更改负载均衡（改为随机）

borrow-service/src/main/java/com/test/config/BeanConfig.java

@@ -1,6 +1,7 @@
 package com.test.config;
 
 import org.springframework.cloud.client.loadbalancer.LoadBalanced;
+import org.springframework.cloud.loadbalancer.annotation.LoadBalancerClient;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.client.RestTemplate;
@@ -13,10 +14,12 @@ import org.springframework.web.client.RestTemplate;
  * @Create 2023/8/15 10:08
  */
 @Configuration
+@LoadBalancerClient(value = "userservice",      //指定为 userservice 服务，只要是调用此服务都会使用我们指定的策略
+        configuration = LoadBalancerConfig.class)   //指定我们刚刚定义好的配置类
 public class BeanConfig {
     @Bean
     @LoadBalanced
-    RestTemplate template(){
+    RestTemplate template() {
         return new RestTemplate();
     }
 }

borrow-service/src/main/java/com/test/config/LoadBalancerConfig.java

@@ -0,0 +1,25 @@
+package com.test.config;
+
+import org.springframework.cloud.client.ServiceInstance;
+import org.springframework.cloud.loadbalancer.core.RandomLoadBalancer;
+import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
+import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
+import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.core.env.Environment;
+
+/**
+ * ClassName: LoadBalancerConfig
+ * Package: com.test.config
+ *
+ * @author yovinchen
+ * @Create 2023/8/15 16:46
+ */
+public class LoadBalancerConfig {
+    //将官方提供的 RandomLoadBalancer 注册为Bean
+    @Bean
+    public ReactorLoadBalancer<ServiceInstance> randomLoadBalancer(Environment environment, LoadBalancerClientFactory loadBalancerClientFactory){
+        String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);
+        return new RandomLoadBalancer(loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class), name);
+    }
+}