Nacos - 中间件 | Li = 人生当苦, 良人当归

# 配置中心

# 1. 添加依赖

<dependency>  
    <groupId>com.alibaba.boot</groupId>  
    <artifactId>nacos-config-spring-boot-starter</artifactId>  
    <version>0.2.1</version>  
</dependency>

# 2. 启动类注解 @NacosPropertySource

@SpringBootApplication  
// dataId 对应配置管理-配置列表-dataId
@NacosPropertySource(dataId = "nacosDemo", autoRefreshed = true)  
public class NacosDemoApplication {  
  
    public static void main(String[] args) {  
        SpringApplication.run(NacosDemoApplication.class, args);  
    }  
  
}

# 3. 配置 nacos 地址

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spring:  
    application:  
        name: nacos-demo

# 4. 使用配置

@RestController  
public class CacheController {  
  
   @NacosValue(value = "${useLocalCache:false}", autoRefreshed = true)  
   private boolean useLocalCache;  
  
   private static final String template = "useLocalCache is %s!";  
  
   @GetMapping("/cache")  
   public String cache() {  
      // 默认返回false
      return String.format(template, useLocalCache);  
   }  
}
// 此时返回结果 ：useLocalCache is false!