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当我使用休眠来保存实体时，我发现会话无法将其保存在事务中。我必须刷新和清除session.but但我没有这样做之前在其他项目中，是否有任何错误的交易配置在我的XML文件？任何答案赞赏︰）休眠不能保存数据
hibernate.cfg.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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<context:property-placeholder location="classpath:application.properties"/>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${driverClassName}"></property>
<property name="url" value="${url}"></property>
<property name="username" value="${db.userName}"></property>
<property name="password" value="${db.password}"></property>
</bean>
<bean id="sessionFactory" name="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.format_sql">true</prop>
<!--<prop key="current_session_context_class">thread</prop>-->
</props>
</property>
<property name="packagesToScan" value="com.gtis"/>
</bean>
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<!--<bean id="transactionProxy"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
abstract="true">
<property name="transactionManager" ref="transactionManager"></property>
<property name="transactionAttributes">
<props>
<prop key="save*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="modify*">PROPAGATION_REQUIRED,-myException</prop>
<prop key="del*">PROPAGATION_REQUIRED</prop>
<prop key="*">PROPAGATION_REQUIRED</prop>
</props>
</property>
</bean>-->
<!--<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="del*" propagation="REQUIRED" />
<tx:method name="import*" propagation="REQUIRED" />
<tx:method name="*" propagation="NOT_SUPPORTED" read-only="true" />
</tx:attributes>
</tx:advice>
<aop:config>
<aop:pointcut id="serviceOperation" expression="execution(* com.gtis.service.*Service.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation" />
</aop:config>-->
</beans>
道
package com.gtis.dao;
import com.gtis.model.Student;
import org.apache.commons.lang3.StringUtils;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Repository;
import javax.annotation.Resource;
import java.util.List;
/**
* Created by u on 2016/3/15.
*/
@Repository
public class StudentDao {
@Resource
private SessionFactory sessionFactory;
private Session getSession(){
return sessionFactory.getCurrentSession();
}
public Student query(String id) throws Exception{
if(StringUtils.isBlank(id)){
return (Student)getSession().get(Student.class,id);
}else{
throw new Exception("id is required");
}
}
public List<Student> queryAll(){
String hql = "from com.gtis.model.Student";
Query query = getSession().createQuery(hql);
return query.list();
}
public void save(Student student)throws Exception{
if(student!=null){
System.out.println("sessionFactory="+sessionFactory);
System.out.println("session="+getSession());
// Session session = getSession();
getSession().save(student);
// session.flush();
// session.clear();
// session.close();
}else{
throw new Exception("object is required");
}
}
public void delete(Student student)throws Exception{
if(student!=null){
getSession().delete(student);
}else{
throw new Exception("object is required");
}
}
}
服务
package com.gtis.service;
import com.gtis.dao.StudentDao;
import com.gtis.model.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
/**
* Created by u on 2016/3/15.
*/
@Service
public class StudentService {
@Autowired
StudentDao studentDao;
public Student getStudent(String id) throws Exception {
return studentDao.query(id);
}
public List<Student> getAll() throws Exception{
return studentDao.queryAll();
}
@Transactional
public void save(Student student)throws Exception{
studentDao.save(student);
}
@Transactional
public void delete(Student student) throws Exception{
studentDao.delete(student);
}
}
> Controller
package com.gtis.controller;
import com.gtis.model.Student;
import com.gtis.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* Created by u on 2016/3/15.
*/
@Controller
public class StudentController {
@Autowired
StudentService studentService;
@RequestMapping("get")
public String get(){
Student student = new Student();
student.setName("avc");
try {
studentService.save(student);
} catch (Exception e) {
e.printStackTrace();
}
return "somwhere";
}
}
您的日志中没有错误？ – pleft
没有错误，但控制台没有打印插入sql而没有刷新会话，当我刷新并清除会话时，它确实打印了。 – Aezio
试试这个：@Transactional（readOnly = false，propagation = Propagation.REQUIRES_NEW）。你有一个读写事务，所以你应该使readOnly = false。 – Waqar