springmvc4+hibernate4+spring4注解一对多级联保存

package com.h3c.zgc.user.entity;

import java.util.HashSet;
import java.util.Set;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
import org.hibernate.annotations.GenericGenerator;

@Entity
@Table(name="t_person",catalog="itac")
public class Person {
    @Id
    @GenericGenerator(name="generator",strategy="increment")
    @GeneratedValue(generator="generator")
    @Column(name="person_id",unique=true,nullable=false)
    private Integer personId;
    @Column(name="person_name")
    private String personName;
    
    @OneToMany(targetEntity=House.class)
    @JoinColumn(name="person_id",updatable =false)
    @Cascade(CascadeType.SAVE_UPDATE)
    private Set<House> houses = new HashSet<House>();
    
    public Set<House> getHouses() {
        return houses;
    }
    public void setHouses(Set<House> houses) {
        this.houses = houses;
    }
    public Integer getPersonId() {
        return personId;
    }
    public void setPersonId(Integer personId) {
        this.personId = personId;
    }
    public String getPersonName() {
        return personName;
    }
    public void setPersonName(String personName) {
        this.personName = personName;
    }
    @Override
    public String toString() {
        return "Person [personId=" + personId + ", personName=" + personName
                + ", houses=" + houses + "]";
    }
    
}

package com.h3c.zgc.user.entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;

import org.hibernate.annotations.Cascade;
import org.hibernate.annotations.CascadeType;
import org.hibernate.annotations.GenericGenerator;


@Entity
@Table(name="t_house",catalog="itac")
public class House {
    @Id
    @GeneratedValue(generator="generator")
    @GenericGenerator(name="generator",strategy="increment")
    @Column(name="house_id",unique=true,nullable=false)
    private Integer houserId;
    @Column(name="house_address")
    private String houseAddress;
    
    @ManyToOne(targetEntity=Person.class)
    @JoinColumn(name="person_id",updatable=false)
    @Cascade(CascadeType.SAVE_UPDATE)
    private Person person;
    
    public Person getPerson() {
        return person;
    }
    public void setPerson(Person person) {
        this.person = person;
    }
    public Integer getHouserId() {
        return houserId;
    }
    public void setHouserId(Integer houserId) {
        this.houserId = houserId;
    }
    public String getHouseAddress() {
        return houseAddress;
    }
    public void setHouseAddress(String houseAddress) {
        this.houseAddress = houseAddress;
    }
    @Override
    public String toString() {
        return "House [houserId=" + houserId + ", houseAddress=" + houseAddress
                + "]";
    }  
}

package com.h3c.zgc.user.dao;

import java.util.HashSet;
import java.util.Set;

import javax.annotation.Resource;

import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate4.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository;

import com.h3c.zgc.user.entity.House;
import com.h3c.zgc.user.entity.Person;

@Repository
public class PersonDao extends HibernateDaoSupport{
    @Resource
    private void set(SessionFactory sessionFactory){
        this.setSessionFactory(sessionFactory);
    }
    public void savePerson(){
        Person p = new Person();
        p.setPersonName("person01");
        this.getHibernateTemplate().save(p);
    }
    public void savePersonAndHouse(){
        Person p = new Person();
        p.setPersonName("person01");
        
        House h = new House();
        h.setHouseAddress("beijing");
        
        Set<House> hs = new HashSet<House>();
        hs.add(h);
        
        //建立关系
        p.setHouses(hs);
        h.setPerson(p);
        this.getHibernateTemplate().save(p);
        System.out.println(p);
    }
}

package com.h3c.zgc.user.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.h3c.zgc.user.dao.PersonDao;
@Service
public class PersonService {
    @Resource
    private PersonDao personDao;
    @Transactional
    public void savePerson() {
        this.personDao.savePerson();
    }
    @Transactional
    public void savePersonAndHouse() {
        this.personDao.savePersonAndHouse();
    }
}

package com.h3c.zgc.user.controller;

import java.io.IOException;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.h3c.zgc.user.service.PersonService;
@Controller
public class PersonController {
    @Resource
    private PersonService personService;
    @RequestMapping("savePerson")
    public String savePerson(HttpServletRequest request){
        this.personService.savePerson();
        request.setAttribute("flag", "success");
        return "h4/flag";
    }
    @RequestMapping("savePersonHouse")
    public String savePersonHouse(HttpServletRequest request){
        this.personService.savePersonAndHouse();
        request.setAttribute("flag", "success");
        return "h4/flag";
    }
    
    
    
    @RequestMapping("test0")
    public void test(HttpServletResponse response) throws IOException{
        String strs = "[{ title: ‘中国好声音‘},{ title: ‘中国饮料‘},{ title: ‘中国好舞蹈‘}]";
        response.getWriter().write(strs);
    }
}