在MYSQL和condition中使用Java谓词

我有以下基于

java谓词的代码，它从我的
MYSQL
DB获取一个结果列表：

Root<Person> from = query.from(Person.class);
CriteriaQuery<Person> selectQuery = query.select(from);
List<Person> searchResults = new ArrayList<>();

Predicate jobPredicate = createPersonJobPredicate();
Predicate agePredicate = createPersonAgePredicate(); //currently not used

selectQuery = selectQuery.where(jobPredicate);
searchResults =entityManager.createQuery(selectQuery).setFirstResult(searchRequest.getIndex()).setMaxResults(searchRequest.getSize()).getResultList();

我如何才能做到这一点？
尝试以下方法：

CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<Person> criteriaQuery = criteriaBuilder.createQuery(Person.class);
Root<Person> personRoot = criteriaQuery.from(Person.class);

Predicate jobPredicate = criteriaBuilder.equal(personRoot.get("job"), "doctor");
Predicate agePredicate = criteriaBuilder.greaterThan(personRoot.get("age"), 45);

Predicate combinedPredicate = criteriaBuilder.and(jobPredicate, agePredicate);
criteriaQuery.where(combinedPredicate);
List<Person> searchResults = 
   entityManager.createQuery(criteriaQuery).getResultList();

CriteriaBuilder-CriteriaBuilder=entityManager.getCriteriaBuilder（）；
CriteriaQuery CriteriaQuery=criteriaBuilder.createQuery（Person.class）；
Root personRoot=criteriaQuery.from（Person.class）；
谓词jobPredicate=criteriaBuilder.equal（personRoot.get（“作业”），“医生”）；
谓词agePredicate=criteriaBuilder.greaterThan（personRoot.get（“年龄”），45）；
谓词组合谓词=criteriaBuilder.and（jobPredicate，agePredicate）；
criteriaQuery.where（组合谓词）；
列表搜索结果=
entityManager.createQuery（criteriaQuery）.getResultList（）；

CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();
CriteriaQuery<Person> criteriaQuery = criteriaBuilder.createQuery(Person.class);
Root<Person> personRoot = criteriaQuery.from(Person.class);

Predicate jobPredicate = criteriaBuilder.equal(personRoot.get("job"), "doctor");
Predicate agePredicate = criteriaBuilder.greaterThan(personRoot.get("age"), 45);

Predicate combinedPredicate = criteriaBuilder.and(jobPredicate, agePredicate);
criteriaQuery.where(combinedPredicate);
List<Person> searchResults = 
   entityManager.createQuery(criteriaQuery).getResultList();