SpringBoot+ Dubbo + Mybatis + Nacos +Seata整合来实现Dubbo分布式事务

1.简介

“

本文主要介绍SpringBoot2.1.5 + Dubbo 2.7.3 + Mybatis 3.4.2 + Nacos 1.1.3 +Seata 0.8.0整合来实现Dubbo分布式事务管理，使用Nacos 作为 Dubbo和Seata的注册中心和配置中心,使用 MySQL 数据库和 MyBatis来操作数据。

”

如果你还对SpringBoot、Dubbo、Nacos、Seata、Mybatis 不是很了解的话，这里我为大家整理个它们的官网网站，如下

• SpringBoot：https://spring.io/projects/spring-boot

• Dubbo：http://dubbo.apache.org/en-us/

• Nacos：https://nacos.io/zh-cn/docs/quick-start.html

• Seata：https://github.com/seata/seata/wiki/Home_Chinese

• MyBatis：http://www.mybatis.org/mybatis-3/zh/index.html

在这里我们就不一个一个介绍它们是怎么使用和原理，详细请学习官方文档，在这里我将开始对它们进行整合，完成一个简单的案例，来让大家了解Seata来实现Dubbo分布式事务管理的基本流程。

2.环境准备

2.1 下载nacos并安装启动

nacos下载：https://github.com/alibaba/nacos/releases/tag/1.1.3

Nacos 快速入门：https://nacos.io/en-us/docs/quick-start.html

sh startup.sh -m standalone
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在浏览器打开Nacos web 控制台：http://192.168.10.200:8848/nacos/index.html

输入nacos的账号和密码 分别为nacos：nacos

这是时候naocs 就正常启动了。

2.2 下载seata0.8.0 并安装启动

2.2.1 在 Seata Release 下载最新版的 Seata Server 并解压得到如下目录：

.
├──bin
├──conf
├──file_store
└──lib
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2.2.2 修改 conf/registry.conf 配置，

目前seata支持如下的file、nacos 、apollo、zk、consul的注册中心和配置中心。这里我们以nacos 为例。将 type 改为 nacos

registry {# file nacostype = "nacos"nacos {serverAddr = "192.168.10.200:8848"namespace = "public"cluster = "default"}file {name = "file.conf"}
}config {# file、nacos 、apollo、zk、consultype = "nacos"nacos {serverAddr = "192.168.10.200:8848"namespace = "public"cluster = "default"}file {name = "file.conf"}
}1234567891011121314151617181920212223242526272829

• serverAddr = “192.168.10.200:8848” ：nacos 的地址

• namespace = “public” ：nacos的命名空间默认为public

• cluster = “default” ：集群设置未默认 default

注意：seata0.9.0之后，配置如下, 其中namespace = ""

registry {# file nacostype = "nacos"nacos {serverAddr = "192.168.10.200:8848"namespace = ""cluster = "default"}file {name = "file.conf"}
}config {# file、nacos 、apollo、zk、consultype = "nacos"nacos {serverAddr = "192.168.10.200:8848"namespace = ""}file {name = "file.conf"}
}
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2.2.3 修改 conf/nacos-config.txt配置

注意：如果你的seata是1.1之后的版本请按照如下导入方式操作

1. 下载https://github.com/seata/seata/blob/develop/script/config-center/目录下的config.txt文件放入到seata-server目录下的conf中，可更改文件名为nacos-config.txt。

2. 下载https://github.com/seata/seata/tree/develop/script/config-center/nacos/目录下的nacos-config.py文件（window可用python命令执行，linux也可执行，前提先有安装python）或者nacos-config.sh文件（window下可放在git命令行执行，linux可执行文件）

transport.type=TCP
transport.server=NIO
transport.heartbeat=true
transport.thread-factory.boss-thread-prefix=NettyBoss
transport.thread-factory.worker-thread-prefix=NettyServerNIOWorker
transport.thread-factory.server-executor-thread-prefix=NettyServerBizHandler
transport.thread-factory.share-boss-worker=false
transport.thread-factory.client-selector-thread-prefix=NettyClientSelector
transport.thread-factory.client-selector-thread-size=1
transport.thread-factory.client-worker-thread-prefix=NettyClientWorkerThread
transport.thread-factory.boss-thread-size=1
transport.thread-factory.worker-thread-size=8
transport.shutdown.wait=3
service.vgroup_mapping.order-service-seata-service-group=default
service.vgroup_mapping.account-service-seata-service-group=default
service.vgroup_mapping.storage-service-seata-service-group=default
service.vgroup_mapping.business-service-seata-service-group=default
service.enableDegrade=false
service.disable=false
service.max.commit.retry.timeout=-1
service.max.rollback.retry.timeout=-1
client.async.commit.buffer.limit=10000
client.lock.retry.internal=10
client.lock.retry.times=30
store.mode=db
store.file.dir=file_store/data
store.file.max-branch-session-size=16384
store.file.max-global-session-size=512
store.file.file-write-buffer-cache-size=16384
store.file.flush-disk-mode=async
store.file.session.reload.read_size=100
store.db.driver-class-name=com.mysql.jdbc.Driver
store.db.datasource=dbcp
store.db.db-type=mysql
store.db.url=jdbc:mysql://192.168.10.200:3306/seata?useUnicode=true
store.db.user=lidong
store.db.password=cwj887766@@
store.db.min-conn=1
store.db.max-conn=3
store.db.global.table=global_table
store.db.branch.table=branch_table
store.db.query-limit=100
store.db.lock-table=lock_table
recovery.committing-retry-period=1000
recovery.asyn-committing-retry-period=1000
recovery.rollbacking-retry-period=1000
recovery.timeout-retry-period=1000
transaction.undo.data.validation=true
transaction.undo.log.serialization=jackson
transaction.undo.log.save.days=7
transaction.undo.log.delete.period=86400000
transaction.undo.log.table=undo_log
transport.serialization=seata
transport.compressor=none
metrics.enabled=false
metrics.registry-type=compact
metrics.exporter-list=prometheus
metrics.exporter-prometheus-port=9898
service.default.grouplist=127.0.0.1:8091
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这里主要修改了如下几项：

• store.mode :存储模式 默认file 这里我修改为db 模式 ，并且需要三个表global_table、branch_table和lock_table

• store.db.driver-class-name：默认没有，会报错。添加了 com.mysql.jdbc.Driver

• store.db.datasource=dbcp ：数据源 dbcp

• store.db.db-type=mysql : 存储数据库的类型为mysql

• store.db.url=jdbc:mysql://192.168.10.200:3306/seata?useUnicode=true : 修改为自己的数据库url、port、数据库名称

• store.db.user=lidong :数据库的账号

• store.db.password=cwj887766@@ :数据库的密码

• service.vgroup_mapping.order-service-seata-service-group=default

• service.vgroup_mapping.account-service-seata-service-group=default

• service.vgroup_mapping.storage-service-seata-service-group=default

• service.vgroup_mapping.business-service-seata-service-group=default

也可以在 Nacos 配置页面添加，data-id 为 service.vgroup_mapping.${YOUR_SERVICE_NAME}-seata-service-group, group 为 SEATA_GROUP， 如果不添加该配置，启动后会提示no available server to connect to services-server

注意： 配置文件末尾有空行，需要删除，否则会提示失败，尽管实际上是成功的

db模式下的所需的三个表的数据库脚本位于seata\conf\db_store.sql

global_table的表结构

CREATE TABLE `global_table` (`xid` varchar(128) NOT NULL,`transaction_id` bigint(20) DEFAULT NULL,`status` tinyint(4) NOT NULL,`application_id` varchar(64) DEFAULT NULL,`transaction_service_group` varchar(64) DEFAULT NULL,`transaction_name` varchar(64) DEFAULT NULL,`timeout` int(11) DEFAULT NULL,`begin_time` bigint(20) DEFAULT NULL,`application_data` varchar(2000) DEFAULT NULL,`gmt_create` datetime DEFAULT NULL,`gmt_modified` datetime DEFAULT NULL,PRIMARY KEY (`xid`),KEY `idx_gmt_modified_status` (`gmt_modified`,`status`),KEY `idx_transaction_id` (`transaction_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;1234567891011121314151617

branch_table的表结构

CREATE TABLE `branch_table` (`branch_id` bigint(20) NOT NULL,`xid` varchar(128) NOT NULL,`transaction_id` bigint(20) DEFAULT NULL,`resource_group_id` varchar(32) DEFAULT NULL,`resource_id` varchar(256) DEFAULT NULL,`lock_key` varchar(128) DEFAULT NULL,`branch_type` varchar(8) DEFAULT NULL,`status` tinyint(4) DEFAULT NULL,`client_id` varchar(64) DEFAULT NULL,`application_data` varchar(2000) DEFAULT NULL,`gmt_create` datetime DEFAULT NULL,`gmt_modified` datetime DEFAULT NULL,PRIMARY KEY (`branch_id`),KEY `idx_xid` (`xid`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;123456789101112131415161718

lock_table的表结构

create table `lock_table` (`row_key` varchar(128) not null,`xid` varchar(96),`transaction_id` long ,`branch_id` long,`resource_id` varchar(256) ,`table_name` varchar(32) ,`pk` varchar(32) ,`gmt_create` datetime ,`gmt_modified` datetime,primary key(`row_key`)
);
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2.2.4 将 Seata 配置添加到 Nacos 中

使用命令如下

cd conf
sh nacos-config.sh localhost
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成功后会提示

init nacos config finished, please start seata-server
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在 Nacos 管理页面应该可以看到有 59 个 Group 为SEATA_GROUP的配置

2.2.5 启动 Seata Server

使用db 模式启动

 cd ..sh ./bin/seata-server.sh
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这时候在 Nacos 的服务列表下面可以看到一个名为serverAddr的服务

3 案例分析

参考官网中用户购买商品的业务逻辑。整个业务逻辑由4个微服务提供支持：

• 库存服务：扣除给定商品的存储数量。

• 订单服务：根据购买请求创建订单。

• 帐户服务：借记用户帐户的余额。

• 业务服务：处理业务逻辑。

请求逻辑架构

3.1 github地址

springboot-dubbo-seata：https://github.com/lidong1665/springboot-dubbo-seata

• samples-common ：公共模块

• samples-account ：用户账号模块

• samples-order ：订单模块

• samples-storage ：库存模块

• samples-business ：业务模块

3.2 账户服务：AccountDubboService

/*** @Author: lidong* @Description  账户服务接口* @Date Created in 2019/9/5 16:37*/
public interface AccountDubboService {/*** 从账户扣钱*/ObjectResponse decreaseAccount(AccountDTO accountDTO);
}
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3.3 订单服务：OrderDubboService

/*** @Author: lidong* @Description  订单服务接口* @Date Created in 2019/9/5 16:28*/
public interface OrderDubboService {/*** 创建订单*/ObjectResponse<OrderDTO> createOrder(OrderDTO orderDTO);
}
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3.4 库存服务：StorageDubboService

/*** @Author: lidong* @Description  库存服务* @Date Created in 2019/9/5 16:22*/
public interface StorageDubboService {/*** 扣减库存*/ObjectResponse decreaseStorage(CommodityDTO commodityDTO);
}12345678910111213

3.5 业务服务：BusinessService

/*** @Author: lidong* @Description* @Date Created in 2019/9/5 17:17*/
public interface BusinessService {/*** 出处理业务服务* @param businessDTO* @return*/ObjectResponse handleBusiness(BusinessDTO businessDTO);
}
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业务逻辑的具体实现主要体现在 订单服务的实现和业务服务的实现

订单服务的实现

@Service
public class TOrderServiceImpl extends ServiceImpl<TOrderMapper, TOrder> implements ITOrderService {@Reference(version = "1.0.0")private AccountDubboService accountDubboService;/*** 创建订单* @Param:  OrderDTO  订单对象* @Return:  OrderDTO  订单对象*/@Overridepublic ObjectResponse<OrderDTO> createOrder(OrderDTO orderDTO) {ObjectResponse<OrderDTO> response = new ObjectResponse<>();//扣减用户账户AccountDTO accountDTO = new AccountDTO();accountDTO.setUserId(orderDTO.getUserId());accountDTO.setAmount(orderDTO.getOrderAmount());ObjectResponse objectResponse = accountDubboService.decreaseAccount(accountDTO);//生成订单号orderDTO.setOrderNo(UUID.randomUUID().toString().replace("-",""));//生成订单TOrder tOrder = new TOrder();BeanUtils.copyProperties(orderDTO,tOrder);tOrder.setCount(orderDTO.getOrderCount());tOrder.setAmount(orderDTO.getOrderAmount().doubleValue());try {baseMapper.createOrder(tOrder);} catch (Exception e) {response.setStatus(RspStatusEnum.FAIL.getCode());response.setMessage(RspStatusEnum.FAIL.getMessage());return response;}if (objectResponse.getStatus() != 200) {response.setStatus(RspStatusEnum.FAIL.getCode());response.setMessage(RspStatusEnum.FAIL.getMessage());return response;}response.setStatus(RspStatusEnum.SUCCESS.getCode());response.setMessage(RspStatusEnum.SUCCESS.getMessage());return response;}
}
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整个业务的实现逻辑

@Service
@Slf4j
public class BusinessServiceImpl implements BusinessService{@Reference(version = "1.0.0")private StorageDubboService storageDubboService;@Reference(version = "1.0.0")private OrderDubboService orderDubboService;private boolean flag;/*** 处理业务逻辑* @Param:* @Return:*/@GlobalTransactional(timeoutMills = 300000, name = "dubbo-gts-seata-example")@Overridepublic ObjectResponse handleBusiness(BusinessDTO businessDTO) {log.info("开始全局事务，XID = " + RootContext.getXID());ObjectResponse<Object> objectResponse = new ObjectResponse<>();//1、扣减库存CommodityDTO commodityDTO = new CommodityDTO();commodityDTO.setCommodityCode(businessDTO.getCommodityCode());commodityDTO.setCount(businessDTO.getCount());ObjectResponse storageResponse = storageDubboService.decreaseStorage(commodityDTO);//2、创建订单OrderDTO orderDTO = new OrderDTO();orderDTO.setUserId(businessDTO.getUserId());orderDTO.setCommodityCode(businessDTO.getCommodityCode());orderDTO.setOrderCount(businessDTO.getCount());orderDTO.setOrderAmount(businessDTO.getAmount());ObjectResponse<OrderDTO> response = orderDubboService.createOrder(orderDTO);//打开注释测试事务发生异常后，全局回滚功能
//        if (!flag) {
//            throw new RuntimeException("测试抛异常后，分布式事务回滚！");
//        }if (storageResponse.getStatus() != 200 || response.getStatus() != 200) {throw new DefaultException(RspStatusEnum.FAIL);}objectResponse.setStatus(RspStatusEnum.SUCCESS.getCode());objectResponse.setMessage(RspStatusEnum.SUCCESS.getMessage());objectResponse.setData(response.getData());return objectResponse;}
}
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3.6 使用seata的分布式事务解决方案处理dubbo的分布式事务

我们只需要在业务处理的方法handleBusiness添加一个注解 @GlobalTransactional

@GlobalTransactional(timeoutMills = 300000, name = "dubbo-gts-seata-example")@Overridepublic ObjectResponse handleBusiness(BusinessDTO businessDTO) {}
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• timeoutMills: 超时时间

• name ：事务名称

3.7 准备数据库

注意: MySQL必须使用InnoDB engine.

创建数据库 并导入数据库脚本

DROP DATABASE IF EXISTS seata;
CREATE DATABASE seata;
USE seata;DROP TABLE IF EXISTS `t_account`;
CREATE TABLE `t_account` (`id` int(11) NOT NULL AUTO_INCREMENT,`user_id` varchar(255) DEFAULT NULL,`amount` double(14,2) DEFAULT '0.00',PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;-- ----------------------------
-- Records of t_account
-- ----------------------------
INSERT INTO `t_account` VALUES ('1', '1', '4000.00');-- ----------------------------
-- Table structure for t_order
-- ----------------------------
DROP TABLE IF EXISTS `t_order`;
CREATE TABLE `t_order` (`id` int(11) NOT NULL AUTO_INCREMENT,`order_no` varchar(255) DEFAULT NULL,`user_id` varchar(255) DEFAULT NULL,`commodity_code` varchar(255) DEFAULT NULL,`count` int(11) DEFAULT '0',`amount` double(14,2) DEFAULT '0.00',PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=64 DEFAULT CHARSET=utf8;-- ----------------------------
-- Records of t_order
-- ------------------------------ ----------------------------
-- Table structure for t_storage
-- ----------------------------
DROP TABLE IF EXISTS `t_storage`;
CREATE TABLE `t_storage` (`id` int(11) NOT NULL AUTO_INCREMENT,`commodity_code` varchar(255) DEFAULT NULL,`name` varchar(255) DEFAULT NULL,`count` int(11) DEFAULT '0',PRIMARY KEY (`id`),UNIQUE KEY `commodity_code` (`commodity_code`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;-- ----------------------------
-- Records of t_storage
-- ----------------------------
INSERT INTO `t_storage` VALUES ('1', 'C201901140001', '水杯', '1000');-- ----------------------------
-- Table structure for undo_log
-- 注意此处0.3.0+ 增加唯一索引 ux_undo_log
-- ----------------------------
DROP TABLE IF EXISTS `undo_log`;
CREATE TABLE `undo_log` (`id` bigint(20) NOT NULL AUTO_INCREMENT,`branch_id` bigint(20) NOT NULL,`xid` varchar(100) NOT NULL,`context` varchar(128) NOT NULL,`rollback_info` longblob NOT NULL,`log_status` int(11) NOT NULL,`log_created` datetime NOT NULL,`log_modified` datetime NOT NULL,`ext` varchar(100) DEFAULT NULL,PRIMARY KEY (`id`),UNIQUE KEY `ux_undo_log` (`xid`,`branch_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;-- ----------------------------
-- Records of undo_log
-- ----------------------------
SET FOREIGN_KEY_CHECKS=1;
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会看到如上的4个表

+-------------------------+
| Tables_in_seata         |
+-------------------------+
| t_account               |
| t_order                 |
| t_storage               |
| undo_log                |
+-------------------------+
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这里为了简化我将这个三张表创建到一个库中,使用是三个数据源来实现。

3.8 我们以账号服务samples-account为例 ，分析需要注意的配置项目

3.8.1 引入的依赖

<?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"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.1.5.RELEASE</version><relativePath/> <!-- lookup parent from repository --></parent><artifactId>springboot-dubbo-seata</artifactId><packaging>pom</packaging><name>springboot-dubbo-seata</name><groupId>io.seata</groupId><version>1.0.0</version><description>samples-account</description》<properties><springboot.verison>2.1.5.RELEASE</springboot.verison><java.version>1.8</java.version><druid.version>1.1.10</druid.version><mybatis.version>1.3.2</mybatis.version><mybatis-plus.version>2.3</mybatis-plus.version><nacos.version>0.2.3</nacos.version><lombok.version>1.16.22</lombok.version><dubbo.version>2.7.3</dubbo.version><nacos-client.verison>1.1.3</nacos-client.verison><seata.version>0.8.0</seata.version><netty.version>4.1.32.Final</netty.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>${springboot.verison}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId><version>${springboot.verison}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><version>${springboot.verison}</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>${druid.version}</version></dependency><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>${mybatis.version}</version></dependency><dependency><groupId>com.baomidou</groupId><artifactId>mybatis-plus</artifactId><version>${mybatis-plus.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo</artifactId><version>${dubbo.version}</version><exclusions><exclusion><artifactId>spring</artifactId><groupId>org.springframework</groupId></exclusion></exclusions></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>${dubbo.version}</version></dependency><!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-config-spring --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-config-spring</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId><version>${dubbo.version}</version></dependency><!-- https://mvnrepository.com/artifact/io.seata/seata-all --><dependency><groupId>io.seata</groupId><artifactId>seata-all</artifactId><version>${seata.version}</version></dependency><dependency><groupId>com.alibaba.nacos</groupId><artifactId>nacos-client</artifactId><version>${nacos-client.verison}</version></dependency><!-- https://mvnrepository.com/artifact/com.alibaba.boot/nacos-config-spring-boot-starter --><dependency><groupId>com.alibaba.boot</groupId><artifactId>nacos-config-spring-boot-starter</artifactId><version>${nacos.version}</version><exclusions><exclusion><artifactId>nacos-client</artifactId><groupId>com.alibaba.nacos</groupId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${springboot.verison}</version></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><version>${lombok.version}</version></dependency><dependency><groupId>io.netty</groupId><artifactId>netty-all</artifactId><version>${netty.version}</version></dependency><dependency><groupId>com.alibaba.spring</groupId><artifactId>spring-context-support</artifactId><version>1.0.2</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-deploy-plugin</artifactId><configuration><skip>true</skip></configuration></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>${java.version}</source><target>${java.version}</target></configuration></plugin></plugins></build>
</project>123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184

注意：

• seata-all: 这个是seata 所需的主要依赖

• dubbo-spring-boot-starter: springboot dubbo的依赖

其他的就不一一介绍，其他的一目了然，就知道是干什么的。

3.8.2 application.properties配置

server.port=8102
spring.application.name=dubbo-account-example#====================================Dubbo配置===============================================
dubbo.application.id= dubbo-account-example
dubbo.application.name= dubbo-account-example
dubbo.protocol.id=dubbo
dubbo.protocol.name=dubbo
dubbo.registry.id=dubbo-account-example-registry
dubbo.registry.address=nacos://192.168.10.200:8848
dubbo.protocol.port=20880
dubbo.application.qosEnable=false
dubbo.config-center.address=nacos://192.168.10.200:8848
dubbo.metadata-report.address=nacos://192.168.10.200:8848#====================================mysql 配置============================================
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://192.168.10.200:3306/seata?useSSL=false&useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true
spring.datasource.username=lidong
spring.datasource.password=cwj887766@@#=====================================mybatis 配置======================================
mybatis.mapper-locations=classpath*:/mapper/*.xml12345678910111213141516171819202122232425

3.8.3 registry.conf 配置 （naocs的配置）

registry {# file nacostype = "nacos"nacos {serverAddr = "192.168.10.200"namespace = "public"cluster = "default"}file {name = "file.conf"}
}config {# file、nacos 、apollo、zk、consultype = "nacos"file {name = "file.conf"}nacos {serverAddr = "192.168.10.200"namespace = "public"cluster = "default"}
}1234567891011121314151617181920212223242526272829

3.8.5 SeataAutoConfig 配置

package io.seata.samples.integration.account.config;import com.alibaba.druid.pool.DruidDataSource;import io.seata.rm.datasource.DataSourceProxy;
import io.seata.spring.annotation.GlobalTransactionScanner;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;/*** @Author: llidong* @Description  seata global configuration* @Date Created in 2019/9/05 10:28*/
@Configuration
public class SeataAutoConfig {/*** autowired datasource config*/@Autowiredprivate DataSourceProperties dataSourceProperties;/*** init durid datasource** @Return: druidDataSource  datasource instance*/@Bean@Primarypublic DruidDataSource druidDataSource(){DruidDataSource druidDataSource = new DruidDataSource();druidDataSource.setUrl(dataSourceProperties.getUrl());druidDataSource.setUsername(dataSourceProperties.getUsername());druidDataSource.setPassword(dataSourceProperties.getPassword());druidDataSource.setDriverClassName(dataSourceProperties.getDriverClassName());druidDataSource.setInitialSize(0);druidDataSource.setMaxActive(180);druidDataSource.setMaxWait(60000);druidDataSource.setMinIdle(0);druidDataSource.setValidationQuery("Select 1 from DUAL");druidDataSource.setTestOnBorrow(false);druidDataSource.setTestOnReturn(false);druidDataSource.setTestWhileIdle(true);druidDataSource.setTimeBetweenEvictionRunsMillis(60000);druidDataSource.setMinEvictableIdleTimeMillis(25200000);druidDataSource.setRemoveAbandoned(true);druidDataSource.setRemoveAbandonedTimeout(1800);druidDataSource.setLogAbandoned(true);return druidDataSource;}/*** init datasource proxy* @Param: druidDataSource  datasource bean instance* @Return: DataSourceProxy  datasource proxy*/@Beanpublic DataSourceProxy dataSourceProxy(DruidDataSource druidDataSource){return new DataSourceProxy(druidDataSource);}/*** init mybatis sqlSessionFactory* @Param: dataSourceProxy  datasource proxy* @Return: DataSourceProxy  datasource proxy*/@Beanpublic SqlSessionFactory sqlSessionFactory(DataSourceProxy dataSourceProxy) throws Exception {SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();factoryBean.setDataSource(dataSourceProxy);factoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:/mapper/*.xml"));return factoryBean.getObject();}/*** init global transaction scanner** @Return: GlobalTransactionScanner*/@Beanpublic GlobalTransactionScanner globalTransactionScanner(){return new GlobalTransactionScanner("account-gts-seata-example", "account-service-seata-service-group");}
}12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394

其中:

@Beanpublic GlobalTransactionScanner globalTransactionScanner(){return new GlobalTransactionScanner("account-gts-seata-example", "account-service-seata-service-group");}
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GlobalTransactionScanner: 初始化全局的事务扫描器

 /*** Instantiates a new Global transaction scanner.** @param applicationId  the application id* @param txServiceGroup the default server group*/public GlobalTransactionScanner(String applicationId, String txServiceGroup) {this(applicationId, txServiceGroup, DEFAULT_MODE);}
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• applicationId ：为应用id 这里我传入的是account-gts-seata-example

• txServiceGroup: 默认server的分组 这里我传入的是account-service-seata-service-group 这个和我们前面在nacos 配置的是保存一致。

• DEFAULT_MODE：默认的事务模式 为AT_MODE + MT_MODE

3.8.6 AccountExampleApplication 启动类的配置

package io.seata.samples.integration.account;import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.config.ConfigFileApplicationListener;@SpringBootApplication(scanBasePackages = "io.seata.samples.integration.account")
@MapperScan({"io.seata.samples.integration.account.mapper"})
@EnableDubbo(scanBasePackages = "io.seata.samples.integration.account")
public class AccountExampleApplication {public static void main(String[] args) {SpringApplication.run(AccountExampleApplication.class, args);}}1234567891011121314151617181920

• @EnableDubbo等同于 @DubboComponentScan和 @EnableDubboConfig组合

• @DubboComponentScan 扫描 classpaths 下类中添加了 @Service 和 @Reference 将自动注入到spring beans中。

• @EnableDubboConfig 扫描的dubbo的外部化配置。

4 启动所有的sample模块

启动 samples-account、samples-order、samples-storage、samples-business

并且在nocos的控制台查看注册情况: http://192.168.10.200:8848/nacos/#/serviceManagement

我们可以看到上面的服务都已经注册成功。

5 测试

5. 1 发送一个下单请求

使用postman 发送 ：http://localhost:8104/business/dubbo/buy

参数：

{"userId":"1","commodityCode":"C201901140001","name":"fan","count":50,"amount":"100"
}
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返回

{"status": 200,"message": "成功","data": null
}
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这时候控制台：

2019-09-05 12:17:34.097  INFO 21860 --- [nio-8104-exec-4] i.s.s.i.c.controller.BusinessController  : 请求参数：BusinessDTO(userId=1, commodityCode=C201901140001, name=fan, count=50, amount=100)
2019-09-05 12:17:34.146  INFO 21860 --- [nio-8104-exec-4] i.seata.tm.api.DefaultGlobalTransaction  : Begin new global transaction [192.168.10.200:8091:2021380638]
2019-09-05 12:17:34.150  INFO 21860 --- [nio-8104-exec-4] i.s.s.i.c.service.BusinessServiceImpl    : 开始全局事务，XID = 192.168.10.200:8091:2021380638
2019-09-05 12:17:36.966  INFO 21860 --- [nio-8104-exec-4] i.seata.tm.api.DefaultGlobalTransaction  : [192.168.10.200:8091:2021380638] commit status:Committed
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事务提交成功，

我们来看一下数据库数据变化

t_account

t_order

t_storage

数据没有问题。

5.2 测试回滚

我们samples-business将BusinessServiceImpl的handleBusiness2 下面的代码去掉注释

if (!flag) {throw new RuntimeException("测试抛异常后，分布式事务回滚！");
}
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使用postman 发送 ：http://localhost:8104/business/dubbo/buy2

.响应结果：

{"timestamp": "2019-09-05T04:29:34.178+0000","status": 500,"error": "Internal Server Error","message": "测试抛异常后，分布式事务回滚！","path": "/business/dubbo/buy"
}
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控制台

2019-09-05 12:29:32.836  INFO 17264 --- [nio-8104-exec-2] i.s.s.i.c.controller.BusinessController  : 请求参数：BusinessDTO(userId=1, commodityCode=C201901140001, name=fan, count=50, amount=100)
2019-09-05 12:29:32.843  INFO 17264 --- [nio-8104-exec-2] i.s.common.loader.EnhancedServiceLoader  : load ContextCore[null] extension by class[io.seata.core.context.ThreadLocalContextCore]
2019-09-05 12:29:32.848  INFO 17264 --- [nio-8104-exec-2] i.s.common.loader.EnhancedServiceLoader  : load TransactionManager[null] extension by class[io.seata.tm.DefaultTransactionManager]
2019-09-05 12:29:32.849  INFO 17264 --- [nio-8104-exec-2] io.seata.tm.TransactionManagerHolder     : TransactionManager Singleton io.seata.tm.DefaultTransactionManager@461585ac
2019-09-05 12:29:32.859  INFO 17264 --- [nio-8104-exec-2] i.s.common.loader.EnhancedServiceLoader  : load LoadBalance[null] extension by class[io.seata.discovery.loadbalance.RandomLoadBalance]
2019-09-05 12:29:32.893  INFO 17264 --- [nio-8104-exec-2] i.seata.tm.api.DefaultGlobalTransaction  : Begin new global transaction [192.168.10.200:8091:2021380674]
2019-09-05 12:29:32.897  INFO 17264 --- [nio-8104-exec-2] i.s.s.i.c.service.BusinessServiceImpl    : 开始全局事务，XID = 192.168.10.200:8091:2021380674
2019-09-05 12:29:34.143  INFO 17264 --- [nio-8104-exec-2] i.seata.tm.api.DefaultGlobalTransaction  : [192.168.10.200:8091:2021380674] rollback status:Rollbacked
2019-09-05 12:29:34.158 ERROR 17264 --- [nio-8104-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: 测试抛异常后，分布式事务回滚！] with root causejava.lang.RuntimeException: 测试抛异常后，分布式事务回滚！at io.seata.samples.integration.call.service.BusinessServiceImpl.handleBusiness(BusinessServiceImpl.java:60) ~[classes/:na]at io.seata.samples.integration.call.service.BusinessServiceImpl$$FastClassBySpringCGLIB$$2ab3d645.invoke(<generated>) ~[classes/:na]at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749) ~[spring-aop-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.1.7.RELEASE.jar:5.1.7.RELEASE]at io.seata.spring.annotation.GlobalTransactionalInterceptor$1.execute(GlobalTransactionalInterceptor.java:104) ~[seata-all-0.8.0.jar:0.8.0]at io.seata.tm.api.TransactionalTemplate.execute(TransactionalTemplate.java:64) ~[seata-all-0.8.0.jar:0.8.0]at io.seata.spring.annotation.GlobalTransactionalInterceptor.handleGlobalTransaction(GlobalTransactionalInterceptor.java:101) ~[seata-all-0.8.0.jar:0.8.0]at io.seata.spring.annotation.GlobalTransactionalInterceptor.invoke(GlobalTransactionalInterceptor.java:76) ~[seata-all-0.8.0.jar:0.8.0]at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688) ~[spring-aop-5.1.7.RELEASE.jar:5.1.7.RELEASE]at io.seata.samples.integration.call.service.BusinessServiceImpl$$EnhancerBySpringCGLIB$$cb43f7ab.handleBusiness(<generated>) ~[classes/:na]at io.seata.samples.integration.call.controller.BusinessController.handleBusiness(BusinessController.java:37) ~[classes/:na]at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_144]at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_144]at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_144]at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_144]at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1039) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) ~[spring-webmvc-5.1.7.RELEASE.jar:5.1.7.RELEASE]at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-5.1.7.RELEASE.jar:5.1.7.RELEASE]at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) ~[tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:836) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1747) [tomcat-embed-core-9.0.19.jar:9.0.19]at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.19.jar:9.0.19]at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_144]at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_144]at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.19.jar:9.0.19]at java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980

我们查看数据库数据，已经回滚，和上面的数据一致。