse about this .

  9. krishna kumar sahu says:

    sorry ,
    in my system same this program generate different result it’s print the welcome statement which is wrote in MessageResource.properties file . ?
    why this msg is shown ?
    now what can I do .?

  10. thangeswaran says:

    good.thank u.i like very much for this site

  11. Viral Patel says:

    Thanks for the comment Thangeswaran. :) Feel free to subscribe for Email or RSS feed and get the latest articles.

  12. Thulasiram says:

    Hi all
    Actually when i run this application i got the errors like this..Could u please help me out in solving this error.

    org.apache.jasper.JasperException: org.apache.commons.validator.ValidatorResources.get(Ljava/util/Locale;Ljava/lang/Object;)Lorg/apache/commons/validator/Form;
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:460)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:355)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

    root cause

    javax.servlet.ServletException: org.apache.commons.validator.ValidatorResources.get(Ljava/util/Locale;Ljava/lang/Object;)Lorg/apache/commons/validator/Form;
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:841)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:774)
    org.apache.jsp.customer_jsp._jspService(customer_jsp.java:99)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

    root cause

    java.lang.NoSuchMethodError: org.apache.commons.validator.ValidatorResources.get(Ljava/util/Locale;Ljava/lang/Object;)Lorg/apache/commons/validator/Form;
    org.apache.struts.taglib.html.JavascriptValidatorTag.doStartTag(JavascriptValidatorTag.java:316)
    org.apache.jsp.customer_jsp._jspx_meth_html_005fjavascript_005f0(customer_jsp.java:132)
    org.apache.jsp.customer_jsp._jspService(customer_jsp.java:85)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

  13. marken says:

    hi all

    i have 1problem,when the validate framework send message to client ,how can i make the form element() onfocus

  14. Viral Patel says:

    Hi Marken, I guess Struts does not provide any mechanism for focusing the element having error.

  15. marken says:

    hi Viral Patel ,i have some questions

    first: when i use in my project
    it will create lots of js code in my html page code .Can it only create the js which is i defined in
    the validate.xml,for example i defined “ ” ,it only create the required js.

    second : when i use validation in service and validate is failed ,how my client html field onfoucs . for example html field ,when the user is validate failed ,how can on focus

  16. Viral Patel says:

    @marken, The javascript code that is being generated by Struts is not very configurable. When we use tag , it generates all those javascript. You may want to disable client side validation by removing this tag altogether.

    As I said, I am not aware of any mechanism provided by Struts to call onfocus of element if validation fails.

    I will suggest to use Struts validation for server side validation.

  17. ashok says:

    i want a simple example using struts and mysql..

  18. Tarun says:

    I have got the exception while doing the validation please give me suggestion

    javax.servlet.jsp.JspException: Missing message for key “label.name”
    at org.apache.struts.taglib.bean.MessageTag.doStartTag(MessageTag.java:297)
    at org.apache.jsp.actionform.index_jsp._jspx_meth_bean_005fmessage_005f0(index_jsp.java:195)
    at org.apache.jsp.actionform.index_jsp._jspx_meth_html_005fform_005f0(index_jsp.java:126)
    at org.apache.jsp.actionform.index_jsp._jspService(index_jsp.java:88)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    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:175)
    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:263)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Unknown Source)

  19. JavaTrainer says:

    Nice work. Keep it up.

  20. Madhu says:

    The article was very good. It worked at the first instance for me.
    The validations mentioned in this example are only client side, not server side.

  21. Viral Patel says:

    Hi Madhu, Thanks for the comment.
    The above example does the server side validation as well. Please comment out the following code to check server side validation:

    <html:javascript formName="CustomerForm" />
    
  22. Namrata says:

    Hi,
    I am new to validation and have the following doubts.

    1. The jsp file that you mentioned above – is it ‘index.jsp’ or ‘customer.jsp’
    2. What should be there in index.jsp :
    in this part in place of “login”
    Kindly help.

  23. Namrata says:

    Hi,
    I am getting the following error when I run. What exactly are we supposed to have in the index.jsp and customer.jsp files.

    javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:850)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:779)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:102)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

    • Viral Patel says:

      @namrata, The above JSP will be called index.jsp. Customer.jsp will be a dummy JSP to display success message. You can have following content in Customer.jsp

      <h3>Customer Added Successfully.</h3>
      
  24. Namrata says:

    “Cannot find ActionMappings or ActionFormBeans collection”

    This problem is still there. Could you help me with this!!

  25. Namrata says:

    Hi, the problem got fixed. I had the wrong web.xml. But now my problem is similar to that of Tarun.

    Missing message for key “label.username”

    I have not used this anywhere…

  26. Namrata says:

    Could you also provide the validator-rules.xml file?

  27. Namrata says:

    Hi,
    My code is finally up and running. Sorry for bombarding you with so many queries :).
    When I enter the correct values, the result is a success and the correct jsp is displayed. But, when I enter the wrong value, the result is a failure and again index.jsp is displayed … right?? The errors etc are not getting displayed. What could be the problem?

  28. Namrata says:

    Unfortunately, now it is giving this error :(

    exception

    org.apache.jasper.JasperException: java.lang.NullPointerException
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:522)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

    root cause

    java.lang.NullPointerException
    org.apache.struts.taglib.html.JavascriptValidatorTag.renderJavascript(JavascriptValidatorTag.java:367)
    org.apache.struts.taglib.html.JavascriptValidatorTag.doStartTag(JavascriptValidatorTag.java:349)
    org.apache.jsp.index_jsp._jspx_meth_html_005fjavascript_005f0(index_jsp.java:141)
    org.apache.jsp.index_jsp._jspService(index_jsp.java:92)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:337)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:803)

  29. I’m often searching for brand-new articles in the WWW about this matter. Thankz!

  30. shijuk says:

    hi jj
    can u tel this is serverside validation or client side validation …plz i am confused

    • Viral Patel says:

      @shijuk, This example shows both the server as well as client side validation.

  31. Sheetal says:

    Hi Viral,

    This article is really very nice, simple and well written.

    Thanks and Good Luck for future articles.

  32. RJ says:

    Hi VP

    I have done same done the same code for login page. In the username filed, I have set two constraints which are not null and do not allow special char. When I executed, I am got only username is required for required attribute. but mask msg is not come, if entered special char.
    my validation.xml code is here.
    Please correct me, if i did any wrong.

    Advance thanks
    RJ

  33. RJ says:

    mask
    ^[0-9a-zA-Z]*S

  34. Richard says:

    I am new to the validator use. My question is whether you can use the validator without struts. If yes how can I do it?

    • Viral Patel says:

      @Richard: My answer to that question will be Yes. You can use Validator without using Struts. There is an example source in validator’s repository. I hope this helps.

  35. Jay says:

    I actually have a problem like Thulasiram one but client side :

    The error :
    Error 500: org/apache/commons/validator/ValidatorResources.get(Ljava/util/Locale;Ljava/lang/Object;)Lorg/apache/commons/validator/Form;

    appears in my browser when I try to reach the jsp (BEFORE filling the form). Do you have any idea?

  36. Jay says:

    Ok I updated my commons_validator.jar and it works fine…

  37. Neelam says:

    hello viral
    this tutorial has helped me a lot…
    I just wanted to know in jsp file what is “/customer” in ..is it a servlet?? also I m using Netbeans6.8 and glassfish v3 server why it is not compiling?? is it neccessary to use tomcat server?….kindly reply..
    Regards
    Neelam

    • Viral Patel says:

      @Neelam: The value “/customer” in index.jsp is action mapping. Note that in struts-config.xml we have defined action CustomerAction with path=”/customer”. This is mapped in JSP form using <html:form action=”/customer”>

      You must check the dependencies that you have in your project. The above example was created using Eclipse with Tomcat so it has Tomcat jars in dependencies. You may want to remove this and add Glassfish dependencies.

  38. Neelam says:

    thankyou so much for your reply….
    I have heared that Glassfish doesn’t have any control over Struts code ..is it true…b’coz I have addedd glassfish jars but its still not working…
    what I should do?
    do you have same example made in netbeans and glssfish…or can you give any tutorials related to this…
    please help
    thanx and regards

    • Viral Patel says:

      @Neelam: You have to add all the jar files including struts jars in your project in order to compile without error. Glassfish is just a container that can run your servlet/j2ee code. To run a struts project you still will need struts jars.

  39. Gopal kumar says:

    how much validate in used in xml. And given list of Event && Properties all the comtrol use in asp.net.
    Regards
    Gopal

  40. peace says:

    hi ,

    i have try this source code, but why my message doesn’t appear…can anyone help me.

    tq

  41. Gaurav says:

    Hi Viral
    i have tried this example….it shows error when i made any invalid entry like name is required etc….but when all the entries are valid it shows following error
    exception

    javax.servlet.ServletException: Servlet execution threw an exception

    root cause

    java.lang.NoSuchMethodError: org.apache.struts.config.ForwardConfig.getContextRelative()Z
    org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:302)
    org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:232)
    org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
    org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

    I have created CustomerAction.java also.

  42. karthik says:

    hi,
    is there anyway to short circuit the errors?
    That is, if there is any error with the first field. It should display the first field is required, and stop validating other fields.

    thanks.

  43. karthik says:

    We can do the same in Struts 2,
    by using shortCircuit=”true”.
    is there any such attribute in struts 1 validation.xml

  44. mary says:

    We have a large website that uses struts 1.2.9 with validation. We found testing the server side validation, the errors are returned but the fields which are not html tagged on the screen are lost because we use request scope. Is there a way to direct the form validation to the action class to reload the form bean? Since we have large number of classes, would like to keep from having to do a large number of changes in each action class.

  45. harika says:

    this site help us more

  46. ganesh says:

    we need action form

  47. dj_java says:

    dear Viral
    I want to write a rule for user’s password with some rules, like password should have one special character,One capital letter,one small letter and length should not less than 8 and more than 15.
    Please help

  48. Venkat says:

    Viral,
    How can I validate double byte characters (like Japanese chars) using validator?. Thanks in advance.

  49. Gourav says:

    hi Viral,
    i have some problem
    you are displaying all the errors together
    what if i want to display the error in front of the field which cause the error
    means what is to be given in the property attribute of the tag.

    and second how we can perform client side validation

    thanks..

  50. Mark Jaeger says:

    Here’s how I did password validation:

    
          twoDigitsInString
          ^[a-zA-Z0-9]*?[0-9]{1,}[a-zA-Z0-9]*?[0-9]{1,}[a-zA-Z0-9]*?$
    
    
    entry New Password minlength 8 maxlength 12 mask ${twoDigitsInString}
  51. krishna says:

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

  52. 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)

  53. 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.

  54. 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

  55. 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.

  56. atul says:

    thanks

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

  58. Akshay says:

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

  59. 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?

  60. 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)

  61. sid says:

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

  62. 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)

  63. 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.

  64. 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?

  65. 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

  66. 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.

  67. avantika says:

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

  68. 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.

  69. 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.

  70. abhimeet says:

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

  71. lalitha says:

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

  72. 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

  73. dalmiya says:

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

  74. ravi says:

    Can you plz send me an example of validator action form

  75. 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

  76. 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

  77. 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:

  78. Engin Sahin says:

    html:javascript formName=”CustomerForm” exception

  79. crocosaurus says:

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

  80. inaki says:

    Thanks for sharing your knowledge.
    Best Regards

  81. dsin says:

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

  82. 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.

  83. 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.

  84. atul says:

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

    pls help me!

  85. 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

  86. Abhijeet says:

    It works fine for me……………………………….

  87. 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)
    
  88. 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

  89. nandu says:

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

  90. Hari says:

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

  91. shiva says:

    some more details of above code

  92. 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.

  93. 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.

  94. venkat says:

    Thanks for sharing your knowledge.
    Best Regards

  95. Dinesh says:

    Very good Post thanks for sharing this.

  96. Prajakta says:

    Thank u so much..

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