Question

一切正常，直到我需要按“ About.position”属性将“ About”实体排序。我在spring存储库界面中添加了一个方法，但此后不起作用。

关于实体

struct myFindInfo
{
    DWORD processID;
    bool found;
};

static BOOL CALLBACK findVisibleWindowProc(HWND hwnd, LPARAM lParam)
{
    myFindInfo *fi = reinterpret_cast<myFindInfo*>(lParam);
    DWORD pid;
    GetWindowThreadProcessId(hwnd, &pid);
    if ((pid == fi->processID) && IsWindowVisible(hwnd))
    {
        fi->found = true;
        return FALSE;
    }
    return TRUE;
}

bool isApplicationProcess(DWORD processID)
{
    findInfo fi;
    fi.processID = processID;
    fi.found = false;
    EnumWindows(&findVisibleWindowProc, reinterpret_cast<LPARAM>(&fi));
    return fi.found;
}

回购接口

package coffee;

import javax.persistence.*;
import lombok.*;
import javax.validation.constraints.*;

@Data
@NoArgsConstructor(access=AccessLevel.PUBLIC, force=true)
@Entity
public class About {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Long id;
    @OrderBy
    private Integer position;
    @NotEmpty
    private String name;
    @NotEmpty
    private String description;
    @Lob
    private String image;
}

错误源代码

package coffee.data;

import java.util.List;

import org.springframework.data.repository.CrudRepository;

import coffee.*;

public interface AboutRepository extends CrudRepository<About, Long> {
    List<About> getAboutByPosition ();
}

当方法findAboutsByPosition（）被忽略时，一切都很好

Answer 1

getAboutByOrderByPosition（）错误的语法，解决了！

使用自定义方法的Spring Data JPA自动存储库

1 个答案: