seata-springboot整合笔记

1. 添加依赖

   <dependency>
       <groupId>io.seatagroupId>
       <artifactId>seata-spring-boot-starterartifactId>
   dependency>
   

2. 建表

   CREATE TABLE undo_log(
       id               BIGINT(20)        NOT NULL       AUTO_INCREMENT   PRIMARY KEY,
       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,
       UNIQUE KEY ux_undo_log(xid,branch_id)
   )  ENGINE = INNODB DEFAULT CHARSET = utf8;
   

3. 修改application.properties配置,从源码包中复制即可

   seata源码中/seata-1.3.0/script/client/spring/application.properties中有效内容复制粘贴

4. 配置主要关注项

   seata.enabled=true
   seata.application-id=${
          spring.application.name}
   # 与服务端配置的保持一致即可，服务端为每个微服务添加对应的配置
   # 对应服务端配置: service.vgroupMapping.sample_account_service_tx_group=default
   seata.tx-service-group=sample_account_service_tx_group
   # 这里配置微服务对应的undo表名称
   seata.client.undo.log-table=undo_log
   # 注意这里与上面的seata.tx-service-group配置一定要对应上
   seata.service.vgroup-mapping.sample_account_service_tx_group=default
   seata.service.grouplist.default=192.168.221.128:8091
   # config与registry与服务端保持一致即可
   seata.config.type=nacos
   seata.config.nacos.namespace=
   seata.config.nacos.serverAddr=192.168.221.128:8848
   seata.config.nacos.group=SEATA_GROUP
   seata.registry.type=nacos
   seata.registry.nacos.application=seata-server
   seata.registry.nacos.server-addr=192.168.221.128:8848
   seata.registry.nacos.group=SEATA_GROUP
   seata.registry.nacos.namespace=
   

5. 在服务调用的最外层添加@GlobalTransactional注解

   public class RestOrderServiceImpl implements IRestOrderService {
          
       @Reference(version = "1.0.1", group = "yicj")
       private IRepoService repoService;
       @Reference(version = "1.0.1", group = "yicj")
       private IOrderService orderService;
   
       @GlobalTransactional(timeoutMills = 30000, name = "sample-rest-web")
       @Override
       public ObjectResponse handleBusiness(OrderRequest orderRequest) throws Exception {
          
           log.info("开始全局事务: xid = {}", RootContext.getXID());
           log.info("begin order: "+orderRequest);
       }
   }
   

6. 在每微服务应用中可获取事务xid

   String xid = RootContext.getXID() ;
   log.info("开始全局事务: xid = {}", xid);