Brief description

Please check the previous article for NACOS in distributedBuilt a SpringCloud-Alibaba framework。

Different distributed and monomer projects are different, and the configuration also goes out. Of course, this article does not include service registration related content, only guides the need to integrate NACOS configuration centers and dynamically configured small partners.

Download Nacos

Please click on the following URL yet to download

Nacos download point me

At present, the latest version is 1.4.1, open the connection above, and pull the compressed package at the bottom, install NACOS will not be explained. To the point

Springboot Add NACOS Dependent

Note: Version 0.2.x.release corresponds to the Spring Boot 2.x version, version 0.1.x.release corresponds to the Spring Boot 1.x version.

        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>nacos-config-spring-boot-starter</artifactId>
            <version>${your.version}</version>
        </dependency>

Configuring NACOS in Application.yml

Here is the difference between NACOS in Spring-Cloud-Alibaba.
Difference 1: Distributed in your configuration needs to be placed in bootstrap, and the monomer project is placed in the Application
Difference 2: DateID, Type, GroupId, etc. in distributed, Type, GroupID, etc. can be disposed in the bootstrap configuration file, while these points mentioned above need to be configured by adding @nacoPropertySource annotations in the startup class. The specific operation is as follows

nacos:
  config:
    server-addr: 127.0.0.1:8848
    namespace: 2e72f4cf-ca30-4a94-9659-d9e42369326e

Note: If Namespace is not configured, the default is pulled from public to PUBLIC.

Startup configuration

@SpringBootApplication
@NacosPropertySource(dataId = "examples", type = ConfigType.YAML,groupId = "test",autoRefreshed = true)
public class CheckApplication {

    public static void main(String[] args) {
        SpringApplication.run(CheckApplication.class, args);
    }
}

Corresponding NACOS page

Test data by MVC (Controller)

@RestController
public class TestController {

    @NacosValue(value = "${test.properties-version}", autoRefreshed = true)
    private String propertiesVersion;

    @GetMapping("/test/config")
    public String propertiesVersion() {
        return propertiesVersion;
    }
}

Set the value of the property, @nacosvalue and Spring @nacosvalue and Spring here

Postman test

Change NACOS configuration

Change the configuration from V1.0 to v1.1

Postman test [Do not restart the Springboot project]

Dynamic configuration

The @nacosvalue annotation has an attribute to control whether it is dynamically updated to configure autorefreeshed = true