小编Ste*_*hen的帖子

我实际上是hibernate的新手,并尝试设置2个类.帐户和人.现在,我尝试做的是使用注释创建一对一的双向依赖.以下是一些详细信息和代码段:

这是我添加到构建路径的库,也许我错过了任何东西:

http://prntscr.com/1jbew4

帐户:

package backend;

import java.util.Random;
import java.util.Collection;
import java.util.TreeSet;
import javax.persistence.*;

@Entity
@Table(name = "Account")
public class Account {

    public static Random rnd = new Random();
    private int id;
    private String username;
    private long password;
    private long salt;
    private Person person;
    private String role;
    private Collection<Account> friendlist;

    public Account() {

    }

    public Account(String username, long password, Person person, String role) {
        super();
        this.username = username;
        this.password = password;
        this.setSalt();
        this.person = person;
        this.role = role;
        this.friendlist = …