使用srpingJPA进行分页，排序和模糊查询

使用srpingJPA进行分页，排序和模糊查询，原生SQL

分页和排序

PageRequest

PageRequest

//单纯根据页码和页码大小
public PageRequest(int page, int size) {
this(page, size, (Sort)null);
}

//直接根据Direction 和字段名进行排序
public PageRequest(int page, int size, Direction direction, String... properties) {
this(page, size, new Sort(direction, properties));
}

//根据sort对象进行排序
public PageRequest(int page, int size, Sort sort) {
super(page, size);
this.sort = sort;
}

//单纯根据页码和页码大小
Pageable pageable = new PageRequest(page,pageSize);

//直接根据Direction 和字段名进行排序
Pageable pageable=new PageRequest(page, pageSize,Sort.Direction.DESC,"createDate");

//根据sort对象进行排序
Sort sort = new Sort(Sort.Direction.DESC,"createDate");
Pageable pageable = new PageRequest(page,pageSize,sort);

TestReposity.findAll(pageable);

模糊查询

Repository

JpaSpecificationExecutor<T>

public interface TestRepository extends JpaRepository<Student, Integer>,JpaSpecificationExecutor<Student>{

JpaSpecificationExecutor<T>

Page<T> findAll(Specification<T> var1, Pageable var2);

Page<Student> pageWebSite=StudentRepository.findAll(new Specification<Student>() {

@Override
public Predicate toPredicate(Root<Student> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
Predicate predicate=cb.conjunction();
if(student!=null){
if(StringUtil.isNotEmpty(student.getName())){
predicate.getExpressions().add(cb.like(root.get("name"), "%"+student.getName().trim()+"%"));
}
if(student.getAge()!=null && student.getAge()>1){
predicate.getExpressions().add(cb.equal(root.get("age"), student.getAge()));
}
}
return predicate;
}
}, pageable);
return pageWebSite.getContent();
}

原生SQL

@Query(value="SELECT * FROM student WHERE score<?1 ORDER BY id DESC LIMIT 1",nativeQuery=true)
public Student getScoreLowerStudent(Integer score);