目录解析JPA仓库repository的findAll()方法源码YsCuUBpzgetQuery(spec,pageable)方法作用1.其中getDomainClass()作用2.执行getQuery方法执行查询语句,返回结果集(不做详细分析)jpaRepository的findOne正确写法和findAll 解析JPA仓库repository的findAll()方法 源码 PagefindAll(@Nullable Specificationspec, Pageable pageable)...
JPA-JpaRepository方法命名语法说明 和对应执行的SQL 表名字占位符 #{#entityName} http://news.558idc.com/148964.html 目录 前言 JPA的语法分为如下5种: 1、count相关,返回值为int 或 long 2、exists相关,返
@GetMapping("/user/{id}") public User getUser(@PathVariable("id") Integer id) { User user = new User(); user.setId(id); Example<User> example = Example.of(user); Optional<User> one = userRepository.findOne(example); return one.get(); } @GetMapping("/user/all") public List<User...
repository.save(user); }@OverridepublicList<User>findAll() {returnrepository.findAll(); }@OverridepublicLongfindByUsername(Stringusername) {returnrepository.findByUsername(username); }@OverridepublicUserfindById(Long id) {returnrepository.findById(id).orElse(null); }@OverridepublicbooleancheckIfUsername...
@RestController@RequestMapping("/city")publicclassCityController{@AutowiredprivateCityRepository cityRepository;@RequestMapping(method = RequestMethod.GET, value = "/all")publicList<City>getAllCityList(){returncityRepository.findAll(); } } What am I doing wrong here? The reference documentation :Spring...
在SpringDataJPA中使用repository来进行数据层操作(作用相当于dao层),直接使用repository对象调用已经实现好的数据层操作方法进行CRUD、分页、排序等操作,还可以在自定义repository接口中依据一定规则扩展功能。在一个项目中,我们平常需要为每一个实体类都创建一个repository接口,我们自定义的repository接口都需要去继承JpaRepo...
publicinterfacePtActivityRepositoryextendsJpaRepository<PtActivity,Long>,JpaSpecificationExecutor<PtActivity>{} 继承了JpaSpecificationExecutor后,它拥有了这样一个方法: 代码语言:javascript 复制 Page<T>findAll(@Nullable Specification<T>var1,Pageable var2); ...
public class PagingAndSortingRepositoryTest { @Autowired private UserDao3 userDao3; /** * 分页 */ @Test public void test1(){ int page = 0 ; int size = 2 ; Pageable pageRequest = new PageRequest(page,size); Page<Users> all = this.userDao3.findAll(pageRequest); ...
JpaRepository<UserEntity, Long> { // 根据一个固定字段查询 List<UserEntity> findAllByDep...
()*/@OverrideList<T>findAll();/** (non-Javadoc)* @see org.springframework.data.repository.PagingAndSortingRepository#findAll(org.springframework.data.domain.Sort)*/@OverrideList<T>findAll(Sortsort);/** (non-Javadoc)* @see org.springframework.data.repository.CrudRepository#findAll(java.lang....