基本spring 3 hibernate 4 mvc web应用程序，但有许多例外
基本spring 3 hibernate 4 mvc web应用程序，但有许多例外,spring,hibernate,exception,spring-mvc,jpa,Spring,Hibernate,Exception,Spring Mvc,Jpa,状态：已解决。没有关系。发现了问题。entityManager不应该在dao中自动连接。谢谢你的努力 我用Spring3.2.3和Hibernate4.x.x创建了一个简单的web项目。NetBeans7.3中的maven。 我得到了下面的代码在最后声明的异常 有没有人有过类似的问题，或者知道为什么会发生这种情况 控制器 /* * To change this template, choose Tools | Templates * and open the template in the
状态：已解决/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package web.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import web.entity.Users;
import web.service.UserService;
/**
*
* @author syncsys
*/
@Controller
public class UserController {
@Autowired
private UserService userService;
// @RequestMapping(value = "/create", method = RequestMethod.GET )
@RequestMapping(value = "/create" )
public String creatUser(ModelMap model){
Users user = new Users();
user.setEmail("myemail@mydomain.com");
user.setName("myname");
userService.saveOrUpdate(user); //////// this is line 29
System.out.println("created--------------------");
return "create";
}
package web.dao.impl.jpa;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import org.hibernate.Session;
import org.springframework.stereotype.Repository;
import web.dao.UserDAO;
import web.entity.Users;
/**
*
* @version $Revision$
* @since 1.0
*/
@Repository
public class UserDAOImpl implements UserDAO {
/**
* The JPA entity manager
*/
@Autowired
private EntityManager entityManager;
/**
* Set the entity manager
*
* @param entityManager
*/
@PersistenceContext
public void setEntityManager(EntityManager entityManager) {
this.entityManager = entityManager;
}
/**
* Helper method to return the hibernate session from the JPA
* entity manager implementation.
*
* @return the hibernate {#link Session}
*/
protected Session getHibernateSession() {
return entityManager.unwrap(Session.class);
}
/**
* Saves or Updates an existing user entity instance.
*
* @param user the user entity
* @return the managed user entity instance
*/
public void saveOrUpdate(Users user) {
if(user.getId() == 0) {
entityManager.persist(user);
}
else
entityManager.merge(user);
}
package web.service;
/**
*
* @author syncsys
*/
import web.dao.UserDAO;
import web.entity.Users;
@Service
@Transactional(readOnly = true)
public class UserServiceImpl implements UserService{
@Autowired
private UserDAO userDAO;
@Transactional(readOnly = false)
public void saveOrUpdate(Users user){
userDAO.saveOrUpdate(user);
}
}
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"
>
<context:component-scan base-package="web" >
<context:include-filter type="annotation" expression="org.springframework.stereotype.Service" />
<context:include-filter type="annotation" expression="org.springframework.stereotype.Repository" />
</context:component-scan>
<mvc:annotation-driven />
<!-- <context:annotation-config />-->
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<!--
Most controllers will use the ControllerClassNameHandlerMapping above, but
for the index controller we are using ParameterizableViewController, so we must
define an explicit mapping for it.
-->
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="index.htm">indexController</prop>
</props>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<!--
The index controller.
-->
<bean name="indexController"
class="org.springframework.web.servlet.mvc.ParameterizableViewController">
<property name="viewName" value="index" />
</bean>
<!---
##########################################################################
Hibernate
-->
<!-- <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="${jdbc.url}jdbc:postgresql://localhost:5432/postgres" />
<property name="username" value="postgres" />
<property name="password" value="abc" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="packagesToScan" value="web.entity" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</prop>
</props>
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
###########################################################
-->
<!--
JPA based instead of hibernate
-->
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>
<!--
This configures the EntityManagerFactory object used for JPA/Spring managed persistent objects.
-->
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceXmlLocation" value="classpath*:META-INF/persistence.xml" />
<property name="persistenceUnitName" value="persistence-unit-demo" />
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="web.entity" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="POSTGRESQL" />
<!-- giving errors <property name="databasePlatorm" value="org.hibernate.dialect.PostgreSQLDialect"/>-->
<!-- <property name="database" value="HSQL" />-->
<property name="showSql" value="true" />
<property name="generateDdl" value="true" />
</bean>
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">create-drop</prop>
</props>
</property>
</bean>
<bean id="jpaDialect" class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
<!-- Pulls database connection from the tomcat container's context database pool via JNDI -->
<!-- <jee:jndi-lookup id="dataSource" jndi-name="jdbc/mssqlserver" resource-ref="true"/>-->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource" >
<property name="driverClassName" value="org.postgresql.Driver" />
<property name="url" value="jdbc:postgresql://localhost:5432/postgres" />
<property name="username" value="postgres" />
<property name="password" value="abc" />
</bean>
<!--
Sets up our transaction manager.
-->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
<property name="jpaDialect" ref="jpaDialect" />
<property name="dataSource" ref="dataSource" />
<!-- giving errors <property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
</property>-->
</bean>
<!--
Defines our transaction manager for Transactional annotations.
-->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="sessionFactory" factory-bean="entityManagerFactory" factory-method="getSessionFactory" />
</beans>
似乎您没有将UserService注入控制器
@Autowired
private UserService userService;
entityManager不应该在dao中被@Autowired。感谢您的努力。@Service public class UserServiceImpl实现UserService{nevermind。发现问题。entityManager不应该在dao中自动连接。感谢您的努力
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private web.service.UserService web.controller.UserController.userService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private web.dao.UserDAO web.service.UserServiceImpl.userDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.persistence.EntityManager web.dao.impl.jpa.UserDAOImpl.entityManager; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private web.service.UserService web.controller.UserController.userService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private web.dao.UserDAO web.service.UserServiceImpl.userDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.persistence.EntityManager web.dao.impl.jpa.UserDAOImpl.entityManager; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private web.dao.UserDAO web.service.UserServiceImpl.userDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.persistence.EntityManager web.dao.impl.jpa.UserDAOImpl.entityManager; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private web.dao.UserDAO web.service.UserServiceImpl.userDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.persistence.EntityManager web.dao.impl.jpa.UserDAOImpl.entityManager; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDAOImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.persistence.EntityManager web.dao.impl.jpa.UserDAOImpl.entityManager; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.persistence.EntityManager web.dao.impl.jpa.UserDAOImpl.entityManager; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.persistence.EntityManager] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
@Autowired
private UserService userService;