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Hibernate Spring集成，表正在创建，但SessionFactory不是自动装配的(Hibernate Spring Integration, Tables Are Being Created, But SessionFactory is not Autowired)
Hibernate Spring集成，表正在创建，但SessionFactory不是自动装配的(Hibernate Spring Integration, Tables Are Being Created, But SessionFactory is not Autowired)
我已经集成了Spring和Hibernate，当我使用jetty插件为maven运行我的应用程序时，Hibernate创建表但我的sessionFactory对象为null，
web.xml中
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> </welcome-file-list> <!-- The definition of the Root Spring Container shared by all Servlets and Filters --> <context-param> <param-name>contextConfigLocation</param-name> <param-value></param-value> </context-param> <!-- Creates the Spring Container shared by all Servlets and Filters --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Processes application requests --> <servlet> <servlet-name>appServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring/appServlet/servlet-context.xml, /WEB-INF/spring/security-context.xml </param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>appServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>servlet的context.xml中
<?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure --> <!-- Enables the Spring MVC @Controller programming model --> <annotation-driven /> <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory --> <resources mapping="/resources/**" location="/resources/" /> <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory --> <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <beans:property name="prefix" value="/WEB-INF/views/" /> <beans:property name="suffix" value=".jsp" /> </beans:bean> <context:component-scan base-package="com.fyp.ptma" /> <beans:bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" p:location="/WEB-INF/jdbc.properties" /> <beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}" /> <beans:bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <beans:property name="dataSource" ref="dataSource"></beans:property> <beans:qualifier value="sessionFactory"></beans:qualifier> <beans:property name="annotatedClasses"> <beans:list> <beans:value>com.fyp.ptma.model.Application</beans:value> <beans:value>com.fyp.ptma.model.ApplicationVersion</beans:value> <beans:value>com.fyp.ptma.model.Defect</beans:value> <beans:value>com.fyp.ptma.model.DefectDetail</beans:value> <beans:value>com.fyp.ptma.model.Group</beans:value> <beans:value>com.fyp.ptma.model.Downloader</beans:value> <beans:value>com.fyp.ptma.model.Notification</beans:value> <beans:value>com.fyp.ptma.model.RegisterStatus</beans:value> <beans:value>com.fyp.ptma.model.User</beans:value> <beans:value>com.fyp.ptma.model.Invitation</beans:value> <beans:value>com.fyp.ptma.model.Installation</beans:value> </beans:list> </beans:property> <beans:property name="hibernateProperties"> <beans:props> <beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect </beans:prop> <beans:prop key="hibernate.show_sql">true</beans:prop> <beans:prop key="hibernate.hbm2ddl.auto">create</beans:prop> </beans:props> </beans:property> </beans:bean> <beans:bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <beans:property name="sessionFactory" ref="sessionFactory" /> </beans:bean>UserDao.java
@Repository public class UserDao implements IUserDao { @Autowired @Qualifier(value="sessionFactory") private SessionFactory sessionFactory; public Session openSession() { return sessionFactory.getCurrentSession(); } public Long save(Object objToSave) throws PersistenceException, ConstraintViolationException { Session session = null; try { session = this.openSession(); session.beginTransaction(); session.save(objToSave); session.getTransaction().commit(); } catch (Exception e) { e.printStackTrace(); session.getTransaction().rollback(); } finally { // session.close(); } return null; } public Long update(Object objToUpdate) throws PersistenceException { // TODO Auto-generated method stub return null; } public boolean delete(Object objToDelete) throws PersistenceException, ConstraintViolationException { // TODO Auto-generated method stub return false; } public List<Application> getAllApplications(User user) throws HibernateException { // TODO Auto-generated method stub return null; } public Application getApplication(User user) throws HibernateException { // TODO Auto-generated method stub return null; } public boolean authenticateLogin(User user) throws AuthenticationException, HibernateException { Session session = this.openSession(); session.beginTransaction(); Criteria criteria = session.createCriteria(User.class); criteria.add(Restrictions.eq("email", user.getEmail())); User userDB = (User) criteria.uniqueResult(); return userDB.getPassword().equals(user.getPassword()); } public User getUserByEmail(String email) throws HibernateException { Session session = this.openSession(); session.beginTransaction(); Criteria criteria = session.createCriteria(User.class); criteria.add(Restrictions.eq("email", email)); User userDB = (User) criteria.uniqueResult(); // session.close(); return userDB; } }我的控制器
@ResponseBody @RequestMapping(value = "/processRegistration.html", method = RequestMethod.POST) public String processRegistration(@ModelAttribute("user") User user, Model model, BindingResult result) { UserDao uDao = DaoFactory.getUserDao(); uDao.save(user); return "ok"; }当我在我的控制器中调用uDao.save时，UserDao的sessionFactory对象为null，但在初始化期间，当我尝试使用下面的线控制器时，我没有得到任何接线错误，
ApplicationContext context = new AnnotationConfigApplicationContext（“com.fyp.ptma.dao”）;
它在提交表格时抛出异常：
: No matching bean of type [org.hibernate.SessionFactory] 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)}I have integrated Spring and Hibernate, when i run my application using jetty plugin for maven, Hibernate creates tables but i my sessionFactory object is null,
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> </welcome-file-list> <!-- The definition of the Root Spring Container shared by all Servlets and Filters --> <context-param> <param-name>contextConfigLocation</param-name> <param-value></param-value> </context-param> <!-- Creates the Spring Container shared by all Servlets and Filters --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Processes application requests --> <servlet> <servlet-name>appServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/spring/appServlet/servlet-context.xml, /WEB-INF/spring/security-context.xml </param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>appServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>servlet-context.xml
<?xml version="1.0" encoding="UTF-8"?> <beans:beans xmlns="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:beans="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure --> <!-- Enables the Spring MVC @Controller programming model --> <annotation-driven /> <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory --> <resources mapping="/resources/**" location="/resources/" /> <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory --> <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <beans:property name="prefix" value="/WEB-INF/views/" /> <beans:property name="suffix" value=".jsp" /> </beans:bean> <context:component-scan base-package="com.fyp.ptma" /> <beans:bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" p:location="/WEB-INF/jdbc.properties" /> <beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" p:driverClassName="${jdbc.driverClassName}" p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}" /> <beans:bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <beans:property name="dataSource" ref="dataSource"></beans:property> <beans:qualifier value="sessionFactory"></beans:qualifier> <beans:property name="annotatedClasses"> <beans:list> <beans:value>com.fyp.ptma.model.Application</beans:value> <beans:value>com.fyp.ptma.model.ApplicationVersion</beans:value> <beans:value>com.fyp.ptma.model.Defect</beans:value> <beans:value>com.fyp.ptma.model.DefectDetail</beans:value> <beans:value>com.fyp.ptma.model.Group</beans:value> <beans:value>com.fyp.ptma.model.Downloader</beans:value> <beans:value>com.fyp.ptma.model.Notification</beans:value> <beans:value>com.fyp.ptma.model.RegisterStatus</beans:value> <beans:value>com.fyp.ptma.model.User</beans:value> <beans:value>com.fyp.ptma.model.Invitation</beans:value> <beans:value>com.fyp.ptma.model.Installation</beans:value> </beans:list> </beans:property> <beans:property name="hibernateProperties"> <beans:props> <beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect </beans:prop> <beans:prop key="hibernate.show_sql">true</beans:prop> <beans:prop key="hibernate.hbm2ddl.auto">create</beans:prop> </beans:props> </beans:property> </beans:bean> <beans:bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <beans:property name="sessionFactory" ref="sessionFactory" /> </beans:bean>UserDao.java
@Repository public class UserDao implements IUserDao { @Autowired @Qualifier(value="sessionFactory") private SessionFactory sessionFactory; public Session openSession() { return sessionFactory.getCurrentSession(); } public Long save(Object objToSave) throws PersistenceException, ConstraintViolationException { Session session = null; try { session = this.openSession(); session.beginTransaction(); session.save(objToSave); session.getTransaction().commit(); } catch (Exception e) { e.printStackTrace(); session.getTransaction().rollback(); } finally { // session.close(); } return null; } public Long update(Object objToUpdate) throws PersistenceException { // TODO Auto-generated method stub return null; } public boolean delete(Object objToDelete) throws PersistenceException, ConstraintViolationException { // TODO Auto-generated method stub return false; } public List<Application> getAllApplications(User user) throws HibernateException { // TODO Auto-generated method stub return null; } public Application getApplication(User user) throws HibernateException { // TODO Auto-generated method stub return null; } public boolean authenticateLogin(User user) throws AuthenticationException, HibernateException { Session session = this.openSession(); session.beginTransaction(); Criteria criteria = session.createCriteria(User.class); criteria.add(Restrictions.eq("email", user.getEmail())); User userDB = (User) criteria.uniqueResult(); return userDB.getPassword().equals(user.getPassword()); } public User getUserByEmail(String email) throws HibernateException { Session session = this.openSession(); session.beginTransaction(); Criteria criteria = session.createCriteria(User.class); criteria.add(Restrictions.eq("email", email)); User userDB = (User) criteria.uniqueResult(); // session.close(); return userDB; } }My Controller
@ResponseBody @RequestMapping(value = "/processRegistration.html", method = RequestMethod.POST) public String processRegistration(@ModelAttribute("user") User user, Model model, BindingResult result) { UserDao uDao = DaoFactory.getUserDao(); uDao.save(user); return "ok"; }when i call uDao.save in my controller , sessionFactory object of UserDao is null, but during initialisation i dont get any wiring error when i try my controller with below line,
ApplicationContext context = new AnnotationConfigApplicationContext("com.fyp.ptma.dao");
it throw exception while submitting form:
: No matching bean of type [org.hibernate.SessionFactory] 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)}
原文：https://stackoverflow.com/questions/16861113
更新时间：2023-06-22 11:06
最满意答案
什么是例外，它是一个“空集”异常还是类似的东西？
尝试
FirstOrDefault()代替
First()看看会发生什么。 如果没有可用的记录，First（）将抛出异常。 如果没有可用的记录，FirstOrDefault（）将为您提供空的User对象。
It turns out the issue was with SQLite's handing of GUID types. If you set
BinaryGuids=Truethen they are saved as 16 byte binaries and cannot be 'matched' against string based guids. You can also set that to be false and they match as strings, but you need to watch the case for the alpha chars.
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