Seata客户端

news2025/1/18 4:52:00

一个调用链中的所有微服务都是seata的客户端，都必须走下面的步骤

第一步：创建undo_log表

下载地址：https://github.com/seata/seata/tree/develop/script/client/at/db

-- for AT mode you must to init this sql for you business database. the seata server not need it.

CREATE TABLE IF NOT EXISTS `undo_log`

(

    `branch_id`     BIGINT(20)   NOT NULL COMMENT 'branch transaction id',

    `xid`           VARCHAR(100) NOT NULL COMMENT 'global transaction id',

    `context`       VARCHAR(128) NOT NULL COMMENT 'undo_log context,such as serialization',

    `rollback_info` LONGBLOB     NOT NULL COMMENT 'rollback info',

    `log_status`    INT(11)      NOT NULL COMMENT '0:normal status,1:defense status',

    `log_created`   DATETIME(6)  NOT NULL COMMENT 'create datetime',

    `log_modified`  DATETIME(6)  NOT NULL COMMENT 'modify datetime',

    UNIQUE KEY `ux_undo_log` (`xid`, `branch_id`)

) ENGINE = InnoDB

  AUTO_INCREMENT = 1

  DEFAULT CHARSET = utf8 COMMENT ='AT transaction mode undo table';

第二步：pom依赖

<!-- seata -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-alibaba-seata</artifactId>
    <version>2.2.0.RELEASE</version>
    <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>1.4.2</version>
</dependency>

第三步：配置

seata:
  enabled: true
  tx-service-group: fengmi_tx_group
  enable-auto-data-source-proxy: true
  config:
    type: nacos
    nacos:
      server-addr: 127.0.0.1:8848
      group: DEFAULT_GROUP
      namespace: sit
      username: nacos
      password: nacos
      data-id: fengmi_tx_group-sit.properties

  registry: #发现seata-server
    type: nacos
    nacos:
      application: seata-server
      server-addr: 127.0.0.1:8848
      namespace: sit
      group: DEFAULT_GROUP
      username: nacos
      password: nacos