jpa之PagingAndSortingRepository带分页查询

package com.morris.dao.inter;

import org.springframework.data.repository.PagingAndSortingRepository;

import com.morris.entity.Person;

public interface PersonDao extends PagingAndSortingRepository<Person, Integer>{

}

public PageRequest(int page, int size)
{
this(page, size, null);
}

package com.morris.service.inter;
import org.springframework.data.domain.Pageable;
import com.morris.entity.Person;

public interface IPersonService {
void save(Person person);

void delete(Person person);

void delete(Integer id);

void update(Person person);

Person findById(Integer id);

Iterable<Person> findAll();

Iterable<Person> findAll(Pageable pageable);
}

package com.morris.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;

import com.morris.dao.inter.PersonDao;
import com.morris.entity.Person;
import com.morris.service.inter.IPersonService;

@Service("personService")
public class PersonServiceImpl implements IPersonService {

@Autowired
private PersonDao personDao;

public void save(Person person) {

personDao.save(person);
}

public void delete(Person person) {
personDao.delete(person);

}

public void delete(Integer id) {
personDao.delete(id);
}

public void update(Person person) {
personDao.save(person);
}public Person findById(Integer id) {

Person person = personDao.findOne(id);
return person;
}

public Iterable<Person> findAll() {

Iterable<Person> persons = personDao.findAll();
return persons;
}

public Iterable<Person> findAll(Pageable pageable) {
Page<Person> persons = personDao.findAll(pageable);
return persons;
}

}