GuLi商城-SpringCloud Alibaba-Nacos配置中心-简单示例

小灰灰 2024-03-25 21:52 108阅读 0赞

[GitHub - alibaba/spring-cloud-alibaba: Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.][GitHub - alibaba_spring-cloud-alibaba_ Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.]

![7ce973882dbd4ddea029c29fb59594c1.png][]

![ee5fbac7ed40462eb992f7a3dfd5e5ad.png][]

[spring-cloud-alibaba/readme-zh.md at 2022.x · alibaba/spring-cloud-alibaba · GitHub][spring-cloud-alibaba_readme-zh.md at 2022.x _ alibaba_spring-cloud-alibaba _ GitHub]

![9888472f978f492cbbe8d43f5e606501.png][]

因为版本问题，上面最新的文档没有使用bootstrap.properties，

下面我们用的是bootstrap.properties配置

--------------------

![1be2ad742ee941eaace50ffb4f093cfb.png][]

1.引入配置中心依赖，放到common中

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

2. 在优惠券微服务中创建/src/main/resources/bootstrap.properties ，这个文件是springboot里规定

的，它的优先级比application.properties高

spring.application.name=gulimall-coupon
    
    spring.cloud.nacos.config.server-addr=127.0.0.1:8848

![482840f841cb4aa490aeeb5eda0f1837.png][]

![fdf43d1e1232455b82114d124e3eb2f8.png][]

测试，用传统方式：

![069c1678897b4d2b8ab3dfe57ebd0f35.png][]

![0bef12d7051e4c18996bd06f18d0c656.png][] ![c01393167fde4dd5bdef5b9574291700.png][]

这样做存在的一个问题，如果频繁的修改application.properties，在需要频繁重新打包部署。下面

我们将采用Nacos的配置中心来解决这个问题。

3.给配置中心添加一个叫数据集（Data id）gulimall-coupon.properties 默认规则 ，应用

名.properties

coupon.user.name=zhangsan
    coupon.user.age=24

![ea43203bf56d407fb260fdd2f2afbbec.png][]

![ee395590786541e2b65051f047199e8b.png][]

DataID：gulimall-coupon
    
    配置格式：properties
    
    文件的命名规则为：${spring.application.name}-${spring.profiles.active}.${spring.cloud.nacos.config.file-extension}
    
    ${spring.application.name}：为微服务名
    
    ${spring.profiles.active}：指明是哪种环境下的配置，如dev、test或info
    
    ${spring.cloud.nacos.config.file-extension}：配置文件的扩展名，可以为properties、yml等

4.修改CouponController类，添加@RefreshScope注解

@RefreshScope ：动态刷新nacos配置

@RestController
    @RequestMapping("coupon/coupon")
    @RefreshScope
    public class CouponController {

这样会动态的从配置中心读取配置，并且在指明了相同的配置信息时，配置中心中设置的值优先

于本地配置。

配置中心是zhangsan 24，本地是lisi 20

我们测试下配置中心中设置的值是不是优先于本地配置，结果失败了，没有读取配置中心的值。

![241b37355f954ccb8ae2ca623f69e481.png][]

![c5ae19c5debb4853993baf6f8f6d7dd2.png][]

nacos在springboot 2.4.0之后的版本不再使用Bootstrap container，改为spring.config.import方式

引入

在common服务中新增依赖：

在SpringBoot 2.4.x的版本之后，对于bootstrap.properties/bootstrap.yaml配置文件(我们合起来成为Bootstrap配置文件)的支持，需要导入如下的依赖
    
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-bootstrap</artifactId>
        <version>3.1.5</version>
    </dependency>

![fbf797fcd8ce40df903478ae9f7fac90.png][]

再次测试ok，读取到了配置中心的值：

![a6c87c373ee24f06b4aa1a569c646dc4.png][]

参考：

[gulimall-learning/谷粒商城—分布式基础.md at master · OYCodeSite/gulimall-learning · GitHub][gulimall-learning_.md at master _ OYCodeSite_gulimall-learning _ GitHub]

[谷粒商城-day03-服务配置中心Nacos和网关Gateway\_nacos服务分组 网关如何区分\_周周写不完的代码的博客-CSDN博客][-day03-_Nacos_Gateway_nacos_ _-CSDN]

[谷粒商城笔记 + 完整代码 + 课件资料（基础篇）（学习记录）\_谷粒商城资料\_待别三日的博客-CSDN博客][_ _ _ _-CSDN]

[谷粒商城-微服务-注册中心-配置中心-网关\_注册中心 网关\_saudadessss的博客-CSDN博客][-_-_-_-_ _saudadessss_-CSDN]

[谷粒商城分布式基础篇1-个人版\_断河愁的博客-CSDN博客][1-_-CSDN]

[SpringCloudAlibaba—Nacos config\_spring-cloud-starter-alibaba-nacos-config\_JagTom的博客-CSDN博客][SpringCloudAlibaba_Nacos config_spring-cloud-starter-alibaba-nacos-config_JagTom_-CSDN]

[nacos 1.4.2 + springboot 2.4.2 实现配置中心+自动刷新\_qq\_16320351的博客-CSDN博客][nacos 1.4.2 _ springboot 2.4.2 _qq_16320351_-CSDN]

[GitHub - alibaba_spring-cloud-alibaba_ Spring Cloud Alibaba provides a one-stop solution for application development for the distributed solutions of Alibaba middleware.]: https://github.com/alibaba/spring-cloud-alibaba
[7ce973882dbd4ddea029c29fb59594c1.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/a610077a49374cc4b6ec35b7f5f04760.png
[ee5fbac7ed40462eb992f7a3dfd5e5ad.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/aad6a272a93341b39ad773d67e6ca254.png
[spring-cloud-alibaba_readme-zh.md at 2022.x _ alibaba_spring-cloud-alibaba _ GitHub]: https://github.com/alibaba/spring-cloud-alibaba/blob/2022.x/spring-cloud-alibaba-examples/nacos-example/nacos-config-example/readme-zh.md
[9888472f978f492cbbe8d43f5e606501.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/a0bf2c56403f4176a1610fdc1e3d46b7.png
[1be2ad742ee941eaace50ffb4f093cfb.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/90bb0fd3db974ebe91b370d49c811f2a.png
[482840f841cb4aa490aeeb5eda0f1837.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/6380222109584905aec3cfaeb1ceb084.png
[fdf43d1e1232455b82114d124e3eb2f8.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/44b7ca12b95e4a33a2e953dc8fb6f144.png
[069c1678897b4d2b8ab3dfe57ebd0f35.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/3e5ff44c6cb8445a9cf52c3a9e54e835.png
[0bef12d7051e4c18996bd06f18d0c656.png]: https://img-blog.csdnimg.cn/0bef12d7051e4c18996bd06f18d0c656.png
[c01393167fde4dd5bdef5b9574291700.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/2e63a837c0bb40439a746776608a8e98.png
[ea43203bf56d407fb260fdd2f2afbbec.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/b6ff44391c5b4a6594c01bf8a579f4c7.png
[ee395590786541e2b65051f047199e8b.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/c7742d0d620044ad94772b5d0c9f097d.png
[241b37355f954ccb8ae2ca623f69e481.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/e7e16ead3b1d4535b21a29e7a9f8189d.png
[c5ae19c5debb4853993baf6f8f6d7dd2.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/14248725849347479b0f614a11635f0d.png
[fbf797fcd8ce40df903478ae9f7fac90.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/69553fd9efbf425eb46b28869e7f39bf.png
[a6c87c373ee24f06b4aa1a569c646dc4.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/25/5219c23f442c4260a35a8ce9b4440449.png
[gulimall-learning_.md at master _ OYCodeSite_gulimall-learning _ GitHub]: https://github.com/OYCodeSite/gulimall-learning/blob/master/docs/%E8%B0%B7%E7%B2%92%E5%95%86%E5%9F%8E%E2%80%94%E5%88%86%E5%B8%83%E5%BC%8F%E5%9F%BA%E7%A1%80.md
[-day03-_Nacos_Gateway_nacos_ _-CSDN]: https://blog.csdn.net/qq_39007838/article/details/114478259
[_ _ _ _-CSDN]: https://blog.csdn.net/weixin_44190665/article/details/121043585?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522167938739616800184167302%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=167938739616800184167302&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-121043585-null-null.142%5Ev74%5Epc_search_v2,201%5Ev4%5Eadd_ask,239%5Ev2%5Einsert_chatgpt&utm_term=%E8%B0%B7%E7%B2%92%E5%95%86%E5%9F%8E&spm=1018.2226.3001.4187#1_nacos_1015
[-_-_-_-_ _saudadessss_-CSDN]: https://blog.csdn.net/saudadessss/article/details/126455089?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522167938987716800215090677%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=167938987716800215090677&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~baidu_landing_v2~default-1-126455089-null-null.142%5Ev74%5Epc_search_v2,201%5Ev4%5Eadd_ask,239%5Ev2%5Einsert_chatgpt&utm_term=%E8%B0%B7%E7%B2%92%E5%95%86%E5%9F%8E%20%E9%85%8D%E7%BD%AE%E4%B8%AD%E5%BF%83&spm=1018.2226.3001.4187
[1-_-CSDN]: https://blog.csdn.net/qq_52922453/article/details/127374356#4.4%20%E9%85%8D%E7%BD%AE%E4%B8%AD%E5%BF%83
[SpringCloudAlibaba_Nacos config_spring-cloud-starter-alibaba-nacos-config_JagTom_-CSDN]: https://blog.csdn.net/m0_46845579/article/details/126126290
[nacos 1.4.2 _ springboot 2.4.2 _qq_16320351_-CSDN]: https://blog.csdn.net/qq_16320351/article/details/128733257