我真的是 Spring 的新手，当我在登录后参考以下页面 JSP 安全性时，我遇到了“没有找到当前线程的会话”这个问题。到目前为止，一切正常。
这是该页面的控制器：
package employee.controller;
import employee.service.AdminService;
import employee.service.UserService;
import org.apache.log4j.Logger;
import org.springframework.security.access.annotation.Secured;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.annotation.Resource;
/**
* @author serge
*
* Handles and retrieves the common or admin page depending on the URI template.
* A user must be log-in first he can access these pages. Only the admin can see
* the adminpage, however.
*/
@Controller
@RequestMapping("/main")
public class MainController {
protected static Logger logger = Logger.getLogger("controller");
@Resource(name = "adminService")
private AdminService adminService;
@Resource(name = "userService")
private UserService userService;
/**
* Handles and retrieves a /WEB-INF/jsp/employee-page.jsp
*
* containing all employee
*
* @return the name of the JSP page
*/
@Secured("ROLE_USER")
@RequestMapping(value = "/employee-list",method = RequestMethod.GET)
public String getEmployeeListPage(Model model) {
logger.debug("Received request to show all employee page");
// Retrieve all employee and attach to model
model.addAttribute("all-employee", userService.findAllEmployee());
return "employee-page";
}
/**
* Handles and retrieves /WEB-INF/jsp/admin-page.jsp that only admins can see
*
* @return the name of the JSP page
*/
@Secured("ROLE_ADMIN")
@RequestMapping(value = "/admin", method = RequestMethod.GET)
public String getAdminPage() {
logger.debug("Received request to show admin page");
return "admin-page";
}
}
这是从控制器调用的用户服务：
package employee.service.impl;
import employee.DAO.EmployeeInfoDAO;
import employee.model.EmployeeInfo;
import employee.service.UserService;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.annotation.Secured;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
/**
* @author serge
*
* Reader level
*
* Service to Retrieve info about Employees
*/
@Service("userService")
@Transactional
public class UserServiceImpl implements UserService {
protected static Logger logger = Logger.getLogger("service");
private EmployeeInfoDAO emplInfoDAO;
@Autowired
public void setEmployeeDao(EmployeeInfoDAO emplInfoDAO) {
this.emplInfoDAO = emplInfoDAO;
}
/**
* Retrieving Employee Information by id
*
* @return EmployeeInfo object
*/
@Override
@Transactional
@Secured("ROLE_USER")
public EmployeeInfo findEmployeeByID(Integer id) {
logger.debug("Retrieving Employee with id= " + id);
EmployeeInfo employeeInfo = new EmployeeInfo();
employeeInfo.setId(id);
emplInfoDAO.find(employeeInfo);
return employeeInfo;
}
/**
* Retrieving all Employees
*
* @return List of EmployeeInfo object
*/
@Override
@Secured("ROLE_USER")
@Transactional(readOnly = true)
public List<EmployeeInfo> findAllEmployee() {
logger.debug("Retrieving all Employee");
return emplInfoDAO.findAll();
}
/**
* Retrieving Employees by last name
*
* @return List of EmployeeInfo object
*/
@Override
@Secured("ROLE_USER")
@Transactional(readOnly = true)
public List<EmployeeInfo> findAllByLastName(String lastName, Object paramValue) {
lastName = "lastName";
logger.debug("Retrieving Employee by last name: " + paramValue);
return emplInfoDAO.findAllByParam(lastName, paramValue);
}
/**
* Retrieving Employees by first name
*
* @return List of EmployeeInfo object
*/
@Override
@Secured("ROLE_USER")
@Transactional(readOnly = true)
public List<EmployeeInfo> findAllByFirstName(String firstName, Object paramValue) {
firstName = "firstName";
logger.debug("Retrieving Employee by first name: " + paramValue);
return emplInfoDAO.findAllByParam(firstName, paramValue);
}
}
这是自定义 DAO 支持，不确定这是否是正确的方法......：
package employee.DAO.impl;
import employee.DAO.DAO;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import javax.annotation.Resource;
import java.io.Serializable;
import java.util.List;
public class CustomHibernateDaoSupport<T> implements DAO<T> {
//was extending HibernateDaoSupport
private Class<T> clazz;
private SessionFactory sessionFactory;
public CustomHibernateDaoSupport(Class<T> clazz) {
this.clazz = clazz;
}
@Autowired
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
private Session getCurrentSession() {
return sessionFactory.getCurrentSession();
}
@Override
@Transactional
public void save(T entity) {
getCurrentSession().save(entity);
}
@Override
@Transactional
public void update(T entity) {
getCurrentSession().update(entity);
}
@Override
@Transactional
public void delete(Serializable key) {
Object entity = getCurrentSession().get(clazz, key);
if (entity != null) {
getCurrentSession().delete(entity);
}
}
@Override
@Transactional
public T find(Serializable key) {
return (T) getCurrentSession().get(clazz, key);
}
@Override
@Transactional
public List<T> findAll() {
return getCurrentSession().createCriteria(clazz).list();
}
@Override
@Transactional
public List<T> findAllByParam(final String paramName, final Object paramValue) {
return getCurrentSession().createCriteria(clazz)
.add(Restrictions.eq(paramName, paramValue))
.list();
}
}
当然还有配置：
<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<!-- Activates annotations -->
<context:annotation-config />
<mvc:annotation-driven/>
<!-- Scans for annotated components in base-package-->
<context:component-scan base-package="employee" />
<bean class="employee.service.impl.AdminServiceImpl"/>
<bean class="employee.service.impl.UserServiceImpl"/>
<!-- Shared Hibernate SessionFactory in a Spring application context. -->
<bean id = "transactionManager" class = "org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name = "sessionFactory" ref = "sessionFactory" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="annotatedClasses">
<list>
<value>employee.model.UserInfo</value>
<value>employee.model.EmployeeInfo</value>
<value>employee.model.EmployeeDiv</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
</bean>
<!-- for database, imports the properties from database.properties -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:database.properties"/>
</bean>
</beans>
成功登录后，我调用了 /employee-list 并得到了这个而不是页面：
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.hibernate.HibernateException: No Session found for current thread
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
...
org.hibernate.HibernateException: No Session found for current thread
org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:97)
org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:941)
employee.DAO.impl.CustomHibernateDaoSupport.getCurrentSession(CustomHibernateDaoSupport.java:31)
employee.DAO.impl.CustomHibernateDaoSupport.findAll(CustomHibernateDaoSupport.java:64)
...
请帮助我理解我的错误在哪里，也许我的配置错误？