SpringCloud 融入 Python - Tornado
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_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
@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
end
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