根据公司要求,需要将项目集成到nacos中,当前项目是基于若依前后端分离版开发的,若依的版本为3.8.3,若依框架中整合的springBoot版本为2.5.14。Nacos核心提供两个功能:服务注册与发现,动态配置管理。
一、服务注册与发现
1、引入pom依赖
</dependency>-->
<!-- 在SpringBoot 2.4.x的版本之后,对配置文件加载方式进行了重构,需要导入如下的依赖;
详情见官网:https://docs.spring.io/spring-cloud-config/docs/current/reference/html/#config-first-bootstrap -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
<version>3.0.1</version>
</dependency>
<!-- 服务注册与发现依赖 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2021.1</version>
</dependency>
2、bootstrap.yml配置
spring:
# nacos配置
cloud:
nacos:
discovery:
server-addr: 10.2.XX.XX:8848
compatibility-verifier:
enabled: false
3、添加注解
在项目启动类上添加 @EnableDiscoveryClient 注解:
@EnableDiscoveryClient
@SpringBootApplication(exclude = { DataSourceAutoConfiguration.class })
public class RiskExamineApplication
{
public static void main(String[] args)
{
// System.setProperty("spring.devtools.restart.enabled", "false");
SpringApplication.run(RiskExamineApplication.class, args);
System.out.println("(♥◠‿◠)ノ゙ 若依启动成功 ლ(´ڡ`ლ)゙ \n" +
" .-------. ____ __ \n" +
" | _ _ \\ \\ \\ / / \n" +
" | ( ' ) | \\ _. / ' \n" +
" |(_ o _) / _( )_ .' \n" +
" | (_,_).' __ ___(_ o _)' \n" +
" | |\\ \\ | || |(_,_)' \n" +
" | | \\ `' /| `-' / \n" +
" | | \\ / \\ / \n" +
" ''-' `'-' `-..-' ");
}
}
4、验证
项目启动后,登录nacos,在服务列表中,点击查询即可看到注册到nacos的服务,如下图:
服务名默认为yml配置里spring.application.name的名称,也可通过spring.cloud.nacos.discovery.service配置指定。
遇到问题:Your project setup is incompatible with our requirements due to following reasons:
- Spring Boot [2.5.14] is not compatible with this Spring Cloud release train
Change Spring Boot version to one of the following versions [2.3.x, 2.4.x]
***************************
APPLICATION FAILED TO START
***************************
Description:
Your project setup is incompatible with our requirements due to following reasons:
- Spring Boot [2.5.14] is not compatible with this Spring Cloud release train
Action:
Consider applying the following actions:
- Change Spring Boot version to one of the following versions [2.3.x, 2.4.x] .
You can find the latest Spring Boot versions here [https://spring.io/projects/spring-boot#learn].
If you want to learn more about the Spring Cloud Release train compatibility, you can visit this page [https://spring.io/projects/spring-cloud#overview] and check the [Release Trains] section.
If you want to disable this check, just set the property [spring.cloud.compatibility-verifier.enabled=false]
解决办法:出现这个问题是由于springBoot和springCloud版本不一致导致的,如果是自己手动搭建的框架,可以根据提示将springBoot版本降到[2.3.x, 2.4.x];但是由于我用的是若依的框架,担心将springBoot版本降低后会引起其它问题,所以根据提示设置spring.cloud.compatibility-verifier.enabled=false这个属性,但是引入后发现配置不生效,最后根据研究一番之后,根据网上的提示需将配置文件名称application.yml改为bootstrap.yml,然后再引入依赖spring-cloud-starter-bootstrap 即可解决。
注意:如果只需要nacos的服务注册与发现功能,不用服务配置功能的话,一定要将服务配置的pom依赖(spring-cloud-starter-alibaba-nacos-config)去掉,否则启动时会报错:currentServerAddr:http://localhost:8848, err : connect timed out 。
二、服务动态配置与服务注册发现
1、引入pom依赖
<!-- nacos -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
<version>2021.1</version>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-bootstrap</artifactId>
<version>3.0.1</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2021.1</version>
</dependency>
2、bootstrap.yml配置
spring:
cloud:
nacos:
discovery:
server-addr: 124.70.XX.XX:32389
namespace: zs-smart
group: dev
config:
server-addr: 124.70.XX.XX:32389
namespace: zs-smart
group: dev
name: zs-smart
file-extension: yaml
compatibility-verifier:
enabled: false
3、nacos配置
1)新建命名空间
2) 新建配置
打开配置列表,选择刚刚创建的zs-smart,点击右上角的“+”号,如下图:
3)填写配置
然后启动项目,如果项目启动成功,即说明配置没问题! 文章来源:https://www.toymoban.com/news/detail-410928.html
参考文章:Springboot集成Nacos2「服务注册与发现」 - 知乎文章来源地址https://www.toymoban.com/news/detail-410928.html
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