Spring Social Linkedin - SignIn - spring-social-linkedin

Question

I am new to Spring social and trying to config spring social signin for linkedin.
My spring config file below,
<context:component-scan base-package="com.tc.web">
<context:include-filter type="regex"
expression="(service|controller|component)\..*" />
</context:component-scan>
<bean id="connectionFactoryLocator"
class="org.springframework.social.connect.support. ConnectionFactoryRegistry">
<property name="connectionFactories">
<list>
<bean
class="org.springframework.social.linkedin.connect .LinkedInConnectionFactory">
<constructor-arg value="key........" />
<constructor-arg value="secret .........." />
</bean>
</list>
</property>
</bean>
<bean id="textEncryptor" class="org.springframework.security.crypto.encrypt .Encryptors"
factory-method="noOpText" />
<bean id="usersConnectionRepository"
class="org.springframework.social.connect.jdbc.Jdb cUsersConnectionRepository">
<constructor-arg ref="dataSource" />
<constructor-arg ref="connectionFactoryLocator" />
<constructor-arg ref="textEncryptor" />
</bean>
<bean id="connectionRepository" factory-method="createConnectionRepository"
factory-bean="usersConnectionRepository" scope="request">
<constructor-arg value="#{request.userPrincipal.name}" />
<aop:scoped-proxy proxy-target-class="false" />
</bean>
<bean id="signInAdapter" class="com.tc.web.social.signin.SocialSignInAdapte r" />
<bean class="org.springframework.social.connect.web.Prov iderSignInController">
<!-- relies on by-type autowiring for the constructor-args -->
<constructor-arg ref="signInAdapter" />
<property name="applicationUrl" value="link" />
<property name="signUpUrl" value="link" />
<property name="signInUrl" value="link" />
</bean>
My SocialSignInAdapter.java is,
public class SocialSignInAdapter implements SignInAdapter{
#Override
public String signIn(String userId, Connection<?> connection, NativeWebRequest request) {
System.out.println("User Id is ===>>> "+userId);
System.out.println("Connection is ====>>> "+connection);
return null;
}
}
In Login.jsp,
<li class="linkedin"> </li>
When I click the above linkedin link, i get 404 error.
I guess my app is unable to find the ProviderSignInController for the request, ://dom:8080/myApp/signin/linkedin.
I suspect the below config in spring xml.
<context:component-scan base-package="com.tc.web">
<context:include-filter type="regex"
expression="(service|controller|component)\..*" />
</context:component-scan>
I have all my controller inside the package com.tc.web. But the ProviderSignInController is in Spring package and my app is unable to find it.
I tried the below as well.
<context:component-scan base-package="com.tc.web,org.springframework.social.con nect.web">
<context:include-filter type="regex"
expression="(service|controller|component)\..*" />
</context:component-scan>
I got ambigous mapping error for ProviderSignInController with the above config.
So, I removed the
<bean class="org.springframework.social.connect.web.Prov iderSignInController">
<!-- relies on by-type autowiring for the constructor-args -->
<constructor-arg ref="signInAdapter" />
<property name="applicationUrl" value="link" />
<property name="signUpUrl" value="link" />
<property name="signInUrl" value="link" />
</bean>
from my spring xml. But still I am getting the 404 error.
Could anyone help me on this please ..........
Thanks,
Baskar.S

Answer 1

The Controller that handles signin requests is org.springframework.social.connect.web.ProviderSignInController (present in spring-social-web-x.x.x.jar)
The Controller method is
#RequestMapping(value="/{providerId}", method=RequestMethod.POST)
public RedirectView signIn(#PathVariable String providerId, NativeWebRequest request)
So, as you can see, it only accepts POST requests. You will have to change the anchor link tag to a button that triggers a form submit.
e.g.
<form action="<c:url value="/signin/linkedin" />" method="POST" id="frmLiConnect"></form>
Secondly, in order for the Spring Controller, extend the ProviderSignInController with your own dummy Controller so that the Spring class is accessible.
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.social.connect.ConnectionFactoryLocator;
import org.springframework.social.connect.UsersConnectionRepository;
import org.springframework.social.connect.web.ProviderSignInController;
import org.springframework.social.connect.web.SignInAdapter;
import org.springframework.stereotype.Controller;
#Controller
public class SigninController extends ProviderSignInController {
#Autowired
public SigninController(ConnectionFactoryLocator connectionFactoryLocator,
UsersConnectionRepository usersConnectionRepository,
SignInAdapter signInAdapter) {
super(connectionFactoryLocator, usersConnectionRepository, signInAdapter);
// TODO Auto-generated constructor stub
}
}
For more details, you can also refer to the Spring Social Showcase examples at the below link.
https://github.com/spring-projects/spring-social-samples/tree/master/spring-social-showcase/src/main/java/org/springframework/social/showcase/signin
Hope this helps.