Spring Social LinkedIn : 'org.springframework.social.linkedin.api.LinkedIn' that could not be found - spring-boot

Question

I'm trying to create a Spring Social application with Spring Boot and Im facing issues starting it . I have gone through Spring social documentation and Spring Social sample projects searching around the web. Whatever Ive tried did not work and I was wandering if someone can help me with this here .
LinkedInController
package com.example.demo;
import org.springframework.social.connect.ConnectionRepository;
import org.springframework.social.linkedin.api.LinkedIn;
import org.springframework.social.linkedin.api.ProfileOperations;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
#RequestMapping("/linkedin")
public class LinkedInController {
private static final String LINKEDIN_DISPLAY = "linkedin";
private static final String LINKEDIN_REDIRECT = "redirect:/connect/linkedin";
private LinkedIn linkedIn;
private ConnectionRepository connectionRepository;
public LinkedInController(LinkedIn linkedIn, ConnectionRepository connectionRepository) {
this.linkedIn = linkedIn;
this.connectionRepository = connectionRepository;
}
#GetMapping
public String helloLinkedIn(Model model) {
if (connectionRepository.findPrimaryConnection(LinkedIn.class) == null) {
return LINKEDIN_REDIRECT;
}
ProfileOperations user = linkedIn.profileOperations();
System.out.println(user);
model.addAttribute("linkedInProfile",linkedIn.profileOperations().getUserProfileFull());
return LINKEDIN_DISPLAY;
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>HCLinkedIn</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>HCLinkedIn</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<start-class>com.example.demo.HcLinkedInApplication</start-class>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.social</groupId>
<artifactId>spring-social-linkedin</artifactId>
<version>1.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.social</groupId>
<artifactId>spring-social-core</artifactId>
<version>1.1.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.social</groupId>
<artifactId>spring-social-config</artifactId>
<version>1.1.6.RELEASE</version>
</dependency>
<!-- <dependency>
<groupId>org.springframework.social</groupId>
<artifactId>spring-social-security</artifactId>
<version>1.1.6.RELEASE</version>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<repositories>
<repository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/libs-milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>spring-snapshots</id>
<name>Spring Snapshots</name>
<url>https://repo.spring.io/libs-milestone</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
application.properties
spring.social.linkedin.app-id=<<client-key>>
spring.social.linkedin.app-secret=<<client-secret>>

Answer 1

I had the same issue, turns out I forgot to add the OAuth2.0 redirect url.
Log in to your developer's account on linkedin and under the heading OAuth 2.0
There will be an input field for the redirect url called Authorized Redirect URLs:
Add the redirect url..say you are testing using your localhost, put http://localhost:8080/connect/linkedin
replace 8080 by your port and /connect/linkedin by whatever you are using to access the authorization.
Also, incase you haven't specified..add linkedinConnect.html and linkedinConnected.html to your templates/connect