SpringCloud融入Python的實(shí)現(xiàn)

來源：本站原創(chuàng)|時間：2020-01-10|欄目：Java|點(diǎn)擊：次

前言

該篇文章分享如何將Python Web服務(wù)融入到Spring Cloud微服務(wù)體系中，并調(diào)用其服務(wù)，Python Web框架用的是Tornado

構(gòu)建Python web服務(wù)

引入py-eureka-client客戶端

pip install py_eureka_client

manage.py

#!/usr/bin/env python
import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
import py_eureka_client.eureka_client as eureka_client
from tornado.options import define, options
from time import sleep

define("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 User!')
    
  def post(self):
    username = self.get_argument('username', 'Hello')
    self.write(username + ', Administrator User!')

class MainHandler(tornado.web.RequestHandler):
  def get(self):
    username = self.get_argument('username', 'Hello')
    self.write(username + ', Coisini User!')

  def post(self):
    username = self.get_argument('username', 'Hello')
    self.write(username + ', Coisini User!')

def main():
  tornado.options.parse_command_line()
  # 注冊eureka服務(wù)
  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()

大致說下上述代碼，向端口為31091的注冊中心注冊服務(wù)名為python-tornado的服務(wù)，端口為3333，提供兩個請求方式為GET和POST，接口路徑為/test和/main的外部調(diào)用接口

啟動python服務(wù)(在此之前要創(chuàng)建一個Eureka服務(wù)注冊中心)

python manage.py runserver

運(yùn)行結(jié)果

服務(wù)調(diào)用(Feign) - Feign用于便捷調(diào)用HTTP API

congfig類中需添加注解@EnableFeignClients，具體使用請百度

TestController.java

@RestController
public 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;

@Configuration
public class FeignConfigure {
  @Bean
  Logger.Level feignLoggerLevel() {
    return Logger.Level.FULL;
  }

  @Autowired
  private ObjectFactory<HttpMessageConverters> messageConverters;
  
  @Bean
  public Encoder feignFormEncoder() {
    return new SpringFormEncoder(new SpringEncoder(messageConverters));
  }
}

Feign依賴

<!-- Feign Client -->
<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
<dependency>
  <groupId>io.github.openfeign.form</groupId>
  <artifactId>feign-form</artifactId>
  <version>3.4.1</version>
</dependency>
<dependency>
  <groupId>io.github.openfeign.form</groupId>
  <artifactId>feign-form-spring</artifactId>
  <version>3.4.1</version>
</dependency>

運(yùn)行結(jié)果

在這里，我們用請求工具Postman來測試一下，可以看出，由TestController調(diào)用TestAPIClient再調(diào)用Python服務(wù)，至此，已完成微服務(wù)調(diào)用Python Web服務(wù)

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持我們。

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