I just announced the new Spring Boot 2 material, coming in REST With Spring:
This is a comprehensive guide to using Apache HttpClient 4 - from starting out to advanced configuration and best practices.
1. HttpClient Basics
Learn the basics of sending a Request, receiving and interpreting the Response and configure the Client for basic usage.
>> Posting with HttpClient (popular)
2. Advanced Usage
Go into more advanced usecases of configuring the client with SSL, Custom Cookies, different types of Requests, etc.
>> HttpClient with SSL (popular)
>> HttpClient Basic Authentication (popular)
The implementation of all these examples and code snippets can be found in my github project – this is an Eclipse based project, so it should be easy to import and run as it is.