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This article mainly explains "What is Feign Principle". The explanation in this article is simple and clear, easy to learn and understand. Please follow the ideas of Xiaobian and go deep into it slowly to study and learn "What is Feign Principle" together!

https://blog.csdn.net/forezp/article/details/73480304

Feign's source code implementation process is as follows:

Start with @ EnableFeigCleints

Implement the interface according to Feign's rules, and add @FeignCleint annotation

When the program starts, it does a package scan, scanning all classes annotated with @ FeigCleint and injecting this information into the ioc container.

When methods of the interface are invoked, specific RequesTemplate is generated by proxy of jdk

RequiesTemplate is generating requests

Request is handled by Client, where Client can be HttpUrlConnection, HttpClient or Okhttp.

Finally, Client is encapsulated in the LoadBalanceClient class, which in conjunction with the Ribbon class achieves Load Balancer.

Thank you for your reading. The above is the content of "What is Feign Principle?" After studying this article, I believe everyone has a deeper understanding of what Feign Principle is. The specific use situation still needs to be verified by practice. Here is, Xiaobian will push more articles related to knowledge points for everyone, welcome to pay attention!

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