Seata 整合学习完成

user-service/pom.xml

@@ -20,7 +20,7 @@
     <dependencies>
         <dependency>
             <groupId>com.alibaba.cloud</groupId>
-            <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId>
+            <artifactId>spring-cloud-starter-alibaba-seata</artifactId>
         </dependency>
         <dependency>
             <groupId>org.springframework.cloud</groupId>

user-service/src/main/java/com/test/UserApplication.java

@@ -1,5 +1,6 @@
 package com.test;
 
+import io.seata.spring.annotation.datasource.EnableAutoDataSourceProxy;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
@@ -11,6 +12,7 @@ import org.springframework.boot.autoconfigure.SpringBootApplication;
  * @Create 2023/8/14 16:26
  */
 @SpringBootApplication
+@EnableAutoDataSourceProxy
 public class UserApplication {
     public static void main(String[] args) {
         SpringApplication.run(UserApplication.class, args);

user-service/src/main/java/com/test/controller/UserController.java

@@ -27,4 +27,15 @@ public class UserController {
         System.out.println("调用用户服务");
         return service.getUserById(uid);
     }
+
+    @RequestMapping("/user/remain/{uid}")
+    public int userRemain(@PathVariable("uid") int uid) {
+        return service.getRemain(uid);
+    }
+
+    @RequestMapping("/user/borrow/{uid}")
+    public boolean userBorrow(@PathVariable("uid") int uid) {
+        int remain = service.getRemain(uid);
+        return service.setRemain(uid, remain - 1);
+    }
 }

user-service/src/main/java/com/test/mapper/UserMapper.java

@@ -3,6 +3,7 @@ package com.test.mapper;
 import com.test.entity.User;
 import org.apache.ibatis.annotations.Mapper;
 import org.apache.ibatis.annotations.Select;
+import org.apache.ibatis.annotations.Update;
 
 /**
  * ClassName: UserMapper
@@ -15,4 +16,10 @@ import org.apache.ibatis.annotations.Select;
 public interface UserMapper {
     @Select("select * from DB_USER where uid = #{uid}")
     User getUserById(int uid);
+
+    @Select("select book_count from DB_USER where uid = #{uid}")
+    int getUserBookRemain(int uid);
+
+    @Update("update DB_USER set book_count = #{count} where uid = #{uid}")
+    int updateBookCount(int uid, int count);
 }

user-service/src/main/java/com/test/service/UserService.java

@@ -11,4 +11,8 @@ import com.test.entity.User;
  */
 public interface UserService {
     User getUserById(int uid);
+
+    int getRemain(int uid);
+
+    boolean setRemain(int uid, int count);
 }

user-service/src/main/java/com/test/service/impl/UserServiceImpl.java

@@ -24,4 +24,15 @@ public class UserServiceImpl implements UserService {
     public User getUserById(int uid) {
         return mapper.getUserById(uid);
     }
+
+    @Override
+    public int getRemain(int uid) {
+        return mapper.getUserBookRemain(uid);
+    }
+
+    @Override
+    public boolean setRemain(int uid, int count) {
+        return mapper.updateBookCount(uid, count) > 0;
+    }
+
 }

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

@@ -4,8 +4,20 @@ spring:
       discovery:
         # 配置Nacos注册中心地址
         server-addr: localhost:8848
-        namespace: dd668135-0bfe-489f-ab2b-24aefb21d156
-    sentinel:
-      transport:
-        # 添加监控页面地址即可
-        dashboard: localhost:8858
+seata:
+  # 注册
+  registry:
+    # 使用Nacos
+    type: nacos
+    nacos:
+      # 使用Seata的命名空间，这样才能正确找到Seata服务，由于组使用的是SEATA_GROUP，配置默认值就是，就不用配了
+      namespace: c0495138-b5b3-440d-8f1c-dc8cc9ba5fbc
+      username: nacos
+      password: nacos
+  # 配置
+  config:
+    type: nacos
+    nacos:
+      namespace: c0495138-b5b3-440d-8f1c-dc8cc9ba5fbc
+      username: nacos
+      password: nacos