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20845823
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2013-12-30T19:07:29.470
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2014-01-03T09:41:44.790
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2014-01-03T09:41:44.790
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You could use a non-field custom validator to validate any number of fields. For this purpose you should create a custom validator that extend <code>ValidatorSupport</code> and implement <code>validate</code> method which is inherited from <code>Validator</code> interface but doesn't have default implementation. You should write this implementation to do custom validation. For example you want to create a <code>RetypeValidator</code> which validates two fields have the same value. It could look like <pre><code>public class RetypeValidator extends ValidatorSupport { private String value = null; public String getValue() { return value; } public void setValue(String value) { this.value = value; } private String retypeValue = null; public String getRetypeValue() { return retypeValue; } public void setRetypeValue(String value) { retypeValue = value; } @Override public void validate(Object object) throws ValidationException { String value = (String) parse(this.value, String.class); String retypeValue = (String) parse(this.retypeValue, String.class); if (value != null && retypeValue != null && !value.equals(retypeValue)) addActionError(getDefaultMessage()); } } </code></pre> then you have to add this validator to the configuration in the <code>validators.xml</code>: <pre><code><?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator Config 1.0//EN" "http://struts.apache.org/dtds/xwork-validator-config-1.0.dtd"> <validators> <validator name="retypeValidator" class="org.custom.struts.vaidators.RetypeValidator"/> </validators> </code></pre> Now, you have a custom validator name that you could use with <code>@CustomValidator</code> annotation. <pre><code>@Validations( customValidators = @CustomValidator(type="retypeValidator", message="the value and retype value should be the same", parameters = { @ValidationParameter( name = "value", value = "${password}" ), @ValidationParameter( name = "retypeValue", value = "${conformPassword}" )}) ) </code></pre> Note, <code>password</code> and <code>conformPassword</code> are OGNL expressions used to parse when being validated. 
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