SpringCloud融入Python的实现

SpringCloud融入Python的实现

前言

该篇文章分享如何将python Web服务融入到Spring Cloud微服务体系中，并调用其服务，Python Web框架用的是Tornado

构建Python web服务

引入py-eureka-client客户端

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_argumentfOnWxTfkQs('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()

# 注册eureka服务

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.ApplicafOnWxTfkQstion(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()

大致说下上述代码，向端口为31091的注册中心注册服务名为python-tornado的服务，端口为3333，提供两个请求方式为GET和POST，接口路径为/test和/main的外部调用接口

启动python服务(在此之前要创建一个Eureka服务注册中心)

python manage.py runserver

运行结果

服务调用(Feign) - Feign用于便捷调用HTTP API

congfig类中需添加注解@EnableFeignClients，具体使用请百度

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 messageConverters;

@Bean

public Encoder feignFormEncoder() {

return new SpringFormEncoder(new SpringEncoder(messageConverters));

}

}

Feign依赖

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

运行结果

在这里，我们用请求工具Postman来测试一下，可以看出，由TestController调用TestAPIClient再调用Python服务，至此，已完成微服务调用Python Web服务

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