How to realize the Integration of SpringCloud into Python
This article will explain in detail how to integrate SpringCloud into Python. The content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.
Preface
This article shares how to integrate Python Web services into the Spring Cloud microservice architecture and invoke its services. The Python Web framework uses Tornado.
Build a Python web service
Introduction of py-eureka-client client
Pip install py_eureka_client
Manage.py
#! / usr/bin/env pythonimport tornado.httpserverimport tornado.ioloopimport tornado.optionsimport tornado.webimport py_eureka_client.eureka_client as eureka_clientfrom tornado.optionsimport define, optionsfrom time import sleepdefine ("port", default=3333, help= "run on the given port", type=int) class IndexHandler (tornado.web.RequestHandler): def get (self): username = self.get_argument ('username',' Hello') self.write (username +', Administrator username') Def post (self): username = self.get_argument ('username',' Hello') self.write (username +', Administrator username') class MainHandler (tornado.web.RequestHandler): def get (self): username = self.get_argument ('username',' Hello') self.write (username +', Coisini username') Def post (self): username = self.get_argument ('username',' Hello') self.write (username +', Coisini username') def main (): tornado.options.parse_command_line () # register eureka service eureka_client.init_registry_client (eureka_server= "http://localhost:31091/eureka/,http://localhost:8761/eureka/", app_name=" python-tornado ", instance_port=3333) app = tornado.web.Application (handlers= [(r" / test ", IndexHandler) (r "/ main", MainHandler)]) http_server = tornado.httpserver.HTTPServer (app) http_server.listen (options.port) tornado.ioloop.IOLoop.instance (). Start () if _ name__ = ='_ main__': main ()
Roughly speaking, the above code registers a service named python-tornado with the registry service with port 31091, port 3333, provides two request methods: GET and POST, and the interface path is / test and / main.
Start the python service (create an Eureka service registry before that)
Python manage.py runserver
Running result
Service invocation (Feign)-Feign for convenient invocation of HTTP API
You need to add an annotation @ EnableFeignClients to the congfig class. For more information, please use Baidu.
TestController.java
RestControllerpublic class TestController {private TestAPIClient testAPIClient; @ Autowired public TestController (TestAPIClient testAPIClient) {this.testAPIClient = testAPIClient;} @ PostMapping ("/ test") public String test (@ RequestParam String username) throws Exception {return this.testAPIClient.test (username);} @ GetMapping ("/ test") public String test1 () throws Exception {return this.testAPIClient.test1 ();}}
TestAPIClient.java
FeignClient (name= "python-tornado", configuration = FeignConfigure.class) public interface TestAPIClient {@ PostMapping ("/ test") String test (@ RequestParam ("username") String username); @ GetMapping ("/ test") String test1 ();}
FeignConfigure.java
Import feign.Logger;import feign.codec.Encoder;import feign.form.spring.SpringFormEncoder;import org.springframework.beans.factory.ObjectFactory;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.autoconfigure.web.HttpMessageConverters;import org.springframework.cloud.netflix.feign.support.SpringEncoder;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;@Configurationpublic class FeignConfigure {@ Bean Logger.Level feignLoggerLevel () {return Logger.Level.FULL;} @ Autowired private ObjectFactory messageConverters @ Bean public Encoder feignFormEncoder () {return new SpringFormEncoder (new SpringEncoder (messageConverters));}}
Feign dependence
Org.springframework.cloud spring-cloud-starter-feign io.github.openfeign.form feign-form 3.4.1 io.github.openfeign.form feign-form-spring 3.4.1
Running result
Here, we test it with the request tool Postman. We can see that TestController invokes TestAPIClient and then invokes the Python service. At this point, the micro service invokes the Python Web service.
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