文章目录
- cubemall-common
- cubemall-product
- cubemall-gateway
https://nacos.io/
https://github.com/alibaba/nacos/releases/tag/1.4.1
https://github.com/alibaba/spring-cloud-alibaba
https://github.com/alibaba/Nacos
https://developer.aliyun.com/mvn/guide
https://docs.spring.io/spring-cloud-gateway/docs/2.2.8.RELEASE/reference/html/
mvn clean install -U
nacos下载
git clone https://github.com/alibaba/nacos.git
启动服务器
Linux/Unix/Mac
启动命令(standalone代表着单机模式运行,非集群模式):
sh startup.sh -m standalone
如果使用的是ubuntu系统,或者运行脚本报错提示[[符号找不到,可尝试如下运行:
bash startup.sh -m standalone
Windows
startup.cmd -m standalone
http://127.0.0.1:8848/nacos
cubemall-common
<dependencyManagement><dependencies><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-dependencies</artifactId><version>2.1.0.RELEASE</version><type>pom</type><scope>import</scope></dependency></dependencies>
</dependencyManagement>
<!--服务注册/发现-->
<dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<!--配置中心-->
<dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
cubemall-product
application.yml
spring:datasource:driver-class-name: com.mysql.cj.jdbc.Driverurl: jdbc:mysql://localhost:3306/cube_goods?useUnicode=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghaiusername: rootpassword: rootcloud:nacos:discovery:server-addr: 127.0.0.1:8848application:name: cubemall-product
server:port: 8081
mybatis-plus:mapper-locations: classpath:/mapper/**/*.xmlglobal-config:db-config:id-type: auto
CubemallProductApplication.java
package com.xd.cubemall.product;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;@SpringBootApplication
@EnableDiscoveryClient
public class CubemallProductApplication {public static void main(String[] args) {SpringApplication.run(CubemallProductApplication.class, args);}}
cubemall-gateway
Spring Cloud Routing->Gateway
spring.cloud.nacos.discovery.server-addr 来指定 Nacos 的服务发现地址。然而,对于配置中心,应该使用 spring.cloud.nacos.config.server-addr。这两个配置项的作用是不同的:
spring.cloud.nacos.discovery.server-addr 用于服务注册与发现。
spring.cloud.nacos.config.server-addr 用于配置中心,即从中获取应用的配置信息。
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
如果不解决这个问题,应用将无法从 Nacos 配置中心获取配置信息,这可能导致应用启动失败或运行时缺少必要的配置。
既然在 Nacos 的服务管理界面看到了 cubemall-gateway,这意味着服务注册部分是没有问题的,问题主要出在配置获取上。添加或修正上述配置项后,应用应该能够正确地从 Nacos 配置中心获取配置,并解决当前的启动错误