Question

我正在尝试为ldap连接创建两个bean。

在我的context.xml文件中，我创建了两个LdapContextSource，然后使用相同的父类自动连接两个bean，派生类似于spring ldap示例中的PersonDao和PersonDaoImpl。

我不断得到的问题是两个bean都以相同的上下文源结束。甚至在我使用@AutoWired @Qualifier之后。

调试显示两个单例bean都看到不同的LdapContextSource，但最后两个bean都有相同的上下文。

是否有某个示例演示了如何通过context.xml和@autowired方法连接两个ldap连接？

我可以通过在每个类实例中以编程方式分配ldapcontextsource来实现此目的，但我正在尝试通过@AutoWired执行此操作。

编辑：

为了更清楚，我粘贴了https://today.java.net/pub/a/today/2006/04/18/ldaptemplate-java-ldap-made-simple.html的一些代码示例定义与ldap的连接的bean可以定义如下：

<beans>
   <context:annotation-config/>
   <context:component-scan base-package="the proper location of my code"/>
   <bean id="contextSource" class="net.sf.ldaptemplate.support.LdapContextSource">
      <property name="url" value="ldap://localhost:389" />
      <property name="base" value="dc=jayway,dc=se" />
      <property name="userName" value="cn=Manager" />
      <property name="password" value="secret" />
  </bean>

   <bean id="ldapTemplate" class="net.sf.ldaptemplate.LdapTemplate">
      <constructor-arg ref="contextSource" />
   </bean>

<bean id="personDao" class="se.jayway.dao.PersonDaoImpl">
    <property name="ldapTemplate" ref="ldapTemplate" />
</bean>

   <bean id="contextSource2" class="net.sf.ldaptemplate.support.LdapContextSource">
      <property name="url" value="ldap://localhost:1389" />
      <property name="base" value="dc=jayway,dc=se" />
      <property name="userName" value="cn=Manager" />
      <property name="password" value="secret" />
  </bean>

   <bean id="ldapTemplate2" class="net.sf.ldaptemplate.LdapTemplate">
      <constructor-arg ref="contextSource2" />
   </bean>

<bean id="personDao2" class="se.jayway.dao.PersonDaoImpl">
    <property name="ldapTemplate" ref="ldapTemplate2" />
</bean>

</beans>

然后将java类定义为：

public class PersonDaoImpl implements PersonDao {
   private LdapTemplate ldapTemplate;

   public void setLdapTemplate(LdapTemplate ldapTemplate) {
      this.ldapTemplate = ldapTemplate;
   }
}

请注意，我定义了两个连接。一个用于端口389的ldap，另一个用于端口1389.然后我使用PersonDaoImpl两次。

这就是问题所在。

PersonDao2在389获得与PersonDao相同的连接，而不是它想要获得的1389.

导致这种情况的原因是什么？

编辑2：

这是日志文件的一部分，我认为我们可以看到问题

DEBUG - Creating shared instance of singleton bean 'personDao'
DEBUG - Creating instance of bean 'personDao'
DEBUG - Eagerly caching bean 'personDao' to allow for resolving potential circular references
DEBUG - Creating shared instance of singleton bean 'ldapTemplate'
DEBUG - Creating instance of bean 'ldapTemplate'
DEBUG - Creating shared instance of singleton bean 'contextSource'
DEBUG - Creating instance of bean 'contextSource'
DEBUG - Eagerly caching bean 'contextSource' to allow for resolving potential circular references
DEBUG - Invoking afterPropertiesSet() on bean with name 'contextSource'
DEBUG - AuthenticationSource not set - using default implementation
DEBUG - Not using LDAP pooling
DEBUG - Trying provider Urls: ldap://xxx.xx.xx.158:389/dc=domain,dc=com
DEBUG - Returning cached instance of singleton bean 'org.springframework.security.methodSecurityMetadataSourceAdvisor'
DEBUG - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
DEBUG - Finished creating instance of bean 'contextSource'
DEBUG - Eagerly caching bean 'ldapTemplate' to allow for resolving potential circular references
DEBUG - Returning cached instance of singleton bean 'contextSource'
DEBUG - Added autowiring by name from bean name 'ldapTemplate' via property 'contextSource' to bean named 'contextSource'
DEBUG - Invoking afterPropertiesSet() on bean with name 'ldapTemplate'
DEBUG - Returning cached instance of singleton bean 'org.springframework.security.methodSecurityMetadataSourceAdvisor'
DEBUG - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
DEBUG - Finished creating instance of bean 'ldapTemplate'
DEBUG - Got Ldap context on server 'ldap://xxx.xx.xx.158:389/dc=domain,dc=com'
DEBUG - Entered setLdapTemplate getContextSource() getReadOnlyContext() dc=domain,dc=com
DEBUG - Entered setLdaptreepathminusroot ou=people
DEBUG - Returning cached instance of singleton bean 'org.springframework.security.methodSecurityMetadataSourceAdvisor'
DEBUG - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
DEBUG - Finished creating instance of bean 'personDao'
DEBUG - Creating shared instance of singleton bean 'PersonDao2'
DEBUG - Creating instance of bean 'PersonDao2'
DEBUG - Eagerly caching bean 'PersonDao2' to allow for resolving potential circular references
DEBUG - Creating shared instance of singleton bean 'ldapTemplate2'
DEBUG - Creating instance of bean 'ldapTemplate2'
DEBUG - Creating shared instance of singleton bean 'contextSource2'
DEBUG - Creating instance of bean 'contextSource2'
DEBUG - Eagerly caching bean 'contextSource2' to allow for resolving potential circular references
DEBUG - Invoking afterPropertiesSet() on bean with name 'contextSource2'
DEBUG - AuthenticationSource not set - using default implementation
DEBUG - Not using LDAP pooling
DEBUG - Trying provider Urls: ldap://xxx.xx.xx.147:389/dc=directory,dc=domain2,dc=com
DEBUG - Returning cached instance of singleton bean 'org.springframework.security.methodSecurityMetadataSourceAdvisor'
DEBUG - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
DEBUG - Finished creating instance of bean 'contextSource2'
DEBUG - Eagerly caching bean 'ldapTemplate2' to allow for resolving potential circular references
DEBUG - Returning cached instance of singleton bean 'contextSource'
DEBUG - Added autowiring by name from bean name 'ldapTemplate2' via property 'contextSource' to bean named 'contextSource'
DEBUG - Invoking afterPropertiesSet() on bean with name 'ldapTemplate2'
DEBUG - Returning cached instance of singleton bean 'org.springframework.security.methodSecurityMetadataSourceAdvisor'
DEBUG - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
DEBUG - Finished creating instance of bean 'ldapTemplate2'
DEBUG - Got Ldap context on server 'ldap://xxx.xx.xx.158:389/dc=domain,dc=com'
DEBUG - Entered setLdapTemplate getContextSource() getReadOnlyContext() dc=domain,dc=com
DEBUG - Entered setLdaptreepathminusroot ou=individualprovider
DEBUG - Returning cached instance of singleton bean 'org.springframework.security.methodSecurityMetadataSourceAdvisor'
DEBUG - Returning cached instance of singleton bean 'org.springframework.transaction.config.internalTransactionAdvisor'
DEBUG - Finished creating instance of bean 'PersonDao2'

在我看来，相关的两行是

DEBUG - Added autowiring by name from bean name 'ldapTemplate' via property  'contextSource' to bean named 'contextSource'

和

DEBUG - Added autowiring by name from bean name 'ldapTemplate2' via property 'contextSource' to bean named 'contextSource'

请注意，这两个都是

via property 'contextSource' to bean named 'contextSource'

ldapTemplate2应该得到：

via property 'contextSource' to bean named 'contextSource2'

更新：我被要求提供我用来连接我班级的代码。

第一种方式是：

@Controller
public class ManageAccountsController{
    private PersonDaoImpl personDao2;
}

使用这种方式我没有初始化personDao2

第二种方式是：

@Controller
public class ManageAccountsController{
    @Autowired PersonDaoImpl personDao2;
}

第三种方式是：

@Controller
public class ManageAccountsController{
    @Autowired @Qualifier("personDao2") PersonDaoImpl personDao2;
}

最后两种方法我得到了不正确的contextSource。 personDao的contextSource。

Answer 1

哦，好吧..我知道@qualifier有一些构造函数注入的问题.. 你可以尝试单注释@Resource(name="personDao2")而不是

 @Autowired
 @Qualifier("personDao2")

...让我知道结果..

Answer 2

所以听起来你已经在{xml}中明确地连接了net.sf.ldaptemplate.LdapTemplate，但是你在@Autowired的{{1}}属性上也有一个contextSource注释，我相信是问题。我建议你继续在LdapTemplate类上完全删除@Autowired，这样只有基于xml的连线才会生效。

Answer 3

我终于找到了解决方案。

我必须明确定义contextSource，例如

<bean id="ldapTemplate2" class="net.sf.ldaptemplate.LdapTemplate">
    <property name="contextSource" ref="contextSource2" />
</bean>

bean之间的注入不正确

3 个答案: