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SpringBoot Nacos实现自动刷新

目录
  • 背景
  • 现象
  • 优化

背景

SpringBoot 版本

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.6.4</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

Nacos 版本

<dependencies>   
	 ...
	<!--nacos-->
	<dependency>
	    <groupId>com.alibaba.cloud</groupId>
	    <artifactId>spring-cl编程客栈oud-starter-alibaba-nacos-config</artifactId>
	    <version>2.2.6.RELEASE</version>
	</dependency>
</dependencies>

Spring-ClcYgKTWuECoud 版本

spring-cloud-alibaba依赖,能对nacos进行版本管理

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2.2.6.RELEASE</version>
            <type>pom</type>
        开发者_Go入门    <scope>import</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>2021.0.1</version>
   www.devze.com         <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

application.yml 配置

  • server-addr:nacos地址
  • namespace:命名空间,即 id
  • group:标识分组
  • file-extension:文件后缀名

spring:

  cloud:

    nacos:

      config:

        server-addr: http://xxx.com

        namespace: name

        group: name

        file-extension: yml

现象

application.yml 配置 myvalue 的值

myvalue: myvalue-test

接口类引用 myvalue

@RestController
@Slf4j
public class TestController extends BaseController {
    @Value("${myvalue}")
    private String myvalue;
    @ApiOperation(value = "测试", notes = "测试value")
    @GetMapping(value = "/test/feng/test")
    NjcResponseEntity testValue() {
        log.info( myvalue);
        return super.success("查询", myvalue);
    }
}

在线修 nacos 上 myvalue 的值

后台可以看到 myvalue 已被修改

2023-01-10 10:56:03.402  WARN  [TID: N/A]  c.a.c.n.c.NacosPropertySourceBuilder:  Ignore the empty nacos configuration and get it based on dataId[pm] & group[pm]

2023-01-10 10:56:03.407  WARN  [TID: N/A]  c.a.c.n.c.NacosPropertySourceBuilder:  Ignore the empty nacos configuration and get it based on dataId[pm.yml] & group[pm]

2023-01-10 10:56:03.415  INFO  [TID: N/A]  o.s.c.b.c.PropertySourceBootstrapConfiguration:  Located property source: [BootstrapPropertySource {name='bootstrapProperties-pm-feng.yml,pm'}, BootstrapPropertySource {name='bpythonootstrapProperties-pm.yml,pm'}, BootstrapPropertySource {name='bootstrapProperties-pm,pm'}]

2023-01-10 10:56:03.417  INFO  [TID: N/A]  o.s.boot.SpringApplication:  The following 1 profile is active: "feng"

2023-01-10 10:56:03.425  INFO  [TID: N/A]  o.s.boot.SpringApplication:  Started application in 0.227 seconds (JVM runninpythong for 38.127)

Logging initialized using 'class org.apache.iBATis.logging.stdout.StdOutImpl' adapter.

2023-01-10 10:56:03.508  INFO  [TID: N/A]  o.s.c.e.event.RefreshEventListener:  Refresh keys changed: [myvalue]

但通过接口获取 myvalue 的值并没有改变

优化

如何修改为自动更新,加上注解 @RefreshScope 即可

@RestController
@Slf4j
@RefreshScope
public class TestController extends BaseController {
    @Value("${myvalue}")
    private String myvalue;
    @ApiOperation(value = "测试", notes = "测试value")
    @GetMapping(value = "/test/feng/test")
    NjcResponseEntity testValue() {
        log.info( myvalue);
        return super.success("查询", myvalue);
    }
}

到此这篇关于SpringBoot Nacos实现自动刷新的文章就介绍到这了,更多相关SpringBoot Nacos刷新内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!

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