02、Sentinel实战：SpringCloud集成Sentinel及简单流控示例-程序员江小北

集成

1、创建一个父工程引入相关boot，cloud，alibaba依赖；

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!--Spring-->
        <spring.boot.version>2.3.4.RELEASE</spring.boot.version>
        <spring.cloud.version>Hoxton.SR8</spring.cloud.version>
        <spring.platform.version>Cairo-SR8</spring.platform.version>
        <spring.cloud.alibaba.version>2.2.2.RELEASE</spring.cloud.alibaba.version>
    </properties>
        <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring.cloud.alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring.boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

1、子项目添加pom；

    <dependencies>
        <!--启动依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--test包-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--sentinel-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
        </dependency>
    </dependencies>

1、创建一个测试类；

2、 YML加入sentinel配置；

server:
  port: 10000
spring:
  application:
    name: pearl-test-sentinel
  cloud:
    sentinel:
      transport:
        port: 8719
        dashboard: localhost:8080

1、启动项目，并访问测试接口，之后查看控制台；

简单流控规则示例

1、找到测试接口；

2、添加控制规则，此规则表示当前QPS限制为1![*][nbsp3]；
3、快速刷新当前页面，发现已被限流；