使用投影仪从spring数据中获得的不明确成分

Question

有人能帮我吗？我对spring数据很模糊，所以我有地址实体

@Entity
public class Address {
    @Id
    private Long id;
    private String state;
    private String city;
    private String street;
    private String zipCode;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getState() {
        return state;
    }

    public void setState(String state) {
        this.state = state;
    }

    public String getCity() {
        return city;
    }

    public void setCity(String city) {
        this.city = city;
    }

    public String getStreet() {
        return street;
    }

    public void setStreet(String street) {
        this.street = street;
    }

    public String getZipCode() {
        return zipCode;
    }

    public void setZipCode(String zipCode) {
        this.zipCode = zipCode;
    }
}

投影仪接口

public interface AddressView {
    String getZipCode();
}

以及存储库

@Repository
public interface AddressRepository extends org.springframework.data.repository.Repository<Address, Long> {
    List<AddressView> getAddressByState(String state);
    List<AddressView> findAll();

测验

List<AddressView> addressViewList = addressRepository.getAddressByState("test");
        List<AddressView> addressViewList2 = addressRepository.findAll();

第一个请求getaddressByState工作正常，并返回地址，但第二个findall我有那个问题没有发现转换器能够从类型转换.........

这正常吗？谢谢你！

Answer 1

您将地址定义为地址存储库中的预期响应

通过调用getaddressByState（）和findAll（），您将获得地址，而不是地址视图，考虑使用DTO