代码

// 查询操作 // 分页条件 PageRequest pageable = new PageRequest(pageIndex, pageSize); Specification<ArticleEntity> speTest = new Specification<ArticleEntity>() { @Override public Predicate toPredicate(Root<ArticleEntity> root, CriteriaQuery<?> query, CriteriaBuilder cb) { // 重点说明：get中的参数为实体类中对应的变量名，get前可以定义泛型 query.where(cb.equal(root.get("columnEntity").<Integer>get("id"), ColumnEntity.getId())); query.orderBy(cb.desc(root.get("id").as(Integer.class))); return query.getRestriction(); } }; Page<ArticleEntity> page = articleDao.findAll(speTest, pageable); List<ArticleEntity> articleEntityList = page.getContent();