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POSpring MVC custom validators
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  1. POSpring MVC custom validators
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    copied!<p>I am validating my spring form for that I wrote my own validator. In that I was unable to show my error codes.</p> <p>I have a model/pojo class.</p> <pre><code>public class Person{ private String dob; @InHouse private Contact contact; //getters and setters } </code></pre> <p>So here "Contact" is another class and it has 3 variables.</p> <pre><code>public class Contact{ private String mobile1; private String mobile2; private String mobile3; //getters and setters } </code></pre> <p>All my hibernate connections are fine.</p> <p>Below is my custom validator.</p> <pre><code> @Override public void validate(Object argTarget, Errors argErrors) { Person person = (Person) argTarget; validate(argTarget.getClass(), argErrors, person); List&lt;Field&gt; inHouseAnnotationFields = AnnotationProcessor .getAnnotatedFields(argTarget.getClass(), InHouse.class); if (Precondition.checkNotEmpty(inHouseAnnotationFields)) { for (Field field : inHouseAnnotationFields) { System.out.println(field.getName()); Object obj = getValue(person, field.getName()); validate(field.getType(), argErrors, obj); } } } @SuppressWarnings("unchecked") protected void validate(Class&lt;?&gt; argClass, Errors argErrors, Object argObject) { List&lt;Field&gt; calidationFieldsList = AnnotationProcessor .getAnnotatedFields(argClass, Validation.class); if (Precondition.checkNotEmpty(calidationFieldsList)) { for (Field field : calidationFieldsList) { try { field.setAccessible(true); Object result; result = field.get(argObject); Object instance = getValidatorInstance(argClass, field); if (Precondition.checkNotNull(instance) &amp;&amp; Precondition.checkNotNull(result)) { com.rise.validation.Validation&lt;String, String&gt; validation = (com.rise.validation.Validation&lt;String, String&gt;) instance; boolean valid = validation.validate(result.toString()); if (!valid) { argErrors.rejectValue(field.getName(), field.getName() + " Validation Failed"); } } } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } } } } </code></pre> <p>In the above code "InHouse" is my custom annotation. Contact(Person Class) variable has this annotation.</p> <p>In my input I gave a wrong phone number for <strong>mobile3</strong> field.</p> <p>I am validating each and every field here.Here I am using Reflections. I will add all my error messages based on my variable("Valid"). So when I use "argErrors.rejectValue(arg1,arg2)" I am getting an exception like.</p> <p><strong>org.springframework.beans.NotReadablePropertyException: Invalid property 'mobile3' of bean class [com.rise.common.model.Person]: Bean property 'mobile3' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?</strong></p> <p>Here my mobile3 is in my "Contact" class. I don't know why I am getting this exception while adding all my error messages to <strong>argErrors</strong> object.</p> <p>Can any one help me on this.</p> <p><strong>Note:</strong> Here I am using reflection to iterate over the fields. For example First I will iterate over <strong>Person</strong> fields (dob) then I will get the <strong>Contact</strong> object from <strong>Person</strong> then I will iterate over <strong>Contact</strong> fields.</p> <p>I was stuck here. Please help me on this and also is it the right way to write <strong>Custom Validators</strong>.</p> <p>Thanq, Amar.</p>
 

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