框架整合搭建实战练习记录2

上一篇文章里实现了一个基本的用户服务程序

框架整合搭建实战练习记录1

这里对程序进行改造

由原先的单用户服务情况下增加Eureka服务注册中心、Zuul智能路由、用户服务里增加用户余额的业务、order订单服务程序（order里增加Feign服务，用来调用用户余额服务）。

过程简要记录，具体可以看代码https://github.com/li39000yun/cloud3

一、增加注册服务中心eureka

1、新建一个model，eureka-server

2、修改application.properties为application.yml，使用yaml格式，设置port端口号8761

server:  port: 8761eureka:  instance:    hostname: localhost  client:    registerWithEureka: false    fetchRegistry: false    serviceUrl:      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

3、启动类上增加注解@EnableEurekaServer

package com.lyq;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@EnableEurekaServer@SpringBootApplicationpublic class EurekaServerApplication {public static void main(String[] args) {SpringApplication.run(EurekaServerApplication.class, args);}}

二、修改用户服务demo

1、增加用户余额功能，每个用户绑定一个账户金额

2、对外开放接口，实现两个功能

a)根据用户id查询余额

b)根据用户id修改余额

package com.lyq.controller;import com.lyq.model.AccTotal;import com.lyq.service.AccTotalService;import com.lyq.utils.AjaxJson;import org.apache.commons.lang.math.NumberUtils;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;/** * 账户余额对外接口 * Created by 云强 on 2017/11/12. */@RestControllerpublic class AccTotalRestController {    @Autowired    AccTotalService accTotalService;    /**     * 查询用户余额     * @param userId     * @return     */    @RequestMapping("/accTotal/find/{userId}")    public AccTotal findByUserId(@PathVariable("userId") Long userId) {        return accTotalService.findByUserId(userId);    }    /**     * 修改账户余额     * 给指定账户添加余额，如需要减少，则传入负数     * @param userId 用户id     * @param money 修改余额     * @return     */    @RequestMapping("/accTotal/update/{userId}")    public AjaxJson updateAccTotal(@PathVariable("userId") Long userId,Double money) {        AjaxJson j = new AjaxJson();        try{            // 获取余额            AccTotal accTotal = accTotalService.findByUserId(userId);            // 修改余额            accTotal.setAccTotal(accTotal.getAccTotal()+money);            // 更新余额            accTotalService.updateTotal(accTotal);            j.setObj(accTotal);        } catch (Exception e) {            j.setSuccess(false);            j.setMsg(e.getMessage());        }        return j;    }}

二、增加订单服务order

1、新建一个model，order

2、实现订单基本的增删改查功能，订单包括用户id，和金额

3、启动类开启feign功能

package com.lyq;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.boot.builder.SpringApplicationBuilder;import org.springframework.boot.web.support.SpringBootServletInitializer;import org.springframework.cloud.netflix.eureka.EnableEurekaClient;import org.springframework.cloud.netflix.feign.EnableFeignClients;@SpringBootApplication@EnableEurekaClient@EnableFeignClientspublic class OrderApplication extends SpringBootServletInitializer {    @Override    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {        return application.sources(OrderApplication.class);    }    public static void main(String[] args) {        SpringApplication.run(OrderApplication.class, args);    }}

4、Feign接口实现相关类

接口调用类AccTotalService

package com.lyq.service;import com.lyq.model.AccTotal;import com.lyq.utils.AjaxJson;import org.springframework.cloud.netflix.feign.FeignClient;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;/** * 调用接口类 * Created by 云强 on 2017/11/10. */@FeignClient(value = "service-demo")public interface AccTotalService {    /**     * 查询用户余额     *     * @param userId     * @return     */    @RequestMapping("/accTotal/find/{userId}")    public AccTotal findByUserId(@PathVariable("userId") Long userId);    /**     * 修改账户余额     * 给指定账户添加余额，如需要减少，则传入负数     *     * @param userId 用户id     * @param money  修改余额     * @return     */    @RequestMapping("/accTotal/update/{userId}")    public AjaxJson updateAccTotal(@PathVariable("userId") Long userId,@RequestParam(value = "money")  Double money);}

控制层实现订单余额修改调用功能

package com.lyq.controller;import com.lyq.model.OrderEntity;import com.lyq.service.AccTotalService;import com.lyq.service.OrderService;import com.lyq.utils.AjaxJson;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Value;import org.springframework.web.bind.annotation.*;import java.util.List;/** * 订单控制层 * Created by 云强 on 2017/11/8. */@RestControllerpublic class OrderController {    @Autowired    OrderService orderService;    @Autowired    AccTotalService accTotalService;    @Value("${server.port}")    String port;    @RequestMapping("/hello")    public String home(@RequestParam String name) {        return "hi " + name + ",i am from port:" + port;    }    @RequestMapping("/order/get/{id}")    public OrderEntity orderFindOne(@PathVariable("id") String id) {        return orderService.findOrderById(id);    }    @RequestMapping("/order/getList")    public List<OrderEntity> orderFindAll() {        return orderService.findAll();    }    @RequestMapping("/submit/{id}")    public AjaxJson sumbit(@PathVariable("id") String id) {        AjaxJson j = new AjaxJson();        try {            OrderEntity orderEntity = orderService.findOrderById(id);            return accTotalService.updateAccTotal(orderEntity.getUserId(), orderEntity.getMoney());        } catch (Exception e) {            j.setSuccess(false);            j.setMsg(e.getMessage());        }        return j;    }}

5、界面增加提交功能，当提交时调用用户账户服务，通过feign调用服务修改账户金额

三、增加zuul路由网关功能（作为客户端统一入口）

1、新建model：service-zuul

2、application.yml配置如下，增加用户及用户账户服务（demo）和订单服务（order）路由规则，端口号设置8769

eureka:  client:    serviceUrl:      defaultZone: http://localhost:8761/eureka/server:  port: 8769spring:  application:    name: service-zuulzuul:  routes:    api-a:      path: /api-a/**      serviceId: service-demo    api-b:      path: /api-b/**      serviceId: service-feign    demo:      path: /demo/**      serviceId: service-demo    order:      path: /order/**      serviceId: service-order

3、启动类开启zuul代理功能

package com.lyq;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.netflix.eureka.EnableEurekaClient;import org.springframework.cloud.netflix.zuul.EnableZuulProxy;@SpringBootApplication@EnableZuulProxy@EnableEurekaClientpublic class ServiceZuulApplication {public static void main(String[] args) {SpringApplication.run(ServiceZuulApplication.class, args);}}

四、测试

1、依次启动eureka-server、demo、order、service-zuul

2、访问http://localhost:8761/    可以看到用户服务、订单服务、zuul服务已经注册进去了

3、访问http://localhost:8769/demo/accTotal

自动跳转到http://localhost:8081/accTotal/list 打开了账户界面

4、访问http://localhost:8769/order打开订单服务列表界面

5、操作提交，再查看demo的用户余额，发现余额增加了，说明接口调用成功，成功实现两个服务之间的数据调用

保存成功返回值：

用户余额界面：

本次改造先到这里