如何在Spring JPQL中忽略空参数？

Question

我有一个这样创建的API。当您提供两个参数时它都可以工作，但是我希望当任何一个参数为null时它都能工作。有办法吗？

@Query("Select u from User u where u.agency = :agency and " +
            "(u.firstName like %:firstName%)")
    public List<User> multiParam(Agency agency, String firstName);

Answer 1

尝试此

@Query("Select u from User u where (:agency is null or u.agency = :agency) and " +
        "(:firstName is null or u.firstName like %:firstName%)")
public List<User> multiParam(Agency agency, String firstName);

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