spring mvc 后台验证JSR-303 Validator
Spring mvc 注解采用JSR-303 Validator 进行验证，

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<bean class="org.springframework.http.converter.StringHttpMessageConverter">
					<property name="supportedMediaTypes">
						<list>
							<value>text/plain;charset=UTF-8</value>
						</list>
					</property>
				</bean>
			</list>
		</property>
		<!-- 验证框架配置 -->
		<property name="webBindingInitializer">
			<bean class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer">
				<property name="validator" ref="validator" />
			</bean>
		</property>
	</bean>

jar包一定要用  hibernate-validator-4.0.0.Beta2.jar ，之前大意，用了hibernate-validator.jar ， 程序一启动就报错。

2013-8-5 13:45:55 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter#0' defined in file [D:\apache-tomcat-6.0.37\webapps\erp.myeclipse.bak\WEB-INF\classes\spring\applicationContext-servlet.xml]: Cannot create inner bean 'org.springframework.web.bind.support.ConfigurableWebBindingInitializer#38df00' of type [org.springframework.web.bind.support.ConfigurableWebBindingInitializer] while setting bean property 'webBindingInitializer'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.bind.support.ConfigurableWebBindingInitializer#38df00' defined in file [D:\apache-tomcat-6.0.37\webapps\erp.myeclipse.bak\WEB-INF\classes\spring\applicationContext-servlet.xml]: Cannot resolve reference to bean 'validator' while setting bean property 'validator'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'validator' defined in file [D:\apache-tomcat-6.0.37\webapps\erp\WEB-INF\classes\spring\applicationContext-servlet.xml]: Invocation of init method failed; nested exception is javax.validation.ValidationException: Unable to find a default provider
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:281)
	at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:120)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1325)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1086)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:517)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitializ