当前环境 是已经创建了一个服务提供者 一个服务消费者 并配置了nacos注册中心 利用Openfeign实现了远程微服务调用
安装Sentinel控制台并启动 java -jar jar包名称
默认是 http:locahost:8080 账号和密码都是：sentinel 因为是懒加载所以需要访问一次服务提供者的接口 才能在控制台看到此服务 目前我已经加载过了
创建服务提供者
maven添加依赖
<dependencies>
<!-- Nacos 注册中心相关依赖-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.csp</groupId>
<artifactId>sentinel-datasource-nacos</artifactId>
</dependency>
<!-- Sentinel 相关依赖-->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
</dependency>
<!-- Openfeign 远程调用相关依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>4.6.3</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
application.yml配置连接nacos注册中心和sentinel相关信息
server:
port: 8401
#配置链接 nacos注册中心
#配置连接 sentinel去监控当前服务
spring:
application:
name: cloudalibaba-sentinel-service #nacos中心会自动将此应用名称 读成服务提供者的名字
cloud:
nacos:
discovery:
server-addr: localhost:8848 #nacos注册中心的连接地址
sentinel:
transport:
dashboard: localhost:8080
port: 8719 #默认8719，应用与Sentinel控制台交互的端口，应用本地会起一个该端口占用HttpServer
management:
endpoints:
web:
exposure:
include: '*' #设置匹配的路径规则
app启动类新增注解将当前服务注册到nacos注册中心
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
//将当前服务提供者 注册到注册中心
@EnableDiscoveryClient
public class PaymentMain9001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain9001.class,args);
}
}
controller层创建两个接口 测试降级 流簇等功能
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class PaymentController {
@Value("${server.port}")
private String serverPort;
@GetMapping(value = "/payment/nacos/{id}")
public String getPayment(@PathVariable("id") Long id) {
return "nacos registry, serverPort: "+ serverPort+"\t id"+id;
}
}
