1.1.? Dao接口繼承PagingAndSortingRepository接口

PersonDao.java

package com.morris.dao.inter;import org.springframework.data.repository.PagingAndSortingRepository;import com.morris.entity.Person;public interface PersonDao extends PagingAndSortingRepository<Person, Integer>{} ?

1.2.? 使用PagingAndSortingRepository接口的方法

1.2.1.??新增

public void save(Person person) {personDao.save(person);}

1.2.2.??刪除

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

1.2.3.??修改

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

1.2.4.??查詢

public Person findById(Integer id) {Person person = personDao.findOne(id);return person;}public Iterable<Person> findAll() {Iterable<Person> persons = personDao.findAll();return persons;}

1.2.5.??分頁查詢

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

其中Pageable是一個接口,具體的實現類為PageRequest,下面為PageRequest的一個構造方法

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

只需要指定分頁時頁數和每頁的大小即可.

1.3.? 源代碼

IPersonService

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); } ?

PersonServiceImpl.java

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 {@Autowiredprivate 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;}}

總結

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