Seata 是一款开源的分布式事务解决方案,致力于提供高性能和简单易用的分布式事务服务。Seata 将为用户提供了 AT、TCC、SAGA 和 XA 事务模式,为用户打造一站式的分布式解决方案。Seata官网
1.找到适合的Seata版本
参考:SpringCloudAlibaba SpringCloud SpringBoot 版本对照
依赖版本:
spring-boot:2.3.12.RELEASE
spring-cloud-alibaba:2.2.7.RELEASE
spring-cloud:Hoxton.SR12
nacos:2.0.3
seata: 1.3.0
2.下载合适版本的Seata源码下载
Release v1.3.0 · seata/seata · GitHub
wget https://github.com/seata/seata/archive/refs/tags/v1.3.0.zip
wget https://github.com/seata/seata/archive/refs/tags/v1.3.0.tar.gz
3.配置启动Seata
3.1 初始化数据库
3.1.1 创建seata数据库
3.1.2 初始化表
资源链接:https://github.com/seata/seata/blob/1.3.0/script/server/db/mysql.sql
-- -------------------------------- The script used when storeMode is 'db' --------------------------------
-- the table to store GlobalSession data
CREATE TABLE IF NOT EXISTS `global_table`
(`xid` VARCHAR(128) NOT NULL,`transaction_id` BIGINT,`status` TINYINT NOT NULL,`application_id` VARCHAR(32),`transaction_service_group` VARCHAR(32),`transaction_name` VARCHAR(128),`timeout` INT,`begin_time` BIGINT,`application_data` VARCHAR(2000),`gmt_create` DATETIME,`gmt_modified` DATETIME,PRIMARY KEY (`xid`),KEY `idx_gmt_modified_status` (`gmt_modified`, `status`),KEY `idx_transaction_id` (`transaction_id`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8;-- the table to store BranchSession data
CREATE TABLE IF NOT EXISTS `branch_table`
(`branch_id` BIGINT NOT NULL,`xid` VARCHAR(128) NOT NULL,`transaction_id` BIGINT,`resource_group_id` VARCHAR(32),`resource_id` VARCHAR(256),`branch_type` VARCHAR(8),`status` TINYINT,`client_id` VARCHAR(64),`application_data` VARCHAR(2000),`gmt_create` DATETIME(6),`gmt_modified` DATETIME(6),PRIMARY KEY (`branch_id`),KEY `idx_xid` (`xid`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8;-- the table to store lock data
CREATE TABLE IF NOT EXISTS `lock_table`
(`row_key` VARCHAR(128) NOT NULL,`xid` VARCHAR(96),`transaction_id` BIGINT,`branch_id` BIGINT NOT NULL,`resource_id` VARCHAR(256),`table_name` VARCHAR(32),`pk` VARCHAR(36),`gmt_create` DATETIME,`gmt_modified` DATETIME,PRIMARY KEY (`row_key`),KEY `idx_branch_id` (`branch_id`)
) ENGINE = InnoDBDEFAULT CHARSET = utf8;
3.2 完善Nacos相关配置
安装配置启动Nacos参考:Linux Nacos 快速启动_nacos linux快速启动-CSDN博客
3.2.1 新建命名空间 seata
3.2.2 修改config.txt
/seata/script/config-center/config.txt
service.vgroupMapping.my_test_tx_group=SEATA_GROUPstore.mode=dbstore.db.url=jdbc:mysql://xxxx:3306/seata?useUnicode=true
store.db.user=seata
store.db.password=xxxx
3.2.3 将配置信息推送至nacos
源码目录下:/seata-1.3.0/script/config-center/nacos/nacos-config.sh
chmod +x nacos-config.sh./nacos-config.sh -h 127.0.0.1 -p 8848 -g SEATA_GROUP -t 61311143-2318-4af4-9180-ebbc0fxxxxx -u nacos -w nacos
-h: host, 默认值 localhost
-p: port, 默认值 8848
-g: 配置分组 默认值 SEATA_GROUP
-t: 命名空间
-u: 用户名, nacos 1.2.0+ 之后添加权限验证 默认为''
-w: 密码, nacos 1.2.0+ 之后添加权限验证 默认为''
4. 配置启动Seata服务
wget https://github.com/seata/seata/releases/download/v1.3.0/seata-server-1.3.0.tar.gz
wget https://github.com/seata/seata/releases/download/v1.3.0/seata-server-1.3.0.zip
4.1 修改registry.conf
服务目录下:/seata/conf/registry.conf
注意:命名空间需要与上文中生成的保持一致。
registry {# file 、nacos 、eureka、redis、zk、consul、etcd3、sofatype = "nacos"nacos {application = "seata-server"serverAddr = "127.0.0.1:8848"group = "SEATA_GROUP"namespace = "61311143-2318-4af4-9180-ebxxx"username = "nacos"password = "nacos"}
}
config {# file、nacos 、apollo、zk、consul、etcd3、springCloudConfigtype = "nacos"nacos {serverAddr = "127.0.0.1:8848"namespace = "61311143-2318-4af4-9180-ebxxx"group = "SEATA_GROUP"username = "nacos"password = "nacos"}
}
4.2 修改file.conf
服务目录下:/seata/conf/file.conf
## transaction log store, only used in seata-server
store {## store mode: file、db、redismode = "db"db {## the implement of javax.sql.DataSource, such as DruidDataSource(druid)/BasicDataSource(dbcp)/HikariDataSource(hikari) etc.datasource = "druid"## mysql/oracle/postgresql/h2/oceanbase etc.dbType = "mysql"driverClassName = "com.mysql.jdbc.Driver"url = "jdbc:mysql://Xx:3306/seata"user = "seata"password = "Xx"minConn = 5maxConn = 30globalTable = "global_table"branchTable = "branch_table"lockTable = "lock_table"queryLimit = 100maxWait = 5000}
}
4.3 启动服务
sh ./bin/seata-server.sh -h 127.0.0.1 -p 8091 -m db
-h nacos 地址
-p seata服务端口 默认8091
-m 存在事务日志的类型 file 文件 db 数据库 redis...
注意:将合适的数据库链接jar包放到 lib目录,(msyql8+ 使用seata/bin/jdbc/mysql-connector-java-8.0.19.jar)。
5.简单XA模式集成
5.1 业务库中添加表
参照官网:快速启动 | Seata
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) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,`context` varchar(128) CHARACTER SET utf8 COLLATE utf8_general_ci 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) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,PRIMARY KEY (`id`) USING BTREE,UNIQUE INDEX `ux_undo_log`(`xid`, `branch_id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = DYNAMIC;
5.2 添加依赖
此版本需要收到手动重新导入依赖包(1.3.0),否则jar冲突导致启动报错。
<!-- seata --><!-- https://mvnrepository.com/artifact/com.alibaba.cloud/spring-cloud-alibaba-seata --><dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alibaba-seata</artifactId><exclusions><exclusion><groupId>io.seata</groupId><artifactId>seata-spring-boot-starter</artifactId></exclusion></exclusions></dependency><dependency><groupId>io.seata</groupId><artifactId>seata-spring-boot-starter</artifactId><version>1.3.0</version></dependency>
5.3 添加配置
my_test_tx_group使用需要注意。
seata:data-source-proxy-mode: XA # 开启XA事务registry: # TC服务注册中心的配置,微服务根据这些信息去注册中心获取tc服务地址# 参考tc服务自己的registry.conf中的配置type: nacosnacos: # tcserver-addr: nacosipnamespace: "命名空间ID"group: SEATA_GROUPapplication: seata-server # tc服务在nacos中的服务名称cluster: default #集群tx-service-group: my_test_tx_group # 事务组,根据这个获取tc服务的cluster名称service:grouplist:seata-server: 指定seata的IP端口vgroup-mapping: # 事务组与TC服务cluster的映射关系my_test_tx_group: default
5.4 测试表
参照官网:快速启动 | Seata
DROP TABLE IF EXISTS `order_tbl`;
CREATE TABLE `order_tbl` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_id` varchar(255) DEFAULT NULL,
`commodity_code` varchar(255) DEFAULT NULL,
`count` int(11) DEFAULT 0,
`money` int(11) DEFAULT 0,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
DROP TABLE IF EXISTS `account_tbl`;
CREATE TABLE `account_tbl` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_id` varchar(255) DEFAULT NULL,
`money` int(11) DEFAULT 0,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
5.4测试代码
5.4.1订单
@RestController
@RequestMapping("/orderTbl")
public class OrderTblController {@Resourceprivate OrderTblService orderTblService;@PostMapping("/add/{userId}/{money}")public CxResult<Boolean> add(@PathVariable("userId") String userId, @PathVariable("money") Integer money) {return CxResult.success(orderTblService.add(userId, money));}}public interface OrderTblService extends IService<OrderTbl> {Boolean add(String userId, Integer money);}@Service
public class OrderTblServiceImpl extends ServiceImpl<OrderTblMapper, OrderTbl> implements OrderTblService {@DubboReferenceprivate AccountProviderService accountProviderService;@Override@GlobalTransactionalpublic Boolean add(String userId, Integer money) {OrderTbl orderTbl = new OrderTbl();orderTbl.setUserId(userId);orderTbl.setMoney(money);this.save(orderTbl);accountProviderService.addRecord(userId, money);if (money > 10000) {throw new BusinessException(ErrorMsg.COMMON_ERROR_1);}return Boolean.TRUE;}}
5.4.2 账户
public interface AccountProviderService {void addRecord(String userId, Integer money);
}@DubboService
public class AccountProvider implements AccountProviderService {@Resourceprivate AccountTblService accountTblService;@Override@GlobalTransactionalpublic void addRecord(String userId, Integer money) {AccountTbl accountTbl = new AccountTbl();accountTbl.setUserId(userId);accountTbl.setMoney(money);accountTblService.save(accountTbl);}}