✨ 发现服务信息

cloud-demo/ReadMe.md

@@ -237,3 +237,31 @@ networks: # 定义网络
     driver: bridge  # 使用 bridge 驱动（默认）
 ```
 
+## 注册中心
+
+### 服务发现
+
+发现服务信息。
+
+```java
+for (String service : discoveryClient.getServices()) {
+    System.out.println(service);
+
+    for (ServiceInstance instance : discoveryClient.getInstances(service)) {
+        System.out.println("IP地址：" + instance.getHost());
+        System.out.println("端口号" + instance.getPort());
+    }
+}
+
+System.out.println("----------------------------------------------");
+
+// 两个方式一样，DiscoveryClient 是 Spring自带的 NacosDiscoveryClient是 Nacos
+for (String service : nacosDiscoveryClient.getServices()) {
+    System.out.println(service);
+
+    for (ServiceInstance instance : nacosDiscoveryClient.getInstances(service)) {
+        System.out.println("IP地址：" + instance.getHost());
+        System.out.println("端口号" + instance.getPort());
+    }
+}
+```

cloud-demo/pom.xml

@@ -48,12 +48,7 @@
                 <version>${junit.version}</version>
                 <scope>test</scope>
             </dependency>
-            <dependency>
-                <groupId>org.springframework.boot</groupId>
-                <artifactId>spring-boot-starter-test</artifactId>
-                <scope>test</scope>
-            </dependency>
-
+    
             <!-- spring-cloud-alibaba -->
             <dependency>
                 <groupId>com.alibaba.cloud</groupId>

cloud-demo/services/pom.xml

@@ -37,6 +37,11 @@
         </dependency>
 
         <!-- test -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
         <dependency>
             <groupId>junit</groupId>
             <artifactId>junit</artifactId>

cloud-demo/services/service-order/src/main/java/cn/bunny/service/OrderServiceApplication.java

@@ -2,8 +2,10 @@ package cn.bunny.service;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
 
 @SpringBootApplication
+@EnableDiscoveryClient
 public class OrderServiceApplication {
     public static void main(String[] args) {
         SpringApplication.run(OrderServiceApplication.class, args);

cloud-demo/services/service-order/src/test/java/cn/bunny/service/DiscoveryTest.java

@@ -0,0 +1,42 @@
+package cn.bunny.service;
+
+import com.alibaba.cloud.nacos.discovery.NacosDiscoveryClient;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.cloud.client.ServiceInstance;
+import org.springframework.cloud.client.discovery.DiscoveryClient;
+
+@SpringBootTest()
+public class DiscoveryTest {
+
+    @Autowired
+    private DiscoveryClient discoveryClient;
+
+    @Autowired
+    private NacosDiscoveryClient nacosDiscoveryClient;
+
+    @Test
+    void discoveryClientTest() {
+        for (String service : discoveryClient.getServices()) {
+            System.out.println(service);
+
+            for (ServiceInstance instance : discoveryClient.getInstances(service)) {
+                System.out.println("IP地址：" + instance.getHost());
+                System.out.println("端口号" + instance.getPort());
+            }
+        }
+
+        System.out.println("----------------------------------------------");
+
+        // 两个方式一样，DiscoveryClient 是 Spring自带的 NacosDiscoveryClient是 Nacos
+        for (String service : nacosDiscoveryClient.getServices()) {
+            System.out.println(service);
+
+            for (ServiceInstance instance : nacosDiscoveryClient.getInstances(service)) {
+                System.out.println("IP地址：" + instance.getHost());
+                System.out.println("端口号" + instance.getPort());
+            }
+        }
+    }
+}

cloud-demo/services/service-product/src/main/java/cn/bunny/service/ProductServiceApplication.java

@@ -2,8 +2,10 @@ package cn.bunny.service;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
 
 @SpringBootApplication
+@EnableDiscoveryClient
 public class ProductServiceApplication {
     public static void main(String[] args) {
         SpringApplication.run(ProductServiceApplication.class, args);