SpringCloud Alibaba从入门到精通教程（五）- 项目中快速集成·限流组件Sentinel需求背景Tips技术点代码演示高级用法完整源码下载其他技术下一章教程该系列教程我的专栏

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我是靠谱客的博主乐观故事，最近开发中收集的这篇文章主要介绍SpringCloud Alibaba从入门到精通教程（五）- 项目中快速集成·限流组件Sentinel需求背景Tips技术点代码演示高级用法完整源码下载其他技术下一章教程该系列教程我的专栏，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

需求背景

项目中快速集成·限流组件Sentinel

Tips技术点

1. 引入spring-cloud-starter-alibaba-sentinel依赖包

注：默认监控所有访问接口

代码演示

1. 项目目录结构

2. pom.xml依赖组件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
	<modelVersion>4.0.0</modelVersion>

	<artifactId>microservice-alibaba-sentinel</artifactId>
	<packaging>jar</packaging>

	<parent>
		<groupId>com.minbo.cloud.alibaba</groupId>
		<artifactId>spring-cloud-alibaba-study-parent</artifactId>
		<version>0.0.1-SNAPSHOT</version>
	</parent>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger2</artifactId>
		</dependency>
		<dependency>
			<groupId>io.springfox</groupId>
			<artifactId>springfox-swagger-ui</artifactId>
		</dependency>
		<dependency>
			<groupId>com.github.xiaoymin</groupId>
			<artifactId>swagger-bootstrap-ui</artifactId>
		</dependency>
		<dependency>
			<groupId>net.sf.json-lib</groupId>
			<artifactId>json-lib-ext-spring</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
		</dependency>
	</dependencies>
</project>

3. bootstrap.yaml配置文件

配置sentinel

spring:
   application:
      name: microservice-alibaba-sentinel
   profiles:
      active: dev
   cloud:
      nacos:
         discovery:
            server-addr: 127.0.0.1:8848
            namespace: 2bc5565f-453f-4b1c-bde4-eafe23bdb2f0
         config:
            server-addr: 127.0.0.1:8848
            namespace: 2bc5565f-453f-4b1c-bde4-eafe23bdb2f0
            file-extension: properties
            shared-dataids: microservice-alibaba-sentinel.properties
            refreshable-dataids: microservice-alibaba-sentinel.properties
      sentinel:
         transport:
            port: 8719 # 默认数据端口
            dashboard: 127.0.0.1:9191
# server
server:
   port: 9092

对Nacos配置不熟，可以先阅读下面两篇文章

SpringCloud Alibaba从入门到精通教程（二）- 项目中快速集成配置中心·Nacos服务注册发现功能
SpringCloud Alibaba从入门到精通教程（三）- 项目中快速集成配置中心·Nacos配置中心管理功能

4. 接口类

package com.minbo.cloud.alibaba.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;

/**
 * @author Minbo
 */
@RestController
@Slf4j
@Api(tags = { "init" })
public class InitController {

	@ApiOperation(value = "欢迎入口", httpMethod = "GET")
	@GetMapping("/hello")
	public String hello() {
		log.info("microservice-alibaba-sentinel");
		return "Hello, greetings from microservice-alibaba-sentinel";
	}
}

5. 启动类

package com.minbo.cloud.alibaba;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

import com.github.xiaoymin.swaggerbootstrapui.annotations.EnableSwaggerBootstrapUI;

/**
 * 程序主入口
 * 
 * @author Minbo
 *
 */
@SpringBootApplication
@EnableSwaggerBootstrapUI
@EnableDiscoveryClient
public class Application {

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

}