單向：
<code class="java">class Foo {
private Bar bar;
}
class Bar {
}</code>雙向（Foo 類管理）：
<code class="java">class Foo {
@OneToOne(cascade = CascadeType.ALL)
private Bar bar;
}
class Bar {
@OneToOne(mappedBy = "bar")
private Foo foo;
}</code>使用使用者管理連接表的單向：
<code class="java">class Foo {
@OneToMany
@JoinTable(name = "FOO_BAR",
joinColumns = {@JoinColumn(name = "fooId")},
inverseJoinColumns = {@JoinColumn(name = "barId")})
private List<Bar> bars;
}
class Bar {
// No corresponding mapping to Foo.class
}
@Entity
@Table(name = "FOO_BAR")
class FooBar {
private UUID fooBarId;
private Foo foo;
private Bar bar;
}</code>使用外鍵對映的雙向：
<code class="java">class Foo {
@OneToMany(mappedBy = "bar")
private List<Bar> bars;
}
class Bar {
@ManyToOne
@JoinColumn(name = "fooId")
private Foo foo;
}</code>使用Hibernate 託管連接表的雙向：
<code class="java">class Foo {
@OneToMany
@JoinTable(name = "FOO_BAR",
joinColumns = {@JoinColumn(name = "fooId")},
inverseJoinColumns = {@JoinColumn(name = "barId")})
private List<Bar> bars;
}
class Bar {
@OneToMany
@JoinTable(name = "FOO_BAR",
joinColumns = {@JoinColumn(name = "barId")},
inverseJoinColumns = {@JoinColumn(name = "fooId")})
private List<Foo> foos;
}</code>使用雙向使用者管理的聯接表：
<code class="java">class Foo {
@OneToMany(mappedBy = "bar")
private List<FooBar> bars;
}
class Bar {
@OneToMany(mappedBy = "foo")
private List<FooBar> foos;
}
@Entity
@Table(name = "FOO_BAR")
class FooBar {
private UUID fooBarId;
private Foo foo;
private Bar bar;
}</code>以上是如何使用註解定義 Hibernate 和 Spring 中的關係？的詳細內容。更多資訊請關注PHP中文網其他相關文章！
