SpringCloudAlibaba-15-sentinel规则持久化-nacos

1.引入依赖

<dependency>
    <groupId>com.alibaba.csp</groupId>
    <artifactId>sentinel-datasource-nacos</artifactId>
    <version>1.7.0</version>
</dependency>

2.application.yml添加配置

server:
  port: 18080
spring:
  application:
    name: sentinel-core-example
  cloud:
    sentinel:
      transport:
        dashboard: 127.0.0.1:8080
      datasource:
        ds1:
          file:
            file: classpath:flowrule.json
            data-type: json
            rule-type: flow
        ds2:
          nacos:
            server-addr: 127.0.0.0.1:8848
            dataId: sentinel-core-example
            groupId: DEFAULT_GROUP
            data-type: json
            rule-type: flow
```  


#### 3.启动nacos  
重启nacos,然后创建sentinel-core-example配置文件  
![](https://raw.githubusercontent.com/startshineye/img/master/2020/02/33.png)  

HellController添加:

@GetMapping(“/resource1”)
@SentinelResource(value = “hello2”, blockHandler = “exHandler”, blockHandlerClass = {ExceptionUtil.class})
public String resource1() {
return “hello resource1”;
}
```