医院科研管理系统

// User.java

@Entity

public class User {

@Id

@GeneratedValue(strategy = GenerationType.IDENTITY)

private Long id;

private String username;

private String password;

private String role;

// Getters and Setters

}

// Project.java

@Entity

public class Project {

@Id

@GeneratedValue(strategy = GenerationType.IDENTITY)

private Long id;

private String name;

private Date startDate;

private Date endDate;

@OneToMany(mappedBy = "project")

private List results;

// Getters and Setters

}

// Result.java

@Entity

public class Result {

@Id

@GeneratedValue(strategy = GenerationType.IDENTITY)

private Long id;

private String title;

private String description;

@ManyToOne

@JoinColumn(name = "project_id")

private Project project;

// Getters and Setters

}