blocks|key|2444864|text|这是默认行为。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2444865|如您所见，JpaRepository的方法被注释为@Transactional，默认情况下是传播(REQUIRED)，这是该传播类型的正常行为(参见10.5.7事务传播)。|offset|length|style|CODE|2444866|entityMap|0|LINK|mutability|MUTABLE|url|http://static.springsource.org/spring-data/data-jpa/docs/current/api/org/springframework/data/jpa/repository/JpaRepository.html|1|http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/transaction.html#tx-propagation^0|0|5|D|P|E|1D|8|5|D|0|22|A|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@$D|T|E|U|F|G]|$D|V|E|W|F|G]|$D|X|E|Y|F|G]]|9|@$D|Z|E|10|1|11]|$D|12|E|13|1|14]]|A|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]]]

It's a default behaviour. 

As you can see, methods of <a href="http://static.springsource.org/spring-data/data-jpa/docs/current/api/org/springframework/data/jpa/repository/JpaRepository.html" rel="nofollow"><code>JpaRepository</code></a> are annotated as <code>@Transactional</code> with propagation by default (<code>REQUIRED</code>), and it's a normal behaviour for that propagation type (see <a href="http://static.springsource.org/spring/docs/3.0.x/spring-framework-reference/html/transaction.html#tx-propagation" rel="nofollow">10.5.7 Transaction propagation</a>).

blocks|key|2803937|text|这一切都取决于@Transactional注释中的传播集。默认情况下，它被设置为REQUIRED，这意味着:如果没有事务上下文，则在方法的末尾创建一个并提交；否则，在现有事务上下文中包含方法调用。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2803938|还有其他一些:+REQUIRES_NEW、SUPPORTS、NEVER等等。详情请参见http://static.springsource.org/spring/docs/3.0.x/api/org/springframework/transaction/annotation/Propagation.html。|2803939|entityMap|0|LINK|mutability|MUTABLE|url|http://static.springsource.org/spring/docs/3.0.x/api/org/springframework/transaction/annotation/Propagation.html^0|14|8|0|17|34|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|S|8|@]|D|@$9|T|A|U|1|V]]|E|$]]|$1|H|3|-4|5|6|7|W|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

It all depends on the propagation set in the @Transactional annotation. By default, it's set to <code>REQUIRED</code>, which means : if no transaction context, create one and commit at the end of the method; else, include the method call inside the existing transaction context.

There are other ones : REQUIRES_NEW, SUPPORTS, NEVER, etc. See <a href="http://static.springsource.org/spring/docs/3.0.x/api/org/springframework/transaction/annotation/Propagation.html" rel="nofollow">http://static.springsource.org/spring/docs/3.0.x/api/org/springframework/transaction/annotation/Propagation.html</a> for details.

blocks|key|1248031|text|默认情况下，@Transactional在JpaRepository/the实现类中将导致这些方法只参与外部事务。因此，如果你认为“忽视”是一个误导性的词，那么可以随意为它打开一个JIRA+(我认为它在某种程度上是;)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1248032|如果希望更改CRUD方法的事务配置，只需在具体的存储库接口中重新声明CRUD方法，并向其中添加包含您希望拥有的配置的@Transactional。有关细节，请参阅参考文献。|1248033|entityMap|0|LINK|mutability|MUTABLE|url|http://static.springsource.org/spring-data/data-jpa/docs/current/reference/html/#transactions^0|6|E|L|D|0|1M|E|29|4|0|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@$9|X|A|Y|1|Z]]|E|$]]|$1|H|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

The <code>@Transactional</code> at the <code>JpaRepository</code>/the implementation class will cause these methods simply taking part in the outer transaction by default. So if you think "neglect" is a misleading word feel free to open a JIRA for it (I think it is to some degree ;) ).

If you want to change the configuration of transactions for the CRUD methods you can do so by simply redeclaring the CRUD method inside your concrete repository interface and add an <code>@Transactional</code> to it containing the config you want to have. See the <a href="http://static.springsource.org/spring-data/data-jpa/docs/current/reference/html/#transactions" rel="nofollow">reference documentation</a> for details.

From <a href="http://static.springsource.org/spring-data/data-jpa/docs/current/reference/html/#transactions" rel="nofollow noreferrer">Spring Data JPA reference</a> (previously <a href="http://hades.synyx.org" rel="nofollow noreferrer">Hades</a>),

<blockquote>
 CRUD methods on repository instances
 are transactional by default.
</blockquote>

If a method covers more than one repository, example:

<pre><code>@Transactional
public void addRoleToAllUsers(String roleName) {
 Role role = roleRepository.findByName(roleName);
 for (User user : userRepository.readAll()) {
 user.addRole(role);
 userRepository.save(user);
 }
}
</code></pre>

The reference states

<blockquote>
 The transaction configuration at the
 repositories will be neglected then as
 the outer transaction configuration
 determines the actual one used.
</blockquote>

The behavior inner transactions will be neglected is a default spring transaction behavior or actually explicitly handled by Spring Data JPA?

Spring Data Jpa / Hades Transaction Behaviour

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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来自 (以前的)，库实例上的CRUD方法在默认情况下是事务性的。如果一个方法包含多个存储库，例如：@Transactionalpublic void addRoleToAllUsers(String roleName) {    Role role = roleRepository.findByName(roleNam...

问Spring数据Jpa / Hades事务行为
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