尚硅谷-谷粒商城-个人学习笔记【服务构建篇】

缺乏、安全感 2022-12-23 09:40 134阅读 0赞

**整个项目需要用到的技术搭配方案：**

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## 引入SpringCloud Alibaba ##

在common模块的pom文件中引入依赖：

<dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>2.2.3.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>

`dependencyManagement`引入依赖管理。以后再`dependencies`中引入SpringCloudAlibaba相关依赖不用写版本号

## SpringCloud Alibaba-Nacos ##

[Nacos下载页][Nacos]下载完成后进入cmd进入bin目录，然后输入命令startup.cmd -m standalone 这里是将nacos以单机模式运行  
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*  在common模块下pom文件中引入nacos依赖：

<dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            </dependency>

*  在coupon模块下application.yml文件中配置：

spring:
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848
      application:
        name: gulimall-coupon

*  启动类中新增开启服务注册发现客户端注解`@EnableDiscoveryClient`
 *  启动后在nacos查看结果  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 2]

## SpringCloud-OpenFeign ##

coupon服务中写出需要被调用的接口

/**
         * 测试OpenFeign
         */
        @RequestMapping("/testOpenFeign")
        public R memberCoupon() {
        
            CouponEntity couponEntity = new CouponEntity();
            couponEntity.setCouponName("满100-50");
            return R.ok().put("coupons", Arrays.asList(couponEntity));
        }

*  在调用者中引入OpenFeign依赖

<dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>

*  编写接口，寓意这个接口需要调用远程服务

/**
     * 这是一个声明式的远程调用
     */
    @FeignClient("gulimall-coupon")
    public interface CouponFeignService {
        
    
        @RequestMapping("/coupon/coupon/testOpenFeign")
        R memberCoupons();
    
    }

*  编写调用者接口

@Autowired
        CouponFeignService couponFeignService;
    
        @RequestMapping("/coupons")
        public R test(){
        
            MemberEntity memberEntity = new MemberEntity();
            memberEntity.setNickname("张三");
    
            R memberCoupons = couponFeignService.memberCoupons();
            return R.ok().put("member",memberEntity).put("coupons",memberCoupons.get("coupons"));
        }

*  主启动类新增`@EnableDiscoveryClient`注解
 *  访问member下coupons接口，实则请求coupon服务中的/coupon/coupon/testOpenFeign接口  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 3]

## Nacos配置中心 ##

给common中导入相关依赖

<dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            </dependency>

Resourse文件下创建`bootstrap.properties`文件，指定注册中心地址于服务名称：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 4]  
编写测试接口与在注册中心创建配置文件：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 5]  
![在这里插入图片描述][20201124162333409.png_pic_center]  
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访问接口查看结果  
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这里优先级为`bootstrap` 、`配置中心`、`application`  
**从配置中心同时加载多个配置集**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 9]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 10]  
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![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 14]  
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## Gateway ##

新建gulimall-gateway模块  
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![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 18]  
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**结果：**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center 23]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2MzU3Mzg0_size_16_color_FFFFFF_t_70_pic_center]: /images/20221120/031668b1e4fc48ed91e42181518c4b26.png
[Nacos]: https://github.com/alibaba/nacos/releases
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[20201124162333409.png_pic_center]: /images/20221120/16c636d5c9ad4ce4a435fdb532aa3452.png
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