Sentinel+Nacos+SpringCloud流量控制实现

小灰灰 2021-10-14 05:24 510阅读 0赞

**环境说明：**

Sentinel-1.6.0

Nacos-1.0.0

### **1.pom.xml配置** ###

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.5.RELEASE</version>
        </parent>
    	<dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring-cloud.version}</version>
                    <type>war</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
    	            <groupId>org.springframework.cloud</groupId>
    	            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
    	            <version>0.2.2.RELEASE</version>
    	             <type>pom</type>
                    <scope>import</scope>
    	        </dependency>
            </dependencies>
        </dependencyManagement>
            
    	<dependency>
    		<groupId>org.springframework.cloud</groupId>
    		<artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
    	</dependency>
    	 
    	<dependency>
    	    <groupId>com.alibaba.csp</groupId>
    	    <artifactId>sentinel-datasource-nacos</artifactId>
    	</dependency>

### 2.controller配置 ###

package com.zit.sentinel.controller;
    
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.bind.annotation.RestController;
    import com.alibaba.csp.sentinel.annotation.SentinelResource;
    
    @RestController
    @RequestMapping("webservice/sentinel")
    public class SentinelController {
    	@GetMapping("/hello")
        @SentinelResource(value="hello")// 添加注解
        public String hi(@RequestParam(value = "name", defaultValue = "nacos", required = false) String name) {
            return "hello" + name;
        }
    }

### 3.application.properties配置 ###

## sentinel配置
    # HttpServer地址
    spring.cloud.sentinel.transport.port=8719
    # SentinelDashBoard地址（通过jar启动）
    spring.cloud.sentinel.transport.dashboard=192.168.182.1:8080
    
    # sentinel datasource nacos
    spring.cloud.sentinel.datasource.ds.nacos.server-addr=localhost:8848
    spring.cloud.sentinel.datasource.ds.nacos.data-id=${spring.application.name}-sentinel
    spring.cloud.sentinel.datasource.ds.nacos.group-id=DEFAULT_GROUP
    spring.cloud.sentinel.datasource.ds.nacos.rule-type=flow

### 4.Nacos配置 ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Rhb3Rhb19ndWl3YW5n_size_16_color_FFFFFF_t_70][]

**5.启动Sentinel Dashboard**

java -jar sentinel-dashboard-1.6.0.jar

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Rhb3Rhb19ndWl3YW5n_size_16_color_FFFFFF_t_70 1][]

### 6. hello>1次/秒 ###

出现限流信息

![20190818212407992.jpg][]

代码见：[https://github.com/o99o/CAC\_SpringBoot\_Cloud\_Nacos\_Producer\_Sentinel.git][https_github.com_o99o_CAC_SpringBoot_Cloud_Nacos_Producer_Sentinel.git]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Rhb3Rhb19ndWl3YW5n_size_16_color_FFFFFF_t_70]: /images/20211013/f4ebb6bc2375480383878ef200be82cb.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3Rhb3Rhb19ndWl3YW5n_size_16_color_FFFFFF_t_70 1]: /images/20211013/787a24a4e6ed4cba81146a8892b33579.png
[20190818212407992.jpg]: /images/20211013/9bbe3df040d845eca6a6849cdb4423bb.png
[https_github.com_o99o_CAC_SpringBoot_Cloud_Nacos_Producer_Sentinel.git]: https://github.com/o99o/CAC_SpringBoot_Cloud_Nacos_Producer_Sentinel.git