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增加 spring cloud alibaba seata 示例

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YunaiV
2020-04-05 23:13:58 +08:00
parent 80d478d2d0
commit 5e96f4f7d1
30 changed files with 1009 additions and 3 deletions
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6
labx-07/labx-07-sca-dubbo-demo01/labx-07-sca-dubbo-demo01-consumer/pom.xml
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@@ -20,9 +20,9 @@
</properties>
<!--
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
<dependencyManagement>
<dependencies>
<dependency>

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service-api/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>labx-17-sca-seata-at-dubbo-demo</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo-order-service-api</artifactId>
</project>

19
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service-api/src/main/java/cn/iocoder/springboot/lab53/orderservice/api/OrderService.java Normal file
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package cn.iocoder.springboot.lab53.orderservice.api;
/**
* 订单 Service
*/
public interface OrderService {
/**
* 创建订单
*
* @param userId 用户编号
* @param productId 产品编号
* @param price 价格
* @return 订单编号
* @throws Exception 创建订单失败，抛出异常
*/
Integer createOrder(Long userId, Long productId, Integer price) throws Exception;
}

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo-order-service</artifactId>
<dependencies>
<dependency>
<groupId>cn.iocoder.springboot.labs</groupId>
<artifactId>labx-17-sca-seata-at-dubbo-demo-order-service-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>cn.iocoder.springboot.labs</groupId>
<artifactId>labx-17-sca-seata-at-dubbo-demo-account-service-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>cn.iocoder.springboot.labs</groupId>
<artifactId>labx-17-sca-seata-at-dubbo-demo-product-service-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- 实现对 Spring MVC 的自动化配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 实现对数据库连接池的自动化配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency> <!-- 本示例，我们使用 MySQL -->
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<!-- 实现对 MyBatis 的自动化配置 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<!-- 实现对 Seata 的自动化配置 -->
<dependency>
<groupId>io.seata</groupId>
<artifactId>seata-spring-boot-starter</artifactId>
<version>1.1.0</version>
</dependency>
<!-- 引入 Dubbo 的依赖 -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<version>2.7.4.1</version>
</dependency>
<!-- 实现对 Dubbo 的自动化配置 -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.4.1</version>
</dependency>
<!-- 实现 Dubbo 使用 Nacos 作为注册中心 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo-registry-nacos</artifactId>
<version>2.7.6</version>
</dependency>
</dependencies>
</project>

13
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/java/cn/iocoder/springboot/lab53/orderservice/OrderServiceApplication.java Normal file
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package cn.iocoder.springboot.lab53.orderservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class OrderServiceApplication {
public static void main(String[] args) {
SpringApplication.run(OrderServiceApplication.class, args);
}
}

29
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/java/cn/iocoder/springboot/lab53/orderservice/controller/OrderController.java Normal file
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package cn.iocoder.springboot.lab53.orderservice.controller;
import cn.iocoder.springboot.lab53.orderservice.api.OrderService;
import org.apache.dubbo.config.annotation.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping("/order")
public class OrderController {
private Logger logger = LoggerFactory.getLogger(OrderController.class);
@Reference
private OrderService orderService;
@PostMapping("/create")
public Integer createOrder(@RequestParam("userId") Long userId,
@RequestParam("productId") Long productId,
@RequestParam("price") Integer price) throws Exception {
logger.info("[createOrder] 收到下单请求,用户:{}, 商品:{}, 价格:{}", userId, productId, price);
return orderService.createOrder(userId, productId, price);
}
}

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/java/cn/iocoder/springboot/lab53/orderservice/dao/OrderDao.java Normal file
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package cn.iocoder.springboot.lab53.orderservice.dao;
import cn.iocoder.springboot.lab53.orderservice.entity.OrderDO;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Options;
import org.springframework.stereotype.Repository;
@Mapper
@Repository
public interface OrderDao {
/**
* 插入订单记录
*
* @param order 订单
* @return 影响记录数量
*/
@Insert("INSERT INTO orders (user_id, product_id, pay_amount) VALUES (#{userId}, #{productId}, #{payAmount})")
@Options(useGeneratedKeys = true, keyColumn = "id", keyProperty = "id")
int saveOrder(OrderDO order);
}

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/java/cn/iocoder/springboot/lab53/orderservice/entity/OrderDO.java Normal file
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package cn.iocoder.springboot.lab53.orderservice.entity;
/**
* 订单实体
*/
public class OrderDO {
/** 订单编号 **/
private Integer id;
/** 用户编号 **/
private Long userId;
/** 产品编号 **/
private Long productId;
/** 支付金额 **/
private Integer payAmount;
public Integer getId() {
return id;
}
public OrderDO setId(Integer id) {
this.id = id;
return this;
}
public Long getUserId() {
return userId;
}
public OrderDO setUserId(Long userId) {
this.userId = userId;
return this;
}
public Long getProductId() {
return productId;
}
public OrderDO setProductId(Long productId) {
this.productId = productId;
return this;
}
public Integer getPayAmount() {
return payAmount;
}
public OrderDO setPayAmount(Integer payAmount) {
this.payAmount = payAmount;
return this;
}
}

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/java/cn/iocoder/springboot/lab53/orderservice/service/OrderServiceImpl.java Normal file
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package cn.iocoder.springboot.lab53.orderservice.service;
import cn.iocoder.springboot.lab53.accountservice.api.AccountService;
import cn.iocoder.springboot.lab53.orderservice.api.OrderService;
import cn.iocoder.springboot.lab53.orderservice.dao.OrderDao;
import cn.iocoder.springboot.lab53.orderservice.entity.OrderDO;
import cn.iocoder.springboot.lab53.storageservice.api.ProductService;
import io.seata.core.context.RootContext;
import io.seata.spring.annotation.GlobalTransactional;
import org.apache.dubbo.config.annotation.Reference;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
@org.apache.dubbo.config.annotation.Service
public class OrderServiceImpl implements OrderService {
private Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
private OrderDao orderDao;
@Reference
private AccountService accountService;
@Reference
private ProductService productService;
@Override
@GlobalTransactional
public Integer createOrder(Long userId, Long productId, Integer price) throws Exception {
Integer amount = 1; // 购买数量，暂时设置为 1。
logger.info("[createOrder] 当前 XID: {}", RootContext.getXID());
// 扣减库存
productService.reduceStock(productId, amount);
// 扣减余额
accountService.reduceBalance(userId, price);
// 保存订单
OrderDO order = new OrderDO().setUserId(userId).setProductId(productId).setPayAmount(amount * price);
orderDao.saveOrder(order);
logger.info("[createOrder] 保存订单: {}", order.getId());
// 返回订单编号
return order.getId();
}
}

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/resources/application-file.yaml Normal file
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server:
port: 8081 # 端口
spring:
application:
name: order-service
datasource:
url: jdbc:mysql://127.0.0.1:3306/seata_order?useSSL=false&useUnicode=true&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password:
# dubbo 配置项，对应 DubboConfigurationProperties 配置类
dubbo:
# Dubbo 应用配置
application:
name: ${spring.application.name} # 应用名
# Dubbo 注册中心配
registry:
address: nacos://127.0.0.1:8848 # 注册中心地址。个鞥多注册中心，可见 http://dubbo.apache.org/zh-cn/docs/user/references/registry/introduction.html 文档。
# Dubbo 服务提供者协议配置
protocol:
port: -1 # 协议端口。使用 -1 表示随机端口。
name: dubbo # 使用 `dubbo://` 协议。更多协议，可见 http://dubbo.apache.org/zh-cn/docs/user/references/protocol/introduction.html 文档
# 配置扫描 Dubbo 自定义的 @Service 注解，暴露成 Dubbo 服务提供者
scan:
base-packages: cn.iocoder.springboot.lab53.orderservice.service
# Seata 配置项，对应 SeataProperties 类
seata:
application-id: ${spring.application.name} # Seata 应用编号，默认为 ${spring.application.name}
tx-service-group: ${spring.application.name}-group # Seata 事务组编号，用于 TC 集群名
# 服务配置项，对应 ServiceProperties 类
service:
# 虚拟组和分组的映射
vgroup-mapping:
order-service-group: default
# 分组和 Seata 服务的映射
grouplist:
default: 127.0.0.1:8091

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-order-service/src/main/resources/application.yaml Normal file
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server:
port: 8081 # 端口
spring:
application:
name: order-service
datasource:
url: jdbc:mysql://127.0.0.1:3306/seata_order?useSSL=false&useUnicode=true&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password:
# dubbo 配置项，对应 DubboConfigurationProperties 配置类
dubbo:
# Dubbo 应用配置
application:
name: ${spring.application.name} # 应用名
# Dubbo 注册中心配
registry:
address: nacos://127.0.0.1:8848 # 注册中心地址。个鞥多注册中心，可见 http://dubbo.apache.org/zh-cn/docs/user/references/registry/introduction.html 文档。
# Dubbo 服务提供者协议配置
protocol:
port: -1 # 协议端口。使用 -1 表示随机端口。
name: dubbo # 使用 `dubbo://` 协议。更多协议，可见 http://dubbo.apache.org/zh-cn/docs/user/references/protocol/introduction.html 文档
# 配置扫描 Dubbo 自定义的 @Service 注解，暴露成 Dubbo 服务提供者
scan:
base-packages: cn.iocoder.springboot.lab53.orderservice.service
# Seata 配置项，对应 SeataProperties 类
seata:
application-id: ${spring.application.name} # Seata 应用编号，默认为 ${spring.application.name}
tx-service-group: ${spring.application.name}-group # Seata 事务组编号，用于 TC 集群名
# Seata 服务配置项，对应 ServiceProperties 类
service:
# 虚拟组和分组的映射
vgroup-mapping:
order-service-group: default
# Seata 注册中心配置项，对应 RegistryProperties 类
registry:
type: nacos # 注册中心类型，默认为 file
nacos:
cluster: default # 使用的 Seata 分组
namespace: # Nacos 命名空间
serverAddr: localhost # Nacos 服务地址

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service-api/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>labx-17-sca-seata-at-dubbo-demo</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo-product-service-api</artifactId>
</project>

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service-api/src/main/java/cn/iocoder/springboot/lab53/storageservice/api/ProductService.java Normal file
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package cn.iocoder.springboot.lab53.storageservice.api;
/**
* 商品 Service
*/
public interface ProductService {
/**
* 扣减库存
*
* @param productId 商品 ID
* @param amount 扣减数量
* @throws Exception 扣减失败时抛出异常
*/
void reduceStock(Long productId, Integer amount) throws Exception;
}

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labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo-product-service</artifactId>
<dependencies>
<dependency>
<groupId>cn.iocoder.springboot.labs</groupId>
<artifactId>labx-17-sca-seata-at-dubbo-demo-product-service-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- Spring Boot Starter 基础库 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!-- 实现对数据库连接池的自动化配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency> <!-- 本示例，我们使用 MySQL -->
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<!-- 实现对 MyBatis 的自动化配置 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<!-- 实现对 Seata 的自动化配置 -->
<dependency>
<groupId>io.seata</groupId>
<artifactId>seata-spring-boot-starter</artifactId>
<version>1.1.0</version>
</dependency>
<!-- 引入 Dubbo 的依赖 -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo</artifactId>
<version>2.7.4.1</version>
</dependency>
<!-- 实现对 Dubbo 的自动化配置 -->
<dependency>
<groupId>org.apache.dubbo</groupId>
<artifactId>dubbo-spring-boot-starter</artifactId>
<version>2.7.4.1</version>
</dependency>
<!-- 实现 Dubbo 使用 Nacos 作为注册中心 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>dubbo-registry-nacos</artifactId>
<version>2.7.6</version>
</dependency>
</dependencies>
</project>

13
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service/src/main/java/cn/iocoder/springboot/lab53/productservice/ProductServiceApplication.java Normal file
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package cn.iocoder.springboot.lab53.productservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class ProductServiceApplication {
public static void main(String[] args) {
SpringApplication.run(ProductServiceApplication.class, args);
}
}

33
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service/src/main/java/cn/iocoder/springboot/lab53/productservice/dao/ProductDao.java Normal file
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package cn.iocoder.springboot.lab53.productservice.dao;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.springframework.stereotype.Repository;
@Mapper
@Repository
public interface ProductDao {
/**
* 获取库存
*
* @param productId 商品编号
* @return 库存
*/
@Select("SELECT stock FROM product WHERE id = #{productId}")
Integer getStock(@Param("productId") Long productId);
/**
* 扣减库存
*
* @param productId 商品编号
* @param amount 扣减数量
* @return 影响记录行数
*/
@Update("UPDATE product SET stock = stock - #{amount} WHERE id = #{productId} AND stock >= #{amount}")
int reduceStock(@Param("productId") Long productId, @Param("amount") Integer amount);
}

48
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service/src/main/java/cn/iocoder/springboot/lab53/productservice/service/ProductServiceImpl.java Normal file
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package cn.iocoder.springboot.lab53.productservice.service;
import cn.iocoder.springboot.lab53.productservice.dao.ProductDao;
import cn.iocoder.springboot.lab53.storageservice.api.ProductService;
import io.seata.core.context.RootContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
@org.apache.dubbo.config.annotation.Service
public class ProductServiceImpl implements ProductService {
private Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
private ProductDao productDao;
@Override
@Transactional // 开启新事物
public void reduceStock(Long productId, Integer amount) throws Exception {
logger.info("[reduceStock] 当前 XID: {}", RootContext.getXID());
// 检查库存
checkStock(productId, amount);
logger.info("[reduceStock] 开始扣减 {} 库存", productId);
// 扣减库存
int updateCount = productDao.reduceStock(productId, amount);
// 扣除成功
if (updateCount == 0) {
logger.warn("[reduceStock] 扣除 {} 库存失败", productId);
throw new Exception("库存不足");
}
// 扣除失败
logger.info("[reduceStock] 扣除 {} 库存成功", productId);
}
private void checkStock(Long productId, Integer requiredAmount) throws Exception {
logger.info("[checkStock] 检查 {} 库存", productId);
Integer stock = productDao.getStock(productId);
if (stock < requiredAmount) {
logger.warn("[checkStock] {} 库存不足，当前库存: {}", productId, stock);
throw new Exception("库存不足");
}
}
}

38
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service/src/main/resources/application-file.yaml Normal file
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spring:
application:
name: product-service
datasource:
url: jdbc:mysql://127.0.0.1:3306/seata_product?useSSL=false&useUnicode=true&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password:
# dubbo 配置项，对应 DubboConfigurationProperties 配置类
dubbo:
# Dubbo 应用配置
application:
name: ${spring.application.name} # 应用名
# Dubbo 注册中心配
registry:
address: nacos://127.0.0.1:8848 # 注册中心地址。个鞥多注册中心，可见 http://dubbo.apache.org/zh-cn/docs/user/references/registry/introduction.html 文档。
# Dubbo 服务提供者协议配置
protocol:
port: -1 # 协议端口。使用 -1 表示随机端口。
name: dubbo # 使用 `dubbo://` 协议。更多协议，可见 http://dubbo.apache.org/zh-cn/docs/user/references/protocol/introduction.html 文档
# 配置扫描 Dubbo 自定义的 @Service 注解，暴露成 Dubbo 服务提供者
scan:
base-packages: cn.iocoder.springboot.lab53.productservice.service
# Seata 配置项，对应 SeataProperties 类
seata:
application-id: ${spring.application.name} # Seata 应用编号，默认为 ${spring.application.name}
tx-service-group: ${spring.application.name}-group # Seata 事务组编号，用于 TC 集群名
# 服务配置项，对应 ServiceProperties 类
service:
# 虚拟组和分组的映射
vgroup-mapping:
product-service-group: default
# 分组和 Seata 服务的映射
grouplist:
default: 127.0.0.1:8091

42
labx-17/labx-17-sca-seata-at-dubbo-demo/lab-53-seata-at-dubbo-demo-product-service/src/main/resources/application.yaml Normal file
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spring:
application:
name: product-service
datasource:
url: jdbc:mysql://127.0.0.1:3306/seata_product?useSSL=false&useUnicode=true&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password:
# dubbo 配置项，对应 DubboConfigurationProperties 配置类
dubbo:
# Dubbo 应用配置
application:
name: ${spring.application.name} # 应用名
# Dubbo 注册中心配
registry:
address: nacos://127.0.0.1:8848 # 注册中心地址。个鞥多注册中心，可见 http://dubbo.apache.org/zh-cn/docs/user/references/registry/introduction.html 文档。
# Dubbo 服务提供者协议配置
protocol:
port: -1 # 协议端口。使用 -1 表示随机端口。
name: dubbo # 使用 `dubbo://` 协议。更多协议，可见 http://dubbo.apache.org/zh-cn/docs/user/references/protocol/introduction.html 文档
# 配置扫描 Dubbo 自定义的 @Service 注解，暴露成 Dubbo 服务提供者
scan:
base-packages: cn.iocoder.springboot.lab53.productservice.service
# Seata 配置项，对应 SeataProperties 类
seata:
application-id: ${spring.application.name} # Seata 应用编号，默认为 ${spring.application.name}
tx-service-group: ${spring.application.name}-group # Seata 事务组编号，用于 TC 集群名
# Seata 服务配置项，对应 ServiceProperties 类
service:
# 虚拟组和分组的映射
vgroup-mapping:
product-service-group: default
# Seata 注册中心配置项，对应 RegistryProperties 类
registry:
type: nacos # 注册中心类型，默认为 file
nacos:
cluster: default # 使用的 Seata 分组
namespace: # Nacos 命名空间
serverAddr: localhost # Nacos 服务地址

14
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service-api/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>labx-17-sca-seata-at-dubbo-demo</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo-account-service-api</artifactId>
</project>

17
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service-api/src/main/java/cn/iocoder/springcloudalibaba/labx17/accountservice/api/AccountService.java Normal file
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package cn.iocoder.springcloudalibaba.labx17.accountservice.api;
/**
* 账户 Service
*/
public interface AccountService {
/**
* 扣除余额
*
* @param userId 用户编号
* @param price 扣减金额
* @throws Exception 失败时抛出异常
*/
void reduceBalance(Long userId, Integer price) throws Exception;
}

107
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service/pom.xml Normal file
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@@ -0,0 +1,107 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>labx-17-sca-seata-at-dubbo-demo</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo-account-service</artifactId>
<properties>
<maven.compiler.target>1.8</maven.compiler.target>
<maven.compiler.source>1.8</maven.compiler.source>
<spring.boot.version>2.2.4.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
<spring.cloud.alibaba.version>2.2.0.RELEASE</spring.cloud.alibaba.version>
</properties>
<!--
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring.cloud.alibaba.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>cn.iocoder.springboot.labs</groupId>
<artifactId>labx-17-sca-seata-at-dubbo-demo-account-service-api</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<!-- Spring Boot Starter 基础库 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<!-- 实现对数据库连接池的自动化配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency> <!-- 本示例，我们使用 MySQL -->
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<!-- 实现对 MyBatis 的自动化配置 -->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.2</version>
</dependency>
<!-- 引入 Spring Cloud Alibaba Seata 相关依赖，使用 Seata 实现分布式事务，并实现对其的自动配置 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-seata</artifactId>
</dependency>
<!-- 引入 Spring Cloud Alibaba Nacos Discovery 相关依赖，将 Nacos 作为注册中心，并实现对其的自动配置 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<!-- 引入 Spring Cloud Alibaba Dubbo 相关依赖，实现呢 Dubbo 进行远程调用，并实现对其的自动配置 -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-dubbo</artifactId>
</dependency>
</dependencies>
</project>

13
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service/src/main/java/cn/iocoder/springcloudalibaba/labx17/accountservice/AccountServiceApplication.java Normal file
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@@ -0,0 +1,13 @@
package cn.iocoder.springcloudalibaba.labx17.accountservice;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class AccountServiceApplication {
public static void main(String[] args) {
SpringApplication.run(AccountServiceApplication.class, args);
}
}

32
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service/src/main/java/cn/iocoder/springcloudalibaba/labx17/accountservice/dao/AccountDao.java Normal file
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@@ -0,0 +1,32 @@
package cn.iocoder.springcloudalibaba.labx17.accountservice.dao;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.springframework.stereotype.Repository;
@Mapper
@Repository
public interface AccountDao {
/**
* 获取账户余额
*
* @param userId 用户 ID
* @return 账户余额
*/
@Select("SELECT balance FROM account WHERE id = #{userId}")
Integer getBalance(@Param("userId") Long userId);
/**
* 扣减余额
*
* @param price 需要扣减的数目
* @return 影响记录行数
*/
@Update("UPDATE account SET balance = balance - #{price} WHERE id = 1 AND balance >= ${price}")
int reduceBalance(@Param("price") Integer price);
}

47
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service/src/main/java/cn/iocoder/springcloudalibaba/labx17/accountservice/service/AccountServiceImpl.java Normal file
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@@ -0,0 +1,47 @@
package cn.iocoder.springcloudalibaba.labx17.accountservice.service;
import cn.iocoder.springcloudalibaba.labx17.accountservice.api.AccountService;
import cn.iocoder.springcloudalibaba.labx17.accountservice.dao.AccountDao;
import io.seata.core.context.RootContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
@org.apache.dubbo.config.annotation.Service
public class AccountServiceImpl implements AccountService {
private Logger logger = LoggerFactory.getLogger(getClass());
@Autowired
private AccountDao accountDao;
@Override
@Transactional // 开启新事物
public void reduceBalance(Long userId, Integer price) throws Exception {
logger.info("[reduceBalance] 当前 XID: {}", RootContext.getXID());
// 检查余额
checkBalance(userId, price);
logger.info("[reduceBalance] 开始扣减用户 {} 余额", userId);
// 扣除余额
int updateCount = accountDao.reduceBalance(price);
// 扣除成功
if (updateCount == 0) {
logger.warn("[reduceBalance] 扣除用户 {} 余额失败", userId);
throw new Exception("余额不足");
}
logger.info("[reduceBalance] 扣除用户 {} 余额成功", userId);
}
private void checkBalance(Long userId, Integer price) throws Exception {
logger.info("[checkBalance] 检查用户 {} 余额", userId);
Integer balance = accountDao.getBalance(userId);
if (balance < price) {
logger.warn("[checkBalance] 用户 {} 余额不足，当前余额:{}", userId, balance);
throw new Exception("余额不足");
}
}
}

38
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service/src/main/resources/application-file.yaml Normal file
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@@ -0,0 +1,38 @@
spring:
application:
name: account-service
datasource:
url: jdbc:mysql://127.0.0.1:3306/seata_account?useSSL=false&useUnicode=true&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password:
# dubbo 配置项，对应 DubboConfigurationProperties 配置类
dubbo:
# Dubbo 应用配置
application:
name: ${spring.application.name} # 应用名
# Dubbo 注册中心配
registry:
address: nacos://127.0.0.1:8848 # 注册中心地址。个鞥多注册中心，可见 http://dubbo.apache.org/zh-cn/docs/user/references/registry/introduction.html 文档。
# Dubbo 服务提供者协议配置
protocol:
port: -1 # 协议端口。使用 -1 表示随机端口。
name: dubbo # 使用 `dubbo://` 协议。更多协议，可见 http://dubbo.apache.org/zh-cn/docs/user/references/protocol/introduction.html 文档
# 配置扫描 Dubbo 自定义的 @Service 注解，暴露成 Dubbo 服务提供者
scan:
base-packages: cn.iocoder.springboot.lab53.accountservice.service
# Seata 配置项，对应 SeataProperties 类
seata:
application-id: ${spring.application.name} # Seata 应用编号，默认为 ${spring.application.name}
tx-service-group: ${spring.application.name}-group # Seata 事务组编号，用于 TC 集群名
# 服务配置项，对应 ServiceProperties 类
service:
# 虚拟组和分组的映射
vgroup-mapping:
account-service-group: default
# 分组和 Seata 服务的映射
grouplist:
default: 127.0.0.1:8091

48
labx-17/labx-17-sca-seata-at-dubbo-demo/labx-17-sca-seata-at-dubbo-demo-account-service/src/main/resources/application.yaml Normal file
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@@ -0,0 +1,48 @@
spring:
application:
name: account-service
datasource:
url: jdbc:mysql://127.0.0.1:3306/seata_account?useSSL=false&useUnicode=true&characterEncoding=UTF-8
driver-class-name: com.mysql.jdbc.Driver
username: root
password:
cloud:
# Nacos 作为注册中心的配置项
nacos:
discovery:
server-addr: 127.0.0.1:8848
# dubbo 配置项，对应 DubboConfigurationProperties 配置类
dubbo:
# Dubbo 服务注册中心配置，对应 RegistryConfig 类
registry:
address: spring-cloud://127.0.0.1:8848 # 指定 Dubbo 服务注册中心的地址
# Dubbo 服务提供者协议配置
protocol:
port: -1 # 协议端口。使用 -1 表示随机端口。
name: dubbo # 使用 `dubbo://` 协议。更多协议，可见 http://dubbo.apache.org/zh-cn/docs/user/references/protocol/introduction.html 文档
# 配置扫描 Dubbo 自定义的 @Service 注解，暴露成 Dubbo 服务提供者
scan:
base-packages: cn.iocoder.springcloudalibaba.labx17.accountservice.service
# Spring Cloud Alibaba Dubbo 专属配置项，对应 DubboCloudProperties 类
cloud:
subscribed-services: '' # 设置订阅的应用列表，默认为 * 订阅所有应用。
# Seata 配置项，对应 SeataProperties 类
seata:
application-id: ${spring.application.name} # Seata 应用编号，默认为 ${spring.application.name}
tx-service-group: ${spring.application.name}-group # Seata 事务组编号，用于 TC 集群名
# Seata 服务配置项，对应 ServiceProperties 类
service:
# 虚拟组和分组的映射
vgroup-mapping:
account-service-group: default
# Seata 注册中心配置项，对应 RegistryProperties 类
registry:
type: nacos # 注册中心类型，默认为 file
nacos:
cluster: default # 使用的 Seata 分组
namespace: # Nacos 命名空间
serverAddr: localhost # Nacos 服务地址

19
labx-17/labx-17-sca-seata-at-dubbo-demo/pom.xml Normal file
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@@ -0,0 +1,19 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>labx-17</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17-sca-seata-at-dubbo-demo</artifactId>
<modules>
<module>labx-17-sca-seata-at-dubbo-demo-account-service-api</module>
<module>labx-17-sca-seata-at-dubbo-demo-account-service</module>
</modules>
</project>

19
labx-17/pom.xml Normal file
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@@ -0,0 +1,19 @@
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<artifactId>labs-parent</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-17</artifactId>
<packaging>pom</packaging>
<modules>
<module>labx-17-sca-seata-at-dubbo-demo</module>
</modules>
</project>

1
pom.xml
View File

@@ -81,6 +81,7 @@
<module>labx-16</module>
<module>lab-52</module>
<module>lab-53</module>
<module>labx-17</module>
<!-- Dubbo 示例 -->
</modules>