解决SSH框架整合中的 Error applying BeanValidation relational constraints错误-优快云博客

本文解决了一个常见的SSH框架整合问题，即在启动过程中出现的404错误和BeanCreationException异常，通过调整配置文件中的javax.persistence.validation.mode属性为none来禁用验证约束。

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在SSH框架整合的过程中，常常会出现这个错误，导致404错误

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: Error applying BeanValidation relational constraints
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at com.abc.test.Test.main(Test.java:21)
Caused by: org.hibernate.HibernateException: Error applying BeanValidation relational constraints
	at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.applyRelationalConstraints(BeanValidationIntegrator.java:219)
	at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.integrate(BeanValidationIntegrator.java:126)
	at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:306)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1744)
	at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1782)
	at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:189)
	at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:350)
	at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:335)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1514)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1452)
	... 12 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.hibernate.cfg.beanvalidation.BeanValidationIntegrator.applyRelationalConstraints(BeanValidationIntegrator.java:208)
	... 21 more
Caused by: org.hibernate.HibernateException: Unable to build the default ValidatorFactory
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:524)
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.applyDDL(TypeSafeActivator.java:119)
	... 26 more
Caused by: javax.validation.ValidationException: Unable to create a Configuration, because no Bean Validation provider could be found. Add a provider like Hibernate Validator (RI) to your classpath.
	at javax.validation.Validation$GenericBootstrapImpl.configure(Validation.java:271)
	at javax.validation.Validation.buildDefaultValidatorFactory(Validation.java:110)
	at org.hibernate.cfg.beanvalidation.TypeSafeActivator.getValidatorFactory(TypeSafeActivator.java:521)
	... 27 more

在使用Spring和Hibernate进行结合的时候出现了这个问题！

在配置文件中添加这个！

<property name="hibernateProperties">
   <props>
    <prop key="hibernate.show_sql">true</prop>
    <prop key="hibernate.format_sql">true</prop>
    <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
    <prop key="javax.persistence.validation.mode">none</prop>
   </props>
  </property>

其实这个问题是我们自己造成的！为什么这么说？因为我们在配置Spring和Hibernate进行结合的时候版本出现了问题。
<persistence ...>
  <persistence-unit ...>
    ...
    <properties>
      <property name="javax.persistence.validation.mode"
                value="callback, ddl"/>
    </properties>
  </persistence-unit>
</persistence>
这是hibernate官方文档的一段话！

意思就是在hibernate.cfg.xml或者是
persistence.xml文件下面需要配置
 javax.persistence.validation.mode属性!

特别的！在Hibernate中默认的 <prop key="javax.persistence.validation.mode">none</prop>

是auto而不是none!

我的配置文件，applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd" xmlns:tx="http://www.springframework.org/schema/tx">
 
 <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations"  value="classpath:jdbc.properties">
        </property>
    </bean> 

	<bean id="dataSource"
		class="org.apache.commons.dbcp.BasicDataSource">
		<property name="url" value="${jdbc.url}"></property>
		<property name="username" value="${jdbc.username}"></property>
		<property name="password" value="${jdbc.password}"></property>
		<property name="driverClassName" value="${jdbc.driverClassName}"></property>

		<property name="maxActive"> <value>100</value></property>
  		<property name="maxIdle"> <value>30</value> </property>
  		<property name="maxWait"> <value>10000</value> </property>
	</bean>
	
	<bean id="sessionFactory"
		class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
		<property name="dataSource">
			<ref bean="dataSource" />
		</property>
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">
					org.hibernate.dialect.MySQLDialect
				</prop>
				<prop key="hibernate.show_sql">true</prop>
				<prop key="hibernate.format">true</prop>
				<prop key="hbm2ddl.auto">create</prop>
				<prop key="javax.persistence.validation.mode">none</prop> 
			</props>
		</property>
		<property name="mappingResources">
			<list>
				<value>com/cn/entity/Department.hbm.xml</value>
				<value>com/cn/entity/Employee.hbm.xml</value></list>
		</property></bean>
	<bean id="transactionManager"
		class="org.springframework.orm.hibernate4.HibernateTransactionManager">
		<property name="sessionFactory" ref="sessionFactory" />
	</bean>
	<!-- 配置action -->
	<bean id="employeeAction" class="com.cn.action.EmployeeAction" scope="prototype" >
	<property name="employeeService" ref="employeeService"></property>
	<property name="departmentService" ref="departmentService"></property>
	</bean>
	
	<bean id="departmentAction" class="com.cn.action.DepartmentAction" scope="prototype">
	<property name="departmentService" ref="departmentService"></property>
	</bean>

		<!-- 配置service -->
	<bean id="employeeService" class="com.cn.service.EmployeeServiceImpl" scope="prototype">
		<property name="employeeDao" ref="employeeDao"></property>
	</bean>
	
	<bean id="departmentService" class="com.cn.service.DepartmentServiceImpl" scope="prototype">
		<property name="departmentDao" ref="departmentDao"></property>
	</bean>
	
	<!-- 配置dao -->
	<bean id="employeeDao" class="com.cn.dao.EmployeeDaoImpl" scope="prototype">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
	<bean id="departmentDao" class="com.cn.dao.DepartmentDaoImpl" scope="prototype">
		<property name="sessionFactory" ref="sessionFactory"></property>
	</bean>
	
	<tx:annotation-driven transaction-manager="transactionManager" /></beans>

测试成功！