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 pythonimport tornado.httpserverimport tornado.ioloopimport tornado.optionsimport tornado.webimport py_eureka_client.eureka_client as eureka_clientfrom tornado.options import 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 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.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
@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<HttpMessageConverters> messageConverters; @Bean public Encoder feignFormEncoder() { return new SpringFormEncoder(new SpringEncoder(messageConverters)); }}
Feign依赖
<!-- 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>
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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本文标题: SpringCloud融入Python的实现
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