nutz与Validation, 基于jsr303

ValidationProcessor.java

package org.nutz.integration.jsr303;

import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Valid;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;

import org.nutz.mvc.ActionContext;
import org.nutz.mvc.impl.processor.AbstractProcessor;

public class ValidationProcessor extends AbstractProcessor {
	
	protected ValidatorFactory factory;
	
	protected Validator validator;
	
	public ValidationProcessor() {
		init();
	}
	
	public void init() {
		factory = Validation.buildDefaultValidatorFactory();
		validator = factory.getValidator();
	}
	
	public void process(ActionContext ac) throws Throwable {
		Object[] args = ac.getMethodArgs();
		if (args == null || args.length == 0) {
			doNext(ac);
			return;
		}
		for (Object obj : args) {
			if (obj == null)
				continue;
			if (obj.getClass().getAnnotation(Valid.class) == null)
				continue;
			Set<ConstraintViolation<Object>> rest = validator.validate(obj);
			ac.getRequest().setAttribute("violations", rest);
			break;
		}
		doNext(ac);
	}

}