SpringCloudAlibaba + Nacos整合完成

borrow-service/pom.xml

@@ -18,6 +18,19 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-openfeign</artifactId>
+        </dependency>
+        <!-- 这里需要单独导入LoadBalancer依赖 -->
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-loadbalancer</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba.cloud</groupId>
+            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>

borrow-service/src/main/java/com/test/BorrowApplication.java

@@ -2,6 +2,7 @@ package com.test;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.openfeign.EnableFeignClients;
 
 /**
  * ClassName: BorrowApplication
@@ -10,6 +11,7 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
  * @author yovinchen
  * @Create 2023/8/14 16:25
  */
+@EnableFeignClients
 @SpringBootApplication
 public class BorrowApplication {
     public static void main(String[] args) {

borrow-service/src/main/java/com/test/service/client/BookClient.java

@@ -0,0 +1,20 @@
+package com.test.service.client;
+
+import com.test.entity.Book;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+/**
+ * ClassName: BookClient
+ * Package: com.test.service.client
+ *
+ * @author yovinchen
+ * @Create 2023/8/16 10:55
+ */
+@FeignClient("bookservice")
+public interface BookClient {
+
+    @RequestMapping("/book/{bid}")
+    Book getBookById(@PathVariable("bid") int bid);
+}

borrow-service/src/main/java/com/test/service/client/UserClient.java

@@ -0,0 +1,20 @@
+package com.test.service.client;
+
+import com.test.entity.User;
+import org.springframework.cloud.openfeign.FeignClient;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+/**
+ * ClassName: UserClient
+ * Package: com.test.service.client
+ *
+ * @author yovinchen
+ * @Create 2023/8/16 10:55
+ */
+@FeignClient("userservice")
+public interface UserClient {
+
+    @RequestMapping("/user/{uid}")
+    User getUserById(@PathVariable("uid") int uid);
+}

borrow-service/src/main/java/com/test/service/impl/BorrowServiceImpl.java

@@ -1,15 +1,15 @@
 package com.test.service.impl;
 
 
-
 import com.test.entity.Book;
 import com.test.entity.Borrow;
 import com.test.entity.User;
 import com.test.entity.UserBorrowDetail;
 import com.test.mapper.BorrowMapper;
 import com.test.service.BorrowService;
+import com.test.service.client.BookClient;
+import com.test.service.client.UserClient;
 import org.springframework.stereotype.Service;
-import org.springframework.web.client.RestTemplate;
 
 import javax.annotation.Resource;
 import java.util.List;
@@ -28,16 +28,20 @@ public class BorrowServiceImpl implements BorrowService {
     @Resource
     BorrowMapper mapper;
 
+    @Resource
+    UserClient userClient;
+
+    @Resource
+    BookClient bookClient;
+
     @Override
     public UserBorrowDetail getUserBorrowDetailByUid(int uid) {
         List<Borrow> borrow = mapper.getBorrowsByUid(uid);
-        //RestTemplate支持多种方式的远程调用
-        RestTemplate template = new RestTemplate();
-        //这里通过调用getForObject来请求其他服务，并将结果自动进行封装
-        //获取User信息
-        User user = template.getForObject("http://localhost:8101/user/" + uid, User.class);
-        //获取每一本书的详细信息
-        List<Book> bookList = borrow.stream().map(b -> template.getForObject("http://localhost:8201/book/" + b.getBid(), Book.class)).collect(Collectors.toList());
+        User user = userClient.getUserById(uid);
+        List<Book> bookList = borrow
+                .stream()
+                .map(b -> bookClient.getBookById(b.getBid()))
+                .collect(Collectors.toList());
         return new UserBorrowDetail(user, bookList);
     }
 }

borrow-service/src/main/resources/application.yml

@@ -6,3 +6,11 @@ spring:
     url: jdbc:mysql://43.143.164.194:3306/mac
     username: mac
     password: mactest
+  # 应用名称 borrowservice
+  application:
+    name: borrowservice
+  cloud:
+    nacos:
+      discovery:
+        # 配置Nacos注册中心地址
+        server-addr: localhost:8848