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『高级篇』docker之开发课程EdgeService（16）
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原文鏈接地址：『高級篇』docker之開發(fā)課程EdgeService（16）
課程的edgeService依賴于課程服務(wù)的dubbo服務(wù)，對外提供的restAPI，跟用戶的EdgeService有點(diǎn)類似，只是一個(gè)調(diào)用的是thrift，一個(gè)調(diào)用的是dubbo，比較特殊的是課程的EdgeService需要用戶登錄后才可以訪問，如果沒有登錄的話，需要跳轉(zhuǎn)到登錄系統(tǒng)才可以訪問。源碼：github.com/limingios/m…
新建模塊course-edge-servce
<?xml version=
"1.0" encoding=
"UTF-8"?>
<project xmlns=
"http://maven.apache.org/POM/4.0.0"xmlns:xsi=
"http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation=
"http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.5.3.RELEASE</version></parent><modelVersion>4.0.0</modelVersion><groupId>com.idig8</groupId><artifactId>course-edge-service</artifactId><version>1.0-SNAPSHOT</version><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>commons-lang</groupId><artifactId>commons-lang</artifactId><version>2.6</version></dependency><dependency><groupId>io.dubbo.springboot</groupId><artifactId>spring-boot-starter-dubbo</artifactId><version>1.0.0</version></dependency><dependency><groupId>com.idig8</groupId><artifactId>course-dubbo-service-api</artifactId><version>1.0-SNAPSHOT</version></dependency><dependency><groupId>com.idig8</groupId><artifactId>user-edge-service-client</artifactId><version>1.0-SNAPSHOT</version></dependency></dependencies></project>
復(fù)制代碼- controller 調(diào)用course-dubbo-service-api 中的接口
package com.idig8.course.controller;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 2017/11/4.*/
@Controller
@RequestMapping(
"/course")
public class CourseController {@Referenceprivate ICourseService courseService;@RequestMapping(value =
"/courseList", method = RequestMethod.GET)@ResponseBodypublic List<CourseDTO> courseList(HttpServletRequest request) {UserDTO user = (UserDTO)request.getAttribute(
"user");System.out.println(user.toString());
return courseService.courseList();}
}
復(fù)制代碼package 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.*/
@Component
public class CourseFilter extends LoginFilter {@Value(
"${user.edge.service.addr}")private String userEdgeServiceAddr;@Overrideprotected String
userEdgeServiceAddr() {
return userEdgeServiceAddr;}@Overrideprotected void login(HttpServletRequest request, HttpServletResponse response, UserDTO userDTO) {request.setAttribute(
"user", userDTO);}
}
復(fù)制代碼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*/
@SpringBootApplication
public class ServiceApplication {public static void main(String args[]) {SpringApplication.run(ServiceApplication.class, args);}@Beanpublic FilterRegistrationBean filterRegistrationBean(CourseFilter courseFilter ) {FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();filterRegistrationBean.setFilter(courseFilter);List<String> urlPatterns = new ArrayList<String>();urlPatterns.add(
"/*");filterRegistrationBean.setUrlPatterns(urlPatterns);
return filterRegistrationBean;}
}
復(fù)制代碼server.port=8081
spring.dubbo.application.name=course-service
spring.dubbo.registry.address=zookeeper://47.98.183.16:2181
spring.dubbo.scan=com.idig8.courseuser.edge.service.addr=127.0.0.1:8082
復(fù)制代碼業(yè)務(wù)流程梳理
課程EdgeService 依賴用戶EdgeService服務(wù)，Thrift用戶服務(wù)，課程服務(wù)。課程 EdgeService pom 依賴了用戶登錄user-edge-service-client，user-edge-service-client用于檢測用戶是否登錄功能。需要調(diào)用用戶的服務(wù)。當(dāng)用戶完成登錄后，課程EdgeService 訪問課程服務(wù)，獲取課程的列表信息。課程EdgeService 依賴用戶EdgeService服務(wù)，Thrift用戶服務(wù)登錄控制，登錄后的跳轉(zhuǎn)功能。課程EdgeService 依賴與course-dubbo-service-api服務(wù)，用于獲取課程信息和用戶的課程信息。梳理下dubbo的思路
建立對應(yīng)的api項(xiàng)目定義方法。最終提供一個(gè)jar包供調(diào)用方和服務(wù)提供方使用。服務(wù)實(shí)現(xiàn)方引用api項(xiàng)目，實(shí)現(xiàn)里面的功能，提供端口，名稱，地址，zookeeper監(jiān)控中心。服務(wù)調(diào)用方引用api項(xiàng)目，引用zookeeper的監(jiān)控中心發(fā)現(xiàn)服務(wù)。直接調(diào)用服務(wù)就可以用服務(wù)實(shí)現(xiàn)方的方法了。程序演示
user-thrift-serviceuser-edge-servicecourse-dubbo-servicecourse-edge-service訪問http://127.0.0.1:8081 自動(dòng)跳轉(zhuǎn)到http://127.0.0.1:8082/user/login登錄獲取到token
3.訪問地址http://127.0.0.1:8081/course/courseList?token=ux4g5z98mowv0qr6r6e6ietdo00nh0vlPS：微服務(wù)跟之前說的一樣就是互相通過RPC的方式進(jìn)行通信，之間有自己的數(shù)據(jù)庫，只是RPC暴露接口的方式來獲取其他的微服務(wù)之間的數(shù)據(jù)。
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