Shulou(Shulou.com)06/03 Report--

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Original link address: "Advanced" docker Development course EdgeService (16)

The edgeService of the course depends on the dubbo service of the course service, and the external restAPI is similar to the user's EdgeService, except that one calls thrift and the other calls dubbo. The special thing is that the EdgeService of the course can only be accessed after the user has logged in. If you do not log in, you need to jump to the login system to access it. Source code: https://github.com/limingios/msA-docker

Create a new module course-edge-servce

Pom increases according to org.springframework.boot spring-boot-starter-parent 1.5.3.RELEASE 4.0.0 com.idig8 course-edge-service 1.0-SNAPSHOT org.springframework.boot spring-boot-starter-web commons-lang commons-lang 2.6 Io.dubbo.springboot spring-boot-starter-dubbo 1.0.0 com.idig8 course-dubbo-service-api 1.0-SNAPSHOT com.idig8 user-edge-service-client 1.0-SNAPSHOT

Controller calls interface package com.idig8.course.controller in course-dubbo-service-api

Import com.alibaba.dubbo.config.annotation.Reference

Import com.idig8.course.dto.CourseDTO

Import com.idig8.course.service.ICourseService

Import com.idig8.thrift.user.dto.UserDTO

Import org.springframework.stereotype.Controller

Import org.springframework.web.bind.annotation.RequestMapping

Import org.springframework.web.bind.annotation.RequestMethod

Import org.springframework.web.bind.annotation.ResponseBody

Import javax.servlet.http.HttpServletRequest

Import java.util.List

/ * *

Created by Michael on 2017According to 11 Universe 4.00 /

@ Controllerbr/ > * /

@ Controller

Public class CourseController {

@ Reference

Private ICourseService courseService

@ RequestMapping (value = "/ courseList", method = RequestMethod.GET) @ ResponseBodybr/ > @ ResponseBody

UserDTO user = (UserDTO) request.getAttribute ("user"); System.out.println (user.toString ()); return courseService.courseList ()

}

}

! [] (https://upload-images.jianshu.io/upload_images/11223715-58de6c1baaf6bccf.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)* adds filter component ```javapackage com.idig8.course.filter;import com.idig8.thrift.user.dto.UserDTO;import com.idig8.user.client.LoginFilter;import org.springframework.beans.factory.annotation.Value;import org.springframework.stereotype.Component;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Created by liming. * / @ Componentpublic class CourseFilter extends LoginFilter {@ Value ("${user.edge.service.addr}") private String userEdgeServiceAddr; @ Override protected String userEdgeServiceAddr () {return userEdgeServiceAddr;} @ Override protected void login (HttpServletRequest request, HttpServletResponse response, UserDTO userDTO) {request.setAttribute ("user", userDTO);}

Launch class package com.idig8.course

Import com.idig8.course.filter.CourseFilter

Import org.springframework.boot.SpringApplication

Import org.springframework.boot.autoconfigure.SpringBootApplication

Import org.springframework.boot.web.servlet.FilterRegistrationBean

Import org.springframework.context.annotation.Bean

Import java.util.ArrayList

Import java.util.List

/ * *

Created by liming*/

@ SpringBootApplicationbr/ > * /

@ SpringBootApplication

Public static void main (String args []) {

SpringApplication.run (ServiceApplication.class, args)

}

@ Bean

Public FilterRegistrationBean filterRegistrationBean (CourseFilter courseFilter) {

FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean ()

FilterRegistrationBean.setFilter (courseFilter)

List urlPatterns = new ArrayList (); urlPatterns.add ("/ *"); filterRegistrationBean.setUrlPatterns (urlPatterns); return filterRegistrationBean

}

}

! [] (https://upload-images.jianshu.io/upload_images/11223715-5cf13f17115c9b6d.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)* application. Properties```propertiesserver.port=8081#dubbo configspring.dubbo.application.name=course-servicespring.dubbo.registry.address=zookeeper://47.98.183.16:2181spring.dubbo.scan=com.idig8.courseuser.edge.service.addr=127.0.0.1:8082

Business process carding

Course EdgeService relies on user EdgeService service, Thrift user service, course service. The course EdgeService pom relies on the user login user-edge-service-client,user-edge-service-client function to detect whether the user is logged in. The user's service needs to be invoked. When the user has finished logging in, the course EdgeService accesses the course service to obtain the list information of the course. The course EdgeService relies on user EdgeService service, Thrift user service login control, and jump function after login. Course EdgeService relies on course-dubbo-service-api services to obtain course information and user's course information. Sort out the ideas of dubbo to establish the corresponding api project definition method. Finally, a jar package is provided for use by callers and service providers. The service implementer refers to the api project, implements the functions inside, and provides the port, name, address, and zookeeper monitoring center. The service caller references the api project and references the monitoring center of zookeeper to discover the service. The method of the service implementer can be used by invoking the service directly. Program demonstration

Start services (in order)

User-thrift-serviceuser-edge-servicecourse-dubbo-servicecourse-edge-service interface demo access http://127.0.0.1:8081 automatically jump to http://127.0.0.1:8082/user/login login to get token

3. Access address http://127.0.0.1:8081/course/courseList?token=ux4g5z98mowv0qr6r6e6ietdo00nh0vl

PS: as mentioned before, microservices communicate with each other through RPC, with their own databases, but RPC exposes interfaces to obtain data between other microservices.

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