1、nacos配置

新增文件gdebs-gateway-sentinel.yml、gdebs-gateway-sentinel-dynamic.properties

spring:cloud:sentinel:eager: true#配置網關scg:fallback:content-type: application/json# 模式 response、redirectmode: response# 響應狀態碼response-status: ${sentinel.renturn.code}# 響應信息response-body: ${sentinel.renturn.msg}transport:dashboard: ${sentinel.dashboard.host}:${sentinel.dashboard.port}filter:enabled: falseip: gdebs-gateway-service# 控制臺數據持久化配置datasource:ds1:nacos:server-addr: ${sentinel.nacos.host}:${sentinel.nacos.port}username: ${sentinel.nacos.name}password: ${sentinel.nacos.pwd}namespace: ${sentinel.nacos.namespace}group-id: ${sentinel.nacos.group}data-id: ${spring.application.name}-sentinel-flow-rules.jsondata-type: jsonrule-type: gw-flowds2:nacos:server-addr: ${sentinel.nacos.host}:${sentinel.nacos.port}username: ${sentinel.nacos.name}password: ${sentinel.nacos.pwd}namespace: ${sentinel.nacos.namespace}group-id: ${sentinel.nacos.group}data-id: ${spring.application.name}-sentinel-api-rules.jsondata-type: jsonrule-type: gw-api-groupgateway:# spring cloud gateway 路由配置方式discovery:locator:#表明gateway開啟服務注冊和發現的功能enabled: true#將請求路徑上的服務名配置為小寫lower-case-service-id: true

# sentinel控制臺信息
sentinel.dashboard.host=xxxx
sentinel.dashboard.port=xxx# sentinel返回信息
sentinel.renturn.msg= 對不起，已經被限流了！！！
sentinel.renturn.code= xxx# sentinel數據持久化配置
sentinel.nacos.host=xxx.xx.xx.xx
sentinel.nacos.port=xxxx
sentinel.nacos.name=xx
sentinel.nacos.pwd=nacxxos
sentinel.nacos.namespace=xxx
sentinel.nacos.group=xxx
spring.application.name=xxx

<dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-datasource-nacos</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-sentinel</artifactId></dependency><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-alibaba-sentinel-gateway</artifactId></dependency><dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-spring-cloud-gateway-adapter</artifactId></dependency>

<dependency><groupId>com.alibaba.csp</groupId><artifactId>sentinel-core</artifactId><version>1.8.6</version>
</dependency>

@RestController
@RequestMapping(value = "/sentinel")
@Api(value = "sentinel", tags = {"testController"})
public class TestController {@SentinelResource(value = "tesSentinel" , blockHandler = "myBlockHander")@PostMapping("/tesSentinel")public String tesSentinel() {return "1";}// 限流或者熔斷之后執行的方法public String myBlockHander(BlockException blockException){if(blockException instanceof FlowException){// 限流異常return "您被限流了";}else if(blockException instanceof DegradeException){// 熔斷異常return "您被熔斷了";}return "被限制了";}
}

private void initFlowQpsRule() {List<FlowRule> rules=new ArrayList<>();System.out.println("限流初始化規則");// 定義一個限流規則FlowRule flowRule=new FlowRule();flowRule.setResource("tesSentinel"); // 資源名|必須參數flowRule.setGrade(RuleConstant.FLOW_GRADE_QPS); // 限流指標：QPS/線程數 |必須參數flowRule.setCount(1);  // 限流數量（上一步 QPS 或線程數的值） |必須參數flowRule.setStrategy(RuleConstant.STRATEGY_DIRECT); //調用關系限流策略【非必須設置】flowRule.setControlBehavior(RuleConstant.CONTROL_BEHAVIOR_RATE_LIMITER); // 流控效果【非必須設置】 排隊等待flowRule.setMaxQueueingTimeMs(1000); // 等待超時時間flowRule.setClusterMode(false); // 是否集群限流【非必須設置，默認非集群】rules.add(flowRule);FlowRuleManager.loadRules(rules);}