xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd "> hibernate.dialect=org.hibernate.dialect.MySQL5Dialect hibernate.hbm2ddl.auto=update hibernate.show_sql=true hibernate.format_sql=false hibernate.cache.use_second_level_cache=true hibernate.cache.use_query_cache=false hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider person.cfg.xml
2. dao层代码
package com.xunchang;import java.util.List;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.Transaction;public class PersonDaoImpl implements PersonDao{ private SessionFactory sessionFactory; public Session getSession() { return sessionFactory.getCurrentSession(); } public SessionFactory getSessionFactory() { return sessionFactory; } public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } @Override public Person get(Integer id) { return (Person) this.getSession().get(Person.class, id); } @Override public void save(Person ps) { this.getSession().save(ps); } @Override public List findAllPerson() { /* * 问题： home402 is not mapped [from home402]; * 最后发现了问题所在，hql查询时使用的from Xxx，Xxx不是实体类的名称，而是 EntityName （Hibernate注解）。 如： @Entity @Table(name="QING_AO_CENTER_INFO") public class QingAoCenterInfo { ...... } 此处， @Entity后并没有显示的指明EntityName，因此默认采用实体类的名称。 @Entity(name="QING_AO_CENTER_INFO") @Table(name="QING_AO_CENTER_INFO") public class QingAoCenterInfo { ...... } 可以发现，显示地指明了 EntityName，因此在使用hql查询的时候，要from QING_AO_CENTER_INFO，而不是from QingAoCenterInfo ； centerList = manager.find("from QING_AO_CENTER_INFO center where center.type = ? and center.centerName = ?", new Object[]{type,centerName}); */ Session session = this.getSession();// Transaction tran = session.beginTransaction(); session.save(new Person(null, "我是hjzgg", 23)); List list = session.createQuery("from Person").list();// tran.commit(); return list; }} package com.hjzgg.service;import java.util.List;import com.xunchang.Person;import com.xunchang.PersonDao;public class XunChageService { private PersonDao personDao; public Person get(Integer id){ return personDao.get(id); } public void save(Person ps){ personDao.save(ps); } public List findAllPerson(){ return personDao.findAllPerson(); } public PersonDao getPersonDao() { return personDao; } public void setPersonDao(PersonDao personDao) { this.personDao = personDao; }} package com.xunchang;import java.util.List;import com.hjzgg.service.XunChageService;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;public class LoginAction extends ActionSupport { private XunChageService service; @Override public String execute() throws Exception{ List list_person = service.findAllPerson(); ActionContext.getContext().getSession().put("person", list_person); return "success"; } public XunChageService getService() { return service; } public void setService(XunChageService service) { this.service = service; } } package com.xunchang;import java.io.Serializable;/* *待解决问题，为什么一定要实现 Serializeable*/public class Person implements Serializable{ private Integer personId; private String person_name; private Integer person_age; public Person(){ } public Person(Integer personId, String person_name, Integer person_age) { super(); this.personId = personId; this.person_name = person_name; this.person_age = person_age; } public Integer getPersonId() { return personId; } public void setPersonId(Integer personId) { this.personId = personId; } public String getPerson_name() { return person_name; } public void setPerson_name(String person_name) { this.person_name = person_name; } public Integer getPerson_age() { return person_age; } public void setPerson_age(Integer person_age) { this.person_age = person_age; }}