我正在尝试使用 Spring 3.1 和 Hibernate 4 设置我的项目。我一直在关注一些在线教程。我收到一个奇怪的错误，根据 spring 论坛应该已经用 Spring 3.1 修复了。 春季错误追踪器
当我的服务调用getCurrentSession()时，它会引发以下异常：
org.hibernate.HibernateException: **No Session found for current thread**] with root cause org.hibernate.HibernateException: No Session found for current thread
at org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessionContext.java:97) at
org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:881)
****编辑：根据 Spring Spring 3.1 Documentation for Transactions更新了我的 spring-dao.xml 。我尝试用 org.apache.commons.dbcp.BasicDataSource 替换我的数据源。我的配置中是否缺少任何可能导致此问题的属性？****
这是我的 spring-dao.xml：
<!-- Enable annotation style of managing transactions -->
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<value>hibernate.dialect=org.hibernate.dialect.MySQLInnoDBDialect</value>
</property>
</bean>
<!-- Declare a datasource that has pooling capabilities-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close"
p:driverClass="${app.jdbc.driverClassName}"
p:jdbcUrl="${app.jdbc.url}"
p:user="${app.jdbc.username}"
p:password="${app.jdbc.password}"
p:acquireIncrement="5"
p:idleConnectionTestPeriod="60"
p:maxPoolSize="100"
p:maxStatements="50"
p:minPoolSize="10" />
<!-- Declare a transaction manager-->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"
p:sessionFactory-ref="sessionFactory" />
我的用户 bean (User.java)
package com.foo.lystra.beans;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="users")
public class User implements Serializable {
private static final long serialVersionUID = -5527566191402296042L;
@Id
@Column(name = "idusers")
private Integer user_id;
@Column(name="login_name")
private String loginName;
@Column(name="password")
private String password;
@Column(name="role")
private String role;
@Column(name="congregation_id")
private Integer congregation_id;
public Integer getUser_id() {
return user_id;
}
public void setUser_id(Integer user_id) {
this.user_id = user_id;
}
public String getLoginName() {
return loginName;
}
public void setLoginName(String loginName) {
this.loginName = loginName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public Integer getCongregation_id() {
return congregation_id;
}
public void setCongregation_id(Integer congregation_id) {
this.congregation_id = congregation_id;
}
public String toString() {
return "user_name: " + this.loginName + " congregation_id: " + this.congregation_id.toString();
}
}
最后我的服务...
package com.foo.lystra.services;
import java.util.List;
import javax.annotation.Resource;
import org.apache.commons.logging.LogFactory;
import org.apache.commons.logging.Log;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.foo.lystra.beans.User;
import com.foo.lystra.beans.Congregation;
@Service("congregationUserService")
@Transactional
public class CongregationUserService {
protected static Log logger = LogFactory.getLog(CongregationUserService.class);
@Resource(name="sessionFactory")
private SessionFactory sessionFactory;
public List<User> getAllUsers() {
logger.debug("getting all users");
//Exception is thrown on this next line:
Session session = sessionFactory.getCurrentSession();
Query query = session.createQuery("FROM users");
return query.list();
}
}
我意识到我的数据源可能没有被使用。如果我忘记包含任何配置，我可以更新这篇文章。此外，如果需要 Tomcat 启动日志，我也可以提供它们。