关联链接的查询方法

Question

我有两个实体 User 和 Expense。

费用

@Entity
@Table(name="Expenses")
public class Expense {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    private String name;    
    private BigDecimal amount;
    private Date date;

    @ManyToOne
    @JoinColumn(name="category_id")
    private Category category;  

    @ManyToOne
    @JoinColumn(name="mode_id")
    private Mode mode;

    @ManyToOne
    @JoinColumn(name="user_id")
    private User user;
    // Getter setter and constructor
}

用户

@Entity
@Table(name="Users")
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private int id;
    private String username;
    private String password;
    private String email;
    private boolean enabled;
    private String firstName;
    private String lastName;
    private String phoneNumber;
    private String country;

    @OneToMany(mappedBy = "user", fetch = FetchType.EAGER, cascade = CascadeType.REMOVE, orphanRemoval = true)
    private Set<Expense> expense;
    @OneToMany(mappedBy = "user", fetch = FetchType.EAGER, cascade = CascadeType.REMOVE, orphanRemoval = true)
    private Set<Mode> mode;
    @OneToMany(mappedBy = "user", fetch = FetchType.EAGER, cascade = CascadeType.REMOVE, orphanRemoval = true)
    private Set<Category> category;
    // Getter setter and constructor
}

费用库

public interface ExpenseRepository extends CrudRepository<Expense, Integer> {
    List<Expense> findByDateBetween(@DateTimeFormat(pattern = "dd-MM-yyyy")@Param("startDate") Date startDate, @DateTimeFormat(pattern = "dd-MM-yyyy") @Param("endDate")Date endDate);
}

用户存储库

public interface UserRepository extends CrudRepository<User, Integer>{
    Optional<User> findByUsername(String username);
}

注意：我正在使用 Spring 数据休息。

我可以访问用户 1 的费用清单：http://localhost:8080/api/users/1/expense

我还可以通过以下方式获取日期范围内的费用清单：http://localhost:8080/api/expenses/search/findByDateBetween?startDate=01-02-2018&endDate=28-02-2018

我想要实现的是通过为用户使用 'findByDateBetween' 方法来访问费用列表。

这个 Url 不工作并抛出 404 错误。

http://localhost:8080/api/users/1/expense/search/findByDateBetween?startDate=01-02-2018&endDate=28-02-2018

{
    "timestamp": 1517645444489,
    "status": 404,
    "error": "Not Found",
    "message": "No message available",
    "path": "/api/users/1/expense/search/findByDateBetween"
}

我做错了什么或者有更好的方法吗？

Answer 1

日期是支出中的一个字段，而不是用户中的一个字段。像这样创建另一个方法

public interface ExpenseRepository extends CrudRepository<Expense, Integer> {
    List<Expense> findByUser_IdAndDateBetween(Integer id, @DateTimeFormat(pattern = "dd-MM-yyyy")@Param("startDate") Date startDate, @DateTimeFormat(pattern = "dd-MM-yyyy") @Param("endDate")Date endDate);
}

并使用

调用它

http://localhost:8080/api/expenses/search/findByDateBetween?id=1&startDate=01-02-2018&endDate=28-02-2018

关联链接的查询方法

Query method on association links

spring

spring-data-rest

spring-hateoas