Saturday, January 29, 2011

Struts Validator Example

web.xml : 

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>Smaple</display-name>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<taglib>
<taglib-uri>/WEB-INF/struts-bean</taglib-uri>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-logic</taglib-uri>
<taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/WEB-INF/struts-html</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
</web-app>


Struts-config.xml : 

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN"
"http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">
<struts-config>
<data-sources />
<form-beans>
<form-bean name="LoginForm" type="com.test.LoginFormBean" />
</form-beans>
<global-exceptions />
<global-forwards>
<forward name="error" path="/error.jsp" />
</global-forwards>
<action-mappings>
<action forward="/login.jsp" path="/home" type="org.apache.struts.ActionForward" />
<action input="/login.jsp" name="LoginForm" path="/login" type="com.test.LoginAction" validate="true">
<forward name="success" path="/layout.jsp" />
<forward name="failure" path="/failure.jsp" />
</action>
</action-mappings>
<controller />
<message-resources parameter="com/test/ApplicationResource" />
<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>

LoginAction.java : 

package com.test;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

public class LoginAction extends Action {
public ActionForward execute(ActionMapping maping, ActionForm form, HttpServletRequest request, HttpServletResponse response){
String returnParam = null;
LoginFormBean loginFormBean = (LoginFormBean)form;

String username = loginFormBean.getUsername();
String password = loginFormBean.getPassword();

System.out.println("Usename : " +username+ " Password : "+password);

if(username.equals("admin") && password.equals("admin")){
returnParam = "success";
}else{
returnParam = "failure";
}

return maping.findForward(returnParam);
}
}

Validation.xml : 

<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE form-validation PUBLIC
"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN"
"http://jakarta.apache.org/commons/dtds/validator_1_0.dtd">
<form-validation>

<global>
<!-- An example global constant
<constant>
<constant-name>postalCode</constant-name>
<constant-value>^\d{5}\d*$</constant-value>
</constant>
end example-->
</global>
<formset>
<form name="LoginForm">
<field
property="username"
depends="required">
<arg0 key="error.userName.required"/>
</field>
<field
property="password"
depends="required,mask">
<arg0 key="error.password.required"/>
<var>
<var-name>mask</var-name>
<var-value>^[0-9a-zA-Z]*$</var-value>
</var>
</field>
</form>
</formset>
</form-validation>

validation-rules.xml : 

<!DOCTYPE form-validation PUBLIC
"-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN"
"http://jakarta.apache.org/commons/dtds/validator_1_0.dtd">

<form-validation>
<global>
<validator name="required"
classname="org.apache.struts.validator.FieldChecks"
method="validateRequired"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
msg="errors.required">
<javascript><![CDATA[
function validateRequired(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oRequired = new required();
for (x in oRequired) {
var field = form[oRequired[x][0]];

if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'file' ||
field.type == 'select-one' ||
field.type == 'radio' ||
field.type == 'password') {

var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}

if (value == '') {

if (i == 0) {
focusField = field;
}
fields[i++] = oRequired[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>
<validator name="requiredif"
classname="org.apache.struts.validator.FieldChecks"
method="validateRequiredIf"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
org.apache.commons.validator.Validator,
javax.servlet.http.HttpServletRequest"
msg="errors.required">
</validator>
<validator name="minlength"
classname="org.apache.struts.validator.FieldChecks"
method="validateMinLength"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.minlength">
<javascript><![CDATA[
function validateMinLength(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oMinLength = new minlength();
for (x in oMinLength) {
if (form[oMinLength[x][0]].type == 'text' ||
form[oMinLength[x][0]].type == 'textarea') {
var iMin = parseInt(oMinLength[x][2]("minlength"));
if (form[oMinLength[x][0]].value.length < iMin) {
if (i == 0) {
focusField = form[oMinLength[x][0]];
}
fields[i++] = oMinLength[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>

<validator name="maxlength"
classname="org.apache.struts.validator.FieldChecks"
method="validateMaxLength"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.maxlength">
<javascript><![CDATA[
function validateMaxLength(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oMaxLength = new maxlength();
for (x in oMaxLength) {
if (form[oMaxLength[x][0]].type == 'text' ||
form[oMaxLength[x][0]].type == 'textarea') {
var iMax = parseInt(oMaxLength[x][2]("maxlength"));
if (form[oMaxLength[x][0]].value.length > iMax) {
if (i == 0) {
focusField = form[oMaxLength[x][0]];
}
fields[i++] = oMaxLength[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>

<validator name="mask"
classname="org.apache.struts.validator.FieldChecks"
method="validateMask"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.invalid">
<javascript><![CDATA[
function validateMask(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oMasked = new mask();
for (x in oMasked) {
if ((form[oMasked[x][0]].type == 'text' ||
form[oMasked[x][0]].type == 'textarea' ||
form[oMasked[x][0]].type == 'password') &&
(form[oMasked[x][0]].value.length > 0)) {
if (!matchPattern(form[oMasked[x][0]].value, oMasked[x][2]("mask"))) {
if (i == 0) {
focusField = form[oMasked[x][0]];
}
fields[i++] = oMasked[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function matchPattern(value, mask) {
var bMatched = mask.exec(value);
if (!bMatched) {
return false;
}
return true;
}]]>
</javascript>
</validator>

<validator name="byte"
classname="org.apache.struts.validator.FieldChecks"
method="validateByte"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.byte"
jsFunctionName="ByteValidations">
<javascript><![CDATA[
function validateByte(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oByte = new ByteValidations();
for (x in oByte) {
var field = form[oByte[x][0]];

if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {
var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}

if (value.length > 0) {
var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -128 && iValue <= 127)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oByte[x][1];
bValid = false;
}
}

}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>

<validator name="short"
classname="org.apache.struts.validator.FieldChecks"
method="validateShort"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.short"
jsFunctionName="ShortValidations">
<javascript><![CDATA[
function validateShort(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oShort = new ShortValidations();
for (x in oShort) {
var field = form[oShort[x][0]];

if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {

var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}

if (value.length > 0) {

var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -32768 && iValue <= 32767)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oShort[x][1];
bValid = false;
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>

<validator name="integer"
classname="org.apache.struts.validator.FieldChecks"
method="validateInteger"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.integer"
jsFunctionName="IntegerValidations">
<javascript><![CDATA[
function validateInteger(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oInteger = new IntegerValidations();
for (x in oInteger) {
var field = form[oInteger[x][0]];
if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {

var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}

if (value.length > 0) {

if (!isAllDigits(value)) {
bValid = false;
} else {
var iValue = parseInt(value);
if (isNaN(iValue) || !(iValue >= -2147483648 && iValue <= 2147483647)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oInteger[x][1];
bValid = false;
}
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function isAllDigits(argvalue) {
argvalue = argvalue.toString();
var validChars = "0123456789";
var startFrom = 0;
if (argvalue.substring(0, 2) == "0x") {
validChars = "0123456789abcdefABCDEF";
startFrom = 2;
} else if (argvalue.charAt(0) == "0") {
validChars = "01234567";
startFrom = 1;
}
for (var n = 0; n < argvalue.length; n++) {
if (validChars.indexOf(argvalue.substring(n, n+1)) == -1) return false;
}
return true;
}]]>
</javascript>
</validator>

<validator name="long"
classname="org.apache.struts.validator.FieldChecks"
method="validateLong"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.long"/>

<validator name="float"
classname="org.apache.struts.validator.FieldChecks"
method="validateFloat"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.float"
jsFunctionName="FloatValidations">
<javascript><![CDATA[
function validateFloat(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oFloat = new FloatValidations();
for (x in oFloat) {
var field = form[oFloat[x][0]];

if (field.type == 'text' ||
field.type == 'textarea' ||
field.type == 'select-one' ||
field.type == 'radio') {

var value = '';
// get field's value
if (field.type == "select-one") {
var si = field.selectedIndex;
if (si >= 0) {
value = field.options[si].value;
}
} else {
value = field.value;
}

if (value.length > 0) {

var iValue = parseFloat(value);
if (isNaN(iValue)) {
if (i == 0) {
focusField = field;
}
fields[i++] = oFloat[x][1];
bValid = false;
}
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>

<validator name="double"
classname="org.apache.struts.validator.FieldChecks"
method="validateDouble"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.double"/>

<validator name="date"
classname="org.apache.struts.validator.FieldChecks"
method="validateDate"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.date"
jsFunctionName="DateValidations">
<javascript><![CDATA[
function validateDate(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oDate = new DateValidations();
for (x in oDate) {
var value = form[oDate[x][0]].value;
var datePattern = oDate[x][2]("datePatternStrict");
if ((form[oDate[x][0]].type == 'text' ||
form[oDate[x][0]].type == 'textarea') &&
(value.length > 0) &&
(datePattern.length > 0)) {
var MONTH = "MM";
var DAY = "dd";
var YEAR = "yyyy";
var orderMonth = datePattern.indexOf(MONTH);
var orderDay = datePattern.indexOf(DAY);
var orderYear = datePattern.indexOf(YEAR);
if ((orderDay < orderYear && orderDay > orderMonth)) {
var iDelim1 = orderMonth + MONTH.length;
var iDelim2 = orderDay + DAY.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderDay && iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})(\\d{4})$");
} else if (iDelim1 == orderDay) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})[" + delim2 + "](\\d{4})$");
} else if (iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})(\\d{4})$");
} else {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})[" + delim2 + "](\\d{4})$");
}
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[2], matched[1], matched[3])) {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else if ((orderMonth < orderYear && orderMonth > orderDay)) {
var iDelim1 = orderDay + DAY.length;
var iDelim2 = orderMonth + MONTH.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderMonth && iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})(\\d{4})$");
} else if (iDelim1 == orderMonth) {
dateRegexp = new RegExp("^(\\d{2})(\\d{2})[" + delim2 + "](\\d{4})$");
} else if (iDelim2 == orderYear) {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})(\\d{4})$");
} else {
dateRegexp = new RegExp("^(\\d{2})[" + delim1 + "](\\d{2})[" + delim2 + "](\\d{4})$");
}
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[1], matched[2], matched[3])) {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else if ((orderMonth > orderYear && orderMonth < orderDay)) {
var iDelim1 = orderYear + YEAR.length;
var iDelim2 = orderMonth + MONTH.length;
var delim1 = datePattern.substring(iDelim1, iDelim1 + 1);
var delim2 = datePattern.substring(iDelim2, iDelim2 + 1);
if (iDelim1 == orderMonth && iDelim2 == orderDay) {
dateRegexp = new RegExp("^(\\d{4})(\\d{2})(\\d{2})$");
} else if (iDelim1 == orderMonth) {
dateRegexp = new RegExp("^(\\d{4})(\\d{2})[" + delim2 + "](\\d{2})$");
} else if (iDelim2 == orderDay) {
dateRegexp = new RegExp("^(\\d{4})[" + delim1 + "](\\d{2})(\\d{2})$");
} else {
dateRegexp = new RegExp("^(\\d{4})[" + delim1 + "](\\d{2})[" + delim2 + "](\\d{2})$");
}
var matched = dateRegexp.exec(value);
if(matched != null) {
if (!isValidDate(matched[3], matched[2], matched[1])) {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
} else {
if (i == 0) {
focusField = form[oDate[x][0]];
}
fields[i++] = oDate[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
function isValidDate(day, month, year) {
if (month < 1 || month > 12) {
return false;
}
if (day < 1 || day > 31) {
return false;
}
if ((month == 4 || month == 6 || month == 9 || month == 11) &&
(day == 31)) {
return false;
}
if (month == 2) {
var leap = (year % 4 == 0 &&
(year % 100 != 0 || year % 400 == 0));
if (day>29 || (day == 29 && !leap)) {
return false;
}
}
return true;
}]]>
</javascript>
</validator>
<!-- range is deprecated use intRange instead -->
<validator name="range"
classname="org.apache.struts.validator.FieldChecks"
method="validateIntRange"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends="integer"
msg="errors.range">
<javascript><![CDATA[
function validateRange(form) {
return validateIntRange(form);
}]]>
</javascript>
</validator>
<validator name="intRange"
classname="org.apache.struts.validator.FieldChecks"
method="validateIntRange"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends="integer"
msg="errors.range">
<javascript><![CDATA[
function validateIntRange(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oRange = new intRange();
for (x in oRange) {
if ((form[oRange[x][0]].type == 'text' ||
form[oRange[x][0]].type == 'textarea') &&
(form[oRange[x][0]].value.length > 0)) {
var iMin = parseInt(oRange[x][2]("min"));
var iMax = parseInt(oRange[x][2]("max"));
var iValue = parseInt(form[oRange[x][0]].value);
if (!(iValue >= iMin && iValue <= iMax)) {
if (i == 0) {
focusField = form[oRange[x][0]];
}
fields[i++] = oRange[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>
<validator name="floatRange"
classname="org.apache.struts.validator.FieldChecks"
method="validateFloatRange"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends="float"
msg="errors.range">
<javascript><![CDATA[
function validateFloatRange(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oRange = new floatRange();
for (x in oRange) {
if ((form[oRange[x][0]].type == 'text' ||
form[oRange[x][0]].type == 'textarea') &&
(form[oRange[x][0]].value.length > 0)) {
var fMin = parseFloat(oRange[x][2]("min"));
var fMax = parseFloat(oRange[x][2]("max"));
var fValue = parseFloat(form[oRange[x][0]].value);
if (!(fValue >= fMin && fValue <= fMax)) {
if (i == 0) {
focusField = form[oRange[x][0]];
}
fields[i++] = oRange[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}]]>
</javascript>
</validator>
<validator name="creditCard"
classname="org.apache.struts.validator.FieldChecks"
method="validateCreditCard"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.creditcard">
<javascript><![CDATA[
function validateCreditCard(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oCreditCard = new creditCard();
for (x in oCreditCard) {
if ((form[oCreditCard[x][0]].type == 'text' ||
form[oCreditCard[x][0]].type == 'textarea') &&
(form[oCreditCard[x][0]].value.length > 0)) {
if (!luhnCheck(form[oCreditCard[x][0]].value)) {
if (i == 0) {
focusField = form[oCreditCard[x][0]];
}
fields[i++] = oCreditCard[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
/**
* Reference: http://www.ling.nwu.edu/~sburke/pub/luhn_lib.pl
*/
function luhnCheck(cardNumber) {
if (isLuhnNum(cardNumber)) {
var no_digit = cardNumber.length;
var oddoeven = no_digit & 1;
var sum = 0;
for (var count = 0; count < no_digit; count++) {
var digit = parseInt(cardNumber.charAt(count));
if (!((count & 1) ^ oddoeven)) {
digit *= 2;
if (digit > 9) digit -= 9;
};
sum += digit;
};
if (sum == 0) return false;
if (sum % 10 == 0) return true;
};
return false;
}
function isLuhnNum(argvalue) {
argvalue = argvalue.toString();
if (argvalue.length == 0) {
return false;
}
for (var n = 0; n < argvalue.length; n++) {
if ((argvalue.substring(n, n+1) < "0") ||
(argvalue.substring(n,n+1) > "9")) {
return false;
}
}
return true;
}]]>
</javascript>
</validator>

<validator name="email"
classname="org.apache.struts.validator.FieldChecks"
method="validateEmail"
methodParams="java.lang.Object,
org.apache.commons.validator.ValidatorAction,
org.apache.commons.validator.Field,
org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest"
depends=""
msg="errors.email">
<javascript><![CDATA[
function validateEmail(form) {
var bValid = true;
var focusField = null;
var i = 0;
var fields = new Array();
oEmail = new email();
for (x in oEmail) {
if ((form[oEmail[x][0]].type == 'text' ||
form[oEmail[x][0]].type == 'textarea') &&
(form[oEmail[x][0]].value.length > 0)) {
if (!checkEmail(form[oEmail[x][0]].value)) {
if (i == 0) {
focusField = form[oEmail[x][0]];
}
fields[i++] = oEmail[x][1];
bValid = false;
}
}
}
if (fields.length > 0) {
focusField.focus();
alert(fields.join('\n'));
}
return bValid;
}
/**
* Reference: Sandeep V. Tamhankar (stamhankar@hotmail.com),
* http://javascript.internet.com
*/
function checkEmail(emailStr) {
if (emailStr.length == 0) {
return true;
}
var emailPat=/^(.+)@(.+)$/;
var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
var validChars="\[^\\s" + specialChars + "\]";
var quotedUser="(\"[^\"]*\")";
var ipDomainPat=/^(\d{1,3})[.](\d{1,3})[.](\d{1,3})[.](\d{1,3})$/;
var atom=validChars + '+';
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
var domainPat=new RegExp("^" + atom + "(\\." + atom + ")*$");
var matchArray=emailStr.match(emailPat);
if (matchArray == null) {
return false;
}
var user=matchArray[1];
var domain=matchArray[2];
if (user.match(userPat) == null) {
return false;
}
var IPArray = domain.match(ipDomainPat);
if (IPArray != null) {
for (var i = 1; i <= 4; i++) {
if (IPArray[i] > 255) {
return false;
}
}
return true;
}
var domainArray=domain.match(domainPat);
if (domainArray == null) {
return false;
}
var atomPat=new RegExp(atom,"g");
var domArr=domain.match(atomPat);
var len=domArr.length;
if ((domArr[domArr.length-1].length < 2) ||
(domArr[domArr.length-1].length > 3)) {
return false;
}
if (len < 2) {
return false;
}
return true;
}]]>
</javascript>
</validator>
</global>
</form-validation>

LoginFormBean.java : 

package com.test;
import org.apache.struts.validator.ValidatorForm;
public class LoginFormBean extends ValidatorForm {
/**
*
*/
private static final long serialVersionUID = 1L;
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;
}

}

index.jsp : 

<%@ taglib uri="/WEB-INF/struts-html" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean" prefix="bean" %>
<jsp:forward page="home.do"></jsp:forward>

login.jsp : 

<%@ taglib uri="/WEB-INF/struts-html" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean" prefix="bean" %>
<html:form action="login.do">
<html:errors />
<html:javascript formName="LoginForm"/>
User Name :<html:text property="username"></html:text> <br />
Password : <html:password property="password"></html:password> <br />
<html:submit value="Login"></html:submit> <html:cancel value="Cancel"></html:cancel>
</html:form>


layout.jsp :
<%@ taglib uri="/WEB-INF/struts-html" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-bean" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-logic" prefix="logic" %>
You are in Layout page

failure.jsp :
<%@ taglib uri="/WEB-INF/struts-html" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean" prefix="bean" %>
<html:html>
<head>
<title></title>
</head>
<body>
You are in Failure Page
</body>
</html:html>