java backed webscripts or spring dependency injection

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Hi every one
Im using spring in my application and also needs to use alfresco services in my application , Im confused that how I Use spring Injection to get alfresco services?is spring injection as same as java backed web scripts or not?
can I use alfresco services in my application directly or I should add my codes as an amp file to alfresco?
thanks

kaynezhang

If you want to use alfresco services your my application directly ,you should  embed Alfresco into your application,make your application and Alfresco reside in the same process.It is not recommended ,you should consider other remote apis(opencmis,webscript)

If you really want to embed alfresco in to your application
There are many options you can inject alfresco services to you bean.
You can just inject alfresco service bean you want to refer to
for example authenticationService

in your java class import org.alfresco.service.cmr.security.AuthenticationService
   <bean id="yourbeanid" class="com.**.YourClass" >
      <property name="authenticationService" ref="authenticationService" />
..
   </bean>
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Or you can inject ServiceRegistry to you bean ,from ServiceRegistry you can get all public service api.this option is recommended

in your java clss import org.alfresco.service.ServiceRegistry;
in spring configuration file config bean
   <bean id="yourbeanid" class="com.**.YourClass" >
   <property name="serviceRegistry" ref="ServiceRegistry" />
   </bean>
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