新增spring cloud用例
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罗祥
50
spring-cloud/spring-cloud-zuul/consumer/pom.xml
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50
spring-cloud/spring-cloud-zuul/consumer/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>com.heibaiying.zuul</groupId>
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<artifactId>spring-cloud-zuul</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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</parent>
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<artifactId>consumer</artifactId>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-freemarker</artifactId>
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</dependency>
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<!-- feign 依赖-->
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-openfeign</artifactId>
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</dependency>
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<!--引入对公共模块的依赖-->
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<dependency>
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<groupId>com.heibaiying.zuul</groupId>
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<artifactId>common</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<scope>compile</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>
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package com.heibaiying.consumer;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
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import org.springframework.cloud.openfeign.EnableFeignClients;
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@SpringBootApplication
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@EnableDiscoveryClient
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@EnableFeignClients
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public class ConsumerApplication {
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public static void main(String[] args) {
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SpringApplication.run(ConsumerApplication.class, args);
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}
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}
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package com.heibaiying.consumer.config;
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import feign.Retryer;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import static java.util.concurrent.TimeUnit.SECONDS;
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/**
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* @author : heibaiying
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* @description : feign 配置
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*/
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@Configuration
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public class FeignConfig {
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@Bean
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public Retryer retryer(){
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//重试间隔为 100ms，最大重试时间为 1s, 重试次数为 5 次
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return new Retryer.Default(100,SECONDS.toMillis(1),5);
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}
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}
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package com.heibaiying.consumer.controller;
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import com.heibaiying.common.bean.Product;
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import com.heibaiying.consumer.feign.CProductFeign;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
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import org.springframework.web.bind.annotation.*;
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import java.util.Date;
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import java.util.List;
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import java.util.stream.Collectors;
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/**
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* @author : heibaiying
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*/
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@Controller
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@RequestMapping("sell")
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public class SellController {
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@Autowired
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private CProductFeign cproductFeign;
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@GetMapping("products")
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public String productList(Model model) {
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List<Product> products = cproductFeign.productList();
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model.addAttribute("products", products);
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return "products";
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}
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@GetMapping("product/{id}")
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public String productDetail(@PathVariable int id, Model model) {
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Product product = cproductFeign.productDetail(id);
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model.addAttribute("product", product);
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return "product";
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}
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@PostMapping("product")
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public String save(@RequestParam String productName) {
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long id = Math.round(Math.random() * 100);
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Product product = new Product(id, productName, false, new Date(), 88);
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cproductFeign.save(product);
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return "redirect:products";
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}
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}
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package com.heibaiying.consumer.feign;
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import com.heibaiying.common.feign.ProductFeign;
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import com.heibaiying.consumer.config.FeignConfig;
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import com.heibaiying.consumer.feign.impl.CProductFeignImpl;
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import org.springframework.cloud.openfeign.FeignClient;
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/**
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* @author : heibaiying
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* @description : 声明式接口调用
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*/
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@FeignClient(value = "producer",configuration = FeignConfig.class,fallback = CProductFeignImpl.class)
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public interface CProductFeign extends ProductFeign {
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}
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package com.heibaiying.consumer.feign.impl;
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import com.heibaiying.common.bean.Product;
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import com.heibaiying.consumer.feign.CProductFeign;
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import org.springframework.stereotype.Component;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* @author : heibaiying
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* @description : 定义发生错误时候的熔断处理。除了继承自CProductFeign,还需要用@Component声明为spring的组件
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*/
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@Component
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public class CProductFeignImpl implements CProductFeign {
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@Override
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public List<Product> productList() {
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return new ArrayList<>();
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}
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@Override
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public Product productDetail(int id) {
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return null;
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}
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@Override
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public void save(Product product) {
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}
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}
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server:
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port: 8080
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# 指定服务命名
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spring:
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application:
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name: consumer
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# 指定注册中心地址
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eureka:
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client:
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serviceUrl:
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defaultZone: http://localhost:8010/eureka/
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feign:
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hystrix:
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# 如果为true，则OpenFign客户端将使用Hystrix断路器进行封装 默认为false
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enabled: true
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<!doctype html>
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<html lang="en">
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<head>
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<title>产品详情</title>
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</head>
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<body>
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<ul>
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<li>产品名称:${product.name}</li>
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<li>产品序列号:${product.id}</li>
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<li>是否贵重品:${product.isPrecious?string('是','否')}</li>
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<li>生产日期: ${product.dateInProduced?string("yyyy-MM-dd HH:mm:ss")}</li>
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<li>产品价格:${product.price}</li>
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</ul>
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</body>
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</html>
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<!doctype html>
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<html lang="en">
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<head>
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<title>产品列表</title>
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</head>
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<body>
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<h3>产品列表:点击查看详情</h3>
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<form action="/sell/product" method="post">
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<input type="text" name="productName">
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<input type="submit" value="新增产品">
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</form>
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<ul>
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<#if (products?size>0) >
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<#list products as product>
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<li>
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<a href="/consumer/sell/product/${product.id}">${product.name}</a>
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</li>
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</#list>
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<#else>
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<h4 style="color: red">当前排队人数过多，请之后再购买！</h4>
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</#if>
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</ul>
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</body>
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</html>
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package com.heibaiying.consumer;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.test.context.junit4.SpringRunner;
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@RunWith(SpringRunner.class)
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@SpringBootTest
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public class ConsumerApplicationTests {
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@Test
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public void contextLoads() {
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}
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}
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