Hibernate异常Caused by: org.hibernate.MappingException: Could not determine type for: java.util.Set

一：异常截图

二：我的实体

@Entity
@Table(name = "p_user")
public class User extends AbstractEntity {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private long id;
	//账号
	@Column(name = "account", nullable = true)
	private String account;

	//组织
	private Set<Organization> organizations = new HashSet<Organization>(0);

	@ManyToMany(fetch = FetchType.EAGER)
	@JoinTable(name = "rel_user_organization", schema = "", joinColumns = { @JoinColumn(name = "user_id", nullable = false, updatable = false) }, inverseJoinColumns = { @JoinColumn(name = "organization_id", nullable = false, updatable = false) })
	public Set<Organization> getOrganizations() {
		return organizations;
	}

	public void setOrganizations(Set<Organization> organizations) {
		this.organizations = organizations;
	}

	//角色
	@ManyToMany(fetch = FetchType.EAGER)
	@JoinTable(name = "rel_user_role", schema = "", joinColumns = { @JoinColumn(name = "user_id", nullable = false, updatable = false) }, inverseJoinColumns = { @JoinColumn(name = "role_id", nullable = false, updatable = false) })
	private Set<Role> roles = new HashSet<Role>(0);

	public Set<Role> getRoles() {
		return this.roles;
	}

	public void setRoles(Set<Role> roles) {
		this.roles = roles;
	}
	

三：错误原因

<span style="color:#ff0000;">@ManyToMany等注解。要么加载属性上，要么加在属性的Get方法上，不能混合使用！</span>